Please wait a minute...
浙江大学学报(工学版)
浙江大学学报(工学版)
土木工程     
静钻根植竹节桩荷载传递机理模型试验
周佳锦1,2,龚晓南1,2,王奎华1,2,张日红3,严天龙3
1. 浙江大学 滨海与城市岩土工程研究中心,浙江 杭州 310058；2. 浙江大学 软弱土与环境土工教育部重点实验室,浙江 杭州 310058； 3. 浙东建材集团,浙江 宁波 315000
Model test on load transfer mechanism of a static drill rooted nodular pile
ZHOU Jia-jin1,2, GONG Xiao-nan1,2, WANG Kui-hua1,2, ZHANG Ri-hong3 , YAN Tian-long3
1. Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China; 2. MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China; 3. ZDOON Building Materials Group, Ningbo 315000, China
 全文: PDF(1201 KB)  
摘要：

针对静钻根植竹节桩这种新型组合桩基的荷载传递机理的问题,在模型槽中进行竹节桩的模型试验.通过埋设在竹节桩表面与水泥土中的应变片及桩底的土压力传感器对加载过程中桩身、桩端以及水泥土中的应力进行测量.模型试验结果表明：桩侧水泥土与桩端水泥土在荷载传递过程中所起作用不同,靠近桩端水泥土处桩侧水泥土中应力较大,在实际工程中需要提高该区域水泥土强度；模型试验测得的水泥土与桩周土极限侧摩阻力比现场试桩水泥土与桩周土的极限侧摩阻力大,在实际工程中搅拌水泥土时应提高搅拌均匀性以增加桩侧摩阻力；可以用传统桩基沉降计算公式计算静钻根植竹节桩的桩端沉降.
关键词： 竹节桩;  模型试验;  水泥土;  桩端沉降计算;  静钻根植工法;  荷载传递    
Abstract:

For investigating the load transfer mechanism of the nodular pile, a model test of the pile was conducted in the model box. The axial force of the nodular pile and the mobilized base load were measured by the strain gauges attached on the pile shaft and the soil pressure sensors underneath the pile base respectively,while the stress in the cemented soil was measured with the help of the Polyvinylchlorid （PVC） pipe on which the strain gauges were attached. The experimental results show that: the function of the cemented soil along the shaft is different from that of the cemented soil at the enlarged pile base; the stress in the cemented soil along the shaft is enlarged suddenly when approaching the pile base, thus the cemented soil at this area should be strengthened in actual projects; the ultimate skin friction of the model pile is larger than the skin friction in the field test, thus the skin friction should be improved by increasing the homogeneity of the cemented soil in actual projects; the theoretical tip displacement-tip load curves of traditional pile foundation can be applied for the nodular pile．
Key words: model test    pile tip settlement calculation    cemented soil    static drill rooted method    nodular pile    load transfer
出版日期: 2015-04-12
:  TU 47  
基金资助:

国家自然科学基金资助项目（51278450）；国家自然科学基金资助项目（51378464）
通讯作者: 龚晓南，男，教授，博导     E-mail: xngong@hzcnc.com
作者简介: 周佳锦(1989- )，男，博士生，从事桩基工程、地基处理及基坑工程研究.E-mail: zjjmuforever@163.com
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　
龚晓南
王奎华
张日红
严天龙
周佳锦

引用本文:

周佳锦,龚晓南,王奎华,张日红,严天龙. 静钻根植竹节桩荷载传递机理模型试验[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2015.03.019.

ZHOU Jia-jin, GONG Xiao-nan, WANG Kui-hua, ZHANG Ri-hong, YAN Tian-long. Model test on load transfer mechanism of a static drill rooted nodular pile. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2015.03.019.

链接本文:

http://www.zjujournals.com/xueshu/eng/CN/10.3785/j.issn.1008-973X.2015.03.019    或    http://www.zjujournals.com/xueshu/eng/CN/Y2015/V49/I3/531

［1］ HORIGUCHI T, KARKEE M B. Load tests on bored PHC nodular piles in different ground conditions and the bearing capacity based on simple soil parameters ［J］. Proceedings of Technical Report of Japanese Architectural Society, 1995 (1): 89-94．
［2］ KARKEE M B, HORIGUCHI T, KISHIDA H. Limit state formulation for the vertical resistance of bored PHC nodular piles based on field load test results ［C］∥ Eleventh Asian Regional Conference on Soil Mechanics and Geotechnical Engineering. Seoul, Korea：［s.n.］, 1999: 237-240．
［3］ KARKEE M B, KANAI S, HORIGUCHI T. Quality assurance in bored phc nodular piles through control of design capacity based on loading test data ［C］∥ Proceedings of the 7th International Conference and Exhibition, Piling and Deep Foundations. Vienna, Austria： 1998, 1(24):19．
［4］ BORDA O, UNO M, TOWHATA I. Shaft capacity of nodular piles in loose sand［C］∥ Proceedings of the 49th National Conference, Japanese Geotechnical Society. ［S. l.］：［s. n.］,2007(2)：1175-1176．
［5］ HONDA T, HIRAI Y, SATO E. Uplift capacity of belled and multi-belled piles in dense sand ［J］. Soils and Foundations, 2011, 51(3):483-496．
［6］ ZHOU J J, WANG K H, GONG X N, et al. Bearing capacity and load transfer mechanism of a static drill rooted nodular pile in soft soil areas［J］. Journal of Zhejiang University-SCIENCE A :Applied Physics & Engineering, 2013, 14(10):705-719.
［7］ 段继伟, 龚晓南, 曾国熙. 水泥土搅拌桩的荷载传递规律［J］. 岩土工程学报, 1994, 16(4): 18.
DUAN Ji-wei, GONG Xiao-nan, ZENG Guo-xi. Load transfer law of DCM pile ［J］. Chinese Journal of Geotechnical Engineering, 1994, 16(4): 18．
［8］ 刘汉龙, 任连伟, 郑浩, 等. 高喷插芯组合桩荷载传递机制足尺模型试验研究［J］. 岩土力学, 2010, 31(5): 1395-1401.
LIU Han-long, REN Lian-wei, ZHENG Hao, et al. Full-scale model test on load transfer mechanism for jet grouting soil-cement-pile strengthened pile ［J］. Rock and Soil Mechanics, 2010, 31(5): 1395-1401．
［9］ 梁仁旺, 张明, 白晓红. 水泥土的力学性能试验研究［J］. 岩土力学, 2001, 22(2): 211-213.
LIANG Ren-wang, ZHANG Ming, BAI Xiao-hong. Analysis of laboratory test results 0f cemented soil ［J］. Rock and Soil Mechanics, 2001, 22(2): 211-213．
［10］ 李建军, 梁仁旺. 水泥土抗压强度和变形模量试验研究［J］. 岩土力学, 2009, 30(2): 474-477.
LI Jian-jun, LIANG Ren-wang. Research on compression strength and modulus of deformation of cemented soil ［J］. Rock and Soil Mechanics, 2009, 30(2): 474-477．
［11］ 中国建筑科学研究院. JGJ106-2003建筑桩基检测技术规范［S］. 北京: 中国建筑工业出版社, 2003．
［12］ 董金荣, 林胜天, 戴一鸣. 大口径钻孔灌注桩荷载传递性状［J］. 岩土工程学报, 1994, 16(6): 123-131.
DONG Jin-rong, LIN Sheng-tian, DAI Yi-ming. The load transferbehavior of large diameter cast-in-situ pile in crushed pebblestratum ［J］. Chinese Journal of Geotechnical Engineering, 1994, 16(6): 123-131．
［13］ 中国建筑科学研究院. JGJ94-2008 建筑桩基技术规范［S］. 北京: 中国建筑工业出版社, 2008．
［14］ RANDOLPH M F, WROTH C P. Analysis of deformation of vertically loaded pile［J］. Journal of the Geotechnical Engineering Division, 1978, 104(12):1465-1488．
［15］ HAN J, YE S L. A field study on the behavior of micropiles in clay under compression or tension［J］. Canadian Geotechnical Engineering, 2006, 43(1):19-29.
[1] 牛纪强,梁习锋,周丹,刘堂红. 动车组过隧道时设备舱气动效应动模型试验[J]. 浙江大学学报(工学版), 2016, 50(7): 1258-1265.
[2] 胡平川, 周建, 温晓贵, 陈宇翔, 李一雯. 电渗-堆载联合气压劈裂的室内模型试验[J]. 浙江大学学报(工学版), 2015, 49(8): 1434-1440.
[3] 王奎华,李振亚,吕述晖,张鹏,庾焱秋. 静钻根植竹节桩纵向振动特性及应用研究[J]. 浙江大学学报(工学版), 2015, 49(3): 522-530.
[4] 周佳锦,王奎华,龚晓南,张日红,严天龙. 静钻根植抗拔桩承载性能数值模拟[J]. 浙江大学学报(工学版), 2015, 49(11): 2135-2141.
[5] 王驰, 徐永福, 叶冠林. 砼芯水泥土搅拌桩复合地基工作特性分析[J]. 浙江大学学报(工学版), 2014, 48(9): 1610-1617.
[6] 周佳锦,龚晓南,王奎华,张日红. 静钻根植竹节桩抗压承载性能[J]. 浙江大学学报(工学版), 2014, 48(5): 835-842.
[7] 周佳锦,龚晓南,王奎华,张日红,严天龙. 静钻根植竹节桩荷载传递机理模型试验[J]. 浙江大学学报(工学版), 2014, 48(10): 2-3.
[8] 王奎华, 罗永健, 吴文兵, 吕述晖, 武登辉. 层状地基中考虑桩端应力扩散的单桩沉降计算[J]. J4, 2013, 47(3): 472-479.
[9] 钟世英, 吴晓君, 蔡武军, 凌道盛, 蒋祝金, 王顺玉. 月面软着陆足垫水平拖曳模型试验装置研制[J]. J4, 2013, 47(3): 465-471.
[10] 张民锐, 邓华, 刘宏创, 董石麟, 张志宏, 陈玲秋. 月牙形索桁罩棚结构的静力性能模型试验[J]. J4, 2013, 47(2): 367-377.
[11] 王振华, 董石麟, 田伟, 袁行飞. 索穹顶与单层网壳组合结构的模型试验研究[J]. J4, 2010, 44(8): 1608-1614.
[12] 孙红月, 吴红梅, 李焕强, 尚岳全. 松散堆积土中的隔水层对边坡稳定性的影响[J]. J4, 2010, 44(10): 2016-2020.
[13] 陈国兴, 左熹, 王志华, 杜修力, 孙田. 地铁车站结构近远场地震反应特性振动台试验[J]. J4, 2010, 44(10): 1955-1961.
[14] 王军, 郑晓, 蔡袁强, 郭林. 应变控制下水泥土动静力特性试验[J]. J4, 2010, 44(10): 1857-1862.
[15] 鲍侃袁 吴玉华 陈勇 孙炳楠. 新型楼盖体系的足尺模型试验及简化计算方法[J]. J4, 2008, 42(7): 1128-1134.