泡沫混凝土在城市地下建(构)筑物处理中的应用

Application of Foam Concrete in City Underground Building(Structure)

针对建筑密布、管线复杂、场地狭窄的城市核心区老化或报废的地下建(构)筑物处理问题,以实际工程为例,通过理论研究结合现场试验,依据所处理地下建(构)筑物尺寸、场地荷载类型及后期破除要求,确定充填所需材料参数与配比,优化充填工艺流程;利用Midas GTS NX有限元软件,对地铁车站施工及破除地下建(构)筑物的过程进行数值模拟分析,将监测数据与数值模拟结果进行对比,根据监测信息调整现场施工部署,确保工程顺利实施,减少了对周边环境的影响。

Focused on the treatment issue of aging or scrapped underground buildings such as dense buildings,complex pipelines and narrow site,the paper uses the actual project as an example,according to the size of underground buildings,load type and later breaking requirements,determines the material parameters and ratio required for filling through theoretical research and field test,and optimizes the filling process.The software Midas GTS NX is used to simulated and analysed the process of subway station construction and underground buildings removal.The monitoring data are compared with the numerical simulation results,and the construction deployment is adjusted according to the monitoring information to ensure the smooth implementation of the project and reduce the impact on the surrounding environment.