城市地下公路隧道浅埋暗挖施工方法优化及应用研究

发布时间：2018-07-05 18:50

本文选题：城市地下公路隧道 + 浅埋暗挖　；参考：《现代隧道技术》2017年05期

【摘要】：文章以某城市地下公路浅埋暗挖隧道为研究对象,采用有限元方法对CRD法及中隔壁台阶法进行三维动态开挖数值模拟,对比分析两种工法隧道围岩与支护结构变形及受力特征,依据数值计算结果对中隔壁台阶法进行优化,结合现场应用情况及监测数据反馈信息,比较两种工法在施工安全、质量、进度及造价方面的优劣势。研究及工程实践表明:两种工法均满足围岩及支护结构稳定性的要求,中隔壁台阶法在施工进度及造价方面明显优于CRD法,实际应用中取得了较好的工程效益,能够对类似工程的建设提供借鉴与指导。
[Abstract]:This paper takes shallow underground tunnel of a city underground highway as the research object, uses finite element method to carry on the three-dimensional dynamic excavation numerical simulation to CRD method and the middle adjoining step method, and compares and analyzes the deformation and force characteristics of surrounding rock and supporting structure of two kinds of engineering methods. According to the results of numerical calculation, this paper optimizes the method of middle and next step, and compares the advantages and disadvantages of the two methods in construction safety, quality, schedule and cost, combined with the field application and monitoring data feedback information. The research and engineering practice show that the two methods meet the requirements of the stability of surrounding rock and supporting structure, the construction schedule and cost of the next step method are obviously better than that of the CRD method, and good engineering benefits have been obtained in practical application. It can provide reference and guidance for the construction of similar projects.
【作者单位】：中南大学土木工程学院;
【基金】：中铁隧道集团科技创新计划项目(隧研合2013-30);中铁隧道集团科技创新计划(隧研合2016-14) 浙江省交通运输厅科研计划项目(2017041);浙江省交通运输厅科研计划项目(2013H04)
【分类号】：U455.4

【相似文献】