浅层土体加固对倾斜桩竖向承载力影响研究

录井工程

2013, Vol. 47

Issue (6): 697-706

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浅层土体加固对倾斜桩竖向承载力影响研究

胡文红^{1, 2}, 郑刚^{1, 2}

1. 滨海土木工程结构与安全教育部重点实验室（天津大学），天津 300072; 2. 天津大学建筑工程学院，天津 300072

Influence of shallow soil improvement on vertical bearing capacity of inclined piles

HU Wen-hong^{1, 2}, ZHENG Gang^{1, 2}

1. Key Laboratory of Coast Civil Structure Safety (Tianjin University), Ministry of Education, Tianjin 300072, China; 2. School of Civil Engineering, Tianjin University, Tianjin 300072, China

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摘要桩身倾斜可能导致在小于对应于相同条件下竖直桩的极限承载力的荷载下提前发生弯曲破坏，并可在弯曲破坏前产生较大的桩顶水平位移和桩身挠曲。根据某工程现场载荷试验结果，对倾斜桩桩周土体进行浅层加固数值模拟，以研究其改善倾斜桩竖向承载性状的机理。分析结果表明：加固体深度、加固体面积及加固体尺寸均可对加固效果产生影响。加固体对竖向荷载作用下倾斜桩的承载性状的改善体现在对被动区土体强度和压缩性的改善以及约束桩身上部桩体转动和挠曲的作用。进一步研究了加固体压缩性的影响，结果表明：加固体弹性模量越大，加固效果越明显；但随着弹性模量的增大至一定值后，加固效果基本不再变化。

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	胡文红
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关键词 ：竖直桩, 倾斜桩, 土加固, 沉降, 竖向承载力

收稿日期: 2012-07-09

ZTFLH:

TU473

作者简介: 作者简介：胡文红(1984-2012 )，女，博士研究生，从事土力学及岩土工程科研工作。

引用本文:

胡文红, 郑刚. 浅层土体加固对倾斜桩竖向承载力影响研究[J]. 录井工程, 2013, 47(6): 697-706.
HU Wen-hong, ZHENG Gang. Influence of shallow soil improvement on vertical bearing capacity of inclined piles. ljgc, 2013, 47(6): 697-706.

链接本文:

http://192.168.0.151:8080/Jwk_cyfdj/CN/ 或 http://192.168.0.151:8080/Jwk_cyfdj/CN/Y2013/V47/I6/697

[1] JGJ 94—2008 建筑桩基技术规范[S]. 北京: 中国建筑工业出版社, 2008. JGJ 94—2008 Technical code for building pile foundations[S]. Beijing: China Architecture & Building Press, 2008.(in Chinese)
[2] 陈剑,李敏,杨蒙龙. 预应力混凝土管桩偏位和倾斜的分析与处理[J]. 山西建筑,2008, 3431:122-123. CHEN Jian, LI Min, YANG Meng-long.
Analysis and treatment of deviated and inclined PC pile[J]. Shanxi Architecture, 2008, 3431: 122-123. (in Chinese)
[3] 韩爱民,肖军华. 基坑开挖引起工程桩偏斜后的补强设计与施工监控[J]. 建筑技术,2006, 3712:913-915. HAN Ai-min, XIAO Jun-hua.
Reinforcement design and construction monitoring of deflected piles caused by pit excavation[J]. Architecture Technology, 2006, 3712: 913-915. (in Chinese)
[4] 蔡明兴. 倾斜预制方桩的承载力分析及处理[J]. 施工技术,2004, 339:35-37. CAI Ming-xing.
Analysis and treatment of the bearing capacity of inclined prefabricated square piles[J]. Construction Technology, 2004, 339: 35-37. (in Chinese)
[5] 赵宏华,韩选江. 某大厦裙楼桩基质量事故加固处理方案[J]. 南京建筑工程学院学报,2002, 601:74-78. ZHAO Hong-hua, HAN Xuan-jiang.
The strengthening method of a mansion's skirt-building pile foundation quality accident[J]. Journal of Nanjing Architectural and Civil Engineering Institute, 2002, 601: 74-78. (in Chinese)
[6] 任建国. 管桩施工质量事故的处理研究[J]. 中国高新技术企业,200915:163-164. REN Jian-guo.
Research on the handling of piles construction quality incident[J]. Chinese Hi-tech Enterprises, 200915: 163-164. (in Chinese)
[7] 朱进军,韩选江,朱连勇. 软土场地预应力管桩倾斜事故分析与处理[J]. 建筑技术,2007, 389:658-660. ZHU Jin-jun, HAN Xuan-jiang, ZHU Lian-yong.
Analysis and treatment of tilted PHC pile accident in soft ground[J]. Architecture Technology, 2007, 389: 658-660. (in Chinese)
[8] 郑刚,王丽. 竖向荷载作用下倾斜桩的荷载传递性状及承载力研究[J]. 岩土工程学报,2008, 303:323-330. ZHENG Gang, WANG Li. Load transfer and bearing capacity of inclined pile under vertical load[J]. Chinese Journal of Geotechnical Engineering, 2008, 303
[9] JGJ 79—2002 建筑地基处理技术规范[S]. 北京: 中国建筑工业出版社, 2002. JGJ 79—2002 Technical code for ground treatment of buildings[S]. Beijing: China Architecture & Building Press, 2002.(in Chinese)
[10] 郑刚,焦莹. 深基坑工程设计理论及工程应用[M]. 北京: 中国建筑工业出版社, 2010.ZHENG Gang, JIAO Ying. Design theory and practical applications in the deep excavation[M]. Beijing
[11] 蒋建平,李晓昭,罗国煜. 南京地铁地基土标贯与物理及力学参数关系试验研究[J]. 铁道学报,2010, 321:123-127. JIANG Jian-ping, LI Xiao-zhao, LUO Guo-yu.
Experimental study on correlativity between SPT and physical and mechanical parameters of foundation soil of Nanjing subway[J]. Journal of the China Railway Society, 2010, 321: 123-127. (in Chinese)
[12] HANNA A, NGUYEN T Q. Shaft resistance of single vertical and batter piles driven in sand[J]. Journal of Geotechnical and Geoenvironmental Engineering,2003, 1297:601-607.
[13] 王新泉,陈永辉,安永福,等. 塑料套管现浇混凝土桩倾斜对承载性能影响的模型试验研究[J]. 岩石力学与工程学报,2011, 304:834-842. WANG Xin-quan, CHEN Yong-hui, AN Yong-fu, et al. Model test study of effect of inclination on bearing behaviors of plastic tube cast-in- place concrete pile[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 304
[14] L Fan-ren, Y Ji-ming, J Yao-hua. Study on load- displacement of batter pile under vertical load by model experiments[C]//Proceedings of International Conference on Electric Technology and Civil Engineering, Lusan, 2011: 3506-3509.Study on load- displacement of batter pile under vertical load by model experiments[C]//Proceedings of International Conference on Electric Technology and Civil Engineering, Lusan, 2011: 3506-3509.
[15] 郑刚,李帅,杜一鸣,等. 竖向荷载作用下倾斜桩的承载力特性[J]. 天津大学学报自然科学版,2012, 457:567-576. ZHENG Gang, LI Shuai, DU Yi-ming, et al. Bearing capacity behaviors of inclined pile under vertical load[J]. Journal of Tianjin University, 2012, 457
[16] 郑刚,李志伟,刘畅. 型钢水泥土组合梁抗弯性能试验研究[J]. 岩土工程学报,2011, 333:332-340. ZHENG Gang, LI Zhi-wei, LIU Chang. Experimental study on flexural behavior of shaped steel reinforcedcement-soil composite beams[J]. Chinese Journal of Geotechnical Engineering, 2011, 333
[17] LEUNG C F, CHOW Y K, SHEN R F. Behavior of pile subject to excavation-induced soil movement[J]. Journal of Geotechnical and Geoenvironmental Engineering,2000, 12611:947-954.
[18] GB 50021—2001 岩土工程勘察规范[S]. 北京: 中国建筑工业出版社, 2009. GB 50021—2001 Code for investigation of geotechnical engineering[S]. Beijing: China Architecture & Building Press, 2009.(in Chinese)
[19] GB 50010—2010混凝土结构设计规范[S]. 北京：中国建筑工业出版社, 2010. GB 50010—2010 Code for design of concrete structures[S]. Beijing: China Architecture & Building Press, 2010.(in Chinese)
[20] 郭婷婷,张伯平,吴江. 二灰土工程特性的试验研究[J]. 西北水资源与水工程,2003, 142:21-23. GUO Ting-ting, ZHANG Bo-ping, WU Jiang. Experimental study on engineering characteristic of lime-flyash soil[J]. Northwest Water Resources & Water Engineering, 2003, 142