| 可回收锚索锚固段应力分布及锚固长度研究 |
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| 引用本文： | 李兆平,李文涛,王建.可回收锚索锚固段应力分布及锚固长度研究[J].北方交通大学学报,2011(4):57-61. |
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| 作者姓名： | 李兆平 李文涛 王建 |
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| 作者单位： | [1]北京交通大学土木建筑丁程学院,北京100044 [2]中铁二局深圳地铁3154项目部,深圳518000 |
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| 摘 要： | 以深圳地铁3号线停车场基坑工程为背景，根据可回收锚索锚固段受力状态，讨论锚索的锚固段黏结应力分布规律．研究表明，可回收锚索的黏结应力沿锚固段并非均匀分布，而是呈指数曲线形式分布，在此基础上提出基于锚固段黏结应力实际分布状态进行锚固段长度设计的方法，并应用到锚索支护参数设计中．工程实践表明，所提出的锚索锚固段长度设计方法是合理可行的．
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| 关 键 词： | 深基坑支护结构 可回收锚索 锚固段黏结应力 有效锚固长度 |
Study on stress distribution and the bonding length for bonding segment of recoverable anchor cable |
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| LI Zhaoping,LI Wentao,WANG Jian.Study on stress distribution and the bonding length for bonding segment of recoverable anchor cable[J].Journal of Northern Jiaotong University,2011(4):57-61. |
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| Authors: | LI Zhaoping LI Wentao WANG Jian |
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| Institution: | (l. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China; 2. Shenzhen Metro 3154 Project Department, China Railway 2th Bureau Group Co. , Ltd, Shenzhen 518000, China) |
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| Abstract: | In this paper,the deep foundation pit of parking lot in shenzhen metro line 3 is regarded as research background, and based on the mechanical conditions of the revovemble anchor cable anchorage segment, the distribution regularity of interfadal stress for bonding segment is discussed in detail. The result indicated that the distribution of interracial stress is not uniform but an exponential distribution. Based on the interfadal stress distribution regularity, a new design method called effective bonding length method is put forward, which can consider the practical distribution of interfadal stress. The new design method is ttsed to calculate the anchor cable parameters in the practical engineering. The mnstruction result indicated that the new design method for recoverable anchor cable is reasonable and reliable. |
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| Keywords: | supporting structure for deep foundation pit recoverable anchor cable interracial stress forbonding segment the effective bonding length |
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