An integrated deep water foundation and its construction method

Abstract

This application relates to an integrated deep-water foundation and its construction method, and relates to the technical field of bridge deep-water foundations, including multiple suction single wells, multiple steel pipe columns, multiple bored piles and caps. The steel casing used for bored pile construction, and the steel pipe column and the single suction well are an integrated structure prepared in advance. After the drainage operation of the single suction well, the steel pipe column and the single suction well can sink to the design elevation. There is no need to erect a large jacket platform and carry out processes such as hoisting, turning over, and sinking of steel casings in the marine environment with harsh swell conditions, and the suction well base and steel pipe columns can participate in the stress of the deep water foundation during the bridge use stage Among them, the free length of the single pile can be effectively reduced, and the horizontal and vertical bearing capacity of the pile body can be improved. Therefore, the application can not only reduce the construction risk, difficulty and cost, but also shorten the construction period and improve the horizontal bearing capacity and vertical bearing capacity of the pile body.

Description

technical field [0001] The application relates to the technical field of deep-water foundations of bridges, in particular to an integrated deep-water foundation and a construction method thereof. Background technique [0002] With the rapid development of my country's transportation infrastructure, the construction of cross-sea bridge projects is gradually advancing from the offshore to the deep sea. There are more and more projects, the scale of the project is getting larger, and the construction environment is becoming more and more complex and diverse. Among them, harsh marine environments such as hurricanes, deep water, rapids, strong swells, and deep overburden will bring great challenges to the construction of cross-sea bridges, especially in the design and construction technology of bridge deep water foundations. [0003] In related technologies, the pile group foundation of high pile caps is a commonly used form of deep water foundation. Because of its mature constru...

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present application provides an integrated deep-water foundation and its construction method to solve the problem of steel casing hoisting, turning over, and sinking in the window period with good wind and wave conditions in the harsh marine environment in the related technology. At the same time, it is necessary to erect a large-scale jacket platform for steel casing positioning, pile foundation drilling, concrete pouring and other processes, and the large-scale pile foundation leads to the long construction period and high construction cost of the entire deep-water foundation

Images