索长误差对索穹顶结构初始预应力分布的敏感性分析  

ANALYSIS ON SENSITIVITY OF CABLE LENGTH ERROR TO INITIAL PRESTRESS DISTRIBUTION ON CABLED DOME STRUCTURE

作　　者：赵平[1] 孙善星[1] 周文胜 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]浙江精工钢结构有限公司,浙江绍兴312030

出　　处：《建筑技术》2013年第7期638-640,共3页Architecture Technology

摘　　要：基于ANSYS的可靠度(PDS)分析模块,针对某实际工程,采用Monte Carlo与响应面结合的方法,以每根拉索内力变化量及内力变化的平均值作为误差敏感性的判定指标,分析了索长误差同时存在时对索穹顶结构初始预应力分布的影响。研究表明,初始内力越小的索对结构整体预应力的分布影响越大,与产生误差的索联系越密切的索受索长误差的影响越大。Based on ANSYS PDS module, and the internal force variation of each cable both Monte Carlo and response surface are adopted in a project and its mean value are used as determination indexes of error sensitivity, to analyze the influence of cable length error on initial prestress distribution on cabled dome structure when cable length error exists in each cable. It is found that the smaller the initial internal force is, the greater the influence on overall prestress distribution will be, and the closer relationship the cable has to the error cable, the more obvious the sensitivity becomes to cable length error.

关 键 词：索穹顶 随机误差 敏感性 预应力 索长误差 

分 类 号：TU394[建筑科学—结构工程]