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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

29卷

期数:

2012年04期

页码:

59-66

栏目:

出版日期:

2012-12-30

文章信息/Info

Title:

Research on Generalized Reliability Index of Underground Cave Dwellings Based on Strength Reduction Method

作者:

郭平功^1,2,童丽萍¹

1. 郑州大学 土木工程学院,河南 郑州 450001; 2. 河南城建学院 土木工程系,河南 平顶山 467036

Author(s):

GUO Ping-gong^1,2, TONG Li-ping¹

1. School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, Henan, China; 2. Department of Civil Engineering, Henan University of Urban Construction, Pingdingshan 467036, Henan, China

关键词:

强度折减法;  广义可靠指标;  随机变量;  窑腿宽度;  窑室跨度

Keywords:

strength reduction method;  generalized reliability index;  random variable;  cave leg width;  cave span

分类号:

TU761.2

DOI:

-

文献标志码:

A

摘要:

为分析地坑窑居在役百年甚至数百年的深层次原因,对其广义可靠指标进行了研究。以确定性的有限元分析为基础,采用强度折减法建立了窑腿宽度、窑室跨度与富裕安全系数间的映射关系,用不含交叉项的二次多项式响应面函数代表地坑窑居的功能函数,进而求得广义可靠指标与验算点,并对河南陕县地坑窑居的广义可靠指标进行了研究。结果表明:该地区地坑窑居的可靠性较高; 考虑窑腿宽度和窑室跨度2个随机变量间的相关性,得到的广义可靠指标稍高; 相对于窑室跨度,窑腿宽度对广义可靠指标的影响占绝对主要地位; 所建立的地坑窑居的广义可靠指标的研究方法,可用于任意地区地坑窑居的可靠度评价,并可推广至多随机变量的情况,还可用于指导地坑窑居的营造、修缮。

Abstract:

In order to uncover the reason that underground cave dwellings could survive hundreds of years, the generalized reliability index of underground cave dwellings was researched. Based on definitive finite element analysis and strength reduction method, relations between cave leg width, cave span and excess safety factor were established, which were expressed by quadratic polynomial response surface function without cross terms. The generalized reliability index and checking point could be solved. The generalized reliability index research of underground cave dwellings in Shan County, Henan Province was done. The results show that the reliability of underground cave dwellings in this village is high, and higher if the correlation between cave leg width and cave span is considered. The influence of cave leg width on generalized reliability index is in major position contrasting to cave span. The researching method of generalized reliability index of underground cave dwelling, can be used to evaluate reliability of underground cave dwellings in every district, even in the situation of more random variables, and can guide the construction and renovation of underground cave dwellings.

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相似文献/References:

[1]朱彦鹏,马金莲,叶帅华,等.基于强度折减法的边坡岩土体抗剪强度参数反演[J].建筑科学与工程学报,2016,33(03):36.
　ZHU Yan-peng,MA Jin-lian,YE Shuai-hua,et al.Inversion of Shear Strength Parameters for Rock and Soil of Slope Based on Strength Reduction Method[J].Journal of Architecture and Civil Engineering,2016,33(04):36.

备注/Memo

备注/Memo:

收稿日期:2012-07-08
基金项目:国家自然科学基金项目(50978233)
作者简介:郭平功(1982-),男,河南南阳人,河南城建学院讲师,郑州大学工学博士研究生,E-mail:pgguo@hncj.edu.cn。

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更新日期/Last Update: 2012-12-20