摘要
一些隧道的二次衬砌作为重要的结构参与工作,承担荷载。提出了复合衬砌运营期可靠性评价方法,采用不等宽的脉冲随机过程描述钢筋混凝土衬砌的劣化,用施工资料和监测数据+基于连续介质模型的有限元计算+响应面法获得荷载效应的显式,给出了严格意义的可靠性计算公式,并给出算例。
For some tunnels,secondary linings are used to carry loads. In this paper,a method is presented to assess the reliability of composite linings during the service life of tunnels. A pulse process is proposed to describe the degradation of reinforced concrete linings. Based on construction records,in-situ monitoring data and finite element analyses,Response Surface Method is adopted to obtain the explicit expressions of load effects. A strict formulation for reliability analysis is given. Finally,the proposed method is demonstrated with an example.
出处
《工程力学》
EI
CSCD
北大核心
2007年第z1期119-122,共4页
Engineering Mechanics
基金
北京交通大学科学研究基金资助项目(2003SM024)
北京市自然科学基金资助项目(8032011)
关键词
隧道及地下工程
可靠性分析
响应面法
结构劣化
复合衬砌
随机过程
tunnel and underground facilities
reliability analysis
response surface method
structural degradation
composite lining
stochastic processes
