叠交隧道设计参数对既有隧道稳定性影响的动态模拟研究  

Dynamic Simulation of the Effects of Design Parameters of Overlapped Tunnels on the Stability of Existing Tunnels

作　　者：王辉[1] 赵文娟[2] 

机构地区：[1]山东科技大学资源与土木工程系,泰安271019 [2]泰山职业技术学院建筑工程系,泰安271000

出　　处：《现代隧道技术》2017年第1期116-122,152,共8页Modern Tunnelling Technology

基　　金：国家自然科学基金资助项目(51409154);山东科技大学杰出青年科技人才支持计划项目(2015JQJH106);山东省高等学校科技计划项目(J16LG03);泰安市科技发展计划项目(201630576)

摘　　要：在既有隧道下方新修隧道,其间距及交叉角度是影响工程稳定性的重要设计参数。为研究不同间距及交叉角度对既有隧道的影响,文章基于ABAQus平台,利用Python语言编程建立能够模拟间距及交叉角度动态变化的参数化模型,分析不同间距及交叉角度对既有隧道关键点变形的影响规律;基于Matlab语言编制有限元优化分析计算程序。以既有隧道关键点变形最小作为优化目标,对建立的动态模型进行计算,提出了适合于依托工程建设的间距及交叉角度的最优组合;将优化计算结果与工程现场监测数据进行对比。验证了文章计算结果的有效性和计算方法的优越性。其研究成果丰富了叠交隧道施工影响的仿真计算方法,对类似工程的设计和施工具有一定的指导意义。Regarding construction of a new tunnel underneath an existing one, reasonable spacing and crossing an- gle are the important design parameters that affect stability. To study the influence of different spacings and crossing angles on an existing tunnel, a parametric model was set up that simulates the dynamic changes of spacing and cross- ing angle based on the ABAQUS platform and programming with Python language, and the influence of different spacings and crossing angles on deformations at key points of the existing tunnel were analyzed. A finite element op- timization analysis and calculaton program was compiled based on Matlab language, and a calculation for a dynamic model was conducted by taking the minimization of deformation at key points of the existing tunnel as the optimiza- tion goal, then an optimal combination of spacing and crossing angle suitable for the tunnel was put forward. Through a comparison between optimization calculation results and field monitoring data, the validity of the calcula- tion results was verified. This research enriches the simulation calculation method for studying the influence of over- lapped tunnel construction.

关 键 词：交叉隧道 参数化建模 合理间距 交叉角度 

分 类 号：U452.2[建筑科学—桥梁与隧道工程]