地铁隧道暗挖施工引起刚性接口管线变形的理论分析

发布时间：2018-01-04 20:18

本文关键词：地铁隧道暗挖施工引起刚性接口管线变形的理论分析　出处：《防灾减灾工程学报》2017年02期 　论文类型：期刊论文

【摘要】：地铁施工造成邻近管线危害及其保护是一个重要问题。研究地铁隧道暗挖施工引起管线变形有助于在保证地铁暗挖施工的同时,确保管线的变形满足管线的正常使用,为地铁隧道的安全高效施工提供技术支撑。基于Winkler弹性地基梁理论模型,分别推导出与隧道轴线平行和垂直情况下的刚性接口地下管线由于隧道暗挖施工引起的变形计算公式,结果表明:隧道直径、管隧距离、沉降槽宽度系数、管径、管壁厚、管材弹性模量、下卧岩土体弹性模量、特征系数、泊松比、地层损失率等参数是管线变形的主要影响因素。以西安地铁三号线通—胡区间施工工程为例,制定了管线变形监测方案,工程实践表明理论预测公式计算结果与实际相符。
[Abstract]:It is an important problem to study the pipeline deformation caused by underground tunneling construction, which is helpful to ensure the subway underground excavation construction at the same time. Ensure that the deformation of the pipeline meets the normal use of the pipeline, and provide technical support for the safe and efficient construction of the subway tunnel. Based on the Winkler elastic foundation beam theory model. The formulas for calculating the deformation of the rigid interface underground pipeline parallel to and vertical to the tunnel axis are derived respectively. The results show that the diameter of the tunnel, the distance between the tunnel and the tunnel, and the coefficient of the width of the settlement slot are obtained. Diameter, thickness of pipe wall, elastic modulus of pipe material, elastic modulus of underlying rock and soil, characteristic coefficient, Poisson's ratio. The parameters such as formation loss rate are the main influencing factors of pipeline deformation. Taking the construction project of Tonghu section of Xi'an Metro Line No. 3 as an example, the monitoring scheme of pipeline deformation is established. The engineering practice shows that the calculation results of the theoretical prediction formula are in agreement with the actual results.
【作者单位】：西安科技大学建筑与土木工程学院;
【基金】：国家自然科学基金项目(41572287)资助
【分类号】：U231.3;U455
【正文快照】： 引言地下管线作为城市存在的一个重要组成部分,管线的安全运营对城市居民的生活与生产具有重要意义。城市地铁作为城市交通系统中的一个重要组成部分,具有缓解城市交通、为人们出行提供便利等优点,因此很多大中城市都在大力推进城市地铁的建设,而在城市地铁的修建过程中不可避

【相似文献】