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近些年来,随着我国经济的快速发展,沿海城市的建设也在如火如荼地进行,相应的软土地基的处理方式也越来越多。为了降低地基的破坏面,往往采用外墙式的加固体。基于此种方法,在混凝土量一定的情况下,在墙的内侧再布设疏桩方案,即桩间距在4~6倍桩径。疏桩方案的特点在于各桩之间独立,不会对软黏土产生挤土效应,不会破坏软黏土的结构而降低承载能力。在环境为软黏土的疏桩方案限定下,确定了五种试验方案,采用模型试验研究了此种复合桩基的刚度分配规律,观察桩间距和桩长两个因素对地基承载力和不均匀沉降的影响。
In recent years, with the rapid economic development in our country, the construction of coastal cities is also in full swing. Corresponding treatment methods of soft ground are also increasing. In order to reduce the destruction of the foundation, often using external reinforcement. Based on this method, in the case of a certain amount of concrete in the wall inside the layout of the sparse pile plan, that pile spacing in the 4 to 6 times the diameter. Sparse piles program is characterized by the independence of the piles, will not produce squeeze effect of soft clay, will not undermine the structure of soft clay and reduce the carrying capacity. Under the limitation of the soft clay soil thinning scheme, five test schemes were determined. The stiffness distribution rules of the composite pile foundation were studied by model tests. The effects of pile spacing and pile length on the bearing capacity and unevenness of foundation Effect of settlement.