基于不同类型响应面的生土窑居可靠度分析  

Reliability Analysis of Earth-Sheltered Dwellings Based on Different Kinds of RSM

作　　者：郭平功[1,2] 童丽萍[1] 

机构地区：[1]郑州大学土木工程学院,郑州450001 [2]河南城建学院土木工程系,平顶山467036

出　　处：《结构工程师》2012年第5期62-67,共6页Structural Engineers

基　　金：国家自然科学基金资助项目(50978233)

摘　　要：基于有限元强度折减法,提出"富裕安全系数"作为生土窑居承载能力极限状态的标准;采用二次多项式和RBF神经网络响应面法,对河南三门峡陕县的生土窑居的可靠度进行了研究。研究结果表明:两种响应面法所得的可靠指标、验算点接近,均适用于生土窑居的可靠度研究;该地区生土窑居可靠性较高,黄土的高黏聚力是营造生土窑居的天然有利条件。文中所述方法实现了功能函数为隐式情况下的生土窑居可靠度分析。Based on finite element strength reduction method, excess safety factor was suggested as the standard of ultimate limit state of earth-sheltered dwellings. The reliability of earth-sheltered dwellings in Sanmenxia city Henan province was investigated using the quadratic polynomial Response Surface Method （RSM） and RBF response surface method. The result shows that, the reliability index and checking point from two kinds of response surface methods are very close, and they are suitable for the reliability analysis of earth-sheltered dwellings, the reliability of the earth-sheltered dwellings in this area is fairly high, and the high cohesion of loess has natural advantage for the construction of earth-sheltered dwellings. The method in this paper carried out the reliability analysis of earth-sheltered dwellings without performance function.

关 键 词：生土窑居 富裕安全系数 响应面 黏聚力 

分 类 号：TU311.2[建筑科学—结构工程]