通透肋式连拱隧道结构分析与工程应用  

Structural Analysis and Engineering Application of Permeable Ribbed Multi-arch Tunnel

作　　者：尤吉 余飞[2] YOU Ji;YU Fei(Anhui Transportation Holding Group Co.,Ltd.,Hefei 230088,Anhui,P.R.China;Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,Hubei,P.R.China)

机构地区：[1]安徽交通控股集团有限公司,安徽合肥230088 [2]中国科学院武汉岩土力学研究所,湖北武汉430071

出　　处：《重庆交通大学学报（自然科学版）》2019年第11期46-51,共6页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：交通运输部建设科技基金项目(2014318J14250);安徽省交通运输厅科技进步计划项目(201204)

摘　　要：以济广高速南山隧道为工程背景,提出了一种通透肋式连拱环保型傍山隧道结构。通过有限元数值俠拟方法对该隧道结构在不同开挖工况的变形受力特征及结构稳定性进行了分析,提出了“先暗后明”的修建方案。研究结果表明:该隧道结构采用连拱肋式衬砌形成封闭的承载圈,且刚度较大的整体式中隔墙提供了拱顶岩体支撑力,结构受力体系完整,设计方案可行。南山隧道的实际应用验证了“先暗后明”修建方案的可行性,其成功建设为环保型傍山隧道结构选型提供了新的思路,同时改善了傍山道路选线设计的受限性。Taking the Nanshan Tunnel of Ji Guang expressway as the engineering background,an environment friendly mountain side multi arch tunnel structure with permeable ribs was proposed.The deformation,stress characteristics and structure stability of the proposed tunnel structure under different excavation conditions were analyzed by finite element numerical simulation method,and the construction scheme of "first dark then bright" was put forward.Research result shows that the proposed tunnel structure adopts multi arch rib lining to form a closed bearing ring,and the integral middle partition wall with larger stiffness provides the support force of the vault rock mass,and the structure stress system is complete,so the design scheme is feasible.The practical application of Nanshan Tunnel verifies the feasibility of the construction scheme of "first dark then bright". Its successful construction provides a new idea for the structure selection of environment friendly mountain side tunnel,and improves the constraints of the design of mountain side road route selection.

关 键 词：隧道工程 环保型傍山隧道 通透肋式连拱结构 结构分析与工程应用 

分 类 号：U45[建筑科学—桥梁与隧道工程]