柔性垫层在复合地基中的作用及其试验研究分析

通过分析复合地基形成条件及桩土共同作用机理,探讨柔性垫层在复合地基中设置的必要性和调节作用,并通过不同材料、不同厚度的垫层的现场试验研究分析,得出了一些有益的结论。在复合地基中,在桩顶与刚性基础之间设置一定厚度的柔性垫层,可以调整桩土应力比,充分发挥桩间土的承载能力,减少基础底面的应力集中。从而为复合地基的设计、施工提供科学依据和技术支撑。

Study on the Adjusting Function of the Flexible Pad Cushion of the Composite Foundation Through Test Analyzing

The necessary and adjusting function of the flexible pad cushion are studied according to the forming condition and the bearing load characteristic of the composite foundation in this paper.And some availability conclusions are obtained through test analyzing of the flexible pad cushion of different material and different thickness.It may adjust the stress ratio of pile and soil,and exert sufficiency the bearing load of soil,and decrease the concentrating of the stress through setting the flexible pad cushion between the rigid foundation and pile body.It is helpful and provides the basis of science and technology for the design and construction of the composite foundation.