墩顶张拉预应力的花瓶墩受力分析  

Mechanical Analysis of Tensioned Prestressed Vase Pier Top

作　　者：张凯 ZHANG Kai(Guangdong Metallurgical Architectural Design and Research Institute Co.,Ltd.Guangzhou 510080,China)

机构地区：[1]广东省冶金建筑设计研究院有限公司,广州510080

出　　处：《广东土木与建筑》2022年第11期73-76,共4页Guangdong Architecture Civil Engineering

摘　　要：为了研究宽桥花瓶墩墩顶范围的空间受力特征,以实际桥梁项目为背景,采用有限元软件MIDAS/Civil和MIDAS FEA NX建立模型,并在分析中同时考虑预应力钢筋和普通钢筋的作用,结果表明:墩顶张拉预应力后墩顶拉应力及悬臂下缘主压应力均满足相关规范要求。In order to study the spatial stress characteristics of the top of vase piers with wide bridges,in the context of an actual bridge project,finite element software MIDAS/Civil and MIDAS FEA NX is used to establish a bridge model,and in the analysis,both prestressed reinforcement and ordinary reinforcement are considered.The calculation results show that the top tensile stress of the prestressed rear pier and the main compressive stress at the lower edge of the cantilever meet the requirements of the code.

关 键 词：花瓶形桥墩 D区 实体仿真模型 预应力 

分 类 号：U443.22[建筑科学—桥梁与隧道工程]