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松软围岩隧道结构稳定可靠性估计
引用本文:苏永华,蒋德松,赵明华.松软围岩隧道结构稳定可靠性估计[J].湖南大学学报(自然科学版),2006,33(2):10-13.
作者姓名:苏永华  蒋德松  赵明华
作者单位:湖南大学,木土工程学院,湖南,长沙,410082
基金项目:国家自然科学基金资助项目(50378036)
摘    要:分析了深部地下工程围岩与结构的相互作用原理,提出了极限状态方程建立准则,然后按照新奥法原理给出最小荷载的估算公式.在分析衬砌力学传递机理基础上揭示了衬砌变形协调的3种基本类型,推导了在不同协调情况下结构实际抗力的计算公式,探讨了极限状态方程的建立方法.根据结构参数和状态函数的复杂性,研究了统计矩方法估算稳定可靠性概率的实用性.由此构成了该类隧道结构稳定可靠性估计的完整方法.并采用该方法分析了某隧道结构的稳定可靠度,验证了其有效性.

关 键 词:松软围岩  隧道  变形协调  统计矩法  可靠性
文章编号:1000-2472(2006)02-0010-04
收稿时间:2005-04-28
修稿时间:2005-04-28

Estimation of the Stability Reliability Degree of Tunnel Structure in Soft and Loose Rock Mass
SU Yong-hu,JIANG De-song,Zhao Ming-hua.Estimation of the Stability Reliability Degree of Tunnel Structure in Soft and Loose Rock Mass[J].Journal of Hunan University(Naturnal Science),2006,33(2):10-13.
Authors:SU Yong-hu  JIANG De-song  Zhao Ming-hua
Institution:College of Civil Engineering, Hunan Univ, Changsha,Hunan 410082, China
Abstract:Firstly,the interaction principle between surrounding rock and supporting structure for deep underground engineering was studied,and a rule of establishing limit state equation was put forward.The estimation formula of the least load was proposed according to NATM.Three basic types of lining deformation harmony were revealed based on analysis about lining mechanics.Then the calculation equation for actual resistance of the anchor-shotcrete net structure under various different deformation harmony and the establishing method of limit state equation were educed,Rosenblueth method was introduced to evaluate the stability reliability degree of the tunnel lining structure.A practicable calculation method of the stability reliability degree of the tunnel structure was established.The above method was adopted to analyze the reliability degree of a tunnel structure and its validity was verified.
Keywords:soft and loose surrounding rock  tunnel  deformation harmony  Rosenblueth methods  reliability  
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