摘要
针对弦支筒壳结构的特点,采用基于响应面函数的蒙特卡罗法,研究了温度作用下弦支筒壳结构的可靠性能,并对其承载力和变形两种失效模式下的可靠性进行了分析。计算分析表明:温度作用下,索材不同时,尤其是位移失效模式下的可靠度结果差别较大;拉索为钢丝束时的可靠度变化幅度较大,索体为钢拉杆和钢绞线时的可靠度变化幅度较小;拉索为钢丝绳时的可靠度则较其他索材均有所降低。在进行设计时,需要考虑选取不同索材所造成的预应力损失的影响。
Aiming at the newly advanced characteristics concerning the structure of cable supported barrel vault,the Monte Carlo simulation on the response surface was applied.The reliable performance research of cable supported barrel vault considering temperature impact was carried out,and the reliability of two failure modes under strength and displacement was analyzed.The results indicate that the change of cable type has a great impact on the reliability of structure especially on the displacement failure modes.The range of reliability is large when steel tendon cable is chosen,but it is weak when choose steel strand cable and steel rod.The reliability value is lower than any other cables when steel wire rope cable is chosen.Therefore,it is necessary to consider the influences of prestress losses with different cable types in the process of design.
出处
《建筑结构》
CSCD
北大核心
2010年第7期112-114,118,共4页
Building Structure
基金
国家自然基金资助项目(50778122)
新世纪优秀人才支持计划资助(NCET-06-0228)
关键词
弦支筒壳
温度作用
拉索
预应力损失
可靠度
cable supported barrel vault
temperature action
cable
prestress loss
reliability
