土工格室处治基床病害的机理与实例数值分析

采用三维薄膜单元模拟筋材,研究不同筋材模量对加筋效果的影响。数值模拟表明,基床加入格室后,沉降明显降低,符合测试结果的规律。与现场试验相比,利用数值分析不仅得到宏观的沉降加筋效果,还能分析加筋材料参数的变化和铺设在基床不同位置的效果来研究格室处治基床的规律,从而可进一步探讨格室加筋的机制。格室的存在,有效减少了基床的侧向变形,改善了基床的附加应力分布,格室模量越高,加筋效果越明显。

Mechanism of Foundation Failure Treatment Using Geocell and Numerical Analysis Based on Example

The influence of different reinforcement modulus is studied on reinforcing effect based on simulation of reinforcing material using 3D membrane element.It is indicated from numerical simulation that foundation settlement largely reduces after reinforced with geocell,which is in accordance with the law of test result.Compared to site test,numerical analysis can not only obtain macro reinforcing effect,but also be able to analyze the changes of reinforcing material parameters and the effect of material in different positions to study the rule of foundation treatment using geocell and further discuss the mechanism of geocell reinforcement.Geocell effectively reduces lateral deformation of foundation and improves additional stress distribution.The higher geocell modulus leads to more significant reinforcing effect.