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一、引言砂井是工程界常用的加速饱和软粘土地基固结的有效措施。真空预压、堆载预压和强夯等方法加固饱和软粘土地基时都与砂井排水结台使用。这些联合加固方法的成败很大程度上取决于砂井设计正确与否。砂井设计目前一般以理想井和等垂直应变条件下 Barron 解作为理论依据,这样忽略了应力重分布、井边涂抹及井阻对砂井地基固结的影响。
I. Introduction Sand wells are commonly used in engineering to accelerate the consolidation of saturated soft clay ground effective measures. Vacuum preloading, preloading and dynamic compaction and other methods to consolidate the saturated soft clay ground with sand drainage drainage Taiwan use. The success or failure of these consolidation methods depends very much on whether the well design is correct or not. At present, the Barron solution is generally based on Barron solution under ideal conditions such as ideal well and vertical strain, which neglects the influence of stress redistribution, well edge smear and well blocking on sand consolidation.