活载作用下的梁式桥静力分析

Statical Analysis of Beam Bridge under Living Load

在桥梁设计中，为了考虑荷载横向分布的影响，常使用基于空间理论的某些简化方法。当采用计算机程序分析时，查表取得某些输入数据是不方便的。建议取空间结构为物理模型，采用有限条法解内力或位移影响面，然后用动态规划法搜索最不利的荷载位置及其最大值。

In bridge design,for taking account the influence of lateral distribution,some simplified methods based upon space theory may be used in convention.But it is not convenient to search through table for some input data when a computer program will be used in analysis.In this paper,it is suggested that the space structure will be taken as the physical model and the influence faces can be created by using finite strip method,than the dynamic programming method can be employed to search the most disadvantageous loading position and it's maximum value.