地下水位循环变化中下卧粉砂层地下车库抗浮数值模拟

沿海多降雨地区,需要考虑地下水位线变化过程中对于地下车库的影响.当下卧砂质粉土层或砂层,地下水位线的变化对车库底板的影响更大.目前为止,在国内,对于考虑地下水位线循环变化过程中,下卧粉砂层地下车库抗浮数值模拟的研究非常少.利用有限元分析方法,以山东东营市某地下车库为例,建立了水位循环变化对车库影响的计算模型.通过计算分析得到地下水位线变化过程中,底板和承台的应力变化、沉降变化及两者接触处的受力情况.最后,提出了减少地下水位线循环变化对地下车库影响的建议.

Numerical Simulation of Anti-floating for Underground Garage on the Sandy Powder Sand in the Process of Underground Water Level Cycle Change

In coastal rainfall area, it is required to consider the impact of underground water level changing on underground garage. The influence on the garage floor will be greater when exists sandy powder soil or sand. So far, when the cycle change of underground water level is considered, the domestic study about numerical simulation of underground garage anti-floating above the sandy powder sand is little. By way of finite element analysis method, calculation model of impact on the garage due to water circulation changing was set up by taking an underground garage of Dongying City in Shandong Province as example. Based on results of calculation and analysis, the stress changes of bottom and caps, settlement changes and the force of the contact point in the process of the underground water level change were gained. In the end, the suggestions were given to reduce effects of underground water level cycle changing on the underground garage.