地铁下穿干线铁路重大风险源测试研究

发布时间：2018-03-20 08:29

本文选题：穿越施工　切入点：自动化监测　出处：《地下空间与工程学报》2016年05期 　论文类型：期刊论文

【摘要】：随着我国地铁线路的快速发展,不可避免地会遇到穿越繁忙干线铁路重大风险源施工技术难题。目前世界上针对这类问题的研究较少,没有可参考的工程案例。结合北京地铁10号线下穿京沪高速铁路、京九铁路等重大风险源穿越施工,笔者进行了系统的试验测试分析。结果表明:(1)若采取措施得当,完全可以进行穿越重大风险源施工,但应注意进行各重要结构和部件的精确监测,使施工始终处于安全可控状态;并建议采用自动化监测。(2)线路在穿越时会产生较快的沉降,穿越后沉降即趋于稳定;双线穿越时,后穿越线路会影响先穿越线路;当恢复线路后,穿越影响区还会发生一定的缓慢变形。(3)初步提出了一套路基及接触网杆变形控制指标及标准,以供类似工程参考。此外,本案例的成功实施为我国及世界其他国家进行穿越高速铁路等重大风险源施工积累了宝贵的经验。
[Abstract]:With the rapid development of subway in China, will inevitably encounter across the busy railway construction of major risk sources of technical problems. To solve the problem of the research in the world, there is no practical engineering case. Through the high-speed railway in Beijing Metro Line 10, the Beijing Kowloon Railway and other major risk sources through the construction. The author analyzed the testing system. The results showed that: (1) if taken appropriate measures can be used across the major risk sources of construction, but should pay attention to accurately monitoring the important structures and components, the construction is always safe and controllable; and recommended the use of automatic monitoring. (2) the line will produce faster the settlement in the crossing, crossing the settlement is stable; double crossing, after crossing the line will affect the first crossing line; when the recovery line, across the affected area will certainly slow (3) initially put forward a set of roadbed and catenary bar deformation control indicators and standards for similar projects. Besides, the successful implementation of this case has accumulated valuable experience for our country and other countries in the world to carry out major risk sources such as crossing high-speed railway.

【作者单位】：北京交通大学土木建筑工程学院;
【基金】：中央高校基本科研业务费专项资金资助(2011JBM261) 北京市科技新星计划(Z12111000250000)
【分类号】：U231.3;U298

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