A calculation method of pile shaft ultimate friction of tip post
grouted super-long bored pile

LI Yong-hui; WANG Wei-dong; WU Jiang-bin

doi:10.16285/j.rsm.2015.S1.066

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A calculation method of pile shaft ultimate friction of tip post grouted super-long bored pile

更新时间：2026-06-25

- A calculation method of pile shaft ultimate friction of tip post grouted super-long bored pile
- Vol. 36, Issue S1, Pages: 382-386(2015)
- 作者机构：
  
  1. 郑州大学土木工程学院,河南,郑州,450001
  2. 华东建筑设计研究院总院,上海,200002
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2015.S1.066
  CLC： TU473.1
- Online First：14 June 2018，
  
  Published：2015
- 稿件说明：
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LI Yong-hui, WANG Wei-dong, WU Jiang-bin. A calculation method of pile shaft ultimate friction of tip post grouted super-long bored pile[J]. 2015, 36(S1): 382-386.
DOI：

LI Yong-hui, WANG Wei-dong, WU Jiang-bin. A calculation method of pile shaft ultimate friction of tip post grouted super-long bored pile[J]. 2015, 36(S1): 382-386. DOI： 10.16285/j.rsm.2015.S1.066.

摘要

目前超长灌注桩普遍应用于大型桥梁、超高层建筑工程中，且常采用桩端后注浆技术，但其桩侧极限摩阻力的确定尚未有切合其实际特点的方法。大量现场实测数据反分析表明，采用法计算时，存在桩侧土压力大于土层静止土压力的现象。在探讨桩侧土压力增大机制的基础上，对法进行改进，建立了桩侧土压力确定方法，并给出了桩侧土压力系数的取值公式。工程实例计算结果与试桩实测结果比较分析表明，所建立的桩端后注浆超长灌注桩桩侧极限摩阻力计算方法具有合理性与可行性。

Abstract

Tip post grouted super-long bored piles are generally used in large-scale bridge and super high-rise building projects. However

the reasonable method for calculating the pile shaft ultimate friction is still limited. According to back analysis of some measured data

the lateral soil pressures of the pile shaft are larger than the earth pressures at rest when the method is adopted. The influence factors of the lateral soil pressures of pile shaft are discussed. Then

the traditional method is improved. A method for determining the lateral soil pressures of pile shaft is established. Moreover

a formula for calculating the lateral earth pressure coefficients of the pile shaft is also given. At last

field test piles of two project cases

Shanghai World Expo Underground Substation project and Shanghai Center Tower project

are calculated by the improved method. Through comparing with the measured results

the recommended values of the site investigation and the specification values

the calculation results are more consistent with the measured results. This shows that the calculation method of pile shaft ultimate friction of the tip post grouted super-long bored pile is feasible and rational.

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Experimental research on pile-soil interface shear behaviors of super-long bored pile

Experimental study of effects of pile tip post grouting on bearing characteristics of large-diameter bored pile

Related Author

WU Jiang-bin

LI Yong-hui

WANG Wei-dong

FANG Kai

HE Jing-yu

ZHANG Zhong-miao

WANG Ji-hua

FENG Qing-gao

Related Institution

Department of Geotechnical Engineering, Tongji University

East China Architectural Design & Research Institute

Institute of Geotechnical Engineering, Zhejiang University

Key Laboratory of Soft Soils and Geoenvironmental Engineering, Ministry of Education, Zhejiang University

Urban and Rural Construction Commission of Nanning City, Guangxi Zhuang Autonomous Region

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