›› 2008, Vol. 29 ›› Issue (4): 893-896.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental research on bearing characters of screw pile group

DONG Tian-wen1,2, LIANG li2, HUANG Lian-zhuang3, YANG Chong-guang3, WANG Ming-shu2   

  1. 1. Liaoning Provincial College of Communications; Shenyang 110122, China ; 2. Northeastern University, Shenyang 110004, China; 3. Liaoning Electrical Power Reconnaissance and Design Institute, Shenyang 110016, China
  • Received:2006-03-31 Online:2008-04-10 Published:2013-07-10

PDF (PC)

1378

Abstract: Based on the results of the field static load test of the screw pile group, some influencing factors of the bearing capacity of screw-pile group is analyzed, and the influences of geometric parameters of pile group on end bearing and friction resistance of pile group under ultimate loading are discussed. From the analysis of testing results, the bearing capacity of screw pile group is obviously influenced by the distance of lamina between screw piles and the length of pile from the first layer of lamina to the base of pile cap. When the ratio of pile spacing of lamina, which is the ratio of the pile spacing to the diameter of lamina, is less than 2, there are not the obvious inflexions and presented the slow change for the load-displacement curve of the static load test of screw-pile group; for these failures of pile group belonged to the general failure. At the same time, the lamina of screw pile is able to promote the reciprocity among pile, soils and pile cap by limiting height of the active zone of deformation of soils under pile cap, and the displacement of pile group is decreased.

Key words: screw pile, pile group, static load test

CLC Number: 

  • TU 473.1+1
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
[1] ZHANG Zhi-guo, ZHANG Rui, HUANG Mao-song, GONG Jian-fei, . Optimization analysis of pile group foundation based on differential settlement control and axial stiffness under vertical loads [J]. Rock and Soil Mechanics, 2019, 40(6): 2354-2368.
[2] CAI Qi-peng, GAN Gang-lu, NG C. W. W., CHEN Xing-xin, XIAO Zhao-yun, . Study on failure mechanism and setback distance of a pile group in sand subjected to normal faulting [J]. Rock and Soil Mechanics, 2019, 40(3): 1067-1075.
[3] SHI Dan-da, YANG Yan-cheng, DENG Yi-bing, LIU Wen-bai,. Experimental study of the effect of drilling velocity ratio on the behavior of auger piling in sand [J]. , 2018, 39(6): 1981-1990.
[4] YANG Yao-hui, CHEN Yu-min, LIU Han-long, LI Wen-wen, JIANG Qiang, . Investigation on liquefaction resistance performance of rigid-drainage pile groups by shaking table [J]. , 2018, 39(11): 4025-4032.
[5] MA Xue-ning, FU Jiang, WANG Jun, WANG Xu，. Effect of different surcharge loading forms on negative skin friction of pile groups [J]. , 2018, 39(10): 3531-3538.
[6] XIN Dong-dong, ZHANG Le-wen, SU Chuan-xi. Settlement research of pile groups in layered soils based on virtual soil-pile model [J]. , 2017, 38(8): 2368-2376.
[7] WANG Jia-quan, LIU Lei-lei, ZHU Qing-sheng, ZHANG Hao,. Experiment on residual stress of close-end pipe piles jacked into layered red clay [J]. , 2017, 38(7): 1878-1886.
[8] LIU Lin-chao, YAN Qi-fang, YAN Pan. Horizontal vibration of pipe pile groups in saturated soil considering three-dimensional wave effects [J]. , 2017, 38(10): 2817-2825.
[9] FENG Jun, ZHANG Jun-yun, ZHU Ming, JIANG Nan,. Characteristic study of horizontal bearing capacity and pile group effect coefficient of laterally loaded high pile group foundation for bridge in soft soil [J]. , 2016, 37(S2): 94-104.
[10] KONG Gang-qiang, GU Hong-wei, Zhou Li-duo, PENG Huai-feng, . Study of pipe group effects efficiency of belled wedge pile with low cap [J]. , 2016, 37(S2): 461-468.
[11] ZHOU Min-ming, QIAN Jian-gu, HUANG Mao-song, HU Yu-ying,. Discrete element simulation of failure mechanism of interface between grouting-screw pile and soil [J]. , 2016, 37(S1): 591-595.
[12] MA Shao-kun , SHAO Yu , Lü Hu , WONG K S , NG C W W , CHEN Xin , JIANG Jie，. A study of the long-term influence of twin tunneling on the existing pile group under cyclic variation of groundwater level [J]. , 2016, 37(6): 1563-1568.
[13] YANG Wei , LIANG Fa-yun , CHEN Hai-bing , . An approximate decoupling method for interaction of large-scale pile groups [J]. , 2015, 36(S1): 137-141.
[14] WANG Bin ，QIAN Jian-gu ，CHEN Hong-wei ，HUANG Mao-song ，HU Yu-yin,. Numerical analysis of grouting-screw pile uplift bearing capacity [J]. , 2014, 35(S2): 572-578.
[15] LIN Zhi-yong , DAI Zi-hang , . Interaction coefficients method for calculating piles group settlements considering reinforcing and restraining effect [J]. , 2014, 35(S1): 221-226.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] ZHOU Jun-ping, XIAN Xue-fu, JIANG Yong-dong, LI Xiao-hong, JIANG De-yi. A permeability model including effective stress and coal matrix shrinking effect[J]. , 2010, 31(7): 2317 -2323 .
[2] CHANG Lin-yue, WANG Jin-chang, ZHU Xiang-rong, TONG Lei. Analytical elastoplastic solutions of laterally loaded long piles[J]. , 2010, 31(10): 3173 -3178 .
[3] BAI Bing, LI Chun-feng. Elastoplastic dynamic responses of close parallel metro tunnels to vibration loading[J]. , 2009, 30(1): 123 -128 .
[4] ZHANG Yi-ping ，WANG Yang ，LI Tao. Study of equivalent elastic parameters of composite foundations[J]. , 2011, 32(7): 2106 -2110 .
[5] CHEN Ya-qin , ZHANG Hong-guang , DANG Fa-ning. Study of new type of Daubechies wavelet connection coefficient used in computation of pile foundations[J]. , 2011, 32(8): 2459 -2466 .
[6] WANG Hai-liang ，YE Chao-liang. Variation pattern of soil physico-mechanical performance by explosive enlargement[J]. , 2011, 32(9): 2617 -2622 .
[7] CHEN Zhi-gang. Dynamic stress concentration around shallow cylindrical cavity by SH wave in anisotropically elastic half-space[J]. , 2012, 33(3): 899 -905 .
[8] WANG You , LIU Jian-hua , WANG Xing-hua , CAI Jun-jun. Nonlinear finite element analysis of pile-soil interaction of bridge pile group foundation in soft soil stratum[J]. , 2012, 33(3): 945 -951 .
[9] CHENG Yong-feng，DING Shi-jun. Prototype tests of assembly foundation of transmission line in aeolian sand area[J]. , 2012, 33(11): 3230 -3236 .
[10] CHI Shi-chun，CHEN Chong-mao，JIA Yu-feng. Ramberg-Osgood model with variable parameters of earth-rock materials for earth-rock dam and its adaptability[J]. , 2013, 34(1): 1 -5 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd