控制工后沉降条件下堆载预压地基处理参数的优化

Optimization of treatment parameters by surcharge preloading under the controlling condition of post-construction settlement

在打设排水板的堆载预压地基处理中,当施工工期受限时,排水板间距和堆载厚度是影响地基处理效果的两大主要因素,需进行工程设计优化,不仅应满足地基处理要求,且尽可能降低工程造价。以上海南汇某陆域地基处理工程为例,以工后沉降为控制条件,以经济效益为目标,采用Matlab编程对排水板间距和堆载厚度进行优化设计。该方法可考虑各种可能的参数组合,高效可靠,便于应用,不仅达到了设计要求,而且可获得更好的经济效益。

When the drainboards are used in preloading ground treatment with surcharge and the construction period is limited,the spacing of drainboards and the surcharge thickness are the two main factors affecting the effect of treatment.It is necessary to optimize the engineering design to meet the requirements of ground treatment,and reduce the project cost as much as possible.In this paper,taking a ground treatment project in Nanhui of Shanghai as the example,we carried out the optimization of the spacing of drainboards and the surcharge thickness using Matlab programming,with the post-construction settlement as the controlling condition and the economic benefits as the goal.The method can consider all kinds of possible parameter combinations,and it's efficient,reliable and convenient for application.It meets the design requirements,and achieves better economic benefits.