东非某项目砂袋围堰上方浆砌片石挡墙沉降深度分析

Depth Analysis of Settlement of Grouted Stone Retaining Wall Above Sandbag Cofferdam

东非某项目RORO泊位码头为砂袋围堰结构吹填成陆,与后方陆域采用过渡板的形式衔接,过渡板下方为浆砌片石挡墙。码头交付使用后,业主在过渡板上多次堆放钢卷,其载重超过设计荷载4倍,挡墙出现沉降,在移开钢卷约9个月后,挡墙沉降稳定,无法吊起过渡板进行沉降调节,最终决定RORO堆场靠近码头区采用3%的坡度和后方陆域连接,但运营阶段的过渡板多处出现表面混凝土破损,且修复后仍存在多次破坏,码头表观质量影响较大。

RORO berth of a project in East Africa is constructed with sandbag cofferdam structure and is then filled into the land,which is connected with the land area in the rearward in the form of a transition plate.Below the transition plate is a slurry chip retaining wall.After the terminal after consigning is put into use,the owner stacks steel coils on the transition plate many times,with the load more than four times the design load.As a result,the settlement of the retaining wall appears,and for about nine months after steel coil removal,the settlement of the retaining wall is stable.Due to the regulation of the inability to lift the transition plate settlement,3%of the slope and district⁃port joints are eventually employed near the pier USES of the RORO yard.However,the surface concrete of the transition plate in the operation stage is damaged in many places,and great damage still exists after repair,which has a great influence on the apparent quality of the wharf.