大量的试验与研究结果均表明,梁式模型法适用于多桩薄承台设计,对于厚承台并不适用。通过对国内外桩基承台试验数据统计,确定空间桁架方法和梁式模型方法应用于承台的界限,也即如何定义“薄”承台和“厚”承台;并且通过对试验数据的数学统计,考虑承台底层纵筋对抗剪和抗冲切的有利作用,对梁式模型法的冲切和剪切公式进行了修正。 A large number of experiments and research results show that the beam model method is suitable for the design of multi-pile thin caps, which is not suitable for thick caps. Through the statistics of test data of pile cap at home and abroad, the methods of space truss method and beam model method are applied to the limit of cap, that is, how to define “thin” cap and “thick” cap; Mathematical statistics of the test data, considering the favorable effect of the longitudinal reinforcement of the cap on the shearing and punching cutting, amending the punching and shearing formulas of the beam model method.