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一、前言近年来,国内外对桩基的负摩擦问题很重视,是桩基研究的重要课题之一。日本已在规范中对桩基负摩擦力的计算做了明确的规定。我国关于桩基负摩擦的研究工作也已进行了一些现场试验和室内模型试验。据挪威和日本的研究资料,穿过15米填砂层和其下40米粘土层、直径为50厘米的钢桩,作用在其上的负摩擦力竟高达300吨,
I. INTRODUCTION In recent years, domestic and foreign countries have attached great importance to the problem of negative friction of pile foundations. It is one of the important topics for the study of pile foundations. Japan has made explicit regulations on the calculation of the negative friction of piles in the code. In China, some field tests and indoor model tests have also been carried out on the study of the negative friction of the pile foundation. According to the research data of Norway and Japan, the negative friction acting on the 15m sand-filled layer and the 40m-thick clay layer with a diameter of 50cm was as high as 300 tons.