Stepped open caisson foundation and construction method thereof
A step-type caisson technology, applied in infrastructure engineering, caissons, bridge parts, etc., can solve the problems of cumbersome construction and high maintenance costs, achieve good protection effects, avoid tedious and complicated work, and achieve high economic benefits
Inactive Publication Date: 2020-12-29
CHINA MAJOR BRIDGE ENERGINEERING
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[0006] The embodiment of the present invention provides a stepped caisson foundation and its construction method to solve the problems in the related art that in the process of bridge construction, protective measures are constructed separately, the construction is cumbersome and the later maintenance cost is high
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[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0036] The embodiment of the present invention provides a stepped caisson foundation and a construction method thereof, which can solve the problems in the related art that in the process of bridge construction, protective measures are constructed separately, the construction is cumbersome and the later maintenance cost is high.
[0037] see ...
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The invention relates to a stepped open caisson foundation and a construction method thereof. The stepped open caisson foundation comprises an upper open caisson, a lower open caisson and a buffer part, wherein the lower open caisson is used for being buried below a riverbed and located below the upper open caisson, and the lower open caisson extends out for a preset length in the horizontal direction relative to the upper open caisson; and the buffer part is used for weakening the lower submersible flow and is positioned at the joint of the upper open caisson and the lower open caisson. According to the stepped open caisson foundation and the construction method thereof, the protection effect can also be achieved without independently building protection measures around a pier, later tedious and complex work and high repair and maintenance cost are avoided, and higher economic benefits are achieved.
Description
technical field [0001] The invention relates to the technical field of partial erosion protection of bridge piers, in particular to a stepped caisson foundation and a construction method thereof. Background technique [0002] At present, due to the water blocking effect of the pier, the water flow in front of the pier flows vertically downwards and forms a horseshoe vortex structure near the bottom surface, and the horseshoe vortex develops to both sides to form a vortex system around the pier body, causing sediment on the water-facing side of the pier Start-up and horizontal and vertical transport, and then form local scour pits around the pier foundation. Local scour around pier foundations is one of the most important causes of reduced safety or structural failure of bridge structures. [0003] In related technologies, the scour protection measures for bridge piers are divided into two categories: active protection and passive protection. The former is to weaken the impa...
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IPC IPC(8): E02D27/52E02D23/00E01D19/02
CPCE01D19/02E02D23/00E02D27/52
Inventor 胡勇陈述闫杰超秦顺全高宗余张胡赵维阳胡鹏刘燃马晨煜梅大鹏陆杨徐华闻云呈
Owner CHINA MAJOR BRIDGE ENERGINEERING