多哈新港挖入式港池防渗墙止水帷幕效果研究

Research on Effect of Cut-off Curtain of Diaphragm Wall in Dredged-in Harbor Basin of Doha New Port

基坑止降水对基坑的稳定具有重要作用,尤其是超大港池基坑。本文依托卡塔尔多哈新港项目,介绍港池基坑防渗墙构造,通过有限元数值模拟对四个工况的防渗墙的设置分析其防渗墙止水帷幕的截水效果,并进行现场水位观测进行验证。为后期类似项目尤其是国内建设企业在国外如中东地区的相关投资建设项目提供参考,并产生良好的经济,社会效益。

The dewatering and cut-off of foundation pit play an important role in the stabilization of foundation pit,especially for ultra-large foundation pit of harbor basin.An introduction to the diaphragm wall of foundation pit is made based on Doha new port project in Qatar,and the effect of cut-off curtain of diaphragm wall under four working conditions is analyzed by using finite element numerical simulation,which is also verified according to the result of field water level measurement.The analysis results will serve as a reference for similar projects,especially the Middle East projects invested by Chinese construction enterprises in the future,create economic and social benefit.