预制装配式连续小箱梁桥横向分布系数计算分析

Study on the Calculation Method of the Transverse Distribution of Load of the Continuous Precast Fabricated Girder Bridge

通过空间有限元法分析预制装配式连续小箱梁桥的活载效应,与各类荷载横向分布方法的计算结果进行对比分析。从而验证各类荷载横向分布方法的适用性和误差大小,据此提出了能够适用这类桥梁的横向分布计算方法。并给出具体修正系数。

In order to provide the theory gist of the transverse distribution of load of the continuous precast fabricated girder bridges. Based on equivalent simple beam conversion rigidity law basic principle, the traditional revision rigid crossbeam principle, the hinged girder principle, the rigid connected girder were used to the calculate transverse distribution of load of the continuous precast fabricated girder bridges, then analyzing contrast results that the traditional load transverse distribution calculation method and the space finite element method. According to the cause of the error has been analyzed of the traditional load transverse distribution calculation method contrast with the space finite element method, the suitability and the accuracy of the traditional load transverse distribution calcu- lalion method have been demonstrate.