柱下独立承台新形式的探讨

New type of pile caps for individual columns

常用柱下独立承台尺寸大、传力不明确、材料用量多。本文建议一种新型的空腹式承台方案，并对此进行了分析计算和可行性研究。用ALGOR FEA有限元计算程序分析了其破坏模型和应力分布情况，利用极限平衡原理，建立了空腹式承台的承载力计算公式。得出的公式简单，易于设计中应用。

Presents a new type of pile hollow caps from the viewpoint that the current pile caps for individual columns are too big and the transfer path of a column load to a group of individual piles is not cleared by analysing the availability and reliability of the hollow caps， the damage model and stress distributive statement of shell caps with ALGOR FEA Finite Element method programs and the calculating formulas for bearing capacity of the hollow caps formulated using the ultimate equilibrium theory and concludes that the deduced formulas are simple and easy to be used in structural designs．