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重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2017, Vol. 36 ›› Issue (4): 63-68.DOI: 10.3969/j.issn.1674-0696.2017.04.11

• 港口航道·水利水电·资源环境 • 上一篇    下一篇

单排桩基-承台-挡墙组合支挡结构设计计算方法

王俊杰1，2，赵迪1,2，杨恒1,2   

  1. (1.重庆交通大学 国家内河航道整治工程技术研究中心，重庆 400074； 2.重庆交通大学 水利水运工程教育部重点实验室，重庆 400074)
  • 收稿日期:2016-09-01 修回日期:2016-12-11 出版日期:2017-04-20 发布日期:2017-05-02
  • 作者简介:王俊杰(1973—)，男，甘肃陇西人，教授,博士生导师，主要从事岩土工程方面的研究。E-mail：wangjunjie@cqjtu.edu.cn。
  • 基金资助:
    国家科技支撑计划课题项目(2015BAK09B01)；重庆市基础与前沿研究计划项目(cstc2014jcyjA30003；cstc2015jcyjBX0139)；重庆交通大学国家内河航道专治工程技术研究中心暨 水利水运工程教育部重点实验室开放基金资助项目(SLK2014B076)

Calculation Method of Retaining Structure Composed by Single Row Pile-Platform-Wall

WANG Junjie1,2, ZHAO Di1,2, YANG Heng1,2   

  1. (1. National Engineering Research Center for Inland Waterway Regulation, Chongqing Jiaotong University, Chongqing 400074, P. R. China; 2. Key Laboratory of Hydraulic & Waterway Engineering of the Ministry of Education, Chongqing Jiaotong University, Chongqing 400074, P. R. China)
  • Received:2016-09-01 Revised:2016-12-11 Online:2017-04-20 Published:2017-05-02

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摘要： 桩基-承台-档墙是一种新型组合支挡结构，已在实际工程中有所应用，但其设计计算方法仍很不成熟。传统计算中将桩基、承台连接视为铰接，承台弯矩计算中忽略地基反力，此与实 际情况有较大差异。基于此，针对单排桩基-承台-挡墙组支挡结构，提出了同时考虑地基抗力和桩-承台协调作用的设计方法，并通过工程实例与有限元计算结果对比分析，验证了理论方法的 可靠性。结果表明：在计算承台弯矩、桩基弯矩和剪力时，均应同时考虑地基抗力和桩基-承台协调作用。

关键词: 岩土工程, 组合支挡结构, 设计计算, 地基抗力, 桩-承台协调作用

Abstract: Pile-platform-wall is a new kind of composite retaining structure, which has been used in actual engineering works, but its design calculation method is still immature. In traditional calculation, the pile foundation and platform connection were regarded as the hinge and the subgrade reaction was usually ignored in the calculation of bending moment, which was quite different from the actual situation. Based on the above situation, aiming at the single row pile-platform-wall structure, a new design calculation method was proposed, in which the subgrade reaction and the interaction between the pile and platform were considered. The reliability of the proposed method was verified by comprising its calculation results with those obtained from the finite element method in an actual engineering case. The results indicate that in the calculation process of bending moment of platform, bendingmoment and shearing force of pile foundation, both of the subgrade reaction and pile-platform interaction should be considered.

Key words: geotechnical engineering, composite retaining structure, design calculation, subgrade reaction, pile-platform interaction

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