真空预压法加固吹填土地基的仿真分析方法

Simulation analysis method of vacuum preloading method for reinforcement of dredger fills soil foundation

采用疏浚工程中产生的疏浚土进行吹填造陆是目前最经济、环保的方法之一。但由于吹填土本身具有含水率高、渗透性差、承载力低等特点,陆域在使用前通常运用真空预压方法加固,其加固过程包括抽真空前期和抽真空加固期。以连云港某吹填土加固工程为依托,运用有限元仿真技术对其加固过程进行模拟,通过与现场实测结果对比,明确了分析方法的准确性。

Using dredger fills soil to reclaim land is one of the most economical and environmental protection methods at present.Due to the high water content,poor permeability and low bearing capacity of dredger fills soil,vacuum preloading method is usually used to reinforce the land before use,and its reinforcement process includes the pre vacuuming period and the vacuum reinforcement period.Based on a dredger fills soil reinforcement project in Lianyungang,the finite element simulation technology is used to simulate the whole reinforcement process.The accuracy of the analysis method is confirmed by comparing with the field measurement results.