排水板堆载预压加固软基的固结沉降数值模拟

发布时间：2018-06-13 00:30

本文选题：软基处理 + 塑料排水板　；参考：《地下空间与工程学报》2014年S2期

【摘要】：为了研究数值模拟方法在排水板堆载预压加固软基的固结沉降计算中的实用性和有效性。结合某填海造地道路地基处理工程,探讨了塑料排水板堆载预压法处理软基的固结机理。基于有限元分析软件ABAQUS,采用扩展的Drucker-Prager本构模型,建立塑料排水板堆载预压法处理软基的固结沉降有限元计算模型,考虑分级加载情况,对加固软基的固结沉降过程进行数值模拟计算,并将计算结果与实测数据进行了对比分析。研究结果表明:软基固结沉降的数值模拟曲线与实测曲线变化趋势基本一致,能够较好地模拟各级堆载预压过程中的软基沉降速率变化规律;模拟曲线比实测曲线收敛更快,计算值与实测值吻合较好,可为类似工程提供借鉴。
[Abstract]:In order to study the practicability and effectiveness of numerical simulation method in the consolidation settlement calculation of soft foundation strengthened by preloading of drainage slab. In this paper, the consolidation mechanism of soft foundation treated with plastic drainage plate surcharge preloading method is discussed in combination with a reclamation road foundation treatment project. Based on the finite element analysis software Abaqus and using the extended Drucker-Prager constitutive model, the finite element calculation model of consolidation settlement of soft foundation is established by preloading method of plastic drainage board. The process of consolidation and settlement of reinforced soft foundation is simulated and compared with the measured data. The results show that the numerical simulation curve of the consolidation settlement of soft foundation is basically consistent with the measured curve, which can well simulate the variation law of the settlement rate of soft foundation during the preloading process, and the simulation curve converges faster than the measured curve. The calculated values are in good agreement with the measured values, which can be used for reference in similar projects.
【作者单位】：中南大学土木工程学院;广州市建筑材料工业研究有限公司;
【分类号】：U416.1

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