武汉地铁车站深基坑监测项目选择研究

Item Selection for Deep Foundation Pit Monitoring in Wuhan Metro Station

在地铁深基坑施工中,通过监测可以为安全事故预防和控制提供信息。针对监测规范中对于监测项目选择规定较为笼统,未考虑实际工况的问题,有必要对地铁深基坑施工监测项目选择进行研究。结合武汉地区工况运用监测案例调研、监测规范比较和专家调查等方法对各个监测项目重要性进行量化,确定武汉地铁监测项目重要程度的优先顺序,结合相关领域专家的施工经验和计算结果进行对比分析。为使规范在武汉地区执行更加有针对性,建议武汉地区地方标准涉及监测项目选择的规定进行调整,为武汉地区地铁深基坑监测方案制定提供参考。

Useful information for the prevention and control of accidents can be provided by monitoring for deep foundation pit construction of metro. Due to the regulation related to monitoring items selecting lacking of focalization,the actual condition risk is not considered in our country. Firstly,three methods（i.e. the investigation of monitoring cases,the comparison of monitoring codes and experts investigation）were applied to calculate quantitatively the priority of monitoring items considering with Wuhan metro station,which was aimed at determining the importance of priorities for monitoring items. Secondly,the selection of deep foundation pit monitoring items in Wuhan metro station was re-discussed based on the former results and expertise. Finally,to make the specification perform more targeted,Wuhan area criteria related to monitoring items selecting should be adjusted as a reference to decision-maker for the selection of deep foundation pit monitoring items in Wuhan metro station.