柏傲冬       （深圳市南山区工程质量监督站 518066）

        柏幸生       （深圳市南山区广告公司）

 

[提要]  承台类似于深梁，应按深梁设计。抗冲切是抗剪切的一个特例，两者的计算可以统一。在设计承台时，应考虑外力在承台内扩散的有利作用。本文提出了相应的计算公式，它们与规范及现行的计算方法一致，但均较节约，特别是在跨厚比较小时更为显著。
[关键词]  承台  扩散作用 抗冲切 抗剪切 抗弯 深梁 剪跨比

Pile cap is similar to deep beam. It can be designed by the deep beam theory. When designing the pile cap, we must consider the useful effect of the external force diffusing in the pile cap. Therefore, we bring up the formulae which are accord with the code and the present calculating methods. The formulae are more economical and stabler espcially when the span-to-deepth ratio is smaller.
Keywords: pile cap; diffusion effect; punching shear; bend; deep beam; shear-to-span ratio