1 - 7 of 7 articles
Some existing bridge girders do not satisfy current shear strength requirement and so study of this strength seems essential. Shear strength of pre-stressed concrete bridge girders with and without vertical prestressing is studied in this paper. First several models of prestressed concrete beams...
This paper presents a reliability-based condition assessment procedure of multispan masonry arch bridges. Considering axle load as assessment criterion, safety margins (limit state functions) are introduced for each arch of the bridge. The introduced safety margins consist of two variables:...
A method for the identification of vehicle axle loads on slab-on-girder bridges is presented in this paper. The method is based on the development of a bridge specific static influence line matrix and the use of an optimization method combined with a pattern search algorithm. A 1/3 scale...
Load testing is gaining popularity among bridge owners to take advantage of the actual load capacity that can not be estimated using conservative analyses. This paper provides an easy, generalized model for evaluating the value of load testing using costs and benefits of load tests. Both...
In October of 2007 the AASHTO LRFD Bridge Design Specification became the mandatory design specifications for highway structures in the United States. This has introduced a number of changes in the design and analysis procedures that engineers have to follow. This paper evaluates the differences...
This paper presents a case study of the Buffalo Creek bridge structure under two conditions, one with an empirical sandwich deck referred to as “old deck design” and the other with traditional deck referred to as “new deck design”. The focus of the study is to assess the performance of the...
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