Connecting method for fabricated concrete beam-column dry-type joints

Abstract

According to the connecting method of the assembly type concrete beam column dry type joint, high-strength finish rolling deformed steel bars are adopted, reserved holes of a concrete column are utilized, and dry type connection mainly including non-bonding, weak bonding and the like is carried out. Wherein the column is a concrete cast-in-place column or a prefabricated column with a bracket, and the column and the prefabricated beam can be conveniently spliced and mounted on site, applied with pre-stress and replaced and repaired after an earthquake through finish rolling deformed steel bars. Meanwhile, the brackets are arranged on the two sides of the column, so that vertical loads are conveniently borne, and vertical shearing force is conveniently transmitted. By applying pre-tension stress to the high-strength finish-rolled deformed steel bars and applying special shear-resistant devices at the two ends, good overall performance and rigidity of the fabricated beam-column joint under the normal use load can be provided, and meanwhile large elastic deformation is provided by means of non-bonding between the finish-rolled deformed steel bars and concrete in the column; the good deformation capacity and displacement recovery capacity of the structure under the accidental action are provided, and the convenience of post-earthquake repair of the assembly type joint is greatly improved.

Description

technical field [0001] The invention relates to a concrete connection method, in particular to a connection method for prefabricated concrete beam-column dry joints. Background technique [0002] In my country's construction industry, most buildings adopt the cast-in-place model, which has problems such as low industrialization, low production efficiency, unstable building quality, large loss of building materials, and large amount of construction waste, which is inconsistent with the country's energy-saving and environmental protection policies. match. Prefabricated structure, as a structural form that conforms to the industrialized production of buildings, is a new building model developed by the construction industry at home and abroad. It has superior economic, environmental, social benefits and good structural performance, and is increasingly widely used. However, since the main structure of prefabricated buildings relies on the connection strength of beam-column joints...

AI Technical Summary

Problems solved by technology

However, since the main structure of prefabricated buildings relies on the connection strength of beam-column joints, the connection of beam-column joints always restricts whether prefabricated buildings can be widely used.

Images