Experimental And Numerical Investigation Of Integral Semi Integral Bridge Abutments For Texas Conditions PDF Download
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| Author | : Jakob Richard Walter |
| Publisher | : |
| Total Pages | : 420 |
| Release | : 2018 |
| Genre | : |
| ISBN | : |
Download Experimental and Numerical Investigation of Integral/semi-integral Bridge Abutments for Texas Conditions Book in PDF, ePub and Kindle
Integral abutment bridges (IAB), which are characterized by a lack of thermal expansion joints and bearings, expand into and contract away from retained backfill at the approaches. This behavior may lead to the development of increased lateral earth pressures or a long-term inward movement, as it has been observed in several structures. Additionally, it has been observed that repeated movements of IABs into and away from the adjacent soil because of annual and daily temperature fluctuations can lead to settlements in the approach roadways built on top of the retained fill. Yet, the possibly significant cost-effectiveness of the system has prompted the Texas Department of Transportation (TxDOT) to construct IAB and semi-integral abutment bridges (SIAB). The overall objective of the research is to investigate the geotechnical aspects relevant to the design of IAB/SIAB. The research project consists of four components: 1) a survey of state DOTs and Texas regarding IAB/SIAB design and construction, 2) an experimental program aimed to understand lateral earth pressure development and soil movement as a result of repeated movements, 3) a numerical component geared to predict soil response to repeated movements such as those in the experimental program, and 4) a field monitoring program involving instrumentation of three IAB/SIAB structures in the state of Texas. Surveys revealed that the anticipated approach to construct IAB/SIAB in Texas is viable. Furthermore, the compressible inclusion used by some states to prevent earth pressure ratcheting was proven to be successful in the laboratory and numerical components. Finally, the field monitoring program demonstrated two IAB/SIAB in Texas that have been performing well, and a third that has exhibited inadequate performance at the approach to bridge deck transition. In summary, the findings of the research have laid the foundation for development of design details to be presented to TxDOT for any future IAB/SIAB.
| Author | : Robert J. Frosch |
| Publisher | : Joint Transportation Research Program |
| Total Pages | : 149 |
| Release | : 2011-08-15 |
| Genre | : |
| ISBN | : 9781622600120 |
Download Long-Term Behavior of Integral Abutment Bridges Book in PDF, ePub and Kindle
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.
| Author | : Jean-Louis Briaud |
| Publisher | : Transportation Research Board |
| Total Pages | : 88 |
| Release | : 1997 |
| Genre | : |
| ISBN | : 9780309060073 |
Download Settlement of Bridge Approaches Book in PDF, ePub and Kindle
| Author | : Federal Highway Federal Highway Administration |
| Publisher | : |
| Total Pages | : 669 |
| Release | : 2020-07-19 |
| Genre | : |
| ISBN | : |
Download Engineering for Structural Stability in Bridge Construction Book in PDF, ePub and Kindle
This manual is intended to serve as a reference. It will provide technical information which will enable Manual users to perform the following activities:Describe typical erection practices for girder bridge superstructures and recognize critical construction stagesDiscuss typical practices for evaluating structural stability of girder bridge superstructures during early stages of erection and throughout bridge constructionExplain the basic concepts of stability and why it is important in bridge erection* Explain common techniques for performing advanced stability analysis along with their advantages and limitationsDescribe how differing construction sequences effect superstructure stabilityBe able to select appropriate loads, load combinations, and load factors for use in analyzing superstructure components during constructionBe able to analyze bridge members at various stages of erection* Develop erection plans that are safe and economical, and know what information is required and should be a part of those plansDescribe the differences between local, member and global (system) stability
| Author | : Martin P Burke Jr |
| Publisher | : John Wiley & Sons |
| Total Pages | : 272 |
| Release | : 2009-06-17 |
| Genre | : Technology & Engineering |
| ISBN | : 1444316370 |
Download Integral and Semi-Integral Bridges Book in PDF, ePub and Kindle
Worldwide, integral type bridges are being used in greater numbersin lieu of jointed bridges because of their structural simplicity,first-cost economy, and outstanding durability. In the UK and theUS states of Tennessee and Missouri, for example, the constructionof most moderate length bridges is based on the integral bridgeconcept. The state of Washington uses semi-integral bridges almostexclusively, while, depending on subfoundation characteristics, thestate of Ohio and others use a mix of these two bridge types. Integral and Semi-Integral Bridges has been written by apracticing bridge design engineer who has spent his entire careerinvolved in the origination, evaluation and design of such bridgesin the USA, where they have been in use since the late1930’s. This work shows how the analytical complexity due tothe elimination of movable joints can be minimized to negligiblelevels so that most moderate length bridges can be easily andquickly modified or replaced with either integral or semi-integralbridges. Bridge design, construction, and maintenance engineers; bridgedesign administrators; graduate level engineering students andstructural research professionals will all find this bookexceptionally informative for a wide range of highway bridgeapplications.
| Author | : National Research Council |
| Publisher | : National Academies Press |
| Total Pages | : 53 |
| Release | : 1974-02-01 |
| Genre | : Technology & Engineering |
| ISBN | : 0309022339 |
Download Expansion Joints in Buildings Book in PDF, ePub and Kindle
Many factors affect the amount of temperature-induced movement that occurs in a building and the extent to which this movement can occur before serious damage develops or extensive maintenance is required. In some cases joints are being omitted where they are needed, creating a risk of structural failures or causing unnecessary operations and maintenance costs. In other cases, expansion joints are being used where they are not required, increasing the initial cost of construction and creating space utilization problems. As of 1974, there were no nationally acceptable procedures for precise determination of the size and the location of expansion joints in buildings. Most designers and federal construction agencies individually adopted and developed guidelines based on experience and rough calculations leading to significant differences in the various guidelines used for locating and sizing expansion joints. In response to this complex problem, Expansion Joints in Buildings: Technical Report No. 65 provides federal agencies with practical procedures for evaluating the need for through-building expansion joints in structural framing systems. The report offers guidelines and criteria to standardize the practice of expansion joints in buildings and decrease problems associated with the misuse of expansions joints. Expansions Joints in Buildings: Technical Report No. 65 also makes notable recommendations concerning expansion, isolation, joints, and the manner in which they permit separate segments of the structural frame to expand and to contract in response to temperature fluctuations without adversely affecting the buildings structural integrity or serviceability.
| Author | : American Association of State Highway and Transportation Officials |
| Publisher | : AASHTO |
| Total Pages | : 38 |
| Release | : 2009 |
| Genre | : Bridges |
| ISBN | : 1560514698 |
Download LRFD Guide Specifications for the Design of Pedestrian Bridges Book in PDF, ePub and Kindle
| Author | : HNTB Corporation, Genesis Structures Inc, Structural Engineering Associates, and Iowa State University |
| Publisher | : Transportation Research Board |
| Total Pages | : 976 |
| Release | : |
| Genre | : |
| ISBN | : 0309274109 |
Download Innovative Bridge Designs for Rapid Renewal Book in PDF, ePub and Kindle
This report from the second Strategic Highway Research Program (SHRP 2), which is administered by the Transportation Research Board of the National Academies, documents the development of standardized approaches to designing and constructing complete bridge systems for rapid renewals.
| Author | : Shanzhi Shu |
| Publisher | : Springer Nature |
| Total Pages | : 125 |
| Release | : 2021-07-13 |
| Genre | : Science |
| ISBN | : 303080142X |
Download Advances in Geotechnical Engineering & Geoenvironmental Engineering Book in PDF, ePub and Kindle
This book includes a collection of researches that contains research data, discussions and conclusions focusing on several related geotechnical aspects of infrastructure. Topics include issues related to civil infrastructure such as temperature-induced lateral earth pressure on bridge abutment, subsidence of high speed rail and expressway, application of recycled rubber mats, railway ballast evaluation, hurricane protection floodwall, tunnel portal stability, deep excavation case study and properties of contaminated soils. Various types of research were used in the various studies, including field measurements, numerical analyses and laboratory measurements. This findings and results should lead to more resilient infrastructure design, maintenance and management, which will provide benefits to both civil engineering practitioners, researchers and students
| Author | : |
| Publisher | : Thomas Telford Publishing |
| Total Pages | : 328 |
| Release | : 1973 |
| Genre | : Technology & Engineering |
| ISBN | : |
Download Steel Box Girder Bridges Book in PDF, ePub and Kindle
