Combining Link Slab, Deck Sliding Over Backwall, and Revising Bearings

Combining Link Slab, Deck Sliding Over Backwall, and Revising Bearings
Author: Haluk Aktan
Publisher:
Total Pages: 313
Release: 2008
Genre: Bridge approaches
ISBN:

The research was designed to respond to the concerns of the designers in terms of the design of specific components and field performance of a limited number of bridges retrofitted with the link slab deck system. Three tasks were performed in this project. The first task was to review and synthesize information related to the behavior, performance, design, and analysis of jointless bridges with link slabs. The second task was to document the distress at the sleeper slab and bearings in Michigan jointless bridges associated with the link slab, approach slab, abutments, pier caps, and expansion joints. The third and final task was to develop analysis models of the jointless bridge deck system including link slab, bearings, abutment types (deck sliding over backwall and backwall sliding over abutment), approach slab, and sleeper slab.

High Skew Link Slab Bridge System with Deck Sliding Over Backwall Or Backwall Sliding Over Abutments

High Skew Link Slab Bridge System with Deck Sliding Over Backwall Or Backwall Sliding Over Abutments
Author: Haluk Aktan
Publisher:
Total Pages: 0
Release: 2011
Genre: Concrete bridges
ISBN:

A new bridge design and construction trend to help improve durability and rideability is to remove expansion joints over piers and abutments. One approach to achieve this is to make the deck continuous over the piers by means of a link slab while the girders remain simply supported. The need to implement link slabs is indicated by AASHTO LRFD section 2.5.2.4 which requires using a minimum number of expansion joints to improve rideability. Further, due to durability concerns associated with bridge deck joints, it is preferred to have a least number of joints or develop jointless decks. The expansion joints over the abutments can be removed by one of three methods: deck sliding over back wall, semi-integral abutments, and integral abutments. This results in expansion joints at either or both ends of the approaches. The design concerns other than link slab include backwall and wing-wall design and bearing movement. The behavior of a jointless bridge brings about many challenges to bridge designers. The complexity is augmented when skew is involved. This report complements an earlier report based on previous research on Combining Link Slab, Deck Sliding Over Backwall and Revising Bearings (Aktan et al., 2008) where the behavior of straight and moderately skew (skew 200) link slab bridges were investigated and design recommendations were developed. This report describes the behavior and performance of high skew (skew 200) jointless bridges with link slabs and two abutment configurations. These abutment configurations are deck sliding over backwall and backwall sliding over abutments (i.e. semi-integral abutments). Four tasks were performed in this project. The first task was to review and synthesize information related to the behavior, performance, design, and analysis of skew bridges. The second task was field assessment of skew bridge behavior under static truck loads and thermal loads. The third task was analytical and numerical analysis of skew link slabs. The final task was analytical and numerical analysis of skew sliding deck over backwall systems and semi-integral abutments. Design recommendations are developed based on literature, field assessment data analysis, finite element modeling, and subsequent simulations of the numerous models developed in this project. One recommendation deals with the skew link slab design and the remaining recommendations are for bearing selection and selection and design of a transverse restraint system at abutments of skew link slab bridges.

Bridge Bearings and Expansion Joints

Bridge Bearings and Expansion Joints
Author: D J Lee
Publisher: CRC Press
Total Pages: 221
Release: 1994-11-03
Genre: Architecture
ISBN: 1482266997

This book provides a guide to movement and restraint in bridges for bridge engineers and will enable them to draw up design calculations and specifications for effective installation, and satisfactory service and durability of bearings and joints. It has been fully revised and updated in line with current codes and design practice, modern developme

Engineering for Structural Stability in Bridge Construction

Engineering for Structural Stability in Bridge Construction
Author: Federal Highway Federal Highway Administration
Publisher:
Total Pages: 669
Release: 2020-07-19
Genre:
ISBN:

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

AASHTO Guide Specifications for LRFD Seismic Bridge Design

AASHTO Guide Specifications for LRFD Seismic Bridge Design
Author:
Publisher: AASHTO
Total Pages: 271
Release: 2011
Genre: Bridges
ISBN: 156051521X

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.

Bridge Engineering Handbook

Bridge Engineering Handbook
Author: Wai-Fah Chen
Publisher: CRC Press
Total Pages: 690
Release: 2019-09-11
Genre: Technology & Engineering
ISBN: 1000005925

First Published in 1999: The Bridge Engineering Handbook is a unique, comprehensive, and state-of-the-art reference work and resource book covering the major areas of bridge engineering with the theme "bridge to the 21st century."