斜交框架地道桥的参数分析

Parameters Analysis of Skew Frame Underpass Bridge

基于平面杆系模型和空间板壳模型,对斜交框架双孔地道桥进行受力特性分析,探讨了两种计算模型的适用性。基于空间板壳模型,对结构宽跨比、斜交角度、地基的基床系数进行参数分析,得出结构参数对整体受力的影响规律。

Based on the plane frame model and spatial shell model, the skew frame underpass bridge with two spans is analyzed for its mechanical characteristics. The applicability of the two kinds of calculation models is discussed. With the given spatial shell model, some parameters such as structure width - span ratio, skew angle and foundation coefficient of subgrade reaction are analyzed in detail. Then the influence laws of structure parameters on the structure mechanical characteristics are obtained.