Rectangular steel sleeve type connecting method for basic magnesium sulfate cement concrete assembly type frame joint

Abstract

The invention discloses a rectangular steel sleeve type connecting method for a basic magnesium sulfate cement concrete assembly type frame joint. The rectangular steel sleeve type connecting method comprises the following steps that 1, a prefabricated beam and a prefabricated column are poured, in the pouring process of the prefabricated beam, a prefabricated beam main rib is output in an end closed manner, and in the pouring process of the prefabricated column, a prefabricated column main rib is directly and normally output; 2, after the prefabricated column is in place, a temporary supporting system is arranged, the prefabricated beam is placed on the temporary supporting system, a rectangular steel sleeve is a tubular sleeve piece with the rectangular section, the side wall of the rectangular steel sleeve is a plane or a corrugated face, the prefabricated column main rib is sleeved with the rectangular steel sleeve, at the moment, the prefabricated beam main rib is connected with the outer side of the rectangular steel sleeve, and the prefabricated beam main rib and the rectangular steel sleeve are welded; and 3, a joint core area between the prefabricated column and the prefabricated beam is subjected to post pouring through basic magnesium sulfate cement concrete castable, and the basic magnesium sulfate cement concrete castable is castable with basic magnesium sulfate as a base body. The rectangular steel sleeve type connecting method has the beneficial effects of being reliable in construction, good in shock resistance and the like.

Description

technical field [0001] The invention belongs to the field of construction engineering, and relates to a connection method of a prefabricated concrete frame node, in particular to a rectangular steel sleeve type connection method of a basic magnesium sulfate cement concrete prefabricated frame node. Background technique [0002] The prefabricated frame refers to a frame structure building that is processed and manufactured in the factory with prefabricated columns, beams, slabs and other components and accessories, transported to the construction site, and assembled and installed on site through reliable connection methods. The beam-column joints are an important factor affecting the seismic performance of prefabricated frame structures. [0003] At present, the connection methods of nodes are mainly divided into two types: "wet connection" and "dry connection". The assembled integral node in "wet connection" is the most widely used node form in my country at present. The po...

AI Technical Summary

Problems solved by technology

The post-cast concrete used in the node area at this stage is mainly ordinary Portland concrete, which is aimed at the node pouring of basic magnesium sulfate cement concrete (BMSCC) prefabricated buildings and ordinary Portland cement concrete prefabricated buildings, ductility and the difference between old and new concrete. It is difficult to guarantee the performance such as the adhesion between

In addition, due to the design or construction errors of prefabricated components, the collision of steel bars is mainly the collision of the main reinforcement of prefabricated beams and the main reinforcement of prefabricated columns, which makes it difficult to install prefabricated beams and column stirrups in joint areas. Problems often lead to more serious problems such as cutting off the main reinforcement without authorization during construction, missing the installation of stirrups in the joint area, etc., which have a major impact on the seismic performance of the joint and cause safety hazards

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