双索面斜拉桥主梁的模糊可靠性设计  

Fuzzy reliability design of the main beam of a bridge stayed by double-surface cables

作　　者：郭炽斌[1] 尹益辉[2] 

机构地区：[1]西南科技大学土木工程与建筑学院 [2]中国工程物理研究院四川绵阳中物院

出　　处：《山西建筑》2009年第24期1-2,共2页Shanxi Architecture

摘　　要：为了将模糊可靠性设计理论应用于桥梁主梁的截面设计,利用ANSYS有限元软件对一双索面斜拉桥进行了静力分析,找出了该桥主梁弯矩效应最大的截面,同时分析了影响弯矩效应与主梁抗弯承载力的模糊因素,并利用模糊可靠度公式对主梁的正截面进行抗拉钢筋的配置,通过验算表明结果符合设计要求。In order to apply the theory of fuzzy reliability design of the main beam＇s section design of bridge, by using finite element software ANSYS to carry out a static solution to a bridge stayed by double-surface cables, the maximum bending moment section of the main beam of the bridge was determined. The characteristics of the fuzzy factors affecting the maximum moment and the bending capacity of the main beam were analyzed, and uses the fuzzy reliability formula to carry on the tensile reinforcement configuration to normal section of the main beam, through the checking calculation indicated that the result meets the design requirements.

关 键 词：斜拉桥 模糊因素 模糊可靠度 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]