Modular prefabricated high-pier structure based on high strength bolt connection and making method
A technology of high-strength bolts and prefabricated assembly, which is applied in the direction of erecting/assembling bridges, bridge parts, bridges, etc. It can solve problems such as difficulty in ensuring structural integrity and affecting the bearing capacity of bridge piers, so as to speed up construction progress, ensure construction quality, and be easy to control Effect
Inactive Publication Date: 2019-06-07
BEIJING UNIV OF TECH
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Problems solved by technology
The shortcomings of the joints of this prefabricated component make it difficult to ensure the integrity of the structure, which directly affects the bearing capacity of the bridge pier under earthquake action
Method used
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[0040] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0041] like figure 1 As shown, a modular prefabricated high pier structure based on high-strength bolt connection is composed of multi-segment pier bodies assembled in sequence from bottom to top; each segment has a prefabricated four-sided pier body, which is divided into long and wide surfaces. There are two types; the horizontal assembly of the segments is done through the long-side pre-embedded bent steel bars and through the wide-side reserved holes to complete the bolt connection; The holes of the side cover connecting the steel plate realize the bolt connection.
[0042] like Figure 4 As shown, the segment is divided into a long surface 16 and a wide surface 17; the long surface includes, the embedded stiffening plate 2 with roughened surface, the embedded high-strength bolts 4, the embedded longitudinal reinforcement welded with the st...
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The invention discloses a modular prefabricated high-pier structure based on high strength bolt connection and a making method. The structure of the modular prefabricated high-pier structure based onhigh strength bolt connection comprises a prefabricated pier body, a connecting steel plate and a prefabricated bearing platform; each segment of the prefabricated pier body is of a four-face assembled type; the upper and lower end parts of the prefabricated pier body are prefabricated by using high-strength concrete; the pier body comprises a bent-up bar, a high-strength screw rod, a stiffening plate, a tie bar, a longitudinal bar, a hoop and a reserved hole passage which are prefabricated in the pier body; socket and spigot connection in the horizontal direction is finished by using the bent-up bar; connecting steel plates used for finishing vertical connection of each segment are placed between the segments and on the internal and external sides of the prefabricated pier body so that the mounting is finished by using the bent-up bar and the high-strength screw rod; the connection between the prefabricated bearing platform and the first segment of the pier body is finished by the bent-up bar and the high-strength screw rod which are prefabricated in the pier body and the L-shaped connecting steel plates; and the first segment of the pier body is prefabricated by using UHPC. According to the modular prefabricated high-pier structure based on high strength bolt connection, the construction is simple, the hoisting is convenient, and a problem that joint surfaces between the segments are expanded is solved by using the steel plates fixed by the high-strength bolts and mounted between the multiple segments.
Description
technical field [0001] The invention relates to the field of bridge engineering construction, relates to the industrialized design and construction technology of bridges, and in particular designs a modular prefabricated assembly high pier structure based on high-strength bolt connection and a manufacturing method. Background technique [0002] At present, for the substructure of bridges built in mountainous areas, due to the limitation of objective factors such as transportation conditions, on-site construction, hoisting height and weight, prefabricated piers have become the best choice. After the prefabricated components are produced in the factory, they are transported to construction. On site, the components of each segment are hoisted and assembled into a whole. This kind of bridge pier can not only meet the bearing capacity required by the structure, but also help quality assurance, save labor, reduce construction pollution, and reduce the requirements for construction ...
Claims
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IPC IPC(8): E01D19/02E01D21/00
Inventor 贾俊峰李文韬白玉磊杜修力张凯迪
Owner BEIJING UNIV OF TECH