Air floating type deepwater setting foundation and construction method thereof

Abstract

The invention relates to an air floating type deepwater setting foundation and a construction method thereof, and relates to the technical field of bridge deepwater foundations. The device comprises awell chamber, a tubular column, a supporting rib, a sealing bottom and a bearing platform, wherein a plurality of well chambers with regular polygonal or circular cross sections form a well seat withpolygonal cross sections; a tubular column with the cross section being a circular ring is arranged in the center of each well chamber in a penetrating mode, the well chambers are connected with thetubular columns through supporting ribs, a post-cast strip and a drainage hole are formed in the pipe wall of the lower portion of each tubular column, and it is guaranteed that the whole well chamberspace is filled with bottom sealing concrete during pouring. Due to the fact that the upper portion of the pipe column is of the double-wall steel shell concrete structure and concrete in a double-wall steel shell is poured on site, the lower portion of the foundation is of the concrete structure during floating transportation, the upper portion of the foundation is of the hollow steel shell structure, and stability of the foundation during floating transportation is improved and draft of the foundation is reduced. The air floating type deepwater setting foundation has the advantages that thescale is smaller, the construction difficulty and risk are lower, the construction quality is more reliable, the construction period is shorter, the structural stress is more reasonable, and the economical efficiency is better.

Description

technical field [0001] The application relates to the technical field of deep-water foundations of bridges, in particular to an air-floating deep-water foundation and a construction method thereof. Background technique [0002] As my country's sea-crossing bridge projects continue to advance from offshore to deep sea, the design and construction of deep-water foundations have become the key factors to control the construction period, cost and risk of the entire bridge project. [0003] During the construction process of the deep-water foundation of cross-sea bridges, not only need to bear the huge horizontal force generated by the external environment (hydrology, meteorology, ship collision, etc.), but also need to overcome the difficulties of poor foundation construction conditions and short effective working time at sea. Therefore, in order to solve the above problems, a deep-water setting foundation with integrated structure, factory prefabrication, and on-site constructi...

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present application provides an air-floating deep-water foundation and its construction method to solve the problems of increased construction difficulty, increas

Images