[1]程选生,朱海燕,田瑞瑞,等.无衬砌圆形黄土隧洞围岩地震稳定系数[J].深圳大学学报理工版,2011,28(No.2(095-188)):119-124.
 CHENG Xuan-sheng,ZHU Hai-yan,TIAN Rui-rui,et al.The seismic stability safety factors of soil surrounding unlined circular loess cave[J].Journal of Shenzhen University Science and Engineering,2011,28(No.2(095-188)):119-124.
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无衬砌圆形黄土隧洞围岩地震稳定系数()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第28卷
期数:
2011年No.2(095-188)
页码:
119-124
栏目:
土木建筑工程
出版日期:
2011-03-20

文章信息/Info

Title:
The seismic stability safety factors of soil surrounding unlined circular loess cave
文章编号:
1000-2618(2011)02-0119-06
作者:
程选生朱海燕田瑞瑞王俊岭
兰州理工大学土木工程学院,兰州 730050
Author(s):
CHENG Xuan-shengZHU Hai-yanTIAN Rui-ruiand WANG Jun-ling
School of Civil Engineering,Lanzhou University of Technology,Lanzhou 730050,P.R.China
关键词:
地下空间工程地震黄土无衬砌圆形隧洞围岩安全系数
Keywords:
underground spaceearthquakeloessunliningcircular cavesurrounding soilsafety factors
分类号:
TU 94+1
文献标志码:
A
摘要:
为得到地震下无衬砌圆形黄土隧洞的围岩稳定安全系数,应用抗剪强度折减法,建立静力与动力分析模型,采用ANSYS软件分别对圆形无衬砌黄土隧洞进行重力和地震下的动力响应分析,得到地震下无衬砌圆形黄土隧洞的剪切破坏规律,讨论了隧洞直径、覆土厚度以及地震烈度对无衬砌圆形黄土隧洞围岩抗剪强度安全系数的影响.结果表明,在重力和地震作用下,对介于1.15~2.00的无衬砌圆形黄土隧洞的抗剪强度安全系数只能满足初次衬砌要求,不能满足使用阶段要求.为保证结构的安全可靠,建议开挖之后尽快进行二次衬砌.
Abstract:
In order to obtain the stability safety factors of soil surrounding unlined circular loess cave under earthquake action,using shear strength reduction method,taking the static and dynamic analysis model,and applying the ANSYS software,the static stability analysis and the earthquake dynamic response analysis about the soil surrounding the unlined circular loess cave were performed.So the shear failure laws of the surrounding soil under earthquake action are obtained.The effects of the cave diameter and coverage soil thickness of cave and seismic intensity on the shear strength safety factor were discussed.The results show that under the gravity and seismic action,the shear strength safety factors of unlined circular caves are generally greater than 1.15 and smaller than 2.00.Therefore the requirements of initial lining can be met,but the requirements of the using phase can not.It is suggested that,in order to ensure the structure safety,the second lining after excavation should be done as soon as possible.

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备注/Memo

备注/Memo:
收稿日期:2010-07-08;修回日期:2011-01-15
基金项目:国家自然科学基金资助项目(50978130)
作者简介:程选生(1972-),男(汉族),甘肃省甘谷县人,兰州理工大学教授、博士.E-mail:cxs702@126.com
更新日期/Last Update: 2011-03-28