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前言 由大面积填土造成穿过压缩土层的桩基础出现负摩擦附加荷载甚至引起建筑物破坏的经验教训早已引起国内外工程界的重视。国内、外的一些技术规范、标准对此都作出了有关规定。交通部JTJ222-83规范第2.2.6条明确规定在桩台附近地面有大面积堆载时,在桩基设计中宜考虑作用于桩侧表面负摩擦力的影响。上海地区可压缩土层较厚,
Introduction The lessons learned from the negative frictional additional load and even the destruction of buildings caused by large-area filling of the pile foundation that has passed through the compression soil have drawn great attention from the engineering circles at home and abroad. Some domestic and foreign technical specifications, standards have made the relevant provisions. Article 2.2.6 of JTJ222-83 of the Ministry of Communications clearly stipulates that when there is a large area of land near the pile platform, the effect of negative friction acting on the pile side surface should be considered in pile foundation design. Shanghai compressible soil thicker,