马道岭隧道套拱加固设计及计算分析  

Reinforcement Design and Calculation Analysis of Arch Surround for Madaoling Tunnel

作　　者：李宇翔 田听雨 Li Yuxiang;Tian Tingyu(Liaoning Provincial Transportation Planning and Design Institute Co.,Ltd.,Shenyang 110166,China)

机构地区：[1]辽宁省交通规划设计院有限责任公司,沈阳市110166

出　　处：《北方交通》2024年第2期60-63,67,共5页Northern Communications

摘　　要：以绥珠线马道岭隧道提质升级为背景,通过现场检测获取其主要缺陷信息,采用“裂缝修补+衬砌背后空洞注浆回填+钢拱架套拱”方案对衬砌开裂段进行加固处理。通过Midas有限元计算软件对裂缝产生的机理及套拱施做后的安全性进行计算,结果表明,二衬叠合式套拱方案安全有效。Taking the upgrade of the Madaoling tunnel over the Suizhu line as the background,the main defect information is obtained through the on-site inspection.The cracked section of the lining is reinforced for treatment with a scheme of"crack repair+grouting and backfilling of the cavity behind the lining+arch surround of steel arch frame".The mechanism of crack generation and the safety of the arch surround after construction are calculated by using the Midas finite element calculation software.The results show that the scheme for the double lining composite arch surround is safe and effective.

关 键 词：马道岭隧道 套拱加固 衬砌开裂 安全系数 

分 类 号：U457.3[建筑科学—桥梁与隧道工程]