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| 深基坑预应力锚杆锚固段应力分布规律与应用 | |
| 引用本文： | 郑卫锋,邵龙潭,贾金青.深基坑预应力锚杆锚固段应力分布规律与应用[J].辽宁工程技术大学学报(自然科学版),2008,27(6). |
| 作者姓名： | 郑卫锋 邵龙潭 贾金青 |
| 作者单位： | 1. 中国电力科学研究院,工程力学研究所,北京,100055;大连理工大学,工业装备结构分析国家重点实验室,辽宁,大连,116024 2. 大连理工大学,工业装备结构分析国家重点实验室,辽宁,大连,116024 3. 大连理工大学,土木水利学院,辽宁,大连,116024 |
| 基金项目： | 建设部2005年科学技术研究开发项目 ， 大连市建委科技计划基金资助项目 |
| 摘 要： | 基于凯尔文问题的位移解,推导了用于深基坑支护中的预应力锚杆锚固段剪应力与轴力的分布规律.对岩体与土体两种不同介质条件下预应力锚杆的受力分析表明,不同岩土体介质条件下,预应力锚杆破坏方式不同,要以最薄弱环节作为锚杆设计控制标准;锚杆剪应力沿锚固段呈对数螺旋曲线型分布,最大剪应力往往发生靠近锚固段初始位置处;锚杆轴力沿锚固段逐渐衰减,单纯通过提高锚固段长度来增加锚杆的极限拉拔力有一定的限度.通过对一工程实例的理论与试验对比分析,其弹性范围内的理论解与试验数据基本相吻合,从而为预应力锚杆的设计提供了理论依据. |
| 关 键 词： | 深基坑 预应力锚杆 剪应力 轴力 拉拔试验 |
Application of stress distribution to bonded section in priestesses anchor for deep foundation pit |
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| ZHENG Weifeng,SHAO Longtan,JIA Jinqing.Application of stress distribution to bonded section in priestesses anchor for deep foundation pit[J].Journal of Liaoning Technical University (Natural Science Edition),2008,27(6). | |
| Authors: | ZHENG Weifeng SHAO Longtan JIA Jinqing |
| Institution: | ZHENG Weifeng SHAO Longtan JIA Jinqing(1.Engineering Mechanics Research Department,China Electric Power Research Institute,Beijing 100055,China,2.State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116024,3.School of Civil , Hydraulic Engineering,China) |
| Abstract: | Based on the Kelvin displacement solution,the distribution of shearing stress and axial force along the anchored length to prestressed anchor in deep foundation pit is obtained.The deformation failure mechanical style of prestressed anchor to rock medium and earth medium is different.As the design controls specifications,the weakest link to presstressed anchor is very important in different medium.The distribution expression of shearing stress is a logarithmic spiral curve along anchored length to prestress... |
| Keywords: | deep foundation pit prestressed anchor shearing stress axial force pullout test |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |