矩形墩顶部横向内力分析

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F_d。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。

Analysis of Transverse Internal Force at Top of Rectangular Pier

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.