| Seismic Analysis of Intake Towers Considering Multiple-Support Excitation and Soil-Structure Interaction Effects |
SEP 2004 |
103 pages |
| Authors:
Aidcer L. Vidot; Luis E. Suarez; Enrique E. Matheu; Michael K. Sharp; PUERTO RICO UNIV MAYAGUEZ DEPT OF CIVIL ENGINEERING
|
 | This report investigates the seismic response of intake-outlet towers. The effect of different ground accelerations at the supports of the tower and inspection bridge is examined. The water outside and inside the tower is accounted for by added masses. The accelerations at the bridge support and tower base are obtained from a finite element model of the dam and soil foundation. The other effect examined is the soil-structure interaction. First, ... |
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| Toward Generalized Continuum Models of Granular Soil and Soil-Tire Interaction |
31 JAN 2004 |
14 pages |
| Authors:
Antoinette Tordesillas; MELBOURNE UNIV VICTORIA (AUSTRALIA) DEPT OF MATHEMATICS AND STATISTICS
|
| This report summarizes accomplishments from Phase 3, the objectives of which were as follows: (1) the refinement and evaluation of the constitutive models, and (2) the implementation of these models using the finite element method to the classical flat punch problem. The authors' micromechanical approach has delivered the first breed of enriched continuum models for granular media, with a resolution high enough to capture internal microstructures that are only a ... |
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| Numerical Methods to Model Excavation of Soil Adjacent to Retaining Structures |
NOV 2002 |
106 pages |
| Authors:
Marte S. Gutierrez; Robert M. Ebeling; George M. Filz; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS INFORMATION TECHNOLOGY LAB
|
| The U.S. Army Corps of Engineers uses SOILSTRUCT-ALPHA to perform soil-structure interaction (SSI) analyses of multi- anchored or tieback retaining walls. A critical aspect for SSI analyses of such structures is the modeling of the excavation process. The excavation algorithm in SOILSTRUCT was developed in the late l960s by Clough and Duncan (1969), and it has not been updated since that time, even though improved methods have become available. In ... |
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| State of the Practice in the Design of Tall, Stiff, and Flexible Tieback Retaining Walls |
DEC 2001 |
253 pages |
| Authors:
Ralph W. Strom; Robert M. Ebeling; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS INFORMATION TECHNOLOGY LAB
|
| In tieback wall design, the determination of anchor loads and wall forces requires knowledge about the interaction between the wall and the soil during successive stages of excavation, as well as after completion of the project. Interaction between the wall and soil is difficult to predict. As a result, simple methods of analysis have been developed for use in the design of various tieback wall systems. These methods may, or ... |
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| Modeling and Analysis of a 3-D Asymmetric Mine-Soil-Hull Floor Interaction Problems with Mine Buried in Dry and Wet Sand |
SEP 2001 |
24 pages |
| Authors:
Aaron D. Gupta; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| An above-ground 2.44 m x 2.44 m x 20 cm rolled homogeneous armor (RHA) plate with a total mass of 9000 kg located asymmetrically at a fixed horizontal 61 cm offset and a vertical 46 cm stand-off above a shallow-buried mine with an equivalent charge weight of 9.05 kg TNT and 15 cm depth of overburden in dry and wet sand has been modeled in 3-D using the CTH hydrodynamic ... |
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| Extended Load/Unload/Reload Hyperbolic Model for Interfaces: Parameter Values and Model Performance for the Contact Between Concrete and Coarse Sand |
DEC 2000 |
98 pages |
| Authors:
Jesus E. Gomez; George M. Filz; Robert M. Ebeling; CORPS OF ENGINEERS VICKSBURG MS
|
| The extended hyperbolic model for interfaces developed by Gomez, Filz, and Ebeling (Technical Report ITL-99-1; Report 2) can model the response of interfaces subjected to complex stress paths that may include simultaneous changes in shear and normal stresses and unloading-reloading. These types of loading can occur at soil-structure interfaces of multi-anchored systems used in navigation projects. Therefore, it is possible that finite element analyses of multi-anchored systems can be performed ... |
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| Constitutive Modeling of Particular Media-Structure Interfaces |
14 AUG 2000 |
88 pages |
| Authors:
P. J. Boscher; T. B. Edil; M. E. Plesha; WISCONSIN UNIV-MADISON DEPT OF CIVIL AND ENVIRONMENTAL ENGINEERING
|
| The interaction of soil and structure is a problem that has challenged designers for centuries. Empirical relationships have been used to estimate the shear resistance between various materials and soil however this approach is limited to generic soils and interface materials, in addition these empirical relationships do not predict the deformation behavior at these interfaces. Proper characterization of interface behavior depends on the formulation ... |
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| Dynamic Loading of Shallow Foundations: Theory Versus Experiment |
28 JUN 2000 |
245 pages |
| Authors:
Joel A. Sloan; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH
|
| In soil-structure interaction problems in soil dynamics, an important subject is the dynamic behavior of embedded foundations. Presented in this thesis is a basic study of the vertical and lateral vibration characteristics of shallow foundations. To obtain a physical understanding of the problem for granular soils, a series of forced vibration tests of square foundations embedded to various depths in sand is performed in a geotechnical centrifuge. ... |
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| Development of an Improved Numerical Model for Concrete-to-Soil Interfaces in Soil-Structure Interaction Analyses. Report 1 Preliminary Study |
JAN 1999 |
154 pages |
| Authors:
Jesus E. Gomez; George M. Filz; Robert M. Ebeling; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS INFORMATION TECHNOLOGY LAB
|
| Soil-Structure Interaction (SSI) analyses have proven to be powerful tools for use in analyzing, designing, and monitoring geotechnical structures. SSI analyses are particularly useful in problems of complex geometry and loading conditions such as lock walls. Several SSI analyses of Corps of Engineers lock walls have shown that the behavior of the soil-structure interface has a significant influence on the magnitudes of the loads acting against a lock wall. They ... |
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| Numerical Modeling of Steady-State Plow/Soil Interaction |
AUG 97 |
177 pages |
| Authors:
Theodore A. Shugar; NAVAL FACILITIES ENGINEERING SERVICE CENTER PORT HUENEME CA
|
| A numerical model of steady-state plow/soil interaction in support of cable burial operations on the seafloor was developed. Coupled field equations for equilibrium of an elasto-plastic medium and pore water diffusion in the presence of rigid surfaces contacting and sliding through fully saturated soil were solved in two dimensions. Time histories of unit plow forces contained distinct transient and steady-state phases reminiscent of total plow force histories recorded in the ... |
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| Repair, Evaluation, Maintenance and Rehabilitation Research Program: Evaluating the Stability of Existing Massive Concrete Gravity Structures Founded on Rock |
JUL 97 |
267 pages |
| Authors:
Robert M. Ebeling; Michael E. Pace; Ernest E. Morrison; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
|
| The U.S. Army Corps of Engineers is responsible for designing and maintaining a large number of navigation and flood control structures. Many of the older massive concrete gravity hydraulic structures are being examined to determine if rehabilitation is required to meet stability criteria. The procedures currently used for evaluating the safety of existing massive hydraulic structures are the conventional equilibrium methods, which are the same general methods used in the ... |
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| Ice Force and Scour Instrumentation for the White River, Vermont |
APR 96 |
59 pages |
| Authors:
Leonard J. Zabilansky; COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
|
| In January 1990 a bridge over the White River in White River Junction, Vermont, collapsed during a period of ice breakup. Based on the historic weather and stage data, the bridge had survived more dramatic breakups in previous winters. The ultimate failure was attributed to the progressive deterioration of the foundation due to scour. Twenty years of weather and stage data at the site are presented along with a failure ... |
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| A Fundamental Study of the Field Compressometer Test |
08 DEC 95 |
119 pages |
| Authors:
S. Banerjee; R. D. Holtz; UNIV OF WASHINGTON SEATTLE DEPT OF CIVIL ENGINEERING
|
| The project consisted of both theoretical and experimental research components. The theoretical research involved the development of a simple elasto-plastic constitative model based on incremental plasticity and double- hardening concepts to model the behavior of geomaterials. The model has been tested under general loading conditions and has reproduced experimental results reasonably well. I has also been implemented in a finite element program to facilitate the analysis of practical soil-structure interaction ... |
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| Beaver Dam Secant Pile Wall Completion Report |
OCT 95 |
401 pages |
| Authors:
Patrick W. Jordan; Larry Pitchford; RODIO-NICHOLSON JOINT VENTURE BOSTON MA
|
| The report presents a comprehensive project history, beginning in 1966 with the initial Beaver Lake (Located near Eureka Springs, in northwest Arkansas, U.S.A.) impoundment against Dike 1, which produced observable surface seepage from five areas downstream of Dike 1. Seepage continued to increase due to limestone rock weathering and solutioning, combined with removal of colloidal sized soil material from the overburden and weathered rock zones, particularly along two faults that ... |
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| Beaver Dam Secant Pile Wall Completion Report. Volume 1 |
OCT 95 |
201 pages |
| Authors:
Patrick W. Jordan; Larry Pitchford; RODIO-NICHOLSON JOINT VENTURE BOSTON MA
|
| The report presents a comprehensive project history, beginning in 1966 with the initial Beaver Lake (Located near Eureka Springs, in northwest Arkansas, U.S.A.) impoundment against Dike 1, which produced observable surface seepage from five areas downstream of Dike 1. Seepage continued to increase due to limestone rock weathering and solutioning, combined with removal of colloidal sized soil material from the overburden and weathered rock zones, particularly along two faults that ... |
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| Toe Scour and Bank Protection Using Launchable Stone |
SEP 95 |
84 pages |
| Authors:
Stephen T. Maynord; Douglas M. White; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS HYDRAULICS LAB
|
| An empirical method for scour depth estimation is developed based on radius/width and aspect ratio. The thickness of the before-launch section controls the rate at which rock is released and should be 2.5 to 4.0 times the thickness of the bank protection revetment Tau for gradual scour and 2.5 to 3.0 Tau for rapid scour found in impinged flow environments. Riprap size for gradual scour is the same for both ... |
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| Proceedings of the Workshop on Effects of Piles on Soil Properties Held in Vicksburg, Mississippi on 13-15 July 1993 |
AUG 95 |
333 pages |
| Authors:
John M. Anderson; William M. Myers; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS GEOTECHNICAL LAB
|
| The Workshop on Effects of Piles on Soil Properties was held at the U.S. Army Engineer Waterways Experiment Station on 13-l5 July 1993, and this report presents the proceedings of that workshop. The Workshop was conducted to evaluate needs for research to he conducted by the private sector, institutions of higher learning, or Government agencies concerning the changes in soil properties caused by emplacement of piles or other deep foundation ... |
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| Soil-Structured Interaction Parameters for Structured/Cemented Silts |
AUG 95 |
130 pages |
| Authors:
Timothy D. Stark; Robert M. Ebeling; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS INFORMATION TECHNOLOG Y LAB
|
| This report describes the research completed under the project titled "Soil-Structure Interaction Parameters for Structured Silts." The main objective of this research was to characterize the drained stress-strain behavior of naturally occurring structured/cemented silts. The results of this research were also used to develop a database of hyperbolic stress-strain and Mohr-Coulomb shear strength parameters for use in soil-structure interaction analyses involving structured/cemented silts. This research utilized extensive oedometer and isotropically ... |
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| The State of Practice for Determining the Stability of Existing Concrete Gravity Dams Founded on Rock |
JUN 95 |
67 pages |
| Authors:
James K. Meisenheimer; STONE AND WEBSTER ENGINEERING CORP ENGLEWOOD CO
|
| The U.S. Army Corps of Engineers is presently reanalyzing the stability of many of their concrete gravity dams due to new flood loading design requirements. Past practice has been to use to same stability criteria for reviewing existing structures as is used for designing new structures. Using the existing U.S. Army Corps of Engineer guidelines and conservative design parameters for cohesion, shear strength, and uplift, many of these dams have ... |
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| Engineering Design of a Throat Valve Experimental Facility |
JUN 95 |
124 pages |
| Authors:
Irving B. Osofsky; Duane T. Hove; William C. Derbes; SPARTA INC EL SEGUNDO CA
|
| This report covers the design of a gas dynamic test facility. The facility studied is a medium-scale blast simulator. The primary use of the facility would be to test fast-acting, computer-controlled valves. The valve would be used to control nuclear blast simulation by controlling the release of high pressure gas from drivers into an expansion tunnel to form a shock wave. The development of the valves themselves is reported elsewhere. ... |
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| Backcalculation of Flexible Pavement Moduli from Falling Weight Deflectometer Data Using Artificial Neural Networks |
APR 95 |
260 pages |
| Authors:
Roger W. Meier; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS GEOTECHNICAL LAB
|
| The goal of this research was to develop a method for backcalculating pavement layer moduli from FWD data in real time. This was accomplished by training an artificial neural network to approximate the backcalculation function using large volumes of synthetic test data generated by static and dynamic pavement response models. One neural network was trained using synthetic test data generated by the same static, layered-elastic model used in the conventional ... |
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| Little Dell Lake Foundation Report |
APR 95 |
841 pages |
| Authors:
ARMY ENGINEER DISTRICT SACRAMENTO CA
|
| ER No. 1110-1-1801, dated 1 April 1983, multiple letter SPDVG(3 (GG) 65-34, dated 8 August 1965 and SPK OM 335-2-2, dated 1 July 1978, outline the need and scope of foundation reports and authorize their preparation for major Civil Works projects. This report insures the preservation for future use of a complete record of foundation conditions encountered during construction and of methods used to adapt structures to those conditions. It ... |
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| Design Guide for Pile-Driven Plate Anchors |
MAR 95 |
57 pages |
| Authors:
James Forrest; Robert Taylor; Lora Bowman; NAVAL FACILITIES ENGINEERING SERVICE CENTER PORT HUENEME CA
|
| A user guide is presented for designing and installing plate anchors in the sea bottom using conventional pile driving techniques. This permits use of low cost, highly efficient, mooring anchors to meet a broad range of mooring requirements, including hurricane moorings for ships or other floating structures. This technique is particularly appropriate for heavily congested or confined areas. The anchors are suitable for various bottom deposits, including soft organic silts, ... |
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| Impact Behavior of the Active Zone within a Frozen Soil Profile |
FEB 95 |
148 pages |
| Authors:
Niguel Picornell; Soheil Nazarian; TEXAS UNIV AT EL PASO CENTER FOR GEOTECHNICAL AND HIGHWAY MATERIALS RESEARCH
|
| The report describes a lab experiment with a pavement profile subject to a freeze/thaw cycle. The 5 x 5 x 5 ft lab specimen was instrumented with thermocouples, resistivity sensors, and 48 embedded geophones. The records of these sensors were used to delineate the progress of a freezing front through the soil profile and to implement a tomographic survey. At selected intervals, a 550-lb impulse, lasting 15 milliseconds, was imparted ... |
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| SMIAC Bulletin, Volume 95- 2, January 1995. Soil Suction |
JAN 95 |
4 pages |
| Authors:
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
|
| Foundation and pavement damage often results from construction on reactive clay soils where the potential for differential movement is affected by moisture migration. One might expect moisture to move readily from soils with high water contents to those with low water contents. Such predictions are reasonable when the soils have similar grain sizes. But what happens when soil gradations are not alike? Moisture has actually been shown to move from ... |
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| CTWALL - A Microcomputer Program for the Analysis of Retaining and Flood Walls . Computer-Aided Structural Engineering (CASE) Project. (User's Guide) |
DEC 94 |
156 pages |
| Authors:
Michael E. Pace; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS INFORMATION TECHNOLOG Y LAB
|
| CTWALL is a computer program that assesses the stability of T-type retaining and flood walls. The purpose of the program is to assess these structures in accordance with EM 1110-2-2502 and ETL 1110.2-322. CTWALL will evaluate the overturning and sliding stability of a retaining or flood wall in accordance with the aforementioned criteria documents. This instruction report is organized to present CTWALL by describing the installation and equipment requirements, giving ... |
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| In Situ Shear Wave Measurements for Evaluating Dynamic Soil Properties at the Bannister Federal Complex, Kansas City, Missouri |
NOV 94 |
251 pages |
| Authors:
Jose L. Llopis; Thomas B. Kean Ii; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS GEOTECHNICAL LAB
|
| An in situ geophysical investigation consisting of crosshole and downhole shear wave (S-wave) seismic cone penetrometer tests (SCPT) was performed at the Bannister Federal Complex (BFC) located in Kansas City, Missouri. The SCPT was also used to collect cone tip resistance and sleeve friction data to aid in characterizing the soils at the site. The results of the SCPT were used to provide a continuous prediction of soil type and ... |
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| Proceedings of the International Conference Centrifuge 94 , Held in Singapore on 31 August-2 September 1994 |
02 SEP 94 |
829 pages |
| Authors:
C. F. Leung; F. H. Lee; T. S. Tan; SINGAPORE UNIV*
|
| The Technical Committee, TC2, on Centrifuge Testing of the International Society of Soil Mechanics and Foundation Engineering (ISSMFE) is the body coordinating the worldwide efforts to develop and promote the use of centrifuge modelling in geotechnical engineering. When the Conference Organising Conunittee was formed in February 1992, the themes of the conference were established as: (1) Centrifuge modelling in the study of natural and manmade disasters, as a contribution to ... |
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| Geo Engineering: A Vision for the 21st Century |
SEP 94 |
54 pages |
| Authors:
C. O. Magnell; CIVIL ENGINEERING RESEARCH FOUNDATION WASHINGTON DC
|
| This report, Geo-engineering: A Vision for the 21st Century, documents recent actions by acknowledged U.S. experts in the geo-engineering related disciplines of civil engineering to define the role of geo-engineering and geo-engineering in the 21st Century Approximately 50 of the nation's industry academic, and public sector leaders met for a two-day synthesis session held at the Xerox Document University in Leesburg, Virginia. There, they addressed issues such as: (1) who ... |
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| SMIAC Bulletin; Earthquake Engineering Research Program. Volume 94-4 |
AUG 94 |
4 pages |
| Authors:
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
|
| The Earthquake Engineering Research Program is an applied research program established by the U.S. Army Corps of Engineers to provide design procedures and criteria for assuring the seismic safety of many of our nations dams, locks, and levees. The need for the program was recognized by visionary leaders who realized the life safety risk. More than 200 reservoir dams, for example, are subject to potentially significant seismic shaking and most ... |
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| Proceedings of the Repair, Evaluation, Maintenance, and Rehabilitation Research Program Workshop on Levee Rehabilitation Held at Vicksburg, Mississippi on 17 March 1992 |
AUG 94 |
154 pages |
| Authors:
E. B. Perry; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
|
| Presented are the proceedings of the REMR Workshop on Levee Rehabilitation. The workshop was conducted to stimulate exchange of ideas and information regarding innovative methods for levee rehabilitation, directions for analytical and laboratory research, and possible field demonstrations of innovative methods. Presentations are made on seismic damage to levees, lime stabilization of levee slides, use of geogrids for levee slope repair, use of rockfill trenches to stabilize levees, use of ... |
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| Determination of Soil Moduli in Soil-Structure Systems on Highways. Report 1. Surface Waves in Sloping Ground |
APR 94 |
73 pages |
| Authors:
David W. Sykora; Don R. Alexander; Jose M. Roesset; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS GEOTECHNICAL LAB
|
| Data collection and processing methods for most seismic geophysical methods used to characterize engineering sites assume that the ground surface is level and that the sub-surface layers are horizontal and extend to infinity. These assumptions do not apply to some highway sites which exist on embankments or at bridge abutments or foundations. The objectives of the overall program are to examine the effects of complex geosystems (soil-rock structure) and anisotrophic ... |
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| User's Guide for the Incremental Construction, Soil-Structure Interaction Program SOILSTRUCT with Far-Field Boundary Elements |
MAR 94 |
|
| Authors:
T. Kuppusamy; Mark A. Zarco; Robert M. Ebeling; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS INFORMATION TECHNOLOG Y LAB
|
|
| Operating Manual for Hybrid Thermosyphons at the Gakona Power Plant, Alaska |
MAR 94 |
|
| Authors:
F. D. Haynes; Frederick C. Crory; Kurt V. Knuth; William F. Quinn; COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
|
 | A power plant building was constructed in 1990 at an over-the-horizon radar site in Gakona, Alaska. Since it was built on permafrost, thermal protection between the building and the underlying permafrost was included in the design, which included rigid board insulation and hybrid thermosyphons placed in the gravel fill under the building. Soil temperature is monitored with eight thermistor strings placed under and at the building perimeter. This manual describes ... |
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| In Situ Geophysical Investigation of the Pile Test Section, Sardis Dam, Mississippi |
JAN 94 |
71 pages |
| Authors:
Jose L. Llopis; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS GEOTECHNICAL LAB
|
| An in situ geophysical investigation consisting of crosshole and downhole shear wave (S-wave) and surface vibratory tests was performed at Sardis Dam, located on the Tallahatchie River in northwest Mississippi. The tests were conducted in a pile test section at the downstream toe of the dam. The purpose of the investigation was to determine changes in S-wave velocities, which are related to soil strength, in the test section due to ... |
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| Performance of Prefabricated Geocomposite Subdrainage System in an Airport Runway |
OCT 93 |
80 pages |
| Authors:
Barry J. Dempsey; ILLINOIS UNIV AT URBANA DEPT OF CIVIL ENGINEERING
|
| A Prefabricated Geocomposite Subdrainage (PGS) system installed in Runway 09-27 at Kewanee Municipal Airport in 1985 was evaluated. The study demonstrated that a PGS system could be installed within the active runway area at a distance of 12.5 ft on either side of the centerline. There were no problems with settlement or distresses along the installation location. Subdrainage outflow measurements indicated that 25% to 45% of the rainfall water infiltrated ... |
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| Repair, Evaluation, Maintenance, and Rehabilitation Research Program Incorporation of Wall Movement and Vertical Wall Friction in the Analysis of Rigid Concrete Structures on Rock Foundations |
OCT 93 |
51 pages |
| Authors:
SHANNON AND WILSON INC ST LOUIS MO
|
| This report presents recommendations for modifications to the present Corps of Engineers' stability analysis for concrete gravity structures. These modifications are intended for use in conjunction with the current analysis procedures for a more accurate assessment of the factor of safety of existing structures. It is concluded from this study that the effects of wall friction and strain compatibility are significant when the foundation rock modulus is relatively low. Gravity ... |
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| Soil-Structure Interaction Study of Red River Lock and Dam No. 1 Subjected to Sediment Loading |
SEP 93 |
286 pages |
| Authors:
Robert M. Ebeling; Reed L. Mosher; Kevin Abraham; John F. Peters; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS INFORMATION TECHNOLOG Y LAB
|
| Lock and Dam No. 1 on the Red River Waterway has experienced a serious siltation problem since its completion in 1983. This technical report summarizes the results of a soil-structure interaction analysis of a potentially permanent, low-maintenance solution to this problem, i.e., construction of a reinforced soil retaining wall adjacent to the riverside lock wall. The principal objective of this research was to assess potential lock performance after construction of ... |
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| Theoretical Manual for Analysis of Arch Dams |
JUL 93 |
108 pages |
| Authors:
Yysof Ghanaat; QUEST STRUCTURES EMERYVILLE CA
|
| This manual is intended to provide a theoretical background for the linear structural analysis of concrete arch dams. It is also designed to describe analytical procedures employed in the computer program, Graphics-Based Dam Analysis Program (GDAP)(Ghanaat 1993), and to provide an overview of the trial load method of arch dam design and analysis. The manual contains an overview and discussion of the general aspects of the finite element procedures, including ... |
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| Design and Development of a Miniature Column-Based Interface (MCBI) stress Gage |
APR 93 |
145 pages |
| Authors:
Denis D. Rickman; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS STRUCTURES LAB
|
| Tests are routinely conducted to evaluate the survivability, under simulated battlefield conditions, of buried military structures subjected to high-explosive loadings. The survivability assessments require the measurement of dynamic normal stresses induced at soil/structure interfaces. Stresses in excess of 10,000 psi and accelerations greater than 100,000 g's may be applied at interface locations. Normal-incidence interface stress gages currently used in such tests are incapable of accurately measuring stresses above 5,000 psi, ... |
|
| Advanced Panel and Connection System for Reinforced Soil |
MAR 93 |
120 pages |
| Authors:
C. Y. Tuan; D. H. Merkle; APPLIED RESEARCH ASSOCIATES INC ALBUQUERQUE NM
|
| The objective of this effort is to develop a dynamic reinforced soil design method that characterizes shock wave propagation through reinforced soil and the dynamic interaction with modular wall panel sections, and use this method to prepare a preliminary design for an anchored wall panel and soil reinforcing system for an airbase protective shelter. Mathematical and finite element models were used for parametric studies to provide design guidance. Based on ... |
|
| Corps of Engineers Structural Engineering Conference Held in St. Johns County, Florida on 8-12 July 1991. Volume 2 |
DEC 92 |
575 pages |
| Authors:
Lucian Guthrie; Paul K. Senter; H. W. Jones; CORPS OF ENGINEERS WASHINGTON DC
|
| This document includes material assembled as a completion report of the Corps of Engineers Structural Engineering Conference (CESEC 91) held in St. Johns County, FL, 8-12 July 1992. Under this cover are the agenda of the conference, abstracts and papers presented, a description of the exhibits, posters and demonstrations displayed, a list of attendees, and an evaluation of the conference by the participants. The 5-day conference included the presentation of ... |
|
| The Seismic Design of Waterfront Retaining Structures |
NOV 92 |
330 pages |
| Authors:
Robert M. Ebeling; Ernest E. Morrison Jr; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS INFORMATION TECHNOLOG Y LAB
|
| This technical report deals with the soil mechanics aspects of the design of waterfront retaining structures built to withstand the effects of earthquake loadings. It addresses the stability and movement of gravity retaining walls and anchored sheet pile walls, and the dynamic forces against the walls of drydocks and U-frame locks. The effects of wall displacements, submergence, liquefaction potential, and excess pore water pressures, as well as inertial and hydrodynamic ... |
|
| Computer-Aided Structural Engineering (CASE) Project. The Seismic Design of Waterfront Retaining Structures |
NOV 92 |
337 pages |
| Authors:
Robert M. Ebeling; Ernest E. Morrison Jr; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS INFORMATION TECHNOLOG Y LAB
|
| This technical report deals with the soil mechanics aspects of the design of waterfront retaining structures built to withstand the effects of earthquake loadings. It addresses the stability and movement of gravity retaining walls and anchored sheet pile walls, and the dynamic forces against the walls of drydocks and U-frame locks. The effects of wall displacements, submergence, liquefaction potential, and excess pore water pressures, as well as inertial and hydrodynamic ... |
|
| The Seismic Design of Waterfront Retaining Structures |
NOV 92 |
335 pages |
| Authors:
Robert M. Ebeling; Ernest E. Morrison Jr; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS INFORMATION TECHNOLOG Y LAB
|
| This technical report deals with the soil mechanics aspects of the design of waterfront retaining structures built to withstand the effects of earthquake loadings. It addresses the stability and movement of gravity retaining walls and anchored sheet pile walls, and the dynamic forces against the walls of drydocks and U-frame locks. The effects of wall displacements, submergence, liquefaction potential, and excess pore water pressures, as well as inertial and hydrodynamic ... |
|
| Evaluation of Thermal and Incremental Construction Effects for Monoliths AL-3 and AL-5 of the Melvin Price Locks and Dam |
SEP 92 |
384 pages |
| Authors:
Kevin Z. Truman; David J. Petruska; Abdelkader Ferhi; WASHINGTON UNIV ST LOUIS MO DEPT OF CIVIL ENGINEERING
|
| Two monoliths, a gate monolith and a chamber monolith, from the auxiliary lock at Melvin Price Locks and Dam near Alton, Illinois, are used to explore and evaluate the effects of creep, shrinkage, thermal loads, and construction sequence on massive concrete structures. The material and structural modelling, analysis procedures and software, and results are thoroughly discussed. The nonlinear material subroutines used to model aging modulus, autogenous shrinkage, creep, and smeared ... |
|
| The Incremental Construction Soil-Structure Interaction Program SOILSTRUCT (User's Guide) |
MAY 1992 |
96 pages |
| Authors:
Robert M. Ebeling; John F. Peters; G. W. Clough; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS INFORMATION TECHNOLOGY LAB
|
| This user's guide is for SOILSTRUCT, a two-dimensional, plane strain finite element program used in the incremental construction, soil-to-structure interaction analysis of earth retaining structures. The initial version of the program was developed by Professors G. W. Clough and J. M. Duncan (1969) for use in the analysis of Port Allen and Old River U-frame locks. The program has been enhanced during the last 20 years by Professor Clough and ... |
|
| Performance of Insulated Pavements at Newton Field, Jackman, Maine |
MAY 92 |
|
| Authors:
Maureen A. Kestler; Richard L. Berg; COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
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| In 1986, the runway at Newton Field, a small airport in Jackman, Maine, was reconstructed using a 2-in.-thick layer of extruded polystyrene insulation as part of the pavement structure. At the same time, a nearby town road was reconstructed using a conventional noninsulated pavement cross section for relatively heavy loads. Both pavements were monitored for frost penetration, frost heave, and seasonal changes in pavement strength. Since frost penetration beneath the ... |
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| User's Guide for the Incremental Construction Soil-Structure Interaction Program SOILSTRUCT |
MAY 92 |
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| Authors:
R. M. Ebeling; J. F. Peters; G. W. Clough; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS INFORMATION TECHNOLOG Y LAB
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| This user's guide is for SOILSTRUCT, a two-dimensional, plane strain finite element program used in the incremental construction, soil-to-structure interaction analysis of earth retaining structures. The initial version of the program was developed by Professors G. W. Clough and J. M. Duncan (1969) for use in the analysis of Port Allen and Old River U-frame locks. The program has been enhanced during the last 20 years by Professor Clough and ... |
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| Solution of Soil-Structure Interaction Problems by Coupled Boundary Element-Finite Element Method |
MAY 92 |
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| Authors:
T. Kuppusamy; Mark A. Zarco; Robert M. Ebeling; VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG DEPT OF CIVIL ENGINEERING
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| This report presents a substructure method for coupling the boundary element method (BEM) and the finite element method (FEM) in order to solve soil- structure interaction problems more accurately and efficiently so that the nonlinear effects can be included in the near field by FEM and the far field simulated by BEM. Linear boundary elements based on the Melan solution are coupled with bilinear isoparametric finite elements in a manner ... |
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Reports by Keyword(s)
*SOIL STRUCTURE INTERACTIONS
