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小半径曲线梁桥存在明显的横向效应,主要表现为支座径向反力大或径向位移大。该文提出了横向效应的6种导致因素,并以一联3跨曲线箱梁为例,分别针对刚性下部结构和柔性下部结构两种情况进行了横向效应的详细计算,分析了各种导致因素的影响程度和作用特点;同时针对3种不同的径向约束体系,进行了比较分析,讨论了可以最大限度降低横向效应的合理径向约束体系。
The small radius curved beam bridge has obvious lateral effect, which is mainly manifested as large bearing radial reaction force or large radial displacement. In this paper, six kinds of inducing factors of lateral effect are proposed. Taking a 3-span curved box girder as an example, detailed calculation of lateral effect is made for both rigid substructure and flexible substructure respectively. Various factors The influence degree and the function characteristic of the radial restraint system are also analyzed. At the same time, three kinds of radial restraint systems are compared and analyzed, and the reasonable radial restraint system that can minimize the lateral effect is discussed.