地铁隧道纵向衬砌裂缝产生原因分析  

ANALYSIS OF LONGITUDINAL LINING CRACKS OF SUBWAY TUNNEL

作　　者：郭伟 徐晓庆 GUO Wei;XU Xiaoqing(Qingdao Metro Group Co.,Ltd.,Operating Branch,Shandong Qingdao 266000,China)

机构地区：[1]青岛地铁集团有限公司运营分公司,山东青岛266000

出　　处：《低温建筑技术》2020年第12期142-144,共3页Low Temperature Architecture Technology

摘　　要：以青岛某隧道区间为依托,基于该隧道部分区间段衬砌结构出现多道纵状裂缝的现状进行深入研究。结合现场的调研情况,采用实验分析与数值模拟的方式研究了该隧道产生纵向裂缝的主要原因。结果证明施工工艺、超欠挖、外力作用均会对隧道裂缝产生造成不利影响,根据裂缝破坏状况制定修补措施,可为同类工程提供参考。Taking a tunnel section in Qingdao as an example,this paper makes an in-depth study based on the present situation of multiple longitudinal cracks in the lining structure of some sections of the tunnel.Combined with the field investigation,the main causes of longitudinal cracks in the tunnel are studied by means of experimental analysis and numerical simulation.The results show that the construction technology,over excavation and under excavation,and external force will have adverse effects on tunnel cracks problem.Furthermore,according to the damage situation of cracks,the repair measures can be formulated,which can provide reference for similar projects.

关 键 词：隧道衬砌 纵向裂缝 收缩应力 

分 类 号：TU94[建筑科学—建筑技术科学]