矩形墩顶部横向内力分析

Analysis of Transverse Internal Force at Top of Rectangular Pier

摘要:

采用通用有限元软件ABAQUS，针对矩形桥墩，对于规范JTG 3362—2018第8.4.7条关于墩顶横向拉力计算公式的适用条件进行了分析。结果表明：对于横向宽度、支座间距较小的矩形墩，规范计算公式具有较好的准确性，但对于横向宽度大于10 m、支座间距大于6 m的矩形墙式墩，规范计算公式的准确性较差，推荐采用有限元的计算方法。经计算，影响墩顶横向拉力的因素有桥墩横向宽度b、支座间距s、支座反力Fd。另外，矩形墩墩顶横向拉力大小在特定条件下不容忽视，其配筋需引起重视。

Abstract:

With the continuous development and progress of society, the aesthetic requirements of bridge design are getting higher and higher. Many bridges take the simple-supported beam-slab bridge as the basic system, and the decorative structure is added to form a landscape bridge so as to satisfy the enjoyment of the people. The design of a decorative cable-stayed arch bridge is summarized to provide the reference for the design of similar projects in the future.