横坡对超大悬臂预应力盖梁的受力影响

Influence of Cross Slope on Stress of Oversized Cantilever Prestressed Bent Cap

摘要:

为研究超大悬臂预应力盖梁的受力特性，以福建省G228线香芹特大桥为工程背景，采用桥梁博士V4.4.1软件建立12种横坡组合的盖梁模型，分析横坡对盖梁受力的影响。计算表明，横坡对超大悬臂盖梁的应力分布影响较大，在数值分析中不可忽略，设计时应充分考虑横坡角度对应力的影响，以确保结构的安全性。

Abstract:

In order to study the stress characteristics of oversized cantilever prestressed bent caps, taking Xiangqin Bridge in G228 Line of Fujian Province as the engineering background, the bent cap model with 12 kinds of cross slope combination is established by Doctor Bridge V4.4.1 software to analyze the influence of cross slope on the stress of bent caps. The calculations show that the cross slope has a significant impact on the stress distribution of oversized cantilever bent caps, which cannot be ignored in numerical analysis. During the design, the influence of cross slope angle on stress should be fully considered to ensure the safety of the structure.