Precast assembled pile foundation pier and construction method thereof

A prefabricated assembly and pile foundation technology, which is applied in infrastructure engineering, erection/assembly of bridges, bridges, etc., can solve the problems that do not involve the connection method of prefabricated caps and prefabricated pile foundations, so as to reduce adverse effects and speed up the construction process. , The effect of reducing construction noise

CN109267472APending Publication Date: 2019-01-25TONGJI UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-01-25

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Abstract

The invention relates to a prefabricated pile foundation pier and a construction method thereof, comprising a prefabricated pile, a prefabricated bearing cap and a prefabricated pier column, wherein the pile foundation pier is integrally connected by a first connection structure for connecting the prefabricated pile and the prefabricated bearing cap and a second connection structure for connectingthe prefabricated pier column and the prefabricated bearing cap; the first connection structure connects the precast pile and the bearing cap into a whole, which ensures the reliability of the connection between the pile and the bearing cap, and at the same time satisfies the sufficient compression, bending and shearing capacity and certain tensile capacity at the pile top. The second connectionstructure connects the precast pier column with the cap, and ensures that the bottom of the pier has sufficient compression, bending, shear and ductility seismic capacity. Compared with the prior art,the invention is conducive to realizing the whole bridge segment assembly construction of the concrete bridge, improving the construction quality, greatly accelerating the construction process, shortening the construction period, reducing the adverse impact on the environment, reducing the construction noise and the like.
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Description

technical field

[0001] The invention relates to the technical field of bridge construction, in particular to a prefabricated assembled pile foundation pier and a construction method thereof. Background technique

[0002] Over the past ten years, the planning and construction of my country's expressway network and the process of urbanization have continued to accelerate, and many long bridges across the strait have been built and planned, such as the Qingdao Bay Bridge, the Shanghai Yangtze River Bridge across the Yangtze River Estuary, and the Shanghai-Small Bridge. Donghai Bridge in Yangshan Deep Water Port, Hangzhou Bay Bridge across Hangzhou Bay, and various urban viaducts.

[0003] According to the domestic and foreign data collected, the prestressed concrete continuous girder bridge or continuous rigid frame bridge built by segmental assembly or pouring construction technology is mostly used in the approach bridges of long bridges across the strait and urban viaducts. S...

Examples

Embodiment 1

[0040] A prefabricated assembled pile foundation pier, such as Figure 1~6 As shown, it includes prefabricated pile 1, prefabricated cap 2 and prefabricated pier column 3, and the pier of the pile foundation passes through the first connection structure I for connecting prefabricated pile 1 and prefabricated cap 2 and is used for connecting prefabricated pier column 3 and prefabricated pier column 3 and prefabricated pier column 3. The second connection structure II of the platform 2 is connected as a whole:

[0041] The prefabricated cap 2 has a pre-embedded steel frame, the pre-embedded steel frame is composed of a top connector 23 and a bottom connector 22 connected by section steel 21, and the prefabricated cap 2 is provided with a reserved channel 24 at the bottom connector 22;

[0042] The first connection structure I includes the embedded part 4 at the bottom of the cap, the embedded part 5 at the pile head, and the fastener 6. Rebar planting 43, the pile head embedded...