桩筏基础中筏板厚度确定的研究

郭宏磊; 丁大钧; 李成江

doi:10.13204/j.gyjz200505007

桩筏基础中筏板厚度确定的研究

doi: 10.13204/j.gyjz200505007

1.
1. 华中科技大学武汉 430074;
2.
2. 东南大学南京 210096;
3.
3. 中冶集团建筑研究总院北京 100088

详细信息

作者简介:
郭宏磊男 1964年10月出生博士江汉大桥副教授

中图分类号: TU471
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- 文章访问数: 88
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- 被引次数: 0
出版历程
- 收稿日期: 2004-12-12
- 刊出日期: 2005-05-20

STUDY ON DETERMINATION OF RAFT THICKNESS OF PILE-RAFT FOUNDATION

1.
1. Huazhong University of Scieuce and Technlogy Wuhan 430074;
2.
2. Southeast University Nanjing 210096;
3.
3. Gentral Research Institute of Building and Construction,MCC Group Beijing 100088

摘要

摘要: 为克服传统上确定桩筏基础筏板厚度方法的弊端，提出了先按正常使用极限状态确定筏板厚度，再按承载能力极限状态加以验算的方法，分析了这两种极限状态中，影响筏板厚度的基本因素，结合板的理论、桩筏基础和上部结构的共同工作、承台冲切破坏的空间桁架理论以及工程实践经验，给出了预估筏板厚度和冲切外力及冲切抗力的简明计算式，并附以算例以及其他确定筏板厚度的方法加以讨论，最后给出了合理确定筏板厚度的完整步骤。
- 桩筏基础 /
- 筏板厚度 /
- 正常使用极限状态 /
- 承载能力极限状态 /
- 桁架理论
Abstract: In order to overcome the shortcomings of determining the raft thickness of a pile-raft foundation traditionally,a complete method of determining the thickness of a raft can be obtained by the following steps:It is proposed that a method in which the thickness of a raft can be determined first in accordance with the limit state of normal service and is then checked according to the limit state of bearing capacity,and the basic factors influencing the raft thickness in the two limit states are analyzed,the simplified formulas of estimating the raft thickness,external force and resistance of two-way shearing are given by combining the plate theory,coworking of the pile-raft foundation and superstructure,strut-and-tie theory of pile cap punching as well as project experience,the calculative examples and other methods to determine raft thickness are also discussed.
- pile-raft foundation /
- raft thickness /
- limit state of normal use /
- limit state of bearing capacity /
- strut-and-tie-theory

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参考文献(10)

郭宏磊.桩筏基础中筏板厚度确定的研究:[博士学位论文].南京:东南大学,1997;

[2] 郭宏磊、丁大钧.厚承台空间桁架受力机理的研究.工业建筑,1997,27(8～9);

[3] 郭宏磊、丁大钧.承台冲切承载力的研究.工业建筑,1999,29(2);

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[6] Rabe J. Ein Neunfeldrins. Randtragerversteifes Flachdeck-Ensystem unter Gleichmassing Verteilter Vollast, Theorie and Praxis Des Stahlbeton Baues. Festschrift Franz, Wilhelm Ernst SL Sohn. Berlin:Munchen. 1969;

[7] Szilard R.板的理论和分析.北京:中国铁道出版社,1999;

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[9] 赵锡宏.龚剑.桩筏(箱)基础的荷载分担实测、计算值和机理分析.岩土力学,2005(3);

[10] 杨敏.基础设计的刚度法--一个新的设计概念.见:博士论丛.上海:同济大学出版社,1993

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