柱下两桩承台的设计方法
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（1 西南大学工程技术学院， 重庆 400715； 2 重庆市工业学校， 重庆 400060）［摘要］承台在桩基中起承上启下的作用，是保证力沿传力路径有效传递的重要组成部分。因此，对桩基承台的受力机理及其承载力问题的研究具有重要的理论意义和工程意义。目前，关于两桩承台的设计，设计人员尚未达成共识。以重庆市巴南区某办公楼为例，根据柱下两桩承台的受力特点，介绍了柱下两桩承台的承载力设计方法和步骤，提出柱下两桩承台宜按深受弯构件设计，为设计、施工人员熟练掌握桩基承台计算方法提供参考。［关键词］办公楼; 桩基; 两桩承台; 深梁中图分类号：TU473.1+2 文献标识码：A 文章编号：1002-848X(2013)22-0077-03Design method of two-pile cap under the columnTang Haiyan1, Zhang Haitao2（1 College of Engineering and Technology, Southwest University, Chongqing 400715, China; 2 Chongqing Industrial School, Chongqing 400060, China）Abstract: Piles cap is an important load-transferring part of pile foundations. It possesses important theoretic and engineering value to make a thorough research on the mechanic performance of piles cap. At present, designers have not reached a consensus about the design of two-pile cap. Taking the office building of Banan District in Chongqing as an example, acoording to the mechanical characteristics of two-pile cap under column, the design method and process are introduced . It suggests that two-pile cap under column should be designed as deep flexural members, which provides reference for designers or constructers to obtain a skilled calculation method.Keywords: office building; pile foundation; two-pile cap; deep beam作者简介：唐海燕，硕士，高级工程师，Email:tangtang1300@21cn.com。参考文献［1］ACI 318-02 Building code requirements for structural concrete and commentary［S］. USA：American Concrete Institute, 2002.［2］JGJ 94—2008 建筑桩基技术规范［S］. 北京：中国建筑工业出版社，2008.［3］GB 50010—2010 混凝土结构设计规范［S］. 北京：中国建筑工业出版社，2011.［4］过超,龚维明,卢波,等. 两桩厚承台的承载力设计［J］.建筑科学与工程学报，2008, 25(3):87-91.［5］李平先,丁自强,郭进军. 钢筋混凝土短梁受剪承载力的计算方法［J］.建筑结构,2002,32(12)：39-41.
