Socket-and-spigot joint structure of prefabricated pier column and bearing platform and construction method

Abstract

The invention discloses a socket-and-spigot joint structure of a prefabricated pier column and a bearing platform adopting high-strength steel fiber reinforced concrete caulking and a construction method. The invention is characterized in that a socket groove is reserved in the position, corresponding to a pier column, of the top of the bearing platform, a prefabricated pier column is hoisted andinserted into a socket groove, high-strength steel fiber reinforced concrete caulking is poured into a gap between the periphery of the pier column and the wall of the socket groove, and firm connection is achieved. The connecting structure of the pier column and the bearing platform is simple, high in embedding and fixing efficiency, convenient to install and operate, relatively low in prefabricating and embedding precision control requirement, high in construction efficiency and safe and reliable in stress, and meanwhile the anti-seismic property of the connecting structure is similar to that of a cast-in-place structure.

Description

technical field [0001] The invention belongs to the technical field of bridge prefabrication and assembly in civil engineering, and in particular relates to a structure suitable for connecting caps to pier columns, in particular to a socket-type connection structure between prefabricated pier columns and caps using high-strength steel fiber concrete caulking and Construction method. Background technique [0002] In the application of bridge pier prefabricated assembly technology, the connection nodes between pier columns and caps have attracted much attention. This part is often the position with the largest bending moment, and under the action of earthquake force, it is also the position where plastic hinges appear, and its criticality is obvious. It is very necessary to find a connection structure with the advantages of simple structure, high embedding efficiency, convenient and quick construction, safety and reliability, seismic performance close to that of cast-in-place...

AI Technical Summary

Problems solved by technology

The disadvantage is that the on-site positioning of the prefabricated part is difficult, and there is still a large amount of in-situ concrete work on site, which reduces the construction efficiency to a certain extent

The depth of prefabricated pier columns with ordinary socket connection is required to be 1.5~2 times the diameter (or width) of the pier column cross-section, which increases the engineering volume of the cap platform and pier columns, and also increases the difficulty of installation.

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