Download or read book Temperature Effects on Integral Abutment Bridges During Final Construction Stages written by David Earl Holman and published by . This book was released on 1972 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Temperature Effects on Integral Abutment Bridges During Early Construction Stages written by Mumtaz Bashir Sarsam and published by . This book was released on 1972 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Long Term Behavior of Integral Abutment Bridges written by Robert J. Frosch and published by Joint Transportation Research Program. This book was released on 2011-08-15 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integral abutment (IA) construction has become the preferred method over conventional construction for use with typical highway bridges. However, the use of these structures is limited due to state mandated length and skew limitations. To expand their applicability, studies were implemented to define limitations supported by rational analysis rather than simply engineering judgment. Previous research investigations have resulted in larger length limits and an overall better understanding of these structures. However, questions still remain regarding IA behavior; specifically questions regarding long-term behavior and effects of skew. To better define the behavior of these structures, a study was implemented to specifically investigate the long term behavior of IA bridges. First, a field monitoring program was implemented to observe and understand the in-service behavior of three integral abutment bridges. The results of the field investigation were used to develop and calibrate analytical models that adequately capture the long-term behavior. Second, a single-span, quarter-scale integral abutment bridge was constructed and tested to provide insight on the behavior of highly skewed structures. From the acquired knowledge from both the field and laboratory investigations, a parametric analysis was conducted to characterize the effects of a broad range of parameters on the behavior of integral abutment bridges. This study develops an improved understanding of the overall behavior of IA bridges. Based on the results of this study, modified length and skew limitations for integral abutment bridge are proposed. In addition, modeling recommendations and guidelines have been developed to aid designers and facilitate the increased use of integral abutment bridges.

Download or read book The Effects of Temperature on Skewed Integral Abutment Bridges written by Laura Marie Ryan and published by . This book was released on 2009 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Innovative Bridge Design Handbook written by Alessio Pipinato and published by Elsevier. This book was released on 2021-09-08 with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt: Innovative Bridge Design Handbook: Construction, Rehabilitation, and Maintenance, Second Edition, brings together the essentials of bridge engineering across design, assessment, research and construction. Written by an international group of experts, each chapter is divided into two parts: the first covers design issues, while the second presents current research into the innovative design approaches used across the world. This new edition includes new topics such as foot bridges, new materials in bridge engineering and soil-foundation structure interaction. All chapters have been updated to include the latest concepts in design, construction, and maintenance to reduce project cost, increase structural safety, and maximize durability. Code and standard references have been updated. Completely revised and updated with the latest in bridge engineering and design Provides detailed design procedures for specific bridges with solved examples Presents structural analysis including numerical methods (FEM), dynamics, risk and reliability, and innovative structural typologies

Download or read book Experimental and Analytical Study of Integral abutment Bridges written by Brad Harold Sayers and published by . This book was released on 2000 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integral-abutment bridges eliminate the expansion joints that are generally used to accommodate bridge length changes due to daily and annual temperature variations. Additional stresses and displacements due to the thermal loading are induced in these indeterminate structures that are not typically associated with bridge structures supported on pins and rollers. The goal of this research was to determine the effects of the thermal loading on two integral-abutment bridges. Extensive field monitoring was conducted on two, in-service, skewed, integral-abutment bridges located in central Iowa. The experimental program included long-term monitoring of longitudinal and transverse abutment displacements, relative displacements of the superstructure over the pier caps, strains in selected steel HP-shaped piles supporting the abutments, strains in several PC girders, bridge member temperatures, and end fixity of selected piles and girders in the abutments. The experimental temperature and displacement data was used to calibrate an ANSYS, finite-element model for each of the two monitored bridge structures. Experimental strains were verified and maximum strains due to the thermal loading were predicted for various members using the finite-element models.

Download or read book Masters Theses and Doctoral Dissertations in the Pure and Applied Sciences Accepted by Colleges and Universities of the United States written by and published by . This book was released on 1971 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Continuous and Integral Bridges written by B. Pritchard and published by CRC Press. This book was released on 1994-06-23 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the invited contributions to the 1993 Henderson Colloquium organised by the British Group of IABSE (International Association for Bridge and Structural Engineering). It provides an international review of new techniques of designing and constructing joint-free bridges - an approach which is rapidly being developed and used in many parts of the world.

Download or read book Behavior of Concrete Integral Abutment Bridges written by Jimin Huang and published by . This book was released on 2004 with total page 726 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Substructure Stiffness on the Performance of Integral Abutment Bridges Under Thermal Loads written by Suhail Albhaisi and published by . This book was released on 2012 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research investigates the effect of substructure stiffness on the performance of short and medium span length Integral Abutment Bridges (IABs) subjected to thermal load. Various parameters such as foundation soil stiffness, pile orientation, pile type, and abutment geometry on the performance of IABs, are considered. Three-dimensional (3D) Finite Element (FE) models were developed using the FE software LUSAS to capture the behavior of IABs including the variations in displacement and rotation in the transverse direction for the various components of the superstructure as well as the substructure. Field measurements from a recently constructed two-span steel girder IAB were utilized to validate the 3D FE models. Using the validated model, a parametric study was carried out to study the effect of the above parameters on the performance of IABs under thermal loading using AASHTO-LRFD temperature ranges. The study shows that among the investigated parameters, the foundation soil stiffness stands as the most important factor that affects the performance of IABs. In general, the bridge behavior is more sensitive to the foundation soil stiffness during bridge contraction. The results from the study show considerable variations in displacement and rotation in the transverse direction for the various components of the superstructure and the substructure in relatively wide IABs. This research suggests that Prestressed Concrete Piles can be a viable alternative to steel H-Piles for short span bridges. It was also noticed that the stress level due to thermal loading in the various components of the bridge can be significantly reduced by enclosing the top part of the pile in an enclosure filled with crushed stone or loose sand. Moreover, the research suggests that the pile orientation has a minimum effect on the behavior of IABs. It also suggests that a slight increase in the abutment height can significantly reduce the displacement and rotation along the piles during bridge expansion. The research also suggests that 3D models are necessary to capture the behavior of IABs especially during bridge expansion. The research provides simple equations and charts to help bridge engineers calculate the displacement and rotation along the substructure.

Download or read book Integral Bridges written by George L. England and published by Thomas Telford. This book was released on 2000 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work was commissioned by the Highways Agency to produce guidance for bridge designers by addressing the thermally induced soil/structure integration problem created by environmental changes of temperature and the associated cyclical displacements imposed on the granular backfill to the bridge abutments. It develops a better theoretical understanding of the cyclic performance, in particular the strain racheting in the backfill soil when in contact with a stiff structure. It also identifies the governing soil parameters and examines their influence in the interaction problem, develops numerical modelling procedures to predict interactive soil behaviour, and identifies and quantifies the controlling features of bridge structures relevant to the interaction problem.

Download or read book 3D Finite Element Analysis of Integral Abutment Bridges Subjected to Thermal Loading written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Integral Abutment Bridges (IABs) are Jointless Bridges whereby the deck is continuous and monolithic with abutment walls. IABs are outperforming their non-integral counterparts in economy and safety. Their principal advantages are derived from the absence of expansion joints and sliding bearings in the deck, making them the most cost-effective system in terms of construction, maintenance, and longevity. The main purpose of constructing IABs is to prevent the corrosion of structure due to water seepage through joints. The simple and rapid construction provides smooth, uninterrupted deck that is aesthetically pleasing and safer for riding. The single structural unit increases the degree of redundancy enabling higher resistance to extreme events. However, the design of IABs not being an exact science poses certain critical issues. The continuity achieved by this construction results in thermally induced deformations. These in turn introduce a significantly complex and nonlinear soil-structure interaction into the response of abutment walls and piles of the IAB. The unknown soil response and its effect on the stresses in the bridge, creates uncertainties in the design. To gain a better understanding of the mechanism of load transfer due to thermal expansion, which is also dependent on the type of the soil adjacent to the abutment walls and piles, a 3D finite element analysis is carried out on a representative IAB using state-of-the-art finite element code ABAQUS/Standard 6.5-1. A literature review focusing on past numerical models of IABs is presented followed by details of the numerical model developed in this study using the interactive environment ABAQUS/CAE 6.5-1 along with the analysis details. A discussion of results for the analysis of the IAB with three different soil conditions and each experiencing three different temperature change scenarios is presented. Conclusions of the study and recommendations for future research wrap up the thesis. The advancement of knowledge enabled by this research will provide a basis for introduction of new guidelines in Kansas Bridge Design Manual.

Download or read book Field Study of Integral Abutment Bridges written by Matthew Earl Thomas and published by . This book was released on 1999 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: The experimental investigation consisted of determining longitudinal and transverse abutment movements, strains in H-shaped steel piles, strains in prestressed concrete girders, temperature distributions, and the fixity of the piles and girders in the abutment. Data was collected to measure effects of daily and seasonal temperature variations. A large volume of data was collected and analyzed. Preliminary results show that the bridges are performing satisfactorily with no sign of distress. In addition to providing experimental evidence of the behavior of the two bridges, the data will be used to calibrate analytical models in subsequent research to be conducted on these bridges.

Download or read book Field Testing of Integral Abutments written by R. Abendroth and published by . This book was released on 1998 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Integral abutment bridges are constructed without an expansion joint in the superstructure of the bridge; therefore, the bridge girders, deck, abutment diaphragms, and abutments are monolithically constructed. The abutment piles in an integral abutment bridge are vertically orientated, and they are embedded into the pile cap. When this type of a bridge experiences thermal expansion or contraction, horizontal displacements are induced at the top of the abutment piles. The flexibility of the abutment piles eliminates the need to provide an expansion joint at the inside face to the abutments: Integral abutment bridge construction has been used in Iowa and other states for many years. This research is evaluating the performance of integral abutment bridges by investigating thermally induced displacements, strains, and temperatures in two Iowa bridges. Each bridge has a skewed alignment, contains five prestressed concrete girders that support a 30-ft wide roadway for three spans, and involves a water crossing. The bridges will be monitored for about two years.

Download or read book Design Assessment Monitoring and Maintenance of Bridges and Infrastructure Networks written by Fabio Biondini and published by Routledge. This book was released on 2020-08-14 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Relevant advances have been accomplished by the scientific community and engineering profession in the design, assessment, monitoring, maintenance, and management of sustainable and resilient bridge structures and infrastructures. These advances have been presented and discussed at The Sixth International Conference on Bridge Maintenance, Safety And Management (IABMAS 2012), held in Stresa, Italy, from 8 to 11 July 2012 (http://www.iabmas2012.org). IABMAS 2012 has been organised on behalf of the International Association for Bridge Maintenance And Safety (IABMAS) under the auspices of Politecnico di Milano. This book collects the extended versions of selected papers presented at IABMAS 2012 and invited papers originally published in a Special Issue of Structure and Infrastructure Engineering. These papers provide significant contributions to the process of making more rational decisions in bridge design, assessment, monitoring and maintenance. The editors would like to thank the authors for their contributions and hope that this collection of papers will represent a valuable reference for scientific research and engineering applications in the fields of design, assessment, monitoring, and maintenance of bridges and infrastructure networks.

Download or read book Integral Bridges written by George L. England and published by Thomas Telford Publishing. This book was released on 2000 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work was commissioned by the Highways Agency to produce guidance for bridge designers by addressing the thermally induced soil/structure integration problem created by environmental changes of temperature and the associated cyclical displacements imposed on the granular backfill to the bridge abutments. It develops a better theoretical understanding of the cyclic performance, in particular the strain racheting in the backfill soil when in contact with a stiff structure. It also identifies the governing soil parameters and examines their influence in the interaction problem, develops numerical modelling procedures to predict interactive soil behaviour, and identifies and quantifies the controlling features of bridge structures relevant to the interaction problem.

Download or read book Creep and Shrinkage Effects on Integral Abutment Bridges written by Sivakumar Munuswamy and published by . This book was released on 2004 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: