偏压隧道二次衬砌裂缝扩展规律分析  

Analysis of secondary lining crack propagation law of bias tunnel

作　　者：刘苗 李瑶 LIU Miao;LI Yao(Sinopec Xinjiang Synthetic Natural Gas Pipeline Transportation Co.Ltd,Beijing 100020,China)

机构地区：[1]中国石化新疆煤制天然气外输管道有限责任公司,北京100020

出　　处：《南昌工程学院学报》2018年第4期12-15,共4页Journal of Nanchang Institute of Technology

摘　　要：二衬开裂是隧道工程常见病害问题,其中偏压作用产生的二衬开裂问题尤为显著。研究偏压隧道二衬裂缝扩展变化规律对二衬裂缝防治有着重要意义。以谷竹高速公路某隧道拱腰段偏压区域为研究对象,采用数值计算和断裂力学理论相结合的方法,对偏压荷载、不同规模裂缝的扩展规律及特征进行了分析研究,对防治隧道二衬开裂起到指导作用。Secondary lining cracking is a common harmful problem in tunnel project,in which the problem of secondary lining cracking is particularly significant in bias tunnel.It is of great significance to study the law of crack propagation of secondary lining in bias tunnel for the prevention and control of secondary lining cracks.Taking the bias area of the arch and waist section of a tunnel in Gu-Zhu Highway as the researching object,the propagation law and characteristics of secondary lining cracking of bias loads and different scales are analyzed based on the theory of numerical calculation and fracture mechanics.The research is intended to guide the prevention and control of the secondary lining tunnel.

关 键 词：隧道 二衬开裂 扩展规律 数值计算 

分 类 号：U451.4[建筑科学—桥梁与隧道工程]