JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2016, Vol. 46 ›› Issue (5): 88-94.doi: 10.6040/j.issn.1672-3961.0.2016.153

Previous Articles     Next Articles

Influence of squeezed branch pile bearing capacity on different numbers and positions of enlarged parts

LI Lianxiang1,2, LI Xianjun1,2   

  1. 1. School of Civil Engineering, Shandong University, Jinan 250061, Shandong, China;
    2. Engineering Research Center of Foundation Pit and Deep Foundation, Shandong University, Jinan 250061, Shandong, China
  • Received:2016-05-10 Online:2016-10-20 Published:2016-05-10

Abstract: The squeezed branch pile behavior and its internal working mechanism had been deeply investigated by simulating the field test and designing34 comparison models. According to vertical comparison on piles with the same number of enlarged parts, conclusions had been made that skin friction played a main role in the former stage but enlarged part resistance played later. A deeper enlarged part position could lead to a higher later-stage bearing capacity and a slower settlement curve. While lateral comparison on piles with different enlarged part number showed bearing capacity improving efficiency rule and enlarged part resistance efficiency rule: too many enlarged parts could reduce the bearing capacity improving efficiency and affect the performance of the enlarged parts. To achieve the best in economy, the suggested optimal number of enlarged parts was 2-3, which could provide reference for engineering.

Key words: enlarged part number, enlarged part resistance, ABAQUS, net growth rate of bearing capacity, enlarged part, enlarged part position

CLC Number: 

  • TU473
[1] 陈轮,常冬冬,李广信. DX单桩承载力有限元分析[J]. 工程力学,2002,19(6):67-72. CHEN Lun, CHANG Dongdong, LI Guangxin. Finite element analysis of bearing capacity of a single DX pile[J]. Engineering Mechanics, 2002, 19(6):67-72.
[2] 陈立宏,唐松涛,贺德新. DX群桩现场试验研究[J]. 岩土力学,2011,32(4):1003-1007. CHEN Lihong, TANG Songtao, HE Dexin. Field test study of DX piles[J]. Rock and Soil Mechanics, 2011, 32(4):1003-1007.
[3] 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.
[4] 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.
[5] ZHOU J J, WANG K H, GONG X N, et al. Bearing capacity and load transfer mechanism of a static drilled rooted nodular pile in soft soil area[J]. Journal of Zhejiang University-SCIENCE A(Applied Physics & Engineering), 2013, 14(10):705-719.
[6] 钱德玲. 挤扩支盘桩的荷载传递规律及FEM模拟研究[J]. 岩土工程学报,2002, 24(3):371-375. QIAN Deling. Study on load transfer law and FEM simulation of squeezed branch pile[J]. Chinese Journal of Geotechnical Engineering, 2002, 24(3):371-375.
[7] 钱德玲. 挤扩支盘桩受力性状研究[J]. 岩石力学与工程学报, 2003, 22(3):494-499. QIAN Deling. Study on behavior of squeezed branch pile[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 22(3):494-499.
[8] 卢成原,王珊珊,孟凡丽. 非饱和粉土中模型支盘桩在重复荷载作用下的试验研究[J]. 岩土工程学报, 2007, 29(4):603-607. LU Chengyuan, WANG Shanshan, MENG Fanli. Model tests on piles with branches and plates in unsaturated silt under cyclic loads[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(4):603-607.
[9] 卢成原,贾颖栋,周玲. 重复荷载下模型支盘桩工程性状的试验研究[J]. 岩土力学, 2008, 29(2):431-436. LU Chengyuan, JIA Yingdong, ZHOU Ling. Project performance study of model piles with branches and plates under repeated load in silty clay[J]. Rock and Soil Mechanics, 2008, 29(2):431-436.
[10] 吴永红,郑刚,闫澍旺. 多支盘钻孔灌注桩基础沉降计算理论与方法[J]. 岩土工程学报, 2000, 22(5):528-531. WU Yonghong, ZHENG Gang, YAN Shuwang. A settlement prediction method for multi-under-reamed cast-in-situ pile foundation[J]. Chinese Journal of Geotechnical Engineering, 2000, 22(5):528-531.
[11] 张延庆,苑辉,屈展,等. 挤扩支盘桩抗拔性能试验研究[J]. 工程力学, 2008, 25(增刊1):82-85. ZHANG Yanqing, YUAN Hui, QU Zhan, et al. Experimental study on the anti-pulling behavior of the squeezed cast-in-place pile[J]. Engineering Mechanics, 2008, 25(sup.1):82-85.
[12] 高笑娟,刘丰军,李跃辉,等. 挤扩支盘桩水平承载力计算和影响因素分析[J]. 工程力学, 2009, 26(7):97-104. GAO Xiaojuan, LIU Fengjun, LI Yuehui, et al. Calculation and influence factor analysis on lateral bearing capacity of squeezed branch and plate pile[J]. Engineering Mechanics, 2009, 26(7):97-104.
[13] 孔令刚,姜丽红,陈仁朋,等. 倾斜上拔荷载下挤扩支盘桩响应分析[J]. 应用力学学报, 2013, 30(2):228-233. KONG Linggang, JIANG Lihong, CHEN Renpeng, et al. Response of squeezed branch piles under inclined uplift loads[J]. Chinese Journal of Applied Mechanics, 2013, 30(2):228-233.
[14] 蒋建平,高广运,顾宝和. 扩径桩承载性状及其Q-s曲线的幂双组合数学模型描述[J]. 工程力学, 2010, 27(11):120-126. JIANG Jianping, GAO Guangyun, GU Baohe. Bearing behaviors and description of Q-s curves of piles with expanded diameter based on power-hyperbola combined model[J]. Engineering Mechanics, 2010, 27(11):120-126.
[15] 巨玉文,梁仁旺,白晓红,等. 挤扩支盘桩中支盘破坏形态的试验研究[J]. 工程力学, 2013, 30(5):188-194. JU Yuwen, LIANG Renwang, BAI Xiaohong, et al. Experimental study on the failure pattern of expanded plates of the squeezed branch pile[J]. Engineering Mechanics, 2013, 30(5):188-194.
[16] 贾超,张国荣. 基于强度折减法随机裂隙岩体结构稳定性分析[J]. 山东大学学报(工学版), 2013, 43(6):57-64. JIA Chao, ZHANG Guorong. Stability analysis of random fractured rock mass structure based on the strength reduction method[J]. Journal of Shandong University(Engineering Science), 2013, 43(6):57-64.
[17] 吕国仁,隋斌,王永进,等. 浅埋偏压隧道开挖数值模拟及稳定性研究[J]. 山东大学学报(工学版), 2013, 43(4):68-73. LYU Guoren, SUI Bin, WANG Yongjin, et al. Study on numerical simulation and stability analysis shallow buried tunnel excavation under unsymmetrical pressure[J]. Journal of Shandong University(Engineering Science), 2013, 43(4):68-73.
[18] 孙克国,仇文革,王中平,等. 高速公路改扩建工程对高铁隧道的近接施工影响[J]. 山东大学学报(工学版), 2015, 45(5):70-76. SUN Keguo, QIU Wenge, WANG Zhongping, et al. Study on approaching excavation influence between expanding projects of expressway and high speed railway tunnel under operation state[J]. Journal of Shandong University(Engineering Science), 2015, 45(5):70-76.
[19] 李枫,宋焕豹,周云东. 挤扩支盘桩的承载特性[J]. 河海大学学报(自然科学版), 2010, 38(2):202-205. LI Feng, SONG Huanbao, ZHOU Yundong. Bearing behaviors of squeezed branch piles[J].Journal of Hohai University(Natural Science), 2010, 38(2):202-205.
[20] 王者超,李术才,薛翊国,等. 大型地下水封石油洞库围岩完整性、变形和稳定性分析[J]. 山东大学学报(工学版), 2011, 41(3):112-117. WANG Zhechao, LI Shucai, XUE Yiguo, et al. Integrity, deformation and stability of a rock mass around underground crude oil storage caverns in containment of groundwater[J]. Journal of Shandong University(Engineering Science), 2011, 41(3):112-117.
[21] GU Ming, KONG Linggang, CHEN Renpeng, et al. Response of 1×2 pile group under eccentric lateral loading[J]. Computers and Geotechnics, 2014, 57:114-121.
[22] 贾堤,石峰,郑刚,等. 深基坑工程数值模拟土体弹性模量取值的探讨[J]. 岩土工程学报, 2008, 30(增刊):155-158 JIA Di, SHI Feng, ZHENG Gang, et al. Elastic modules of soil used in numerical simulation of deep foundations pits[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(Supp.):155-158.
[23] 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, 30(3):323-330. ZHENG Gang, WANG Li. Load transfer and bearing capacity of inclined pile under vertical load[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(3):323-330.
[24] 费康,张建伟. ABAQUS在岩土工程中的应用[M]. 北京:中国水利水电出版社,2010.
[25] 费康,刘汉龙,高玉峰,等. 现浇混凝土薄壁管桩的荷载传递机理[J]. 岩土力学, 2004, 25(5):764-768. FEI Kang, LIU Hanlong, GAO Yufeng, et al. Load transfer mechanism for field pour concrete thin wall cased pile(PCC)[J]. Rock and Soil Mechanics, 2004, 25(5):764-768.
[1] LI Lianxiang, LIU Bing, CHENG Xiaoyang. Soil pressure distribution behind the basement wall considering the permanent existence of foundation pit retaining piles [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2018, 48(2): 30-38.
[2] MI Chunrong, LI Jianming. Development and application of after grouting device for prestressed concrete pipe pile [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2016, 46(4): 89-95.
[3] ZHANG Na1,2, CUI Xin-zhuang1,2*, ZHANG Jiong1,2, ZHOU Ya-xu1,2, GAO Zhi-jun1,2, SUI Wei1,2. Settlement-controlling and pressure-reduction effect of pervious concrete pile  under the action of embankment load [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2013, 43(4): 80-86.
[4] CUI Xin-zhuang,JIN Qing . The dynamic response of saturated asphalt pavement under wheel loads [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2008, 38(5): 19-24 .
[5] GAO Zhijun, CUI Xinzhuang, SUI Wei, GUO Hong, LIU Hang, LI Changyi, FENG Hongbo. Dynamic interaction and damage analysis of large runaway vehicle and tunnel lining [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2014, 44(5): 49-57.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] CHEN Rui, LI Hongwei, TIAN Jing. The relationship between the number of magnetic poles and the bearing capacity of radial magnetic bearing[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2018, 48(2): 81 -85 .
[2] CHENG Daizhan, LI Zhiqiang. A survey on linearization of nonlinear systems[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2009, 39(2): 26 -36 .
[3] WANG Yong, XIE Yudong. Gas control technology of largeflow pipe[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2009, 39(2): 70 -74 .
[4] LIU Xin 1, SONG Sili 1, WANG Xinhong 2. [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2009, 39(2): 98 -100 .
[5] . [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2009, 39(2): 104 -107 .
[6] CHEN Huaxin, CHEN Shuanfa, WANG Binggang. The aging behavior and mechanism of base asphalts[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2009, 39(2): 125 -130 .
[7] . [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2009, 39(2): 131 -136 .
[8] LI Shijin, WANG Shengte, HUANG Leping. Change detection with remote sensing images based on forward-backward heterogenicity[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2018, 48(3): 1 -9 .
[9] XUE Cheng-qian,DONG Jian-wen,MENG Xian-feng,CHANG Hong,CAO Ning,CHEN Hua-ying,LI Mu-sen . The effect of C/C+HA bonerepairing material to the physiological and biochemical response of the crossed Boer Goat[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2008, 38(3): 73 -76 .
[10] ZHAO Ke-Jun, WANG Xin-Jun, LIU Xiang, CHOU Yi-Hong. Algorithms of continuous top-k join query over structured overlay networks[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2009, 39(5): 32 -37 .