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一、前言日本有较厚的软弱、复杂的冲积层,即软弱地基。在普通的桩基设计中很多情况需要研究负摩擦力。目前大直径桩也很普遍.就是在不少设计中想用一根柱子下面布置一根桩来得到相当大的承载力,不过从承载力式设计意图出发采用群桩设计也很多,群桩中的各桩与同一直径的单桩相比,能减少负摩擦力.然而其推算方法如在“建筑基础构造设计规范、同解说”(以下简称规范)中所示的那样比较费事。
I. INTRODUCTION Japan has a relatively weak, complex alluvium, which is a weak foundation. In the common pile foundation design, many situations need to study the negative friction force. At present, large-diameter piles are also common. In many designs, it is desirable to use a pillar to arrange a pile to obtain considerable bearing capacity. However, there are many groups of piles designed from the perspective of bearing capacity design. Compared with a single pile of the same diameter, each pile can reduce the negative friction force. However, the method of calculation is more complicated than that shown in the “Design Standards for Building Foundation Design and Interpretation” (hereinafter referred to as the specification).