›› 2009, Vol. 30 ›› Issue (11): 3423-3428.

• Geotechnical Engineering • Previous Articles     Next Articles

Method for calculating rational thickness of cushion in rigid pile composite ground

QI Le，SHI Jian-yong，CAO Quan   

  1. 1.Geotechnical Research Institute, Hohai University, Nanjing 210098; 2.Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098
  • Received:2008-04-20 Online:2009-11-10 Published:2010-01-07

PDF (Chinese)

2858

Abstract:

In the process of designing rigid pile composite foundation, thickness of cushion is very important. It is one of the most important factors in the bearing capacity. But there is no theoretical method in designing the thickness of cushion. Based on the relation among pile-soil-cushion, a method for calculating rational thickness of cushion in rigid pile composite ground is derived. The optimization design of the rigid pile composite ground can be performed with this method. Analysis shows that adjusting the stress ratio by changing cushion thickness would exert the bearing capacity and reduce the engineering cost.

Key words: rigid pile composite ground, cushion, rational thickness, pile-soil stress ratio, bearing capacity

CLC Number: 

  • TU 472
[1] HUANG Yu-hua, XU Lin-rong, ZHOU Jun-jie, CAI Yu, . Calculation of pile-soil stress in pile-net composite foundation based on improved Terzarghi method [J]. Rock and Soil Mechanics, 2020, 41(2): 667-675.
[2] DAI Guo-liang, ZHU Wen-bo, GUO Jing, GONG Wei-ming, ZHAO Xue-liang, . Experiments on vertical uplift bearing capacity of suction caisson foundation in soft clay [J]. Rock and Soil Mechanics, 2019, 40(S1): 119-126.
[3] LI Zhi-cheng, FENG Xian-dao, SHENG Li-long, . Experimental study of deformation characteristics of pebble cushion with furrow for immersed tunnel [J]. Rock and Soil Mechanics, 2019, 40(S1): 189-194.
[4] WANG Qin-ke, MA Jian-lin, CHEN Wen-long, YANG Yan-xin, HU Zhong-bo, . Centrifugal model tests and calculation method of uplift bearing capacity of rock-socketed pedestal pile overburden soil [J]. Rock and Soil Mechanics, 2019, 40(9): 3405-3415.
[5] ZHANG Lei, WANG Ning-wei, JING Li-ping, FANG Chen, DONG Rui, . Comparative experiments of different electrode materials on electro-osmotic consolidation [J]. Rock and Soil Mechanics, 2019, 40(9): 3493-3501.
[6] ZHANG Yi-hu, WU Ai-qing, ZHOU Huo-ming, WANG Shuai, LUO Rong, FAN Lei. Review of bearing capacity and deformation characteristics of tunnel- type anchorage for suspension bridge [J]. Rock and Soil Mechanics, 2019, 40(9): 3576-3584.
[7] YUAN Wei, LIU Shang-ge, NIE Qing-ke, WANG Wei, . An approach for determining the critical thickness of the karst cave roof at the bottom of socketed pile based on punch failure mode [J]. Rock and Soil Mechanics, 2019, 40(7): 2789-2798.
[8] MU Rui, PU Shao-yun, HUANG Zhi-hong, LI Yong-hui, ZHENG Pei-xin, LIU Yang, LIU Ze, ZHENG Hong-chao, . Determination of ultimate bearing capacity of uplift piles in combined soil and rock masses [J]. Rock and Soil Mechanics, 2019, 40(7): 2825-2837.
[9] LI Shu-zhao, WANG Zhong-chang, JIA Xu, HE Lin-lin, . Simplified calculation method for cyclic bearing capacity of suction anchors with taut mooring in soft clay [J]. Rock and Soil Mechanics, 2019, 40(5): 1704-1712.
[10] RUI Rui, SUN Yi, ZHU Yong, WU Duan-zheng, XIA Yuan-you, . Mesoscopic working mechanism of cushion of composite foundation under rigid slab [J]. Rock and Soil Mechanics, 2019, 40(2): 445-454.
[11] WANG Dong-yong, CHEN Xi, YU Yu-zhen, LÜ Yan-nan, . Ultimate bearing capacity analysis of shallow strip footing based on second- order cone programming optimized incremental loading finite element method [J]. Rock and Soil Mechanics, 2019, 40(12): 4890-4896.
[12] FENG Jun, WANG Yang, ZHANG Yu-feng, HUANG Lin, HE Chang-jiang, WU Hong-gang, . Experimental comparison of anchorage performance between basalt fiber and steel bars [J]. Rock and Soil Mechanics, 2019, 40(11): 4185-4193.
[13] CHEN Chang-fu, QIU Lin-qi, MAO Feng-shan, ZHOU Zhi-jun, . Design optimization of pile-net composite foundation based on perturbation-weighted symbiotic organisms search (PWSOS) algorithm [J]. Rock and Soil Mechanics, 2019, 40(11): 4477-4485.
[14] ZHOU Tong-he, GAO Xin-jun, GUO Yuan-cheng, SUN Yi-bin, . Design method and experimental study of uplift bearing capacity of the lower enlarged composite pile [J]. Rock and Soil Mechanics, 2019, 40(10): 3778-3782.
[15] ZHENG Jun-jie, LÜ Si-qi, CAO Wen-zhao, JING Dan, . Numerical simulation of composite rigid-flexible pile-supported retaining wall under the action of high-filled expansive soil [J]. Rock and Soil Mechanics, 2019, 40(1): 395-402.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] LIU Yu-cheng，CAO Shu-gang，LIU Yan-bao. Discussion on some time functions for describing dynamic course of surface subsidence due to mining[J]. , 2010, 31(3): 925 -931 .
[2] LIU En-long. Breakage mechanics for geomaterials: Breakage mechanism of structural blocks and binary-medium model[J]. , 2010, 31(S1): 13 -22 .
[3] YANG Jian-min, ZHENG Gang. Classification of seepage failures and opinion to formula for check bursting instability in dewatering[J]. , 2009, 30(1): 261 -264 .
[4] YE Fei, ZHU He-hua, HE Chuan. Back-filled grouts diffusion model and its pressure to segments of shield tunnel[J]. , 2009, 30(5): 1307 -1312 .
[5] CHEN Lin, ZHANG Yong-xing, RAN Ke-xin. A method for calculating active earth pressure considering shear stress[J]. , 2009, 30(S2): 219 -223 .
[6] LUO Qiang , WANG Zhong-tao , LUAN Mao-tian , YANG Yun-ming , CHEN Pei-zhen. Factors analysis of non-coaxial constitutive model’s application to numerical analysis of foundation bearing capacity[J]. , 2011, 32(S1): 732 -0737 .
[7] SHI Chong , XU Wei-ya , ZHANG Yu , LI De-liang , LIU He. Study of dynamic parameters for talus deposit based on model of cellular automata[J]. , 2011, 32(6): 1795 -1800 .
[8] GONG Wei-ming, HUANG Ting, DAI Guo-liang. Experimental study of key parameters of high piled foundation for offshore wind turbine[J]. , 2011, 32(S2): 115 -121 .
[9] WANG Cheng-bing. Laboratory and numerical investigation on failure process of tunnel constructed in homogeneous rock[J]. , 2012, 33(1): 103 -108 .
[10] SONG Yi-min , JIANG Yao-dong , MA Shao-peng , YANG Xiao-bin , ZHAO Tong-bin . Evolution of deformation fields and energy in whole process of rock failure[J]. , 2012, 33(5): 1352 -1356 .
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