|本期目录/Table of Contents|

[1]赵明华,刘峻龙,龙照.锚杆变形分析与临界锚固长度计算[J].建筑科学与工程学报,2008,25(03):17-21.
　ZHAO Ming-hua,LIU Jun-long,LONG Zhao.Deformation Analysis of Bolt and Calculation of Critical Anchorage Length[J].Journal of Architecture and Civil Engineering,2008,25(03):17-21.
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锚杆变形分析与临界锚固长度计算(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
25卷
期数:
2008年03期
页码:
17-21
栏目:
出版日期:
2008-09-20

文章信息/Info

Title:
Deformation Analysis of Bolt and Calculation of Critical Anchorage Length
作者:
赵明华1,刘峻龙2,龙照2
1.湖南大学岩土工程研究所,湖南长沙410082; 2.中国市政工程西北设计研究院有限公司,甘肃兰州730000
Author(s):
ZHAO Ming-hua1, LIU Jun-long2, LONG Zhao2
1. Institute of Geotechnical Engineering, Hunan University, Changsha 410082, Hunan, China; 2. China Northwest Municipal Engineering Design and Research Institute Ltd, Lanzhou 730000, Gansu, China
关键词:
锚杆;  荷载传递;  Winkler地基模型;  位移;  变形;  临界锚固长度
Keywords:
bolt;  load transfer;  Winkler foundation model;  displacement;  deformation;  critical anchorage length
分类号:
TU472
DOI:
-
文献标志码:
A
摘要:
首先引入桩土荷载传递规律的剪切位移模式,结合轴向Winkler地基模型,建立了锚杆荷载传递基本方程,利用单元体平衡和锚杆、土体变形协调及边界条件,推导出锚杆抗拔荷载与位移关系的解析解,从而导出锚杆临界锚固长度的计算公式; 然后,对影响锚杆临界锚固长度的主要因素进行了分析,得出一些定性的结论; 最后,以某高层建筑深基坑支护工程中的锚杆为计算实例进行了分析。结果表明:理论计算结果与实测锚杆荷载变形曲线的直线段吻合较好; 临界锚固长度的计算是合理的,可为锚杆设计提供参考。
Abstract:
Firstly, the mode of shear displacement of pile-soil load transfer regular was introduced, and the basic equation of bolt load transfer was built by combining axial Winkler foundation model. The analytical solution of the relation between load and deformation of bolt and uplift pile was deduced by using the balance of unit body, deformation coordination between anchor and soil and boundary condition, so as to deduce the calculation formulae of bolt critical anchorage length. Then, the major factors influencing the bolt critical anchorage length were analyzed, and some qualitative conclusions were got. Finally, analysis was carried by taking a bolt in deep foundation pit engineering for high-rise building as an example. The results indicate that the theoretical calculation results match well with the actual measurement results of bolt load-deformation curves; the calculation of critical anchorage length is reasonable, and can be used as a reference for design of bolt.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2008-05-11
基金项目:国家自然科学基金项目(50578060)
作者简介:赵明华(1956-),男,湖南邵阳人,教授,博士研究生导师,工学博士,E-mail:mhzhaohd@21cn.com。
更新日期/Last Update: 2008-09-20