[1]郭院成,张景伟,周同和.竖向与水平复合荷载作用下后注浆灌注桩承载性能试验研究[J].世界地震工程,2013,(04):038-45.
 GUO Yuancheng,ZHANG Jingwei,ZHOU Tonghe.Experimental study on bearing capacity of post-grouting bored piles under vertical and lateral composed load[J].,2013,(04):038-45.
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竖向与水平复合荷载作用下后注浆灌注桩承载性能试验研究
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《世界地震工程》[ISSN:/CN:]

卷:
期数:
2013年04期
页码:
038-45
栏目:
出版日期:
2013-12-30

文章信息/Info

Title:
Experimental study on bearing capacity of post-grouting bored piles under vertical and lateral composed load
作者:
郭院成1 张景伟1 周同和2
1. 郑州大学 土木工程学院, 河南 郑州 450001;
2. 郑州大学 综合设计研究院, 河南 郑州 450002
Author(s):
GUO Yuancheng1 ZHANG Jingwei1 ZHOU Tonghe2
1. School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China;
2. Zhengzhou University Multi-functional Design and Research Academy, Zhengzhou 450002, China
关键词:
地基基础工程后注浆灌注桩竖向与水平复合荷载承载性状试验研究
Keywords:
ground foundation engineeringpost-grouting bored pilevertical and llateral composed loadbearing capacity performanceexperimental study
分类号:
U442.5+5
摘要:
基于自主发明的基桩双向复合试验加载装置,通过足尺现场试验,研究了竖向与水平复合荷载作用下后注浆灌注桩的承载性能。结果表明:后注浆灌注桩在桩顶施加竖向荷载时,水平临界荷载Hcr和水平极限荷载Hu都有一定的提高,且最大水平承载力优于同条件下未注浆灌注桩;水平荷载施加到破坏荷载值时,基桩的沉降增量与桩顶竖向荷载大小有直接关系,当竖向承载接近极限荷载时,复式后注浆灌注桩及未注浆灌注桩沉降量均增加较大,但未注浆灌注桩反应更加敏感,竖向位移变化量较复式注浆桩更大。
Abstract:
Baed on independent invention-bidirectional compsed loading device of foundation piles,the bearing capacity of post-grouting bored piles under vertical and horizontal composite load was studied by site full-scale test.The results show that lateral critical load Hcr and lateral ultimate load Hu are increased when vertical load is applied on pile top. The maximum lateral bearing capacity under grouting is better than the one without grouting.Settlement increment is related directly to vertical load on pile top when lateral load reaches failure load. Settlements of both composed post-grouting pile and non-grouting increae obviously when rertical bearing capacity is close to ultimate bearing.But the response of the non-grouting piles is more sensitive and their vertical changes of displacement are more larger compared with that of composed post-grouting pile.

参考文献/References:

[1] 张忠苗, 张乾青.后注浆抗压桩受力性状的试验研究[J].岩石力学与工程学报, 2009, 28(3):475-482. ZHANG Zhongmiao, ZHANG Qianqing. Experimental Study on Mechanical Properties of Post-grouting Compressive Pile[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(3):475-482.
[2] 徐寒, 钟冬波, 邹东峰.国家体育场桩基水平承载性状的试验研究[J].地基基础工程检测与监测, 2009, 28(8):8-13. XU Han, ZHONG Dongbo, ZHOU Dongfeng. Research on Horizontal Bearing Character of NationalStadium Piles[J]. Foundation Engineering Testing and Monitoring, 2009, 28(8):8-13.
[3] 杨秋玲.后注浆技术对钻孔灌注桩承载力的影响与研究[D].长沙:山东建筑大学, 2012. YANG Qiuling. Post Grouting Technique for the Bearing Capacity of Bored Pile Influence and Research[D].Changsha: Shangdong Jianzhu University, 2012.
[4] 何剑.后注浆钻孔灌注桩承载性状试验研究[J].岩土工程学报, 2002, 24(6):743-746. HE Jian. Experimental Research on Vertical Bearing Properties of Base-grouting Bored Cast-in-place Pile[J]. Chinese Journal of Geotechnical Engineering, 2002, 24(6):743-746.
[5] 皇甫明, 王幼青, 张军.纵横向荷载作用下桩的工作性状研究[J].哈尔滨工业大学学报, 2003, 35(6):743-746. HUANG Fuming, WANG Youqing, ZHANG Jun. Behavior of Pile under Combined Axial and LateralLoading[J]. Journal of Harbin Institute of Technology, 2003, 35(6):743-746.

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备注/Memo

备注/Memo:
收稿日期:2013-4-16;改回日期:2013-6-27。
基金项目:国家自然科学基金项目(50978235)资助
作者简介:郭院成(1965-),男,教授,博士生导师,主要从事地基处理与基坑支护工程的理论和应用研究.E-mail:guoyuancheng@163.com
更新日期/Last Update: 1900-01-01