淤泥质海岸取水口水下结构施工技术

Construction technology of underwater structure ofwater intakes on silty coast

取水口结构因自身取水功能的要求,需要水下结构所处的位置水深较深,在施工水域受限、水下视线不清的淤泥质海岸环境下,必须结合施工地质情况及周边类似工程的施工经验,对方案选取和施工工艺进行针对性地优化。通过本工程的现场实践及各项数据总结,对水下沉桩、钢托架水下焊接、预制横梁及桩芯水下施工、预制管涵水下安装的工艺进行重点把控,并对相关配套的紧前和紧后工序制定必要的关键措施,最终实现取水口水下结构施工的质量可靠和安全受控。

Due to the functions of a water intake structure,its underwater structure has to be located relatively deep in water.In the silty coastal environment with limited construction water area and unclear sight under the water,it is necessary to optimize the scheme selection and the construction technology according to the geological conditions of the construction site and the construction experience in similar projects around.The technology for underwater pile installation,underwater welding of steel brackets,underwater construction of prefabricated beams and pile cores and underwater installation of prefabricated culverts is emphatically controlled by means of field practice and summary of data of the project,and necessary key measures were formulated for relevant supporting pre-tightening and post-tightening procedures.Reliable quality and safety control of the construction of the underwater structure of water intakes have been finally achieved.