倒T形盖梁的牛腿设计与配筋优化研究  

Research on Design and Reinforcement Optimization of Inverted T-shaped Bent Cap Bracket

作　　者：杨培伟[1] 肖若鹏 YANG Pei-wei;XIAO Ruo-peng(CCCC Second Highway Consultants Co.Ltd.,Wuhan 430056,China)

机构地区：[1]中交第二公路勘察设计研究院有限公司,武汉市430056

出　　处：《公路》2024年第7期120-124,共5页Highway

摘　　要：大跨径倒T形盖梁跨中截面纵向受力属于B区结构,横向属于D区结构,盖梁牛腿受力为两种类型的耦合作用。为研究耦合作用下的结构配筋方案,首先采用实体有限元法分析了结构的受力情况,在探明主应力和等效应力分布之后,采用规范方法进行配筋设计,然后根据有限元模拟结果构建拉压杆模型,复核计算盖梁牛腿的配筋方案。结果表明,采用规范方法进行配筋,具有一定承载力富余,可以保证结构安全性。The longitudinal force of the mid span section of the large-span inverted T-shaped bent cap belongs to the B-zone structure,and the transverse force belongs to the D-zone structure.The force on the bent cap bracket is a coupling effect of these two types.To study the reinforcement scheme of the structure under coupling action,the solid finite element method is firstly used to analyze the stress situation of the structure.After determining the distribution of principal stress and equivalent stress,the standard method is used for reinforcement design.Then,a tension and compression rod model is constructed based on the finite element simulation results,and the reinforcement scheme of the cover beam bracket is calculated through re-evaluation.The results indicate that using the standard requirements for reinforcement has a certain bearing capacity surplus and can ensure structural safety.

关 键 词：桥梁工程 盖梁 牛腿 配筋方案 优化研究 

分 类 号：U443.25[建筑科学—桥梁与隧道工程]