基于拉压杆理论的桥墩结构受力分析  

Stress Analysis of Pier Structure Based on Strut-and-Tie Theory

作　　者：贺科 杜磊 谭巨良 曹清 HE Ke;DU Lei;TAN Juliang;CAO Qing(Guangdong Communication Planning & Design Institute Co., Ltd., Guangzhou 510507, China)

机构地区：[1]广东省交通规划设计研究院集团股份有限公司,广州510507

出　　处：《交通科技》2022年第3期84-89,共6页Transportation Science & Technology

摘　　要：随着城市建设对桥梁景观要求的提高,花瓶墩、TY墩等异形墩的应用越来越广泛。但常规墩型的受力分析方法不再适用于异形墩,因此,文中基于拉压杆模型,以实际工程项目为依托,对花瓶墩及TY墩进行受力分析。通过对比分析有限元模拟及规范公式计算得到的花瓶墩墩顶拉杆拉力结果,提出一种关于花瓶墩墩顶横向变宽度区高度h计算公式的拟合方法。结果表明,采用常规方法对异形墩墩顶拉力进行计算时误差较大,对于受力形式较为复杂的异形墩需采用有限元方法对其进行单独的受力分析求解。With the increasing demand of bridge landscape in urban construction,the application of vase pier,TY pier and other abnormity pier is more and more extensive.However,the conventional pier type analysis method is no longer applicable to the special-shaped pier.Based on the strut-and-tie model,taking the actual project as an example,the stress analysis of the vase pier and TY pier is carried out.A fitting method for calculating the height h of the transversely variable width zone at the top of the vase pier is put forward for reference by comparing and analyzing the results of the tension force at the top of the vase pier obtained by the finite element simulation and the standard formula.The analysis results show that there is a big error when using the conventional method to calculate the top tension of the special-shaped pier.For the special-shaped pier with complex stress forms,it is necessary to use the finite element method to analyze and solve its stress separately.

关 键 词：拉压杆模型 花瓶墩 TY墩 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]