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[1]胡德华,蒋桃荣,潘登,等.岩石强度特性与嵌岩桩桩端极限阻力[J].武汉工程大学学报,2009,(12):40-43.
　HU De hua,JIANG Tao rong,PAN Deng,et al.Rock strength characteristics and research on rocksocketedpiletip ultimate resistance[J].Journal of Wuhan Institute of Technology,2009,(12):40-43.
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岩石强度特性与嵌岩桩桩端极限阻力(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2009年12期
页码:
40-43
栏目:
资源与土木工程
出版日期:
2009-12-28

文章信息/Info

Title:
Rock strength characteristics and research on rocksocketed
piletip ultimate resistance
文章编号:
16742869(2009)12004004
作者:
胡德华1 ; 蒋桃荣2; 潘登1; 张小敏1
1．武汉工程大学环境与城市建设学院，湖北 武汉 430074;
2．湖北省化学工业研究设计院，湖北 武汉 430074
Author(s):
HU Dehua1; JIANG Taorong2; PAN Deng1; ZHANG Xiaomin1
1．School of Environmental and Civil Engineering， Wuhan Institute of Technology，Wuhan 430074，China；
2．Hubei Institute of Chemical Reseach and Desining， Wuhan 430074，China
关键词:
无侧限抗压强度; 泊松比; 三轴压缩强度; 嵌岩桩; 极限阻力
Keywords:
unconfined compression strength; Poisson’s rate; triaxial compressive strength; rocksocked pile; ultimate resistance
分类号:
TU452;TU473.1+1.2
DOI:
-
文献标志码:
A
摘要:
从岩石的强度特性与本构关系出发，深入分析嵌岩桩桩端岩石应力状态与入岩部分桩侧阻强化现象，并根据三轴强度表达式论述桩端岩石的极限承载力远高于按单轴抗压强度的计算值；现行《建筑桩基技术规范》中嵌岩桩单桩竖向极限承载力标准值仍沿用岩石的单向应力状态的抗压强度—无侧限抗压强度计算，混淆了桩端岩石的实际应力状态；本文依据桩端岩石应力状态分析结论，提出了嵌岩桩极限阻力标准值的计算理念与方法，并结合工程试桩实例予以说明.
Abstract:
From the strength of the rock properties and constitutive relation，the depth analysis was made of rocksocketed piletip of rock stress state and the phenomenon of pile shaft resistance enhanced into the rock part. The authors expound of the rock pilepit ultimate bearing capacity is much higher than the uniaxial compressive strength in accordance with the calculated based on triaxial compressive strength．The current Technical Code for Building Pile Foundation ultimate vertical bearing capacity of a single rocksocketed pile maintain its standard value of the compressive strength of unidirectional stress stateunconfined compression strength， distort the actual stress state of the pilepit rock．In this paper，based on analysis of the conclusions the stress state of the piletip rock，the concepts and methods of calculation on the ultimate resistance characteristic value of rocksocketed piles is put forward，and pile test in combination with examples of project is described．

参考文献/References:

［1］黄醒春．岩石力学［M］．北京：高等教育出版社，2005:2223，3840.
［2］胡德华,宋靖华.端承嵌岩桩桩端阻力研究［J］.武汉工程大学学报，2007(3)：3538.
［3］刘利明．桩基工程的理论进展与工程实践［M］．北京：中国建材工业出版社，2003：6271，214.
［4］王平.丁延法.嵌岩桩单轴抗压强度和三维作用下桩端承载力［J］.山西建筑，2009.35(12):108109.
［5］刘金砺．桩基设计施工与检测［M］．北京：中国建材工业出版社，2001:3745.
［6］JGJ942008 建筑桩基技术规范及条文说明［S］．北京：中国建筑工业出版社，2008:263.
［7］湖北省建筑科学研究设计院，DB42/2422003建筑地基基础技术规范［S］.武汉：湖北省质量技术监督局，2003.

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备注/Memo

备注/Memo:
收稿日期：20090602
作者简介：胡德华（1964），男，湖北黄梅人，高级工程师，研究方向：工程结构设计研究与安全审查.
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