Study on squeezing effect against soil and pore pressure by pile pushing in saturated soft clay foundation

Journal of Chongqing Jiaotong University(Natural Science) ›› 2000, Vol. 19 ›› Issue (3): 1-3,7.

Study on squeezing effect against soil and pore pressure by pile pushing in saturated soft clay foundation

BAI Bing, XU Jian-ping, ZHOU Jian

Dept. of Geotechnical Engineering, Tongji University, SHanghai 200092, China

Received:2000-01-07 Online:2000-06-19 Published:2016-11-09

饱和软粘土地基沉桩过程中桩土挤压应力及超孔压计算

白冰, 徐建平, 周健

上海同济大学地下建筑与工程系, 上海 200092

作者简介:白冰(1966-),男,内蒙古人,博士,副教授,同济大学地下建筑与工程系在站博士后,现主要从事软土地基加固方面的研究
基金资助:
国家自然科学基金重点资助项目(59738160)

Abstract

Abstract: The excess pore water pressure of saturated soft clay foundation caused by pile pushing is obvious.The method for calculating squeezing stress and excess pore pressure by elastic-plastic theory is deduced in this paper,and furthermore,the reasonable pile spacing by regarding the influence of both squeezing stress and excess water pressure is given.

Key words: saturated soft clay, squeezing stress, disturbance, pore pressure, pile spacing

摘要： 饱和软粘土地基沉桩过程中桩土挤压所引起的桩周土体超孔隙水压力效应是非常显著的.本文从弹塑性理论出发推导出沉桩过程中桩周土体挤压应力及超孔隙水压力的计算公式,给出了考虑挤压应力和超孔隙水压力等影响因素的合理打桩间距的确定方法

关键词: 饱和软粘土, 挤压应力, 扰动, 孔隙水压力, 打桩间距

CLC Number:

BAI Bing, XU Jian-ping, ZHOU Jian. Study on squeezing effect against soil and pore pressure by pile pushing in saturated soft clay foundation[J]. Journal of Chongqing Jiaotong University(Natural Science), 2000, 19(3): 1-3,7.

白冰, 徐建平, 周健. 饱和软粘土地基沉桩过程中桩土挤压应力及超孔压计算[J]. 重庆交通大学学报（自然科学版）, 2000, 19(3): 1-3,7.

[1]	ZHOU Enquan, YI Sihang, XU Xiang, LU Jianfei. Cyclic Liquefaction Characteristics for Saturated Sand Based on Thermodynamic Dissipation [J]. Journal of Chongqing Jiaotong University(Natural Science), 2020, 39(02): 111-117.
[2]	HAN Huiqing1，ZHANG Yingjia1，GAO Hongjuan2，LI Lin1，ZHAI Chenyu1，LI Ling1. Analysis of Ecosystem Disturbance in Economic Corridor Along Southern Silk Road Based on Land Use [J]. Journal of Chongqing Jiaotong University(Natural Science), 2018, 37(06): 69-75.
[3]	LI Zhida，SHAO Yu. Consolidation Characteristics of Soft Clay Ground Subject to Non-uniformly Distributed Initial Pore Pressure [J]. Journal of Chongqing Jiaotong University(Natural Science), 2017, 36(10): 45-50.
[4]	REN Yongzhong, MA Shoucai. Soil Arching of Anti-Slide Piles Based on Different Skewback Forms [J]. Journal of Chongqing Jiaotong University(Natural Science), 2016, 35(1): 101-106.
[5]	Fang Yong , Yang Bin , Yang Zhihao , Fu Yapeng. Inf1uence of Metro Shield Tunnel Construction on Ground Disturbance [J]. Journal of Chongqing Jiaotong University(Natural Science), 2014, 33(1): 36-41.
[6]	ZHOU Liang，LIAO Shao-ming，SHI Ning-qiang，LI Jia-ping. In-situ Test of Grouting Reinforcement for Subway Tunnel Foundation in Soft Ground [J]. Journal of Chongqing Jiaotong University(Natural Science), 2010, 29(6): 880-884.
[7]	LI Quo-wei , LI Wen-biao. Research for soil-parameters back analysis and displacement prediction of deep excavation [J]. Journal of Chongqing Jiaotong University(Natural Science), 2004, 23(4): 54-56.
[8]	Yang Hu. Sensitivity for Linear Restricted parameter Estimations [J]. Journal of Chongqing Jiaotong University(Natural Science), 1990, 9(2): 98-105.