斜拉桥索塔锚固区局部应力分析方法及工程应用  

Analysis method and engineering application of anchorage zone of cable-stayed bridge pylon's prestress

作　　者：王旭[1] 陶蜀昆[1] 冉志红[1] 

机构地区：[1]云南大学城市建设与管理学院,云南昆明650091

出　　处：《云南大学学报（自然科学版）》2009年第S2期534-540,共7页Journal of Yunnan University(Natural Sciences Edition)

基　　金：云南大学校基金资助(2007Q011B);云南省科技厅计划项目资助(2008CD078)

摘　　要：大跨度斜拉桥索塔大多数采用混凝土塔,为抵抗索力水平分力产生的局部拉应力,需要布置预应力钢束.以在建的韩家陀长江大跨度斜拉桥为实例,利用有限元方法建立实体模型,并且模拟"#"字型预应力索的作用,对索塔预应力布置区受力状况进行分析研究,为改进索塔锚固区细部构造和预应力配置设计,提高结构的安全性能提供参考.Large-span cable-stayed bridge tower is now mostly concrete tower.In order to resist tensile stress generated by cable forces,It is necessary to layout prestressed cable.In this paper,take a large-span Hanjiatuo cable-stayed bridge in the construction of Yangtze River as an example,modeling by finite element method,simulating the '#'-shaped prestressed cable's effect on the tower layout area of prestressed force situation analysis and research.As a reference,the paper will improve the anchorage zone of prestressed structure and configuration design detail and the safety performance of the structure.

关 键 词：桥梁工程 斜拉桥 索塔锚固区 预应力 

分 类 号：U448.27[建筑科学—桥梁与隧道工程] U441.5[交通运输工程—道路与铁道工程]