新旧桥梁拓宽拼接力学行为研究

Study on Mechanical Behavior of Widening and Splicing of Old and New Bridges

桥梁拓宽拼接已成为扩大交通运输流量、缓解公路压力的重要手段。为此,论文以某山区桥梁拓宽拼接工程为研究背景,基于有限元软件Midas Civil 2019建立了新旧桥梁数值模型,并分别研究了2种不同拼接方式的新旧桥梁结构的协同变形与受力规律。研究成果可为桥梁拓宽拼接方案的设计与施工提供参考。

Bridge widening and splicing has become an important means to expand traffic flow and alleviate highway pressure. Therefore,taking the widening and splicing project of a mountain bridge as the research background, this paper establishes the numerical model of the old and new bridges based on the finite element software Midas Civil 2019, and studies the cooperative deformation law of the old and new bridge structures with two different splicing methods. The research results can provide reference for the design and construction of bridge widening and splicing scheme.