暗挖隧道施工对平行地下管线性状影响研究

发布时间：2018-01-10 06:33

本文关键词：暗挖隧道施工对平行地下管线性状影响研究　出处：《土木工程学报》2014年S2期 　论文类型：期刊论文

【摘要】：地铁、路桥桩基以及高层建筑深基坑开挖等地下工程项目的施工,对城市既有地下管网的安全运行带来巨大影响。针对地铁暗挖过程中由于土体应力损失造成的既有管线结构性状影响展开研究,采用控制地表沉降的方法,分析暗挖施工掌子面推进过程中平行于区间隧道的地下管线的应力变化,同时考虑施工步序与衬砌、锚杆、注浆等参数变化的影响。通过建立理想暗挖隧道模型,分析地表差异沉降,不仅有利于控制浅埋地下管道的安全性并判断暗挖断面前后沉降曲线的拐点,而且可有效控制暗挖掌子面的推进速度。
[Abstract]:Construction of underground projects such as subway, road and bridge pile foundation and deep foundation pit excavation of high-rise buildings. It has a great influence on the safe operation of the existing underground pipeline network in the city. Aiming at the influence of the existing pipeline structure character caused by the soil stress loss during the underground excavation process, the method of controlling the surface settlement is adopted. This paper analyzes the stress changes of underground pipelines parallel to the interval tunnel during the process of advancing the surface of the excavation face, and considers the construction sequence, lining and anchor rod at the same time. Through the establishment of ideal tunneling model and analysis of surface differential settlement, it is not only helpful to control the safety of shallow underground pipeline and judge the inflexion point of settlement curve before and after excavation. And can effectively control the driving speed of the surface of the excavated palm.
【作者单位】：哈尔滨工业大学;
【基金】：国家自然科学基金(51108135) 哈尔滨工业大学科研创新基金(2012092) 季节性冻土区铁路列车行驶路基震动反应与稳定性研究(51078111)
【分类号】：U455.4
【正文快照】： 引居民生活造成严重影响。研究地铁施工对周围地下管线的影响,并对管线进行合理保护是地铁等地下工程建设建设面临的一项重要课题。城市地下管线包括煤气管、水管、雨水管、污水管、热力管、通信电缆、电力电缆、电车电缆等,其埋设深度一般都在0.5~3.0m范围内。导致管线损坏

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