堤防工程中堆载预压数值模拟研究

Numerical Simulation Study on Preloading under Pile Load in Embankment Engineering

软土地层具有含水量高、压缩性高、承载力低等特性,因此项目开展前需要对软土进行加固处理以保证足够的承载能力。堆载预压作为软土地基处理方法之一,其工艺简单、加固效果显著等优点,在堤防工程软基处理中得到了广泛的应用。本文以广州南沙某堤防工程项目为例,借助有限元软件建立计算模型,并将数值模拟计算结果与工程实测结果进行了对比,结果表明,两者数据之间变化趋势相一致,拟合度较高。本次研究结果可为今后类似工程提供借鉴。

The soft soil layer has characteristics such as high water content,high compressibility,and low bearing capacity.Therefore,before the project starts,it is necessary to reinforce the soft soil to ensure sufficient bearing capacity.As one of the methods for soft soil foundation treatment,pile loading preloading has been widely used in embankment engineering due to its advantages of simple process and significant reinforcement effect.This article takes a dam engineering project in Nansha,Guangzhou as an example,uses finite element software to establish a calculation model,and compares the numerical simulation results with the engineering measurement results.The results show that the trend of change between the two data is consistent,and the fitting degree is high.The results of this study can provide reference for similar projects in the future.