Structure joint of novel reinforced concrete column-steel beam combined framework

Abstract

The invention discloses a structure joint of a novel reinforced concrete column-steel beam (RCS) combined framework, which comprises a steel beam, a reinforced concrete column and high-strength connecting bolts, wherein the reinforced concrete column comprises a square-shaped steel plate barrel, longitudinal steel bars and a plurality of stiffened steel plates which are arranged in the square-shaped steel plate barrel and divide the square-shaped steel plate barrel into a plurality of cells in a cross sectional direction; the stiffened steel plates and the square-shaped steel plate barrel are welded into a whole; the longitudinal steel bars passes through the cells respectively; concrete is cast in the cells respectively; and the steel beam is connected to the outer barrel wall of the square-shaped steel plate barrel by connecting end plates and the high-strength connecting bolts. Compared with the prior art, the invention provides extremely high shear capacity for the square-shaped steel plate barrel and the stiffened steel plates in the square-shaped steel plate barrel in the joint area, thereby truly meeting the requirements for high-strength joints in the earthquake-resisting design. The joint dispenses with penetrating steel beams and penetrating connecting bolts and stirrups arranged in the core area of the joint. The joint has the advantages of simple structure and high construction operability, directly solves the difficult engineering problems of reinforcement binding and concrete casting in the core area of the RCS joint and has high practicability in engineering.

Description

technical field [0001] The invention relates to a joint construction form of a concrete column-steel beam composite frame structure, which can be applied to industrial and civil buildings adopting the concrete column-steel beam composite structure system. Background technique [0002] Concrete column-steel beam (Reinforced concrete column-steel beam, RCS) composite structure is a composite structure form of steel and concrete. This structure gives full play to the respective advantages of steel and concrete, and its comprehensive performance is better than Traditional reinforced concrete frame structure and steel frame structure are known as "low cost and high efficiency" structural forms. Its main advantages are mainly reflected in: (1) the steel-concrete composite floor system has a large span and light weight, and has great technical advantages in long-span industrial plants and public buildings; (2) saves floor concrete formwork and supports , to speed up the constructi...

AI Technical Summary

Problems solved by technology

Among them, there are many structural measures in the core area of ​​the steel beam through-type joint, and it is difficult to pour concrete. The construction operations such as column longitudinal bars passing through the steel beam flange in the core area and column stirrups passing through the steel beam web in the core area are complicated; The screw of the type joint passes through the core area of ​​the joint, which is likely to cause the following problems: (1) a large number of horizontal and vertical reserved screw holes weaken the concrete shear capacity of the joint area, and the performance of the joint is difficult to guarantee; (2) the screw through the section of the column is longer, The joint stiffness is difficult to meet the requirements of rigid joints; (3) The contact surface between the concrete column and the steel beam end plate is prone to local pressure failure

The existence of these problems seriously restricts the application and popularization of RCS composite structures in engineering practice.

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