横向陡坡T梁桥连续墩桩柱水平力分配的简化计算

Simplified Calculations of Horizontal Force Arrangement for Each Pile Column of Continuous T-beam Bridge at Transverse Steep Slope

本文针对位于横向陡坡,采用单排双桩柱式桥墩的连续T梁桥,推导在上部结构纵桥向水平力作用下连续墩桩柱水平力分配的简化计算公式,采用结构分析软件MIDAS建立某工程实例的有限元计算模型,对比分析简化公式和有限元模型的计算结果及柱高和横向地形坡度变化下简化公式和有限元模型的计算结果的差异,结果表明简化公式具有较好的准确性和适用性,可用于横向陡坡T梁桥连续墩桩柱的设计计算。

In order to simplify the analysis of the force performance of the pile column of continuous T-beam bridge at transverse steep slope,horizontal force simplified calculations for each pile column were deduced.A finite element(FE)model of an engineering example was also established by MIDAS civil software to compare with the simplified calculation.Besides,the difference between the simplified calculation and finite element model under different height of column and different slope of transverse ground were analyzed.The results indicated that the simplified calculation have good accuracy and applicability,and it can be used in the design of pile column of continuous T-beam bridge at transverse steep slope.