半圆体水上起吊拆除施工要点分析

Construction of Lifting and Removing Semicircular Structure above Water

半圆体结构作为海上吹填造陆的挡土与消浪结构,已在工程中得到广泛的使用。而在该结构所吹填形成的岸坡附近进行LNG泊位施工时,由于取水口管涵需联通海水与陆地相关LNG汽化设备,且结构所处水深较深,在由半圆体结构所吹填而成的陆域岸坡处,必须将已完成建设的半圆体结构岸线进行拆除,为取水口管涵施工提供条件。而相关半圆体拆除施工尚无较为丰富的施工经验及参考数据,因此,如何安全有效的完成半圆体水上起吊拆除施工便成为LNG泊位取水口管涵施工的重中之重。

As a wave-dissipation and soil-retaining structure, semicircular structure has been widely used in sea reclamation projects. If LNG terminal is arranged close to the bank slope dredged and filled in the construction of semicircular structure, the completed semicircular structure shoreline must be removed from the above bank slope because the pipe culvert to water intake is located in deep water and connected to LNG vaporizing equipment in sea and on land. By now, there is not rich experience or data on semicircular structure removing construction. Thus, how to safely and effectively lift and remove semicircular structure above water is regarded as the most important part of pipe culvert construction of LNG terminal water intake project.