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3 D Computer Modeling Of Subsurface Conditions For Bridge Foundations
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Book Synopsis 3-D Computer Modeling of Subsurface Conditions for Bridge Foundations by :
Download or read book 3-D Computer Modeling of Subsurface Conditions for Bridge Foundations written by and published by . This book was released on 2000 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was conducted to evaluate the potential for using three-dimensional (3-D) computer modeling to assist Missouri Department of Transportation Soils and Geology personnel and Bridge Division personnel in developing accurate and realistic understanding of subsurface conditions for bridge structures. Secondary objectives of the study included developing a preliminary procedure for development of 3-D geologic models of bridge sites and identifying key issues to be addressed for more widespread use of 3-D modeling activities. The site of a proposed new bridge across the Missouri River near Lexington, Missouri was selected as a demonstration case study for 3-D geologic modeling. Several separate models of this site were developed during the project to demonstrate the different levels of abstraction for a 3-D model of a particular site. The computer models developed are presented and described in this report.
Book Synopsis Three-Dimensional Modeling of Ground-Pile Systems and Bridge Foundations by : Ning Wang
Download or read book Three-Dimensional Modeling of Ground-Pile Systems and Bridge Foundations written by Ning Wang and published by . This book was released on 2015 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Continued advancements in high-speed computing and increased availability of earthquake strong motion data have been allowing for further progress in the area of soil-structure-interaction (SSI). Efforts in this dissertation are mainly concerned with three-dimensional (3D) computational analyses of pile foundations and bridge-foundation-ground systems. This includes Finite Element (FE) modeling of ground-pile foundation systems, documentation and assessment of recorded bridge strong motion data, and identification of dynamic bridge-foundation system characteristics. Currently, simplified approaches, such as p-y curves or the foundation stiffness matrix representation, are employed mainly when considering Soil-Structure-Interaction. However, there is much interest in more representative modeling techniques in order to improve our assessments of seismic pile foundation response. In an effort to address this challenge, 3D FE numerical investigations are conducted related to the response of piles and pile groups under lateral load. Distribution of loads and moments among the piles within the group is investigated. Effects of permeability and loading rate on lateral pile response are addressed for saturated relatively impervious cohesionless soil condition. Insights concerning the soil-pile interaction mechanisms are obtained based on the conducted analyses of the soil-pile foundation subsystems. Furthermore, numerical studies are conducted of long-span highway bridge-foundation systems under seismic loading conditions. Three-dimensional FE models of two existing bridges at Eureka California (the Samoa Channel Bridge and the Eureka Channel Bridge) are developed. Methodologies combining numerical modeling with insights gained from strong motion sensor records are investigated to capture the essential structure-foundation-ground system-response mechanisms. Focus is placed on the evaluation of dynamic properties and validation of the bridge FE models based on the recorded earthquake response. An optimization tool (SNOPT) is employed to evaluate the bridge foundation lateral stiffness. The studies show that computational modeling, along with analysis of the recorded ground-pile foundation data, provide an effective mechanism for understanding the entire structure-foundation-ground system response. The OpenSees platform and the user-interfaces OpenSeesPL, MSBridge, as well as SNOPT are employed in various sections of the study. In the domain of highly expensive and time consuming foundation design and/or retrofit, major beneficial outcomes can result from adoption of analysis tools which have been calibrated/verified by actual recorded seismic performance data sets.
Book Synopsis Modeling of Seismic Wave Scattering for Large Pile Groups and Caissons by : Ignatius Po Lam
Download or read book Modeling of Seismic Wave Scattering for Large Pile Groups and Caissons written by Ignatius Po Lam and published by . This book was released on 2007 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents practical modeling procedures adopted in the bridge engineering community involving seismic dsigns and retrofits of long span bridges relative to treatment of wave propagation problems. It also discusses wave scattering issues arising from irregular foundation boundaries affecting seismic loading of the bridges, which is not explicitly considered in th current design practice. Wave scattering is generally implemented in the nuclear power plant industry for seismic designs of various containment systems often using frequency domain computer programs. To examine the subject of wave scattering for application to long span bridge foundations, systematic modeling is exercised using a time domain based computer program and verification is made against a frequency domain computer program. For present day seismic designs of major bridges, nonlinear time history analysis is a common procedure to examine seismic loading of the structure permitting plastic hinging and ductility to be implemented. Thus, the current trend is to adopt time domain based computer programs for performing wave scattering analyses which can also serve as a common platform to be used by both geotechnical and structural engineers for the global bridge model. A major benefit is to minimize the amount of work for data transfer and potential error arising from two different groups (geotechnical and structural engineers) working on different computer codes requiring different input/output. By using the same computer code by both geotechnical and structural engineers, many problems are eliminated. Typically, wave scattering analyses are conducted in the frequency domain. This report presents studies of wave scattering using a time domain computer program. The same computer program can be used by structural engineers to proceed with coding the superstructure model, directly using the results from the wave scatterings analysis. The report presents various sensitivity analyses in order to minimize wave reflection and refraction at the model's side boundaries. Numerical integration schemes and implementation of Rayleigh parameters are discussed. Careful examination of waves traveling the bottom boundary allows proper modeling of the half-space below the region of interest. The studies explore the effects from wave scattering on large pile groups and soft ground conditions, and findings on the frequency ranges where significant scattering is observed are reported. Large caissons are know to affect seismic wave scattering due to the large wave length implied by the dimensions of the foundation embedded in soil. Parametric studies are performed to examine the shaking level that is altered by the wave scattering mechanism. From the current findings, it appears that the wave scattering tends to reduce the shaking level, especially in the high frequency range, and hence is beneficial to the bridge design
Book Synopsis FHWA Nationally Coordinated Program of Highway Research, Development, and Technology. Progress Report. 1987 by :
Download or read book FHWA Nationally Coordinated Program of Highway Research, Development, and Technology. Progress Report. 1987 written by and published by . This book was released on 1987 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nationally Coordinated Program of Highway Research, Development, and Technology by :
Download or read book Nationally Coordinated Program of Highway Research, Development, and Technology written by and published by . This book was released on 1987 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Foundation Design: Principles and Practices by : Donald P. Coduto
Download or read book Foundation Design: Principles and Practices written by Donald P. Coduto and published by Pearson Higher Ed. This book was released on 2013-10-03 with total page 889 pages. Available in PDF, EPUB and Kindle. Book excerpt: For undergraduate/graduate-level foundation engineering courses. Covers the subject matter thoroughly and systematically, while being easy to read. Emphasizes a thorough understanding of concepts and terms before proceeding with analysis and design, and carefully integrates the principles of foundation engineering with their application to practical design problems.
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1988 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance Confirmation of Constructed Geotechnical Facilities by : A. J. Lutenegger
Download or read book Performance Confirmation of Constructed Geotechnical Facilities written by A. J. Lutenegger and published by . This book was released on 2000 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: GSP 94 contains 37 papers presented at a Specialty Conference on Performance Confirmation of Constructed Geotechnical Facilities, held in Amherst, Massachusetts, April 9-12, 2000.
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1988 with total page 966 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guide to Bridge Hydraulics by : Transportation Association of Canada
Download or read book Guide to Bridge Hydraulics written by Transportation Association of Canada and published by Thomas Telford. This book was released on 2004 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Basic hydraulic considerations - Channel types and behaviour relation to bridges - Basic hydraulic requirements - Hydraulic design procedures Hydrologic estimates - Statistical frequency analysis - Runoff modeling - Empirical methods - High water levels and stage-discharge relations - Extreme floods and risk Scour protection and channel control - Scour protection around bridge foundations - Erosion protection of banks and slopes - Design of rock riprap - Cannel control works Hydraulic aspects of construction, inspection and maintenance - Construction - Inspection - Maintenance Special problems - Tidal crossings - Inland basic crossings - Waves and waves protection - Physical modeling of bridge problems - Alluvial fans - Debris flow and torrents
Book Synopsis Guide Specifications for Seismic Isolation Design by :
Download or read book Guide Specifications for Seismic Isolation Design written by and published by AASHTO. This book was released on 2010 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edition is based on the work of NCHRP project 20-7, task 262 and updates the 2nd (1999) edition -- P. ix.
Download or read book Geotechnical abstracts written by and published by . This book was released on 1982 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis AASHTO Guide Specifications for LRFD Seismic Bridge Design by :
Download or read book AASHTO Guide Specifications for LRFD Seismic Bridge Design written by and published by AASHTO. This book was released on 2011 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work offers guidance on bridge design for extreme events induced by human beings. This document provides the designer with information on the response of concrete bridge columns subjected to blast loads as well as blast-resistant design and detailing guidelines and analytical models of blast load distribution. The content of this guideline should be considered in situations where resisting blast loads is deemed warranted by the owner or designer.
Book Synopsis The Deep Mixing Method by : Masaki Kitazume
Download or read book The Deep Mixing Method written by Masaki Kitazume and published by CRC Press. This book was released on 2013-02-21 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Deep Mixing Method (DMM), a deep in-situ soil stabilization technique using cement and/or lime as a stabilizing agent, was developed in Japan and in the Nordic countries independently in the 1970s. Numerous research efforts have been made in these areas investigating properties of treated soil, behavior of DMM improved ground under static and d
Book Synopsis Bridge Substructure and Foundation Design by : Petros P. Xanthakos
Download or read book Bridge Substructure and Foundation Design written by Petros P. Xanthakos and published by Prentice Hall. This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive book that covers all aspects of bridge substructure including analysis, design and detailing as used by both structural and geotechnical engineers involved in bridge engineering.
Book Synopsis A Directory of Computer Software Applications by :
Download or read book A Directory of Computer Software Applications written by and published by . This book was released on 1978 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the Institution of Civil Engineers by : Institution of Civil Engineers (Great Britain)
Download or read book Proceedings of the Institution of Civil Engineers written by Institution of Civil Engineers (Great Britain) and published by . This book was released on 1990 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
