| 深埋正交隧道零间距施工技术研究 |
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| 引用本文： | 李少刚,刘保国.深埋正交隧道零间距施工技术研究[J].北方交通大学学报,2010(4):36-40. |
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| 作者姓名： | 李少刚 刘保国 |
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| 作者单位： | 北京交通大学土木建筑工程学院,北京100044 |
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| 基金项目： | 基金项目：国家“863”高技术研究发展计划项目资助（2007AA11Z109） |
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| 摘 要： | 以北京地下空间规划书中提出的＂四纵二横＂规划为研究对象,提出了一种近距离正交隧道施工方法：上下层隧道交叉重叠处零间距施工技术方法,并给出了这种工法的详细施作过程.采用数值模拟软件Midas-GTS,建立了该工法和普通近距离正交隧道施工方法的数值模型.通过综合对比分析,该工法在控制地表沉降及支护结构变形方面效果明显,对土体的损伤小,适宜北京及类似地质条件的城市推广使用.
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| 关 键 词： | 正交隧道 零间距 CRD工法 塑性区 |
Study on the Zero Distance Excavation Technology of Deep Buried Perpendicular Tunnel |
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| LI Shaogang,LIU Baoguo.Study on the Zero Distance Excavation Technology of Deep Buried Perpendicular Tunnel[J].Journal of Northern Jiaotong University,2010(4):36-40. |
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| Authors: | LI Shaogang LIU Baoguo |
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| Institution: | (School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China) |
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| Abstract: | In this paper, a new tunnel excavation method, upper and lower perpendicular overlapping tunnel with zero distance, was put forward. With the numerical simulation software Midas-GTS, the numerical model of this method and the general approaching perpendicular tunnel excavation method were established. Compared with the general method, this new method has obvious advantage in the control of surface subsidence and support structure deformation, and with little damage to the surrounding soil. Therefore, this new method is suitable for Beijing and other cities which have the similar geological conditions. |
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| Keywords: | perpendicular tunnel zero distance CRD method （cross diaphragm method） plastic zone |
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