Suspended casting suspended basket steel tube concrete tripod of bridge
A steel tube concrete and tripod technology, applied in the field of tripods, can solve the problems of large forward friction resistance, large amount of steel consumption, time-consuming, etc., and achieve the effects of improving compressive strength, saving steel and reducing resistance
Inactive Publication Date: 2009-07-29
CHINA RAILWAY 21TH BUREAU GROUP +2
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Problems solved by technology
Although cantilever construction can be carried out, the amount of steel used is large, and the section of some rods is not controlled by the stress it bears, but is controlled according to the structural requirements, resulting in waste, large forward friction resistance, labor-intensive and time-consuming
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[0020] The present invention will be further described below in conjunction with the accompanying drawings and typical embodiments, as shown in Figures 1-8.
[0021] As shown in FIGS. 1 and 6 , the left side of the middle splint 14 is fixedly connected with the H-shaped connecting piece 18 through the rear compression bar 17 . The H-shaped connecting piece 18 is fixedly connected with the web and ribbed plate 19, and is embedded and fixedly connected with one end of the rear compression bar 17 in a notch type.
[0022] The web ribbed plate 19 is embedded and fixedly connected with one end of the rear compression rod 17 in a notch type.
[0023] As shown in Figures 5 and 7, concrete 35 is poured into the rear compression bar 17 and reinforcement nets 20 are embedded in the concrete at both ends. The other end of the rear compression rod 17 is also embedded and fixedly connected with the H-shaped connector 18 in a notch type.
[0024] The H-shaped connecting piece 18 is fixedl...
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The invention relates to a concrete-filled steel tubular tripod for a bridge suspension casting movable scaffolding, in particular to a tripod in an upper structural cantilever construction hanging scaffolding of a bridge. The tripod comprises a middle plywood and an upright post in the middle, a back pull rod, a back plywood and a back strut at the left, and a front pull rod, a front plywood and a front strut at the right. The tripod is characterized in that the top end of the upright post is provided with a capped pipe, and concrete is injected in the front strut, the back strut and the upright post; and two ends of the front strut and the back strut are provided with an H-shaped connector and a sealing plate respectively, the lower end of the upright post is provided with an H-shaped connector and a sealing plate, the lower part of the middle plywood is provided with a front connecting plate, and the lower part of the back plywood is provided with a back connecting plate. Therefore, when the concrete in steel pipes is restrained by the walls of the steel pipes, the concrete is in a three-dimensional stress state, the compressive strength is improved by 1.7 times, and the concrete is used for replacing steel so as to save large amount of expense; and the lower parts of the middle plywood and the back plywood are provided with rollers to form rolling forward, so the resistance is reduced, the moving labor hour is saved by 50 percent, and the steel is also saved by 60 percent.
Description
technical field [0001] The invention relates to a steel pipe concrete tripod with hanging basket for bridge suspension, in particular to the tripod in the hanging basket for cantilever construction of the bridge superstructure. Background technique [0002] At present, highway bridges and railway bridges are developing towards long-span directions, but due to the limitation of hoisting capacity, prefabricated frame setting beams are difficult to realize, and prestressed concrete continuous beams and steel constitute the development trend. There are various construction methods for prestressed concrete continuous beams and steel structures. Cantilever pouring is the only method with the widest scope of application and the most cost-effective, and has been widely used. The frame forms used for cantilever casting include rhombus hanging basket, parabolic hanging basket, guide beam hanging basket, etc., but they all have shortcomings. The triangular hanging basket has been favor...
Claims
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IPC IPC(8): E01D21/10
Inventor 马建会赵春峰张超民苏红岭田占良陈卫高善一唐述林赵彦旭王亮
Owner CHINA RAILWAY 21TH BUREAU GROUP