水滴型独塔混合梁斜拉桥结构总体设计与数值计算

The Overall Design and Numerical Calculation of the Water Droplet Type Single-tower Hybrid Beam Cable-Stayed Bridge Structure

文章以一座水滴型独塔混合梁斜拉桥为工程背景,首先介绍了桥梁结构关键构件设计参数取值,然后建立整体桥梁有限元模型,研究了成桥阶段及施工阶段的桥梁结构受力特征,最后对斜拉桥混凝土箱梁横梁局部应力进行计算分析。结果表明:索、塔、梁三个重要构件受力均满足规范要求,且有一定的安全储备。从而论证了此项目结构构件参数取值的合理性,相关设计参数取值可为同类型项目设计和施工提供参考。

Taking a water droplet type single-tower hybrid beam cable-stayed bridge as the engineering background,the design parameter values of the key components of the bridge structure are introduced firstly.Then,the finite element model of the whole bridge is established,and the stress characteristics of the bridge structure during the bridge completion and construction stages are studied.Finally,the local stress of transverse beam of the concrete box girder of the cable-stayed bridge is calculated and analyzed.The results show that the three important components of cable,tower and beam all meet the requirements of the specifications and have certain safety reserves.The rationality of the parameter values of the structural components of this project is demonstrated,and the relevant design parameter values can provide reference for the design and construction of similar projects.