Prefabricated concrete column and column assembly connection node fabrication and installation method

Abstract

The invention belongs to the field of fabricated concrete structures, and relates to a prefabricated concrete column and column assembly connection node fabrication and installation method. The prefabricated concrete column and column assembly connection node fabrication and installation method includes the following steps: making converting structural steels in a factory; anchoring the convertingstructural steels into a concrete section, and welding shearing keys; laying a bottom template of a prefabricated concrete column; tying steel bars of the prefabricated concrete column, and installing side templates; embedding the converting structural steels on the top and the bottom of the prefabricated concrete column; pouring concrete; curing the concrete, and demolishing the templates; transporting the prefabricated concrete column to a construction site after acceptance check; hoisting the prefabricated concrete column to a predetermined position at the construction site, wherein the outward-extended converting structural steels of an upper prefabricated concrete column and a lower prefabricated concrete column are aligned; fixing the converting structural steels by high-strength bolts; and pouring the concrete outside the converting structural steels. The concrete column adopts a factory prefabrication mode, and component quality is controllable; the upper prefabricated concrete column and the lower prefabricated concrete column can be connected by the converting structural steels and the high-strength bolts, the structure is simple, and the force transmission is reliable;the connection quality is convenient to check; construction and installation are quick and efficient, and requirements of prefabricated buildings can be met.

Description

technical field [0001] The invention belongs to the technical field of prefabricated concrete structures, and relates to a method for making and installing a prefabricated concrete column and a column assembly connection node. Background technique [0002] Prefabricated building is a building method in which building components are prefabricated in a factory, and after maintenance and acceptance, they are transported to the site for installation and construction. The development of prefabricated buildings is conducive to saving resources and energy, reducing construction pollution, improving labor production efficiency and construction quality, and promoting the construction industry to achieve informatization and industrialization. move. [0003] In building structures, a column is a vertical structural component in a building that supports the load on the upper part of the column and transfers it to the foundation. In the prefabricated concrete structure, the connection ...

AI Technical Summary

Problems solved by technology

However, in practical applications, the grouting sleeve connection technology has many shortcomings. First, it is difficult to connect the sleeve and the steel bar during construction; second, it is difficult to detect the density of the sleeve grouting, which is prone to grout leakage and pinching, and the construction quality is difficult to guarantee. ; The third is that the sleeve process is complicated and the cost is high, which makes the overall cost of the prefabricated concrete building increase

Patent CN105239723A discloses a prefabricated concrete column that adopts steel node butt joint connection. The upper and lower ends of the connection are welded after fitting, which avoids wet operation, but the construction speed of this node is slow, and the quality of on-site welding is difficult to guarantee; patent CN207469439U discloses a precast concrete column connection node , this joint simplifies the lapping work of the steel bars in the joint area and reduces the post-pouring work in the joint area, but it is difficult to guarantee the grouting density at the joint, and it is easy to have a sandwich layer during the construction process

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