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介绍了越南某高速公路砂井地基处理的造价优化方法。根据Barron的扩充解对该砂井排水固结地基处理进行固结度计算,以工后沉降固结度为约束条件,以造价为优化目标,对10 000 m2矩形地基进行了砂井地基处理的优化设计。结合实际,考虑了砂井不同直径对造价的影响,得出了固结度控制下砂井直径与砂井间距之间的线性关系,并结合造价三维分布特性,采用三维等势投影技术,确定了最优的砂井地基处理分布方案。高速公路砂井地基处理方法优化国内研究不多,研究成果可以为以后类似工程提供参考。
The cost optimization method of sand shaft foundation treatment of a highway in Vietnam is introduced. According to Barron’s extended solution, the degree of consolidation of sand-well drainage consolidation foundation is calculated, and the post-construction settlement consolidation degree is used as the constraint condition, and the cost is optimized as the target of sand foundation treatment of 10 000 m2 rectangular foundation Optimize design. According to the actual situation, considering the influence of different diameter of sand well on the cost, the linear relationship between the diameter of the sand well and the distance between the sand wells under the control of the consolidation degree is obtained. Based on the three-dimensional distribution characteristic of the cost and the 3D equipotential projection technique, Optimal sand well foundation treatment distribution plan. So far, there are few studies on the optimization of sand bed foundation treatment in China. The research results can provide reference for similar projects in the future.