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为研究污水处理厂基坑稳定性,以七顶山污水处理厂建设工程为例,进行七顶山污水处理厂地基承载力验算、最终沉降量计算以及软弱下卧层验算。利用ADINA分析软件,本构关系采用Mohr-Coulomb模型,考虑不同模型接触与初始地应力等因素,按基坑实际情况建立有限元模型。对基坑周边位移变化规律以及开挖变形因素进行模拟分析,总结出基坑稳定性相关规律,为污水处理厂基坑稳定性施工提供参考价值。
In order to study the stability of foundation pit of sewage treatment plant, taking Qidingshan WWTP construction project as an example, the checking calculation of foundation bearing capacity, the calculation of final settlement and the calculation of weak sub-layer are carried out. Using ADINA analysis software, the Mohr-Coulomb model is used for the constitutive relationship, and the finite element model is established according to the actual conditions of the foundation pit by considering the contact of different models and initial stress. The rule of the displacement around the foundation pit and the deformation factors of the excavation are simulated and analyzed, and the law of the stability of the foundation pit is concluded, which provides a reference value for the stability construction of the foundation pit of the sewage treatment plant.