卢建峰¹，  蒋永生²，  梁书亭²
（1 南京市建筑设计研究院有限责任公司，南京210005；2 东南大学土木工程学院，南京210096）

[摘要] 现行规范中，承台设计均基于刚性假定。本文分析了桩顶反力分布的影响因素，并通过将桩-承台体系简化为弹簧支承的连续梁，推导出满足近似刚性要求的承台厚度计算公式。与有限元分析结果对比表明，建议公式具有较高的精度。
[关键词] 承台；弹簧支承连续梁；刚度要求；厚度
中图分类号：TU470    文献标识码：A  文章编号：1002-848X(2011) S2-0375-03

    Calculation on the thickness of pile cap according to rigidity requirement
    Lu Jianfeng¹, Jiang Yongsheng², Liang Shuting²
    (1 Nanjing Architectural Design ＆Research Institute Co., Ltd., Nanjing 210005, China; 2 College of Civil Engineering, Southeast University, Nanjing 210096, China)

Abstract: Pile caps are designed on the basis of rigid-block assumption in current specification. The factors wluch affect pile load distribution were discussed. By simplifying pile cap as a continuous beam with spring supports,a series of formula computing depth of pile cap were proposed to meet the rigidity requirement. The proposed formulas are of high accuracy compared with finite-element analysis results.
Keywords: pile cap; continuous beam with spring supports; rigidity requirement; tluckness