【作者】 欧尔峰； 康文； 马勤国； 孙纬宇； 严松宏；

【Author】 Ou Erfeng;Kang Wen;Ma Qinguo;Sun Weiyu;Yan Songhong;Key Laboratory of Road & Bridge and Underground Engineering of Gansu Province,Lanzhou Jiaotong University;School of Civil Engineering,Lanzhou Jiaotong University;Gansu road and Bridge Road investment Limited Company;

【机构】 兰州交通大学甘肃省道路桥梁与地下工程重点实验室； 兰州交通大学土木工程学院； 甘肃路桥公路投资有限公司；

【摘要】 隧道衬砌裂损是较为普遍的一种隧道病害,基本反映了隧道运营期间的安全状态,导致隧道衬砌裂损的主要原因之一是衬砌结构本身存在的一些缺陷(如衬砌厚度问题等)。文章针对某新建隧道由于施工造成二次衬砌(260 m段)厚度不足对隧道后期安全性、可靠性和初始健康状态的影响进行了探讨。研究结果表明:该段隧道衬砌虽然能满足结构安全性的要求,但是拱顶、拱腰和墙脚部位不满足可靠度指标要求;该段隧道衬砌60%初始健康状态处于亚健康状态,运营维修养护期间需要加强其检查和治理。更多还原

【Abstract】 The cracking damage of tunnel lining is a common tunnel disease and it basically reflects the state of tunnel safety during operation.One of the main causes of cracking damage of tunnel lining is attributed to the defect of tunnel lining itself such as lining thickness.In this paper,it discussed the influence of insufficient thickness of 260 m long secondary lining section on tunnel safety,reliability and initial health state.The research results show that this section of tunnel lining meets the requirements of structural safety,while the reliability indexes at crown,haunch and wall foot fail meeting relative standards.As for the health state,60 percent of tunnel lining is initially in the sub-healthy state,the inspection and control shall be strengthened during operation and maintenance.更多还原