有限单元法在堆场堆载预压处理中的应用

Application of FEM on Preloading Treatment of Storage Yard

分析了堆载预压加固原理,以连云港港旗台港区的陆域形成与堆载预压为例,建立有限元模型,分析吹填造地工程地基沉降在时间和空间上的分布规律。计算结果表明,有限单元法可以有效地模拟复杂边界条件,克服了传统计算方法仅考虑一维沉降及固结,无法精确解决复杂边界条件的问题。根据有限元模型得到的沿空间分布的沉降数据,调整各个区域的预压堆载布置及卸载量,可解决堆场对不均匀沉降及坡降的控制要求。

Based on the principle of preloading reinforcement,taking the land formation and preloading of Gangqitai port area of Lianyungang as an example,the finite element model is established to analyze the distribution law of dredged fill foundation settlement in time and space.The results show that the finite element method can simulate the complex boundary conditions effectively,and overcome the traditional calculation method which only considers one-dimensional settlement and consolidation,and can not solve the complex boundary conditions accurately.According to the settlement data of spatial distribution obtained from the finite element model,the preloading arrangement and unloading amount of each area can be adjusted to solve the control requirements of uneven settlement and slope of the storage yard.