›› 2013, Vol. 27 ›› Issue (1): 49-51.

• 工程实录 • 上一篇    下一篇

桩基础承台设计荷载取值探讨

张立丽   

  1. (广东省地质建设工程集团公司,广州 510080)
  • 收稿日期:2012-07-11 出版日期:2013-02-28 发布日期:2013-03-05
  • 作者简介:张立丽(1981-),女,汉,河北唐山,大学本科,学士学位,工程师,研究方向为岩土工程勘察设计。

Discussions on the Pile Cap Design

ZHANG Lili   

  1. (Guangdong Geological & Construction Engineering Group Co. Ltd., Guangzhou, 510080)
  • Received:2012-07-11 Online:2013-02-28 Published:2013-03-05

摘要: 《建筑桩基技术规范》(JGJ94-2008)关于验算承台受弯、受剪和受冲切荷载均给出了相应的计算公式,但其计算荷载取值偏于不安全。通过理论推导,根据承台底地基土承受的荷载不同,得出相应基桩承受的设计荷载计算公式,通过算例说明规范计算方法的不足,进而分别提出承台受弯、受剪和受冲切荷载的计算公式,可供设计、科研人员参考。

关键词: 承台, 浅基础, 抗弯, 抗剪, 抗冲切

Abstract: The current design specifications on pile foundations (JGJ94-2008) define the bending, shear and punching design procedures for the pile caps. Throughout the derivations of four different loading conditions at the pile cap, this paper concluded that the current code requirement is underestimate the load and therefore is unsafe. The improved formulas for the bending, shear and punching failure modes are proposed.

Key words: Pile Caps, Shallow Foundation, Bending Capacity, Shear Capacity, Punching Capacity