砂土地基重力式码头沉降研究

Study on settlement of gravity wharf on sandy foundation

码头地基沉降量计算中修正系数往往需要按经验选取或由现场试验确定。科特迪瓦阿比让港扩建项目为建于潟湖沉积地基上的沉箱重力式码头项目,尚无该地区的地基沉降计算经验系数,选取其中一个断面进行砂土地基重力式码头沉降研究。在建设过程中收集了从沉箱安装到工后营运1.5 a的沉降实测数据,通过实测沉降数据回归拟合,得到规范公式法计算的修正系数。研究成果可为类似工程设计与施工提供参考。

In the calculation of quay foundation settlement,the correction coefficient should be confirmed by experience or determined by field tests.The expansion project of the Abidjan Port in Cote d′Ivoire is a caisson gravity quay constructed on the sedimentary foundation of a lagoon,where no experience coefficient was available.Settlement data from the beginning of construction until one and a half years after operation were collected.Through regression fitting of the settlement data,the correction coefficient calculated by the standard formula method was obtained.The research results can be referenced by similar projects in terms of both design and construction.