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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:

25卷

期数:

2008年03期

页码:

87-91

栏目:

出版日期:

2008-09-20

文章信息/Info

Title:

Design of Bearing Capacity of Two-pile Thick Caps

作者:

过超¹,龚维明¹,卢波²,卢建峰³

1.东南大学土木工程学院,江苏南京210096;2.日照市规划建设委员会质量监督站, 山东日照276826;3.南京市建筑设计研究院有限责任公司,江苏南京210096

Author(s):

GUO Chao¹, GONG Wei-ming¹, LU Bo², LU Jian-feng³

1. School of Civil Engineering, Southeast University, Nanjing 210096, Jiangsu, China; 2. Quality Supervision Station of Rizhao Planning and Urban Construction Committee, Rizhao 276826, Shandong, China; 3. Nanjing Architectural Design & Research Institute Ltd, Nanjing 210096, Jiangsu, China

关键词:

两桩厚承台;  承载力;  剪切;  拉压杆模型;  受力特点;  破坏模式

Keywords:

two-pile thick cap;  bearing capacity;  shear;  strut-and-tie model;  mechanical prop-erty;  failure mode

分类号:

TU473.12

DOI:

-

文献标志码:

A

摘要:

根据两桩厚承台的受力特点和破坏模式,以拉压杆模型为基础,探讨了模型建立的原则和方法,提出了两桩厚承台按拉压杆模型设计的方法并给出了相应的计算公式,选取6个两桩厚承台室内试验结果并分别采用各国规范设计方法及拉压杆模型设计方法进行比较验证。结果表明:各方法用于两桩厚承台设计均安全可靠,但采用拉压杆模型的承台设计方法符合厚承台的受力机理,用该方法算得的承台承载力与试验值吻合较好。

Abstract:

According to the mechanical properties and failure mode of two-pile thick caps, the principles of model building and method were discussed based on strut-and-tie model. The corresponding formulae for calculating the bearing capacity of two-pile thick caps were proposed and the design method was given. The indoor test results of six two-pile thick caps were adopted for verifying the design methods introduced in different country codes and the strut-and-tie model design method presented in the paper. The results show that all of the methods used for designing the two-pile thick caps are safe and reliable, however, the strut-and-tie model used for designing thick pile caps represents the load-transferring mechanism, and the bearing capacity calculated by using the method presented in the paper is in good agreement with the test data.

参考文献/References:

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备注/Memo

备注/Memo:

收稿日期:2008-05-04
基金项目:江苏省交通科技项目(04Y029)
作者简介:过 超(1984-),男,江西临川人,工学博士研究生,E-mail:guochao422@163.com。

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更新日期/Last Update: 2008-09-20