【作者】 谢楠； 王大力； 张弥； 朱尔玉； 王勇；

【Author】 Xie Nan, Wang Dali, Zhang Mi, Zhu Eryu, Wang Yong (School of Civil Engineering & Architecture, Beijing Jiaotong University, Beijing 100044, China)

【机构】 北京交通大学土建学院；

【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。本文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。更多还原

【Abstract】 For some composite tunnel, secondary linings have been used to support load as an important member. In this paper, a method is proposed to assess the reliability of composite tunnel during the service life. A kind of pulse process is proposed to simulate the degradation of resistance. Based on construction record, in-situ monitoring data and finite element analysis, Response Surface method is adopted to gain the explicit expression of load effect. A formulation for reliability analysis is given. Finally, proposed method is demonstrated with a example.更多还原