Live Load Structural Index study on Small and Medium Span Steel‐Concrete Composite Bridges

ce/papers, vol. 6, pp. 1071–1079

Abstract

Abstract Steel plate and truss composite bridges are evaluated by Live Load Structural Index (LLSI) aiming on the balance between structural integrity and cost. In the span range of 20‐60m, four‐girder steel plate scheme and five‐girder steel plate scheme's LLSI are obtained based on probabilistic theory. The stress ratio of service to design status decreases in a power exponential law with the ascendance of LLSI. In terms of the steel truss concrete bridge, an optimized algorithm has been applied to analyze the composite truss bridge's LLSI, which suggests 160‐200 m · KN ‐1 as appropriate values for the engineering practice.

Authors 4

1. Zhihua Xiong corresponding Aachen

   RWTH Aachen University · Northwest A&F University

   Affiliation as printed

   Northwest A&F University Yangling China

   RWTH Aachen University Aachen Germany

   Northwest A&F University Yangling China

   RWTH Aachen University, Aachen, Germany

2. Zhenhua Pan

   Northwest A&F University

   Affiliation as printed

   Northwest A&F University Yangling China

   Northwest A&F University Yangling China

3. Xulin Mou

   Northwest A&F University

   Affiliation as printed

   Northwest A&F University Yangling China

   Northwest A&F University Yangling China

4. Xuyao Liu

   Northwest A&F University

   Affiliation as printed

   Northwest A&F University Yangling China

   Northwest A&F University Yangling China