Node component used for connecting steel tube concrete column with building roof beam

Abstract

The invention a juncture structure used in connecting the steel pipe concrete post and the building coping, comprising a steel and fixed arranged juncture structure, all the juncture structure comprising an annual board structure and a steel cow leg component, the annual board component comprises more than one upper annual board and one lower annual board that the longitudinal cross-section are Lshaped, composed by the vertical annual board and the horizontal annual board turned outside, the upper annual board and the lower annual board is fixed connected with the outer wall of the steel pipe, the steel cow leg component is horizontally placed, comprising more than one steel cow leg, one end of the steel cow leg is fixed connected with the annual board component and the outer wall of thesteel pipe, another end of the steel cow leg is extended outside. The invention has a novel structure with a reasonable shearing force and torque-transmitting mechanism, the produce and assembly of the injecting concrete is easy, the juncture area is small, the device tunnel is not influenced.

Description

Technical field [0001] The invention relates to a component used for connecting beams and columns in construction engineering, in particular to a node component used for connecting steel pipe concrete columns and floor beams. Background technique [0002] The concrete-filled steel pipe structure has been widely used in high-rise and long-span buildings in recent years because it can give full play to the characteristics of steel pipe and concrete, and has the advantages of high strength, light weight, and good seismic performance. The beam-column joints are the key parts of the CFST structure. At present, there is no complete set of calculation theory and practical methods, that is, the technical key to the wide application of the CFST structure lies in the processing scheme of its joints. [0003] The concrete-filled steel tube joints provided in the existing national codes only have several simple forms: the joint forms used for the connection between concrete-filled steel...

AI Technical Summary

Problems solved by technology

[0007] 1) The section of the steel ring plate is too large, and the joint force transmission mainly depends on the force transmission of the steel ring plate, mainly the horizontal ring plate connected with the upper and lower edges of the steel corbel. The general horizontal ring plate section is not less than 150mm

After the nodes are covered with concrete, the volume is relatively large, which affects the building space;

[0008] 2) The steel ring plate is relatively wasteful. The stress of the horizontal ring plate is the place where the ring plate meets the steel corbel, and the rest of the ring plate has not reached the stress level of this place, and the uniform ring diameter is wasteful;

[0009] 3) The connection between the steel corbel and the floor beam is unstable and easy to slide: ordinary steel corbel shear studs cannot prevent sliding well when the floor beam is pulled outward;

[0010] 4) The layout of the floor frame beams is inflexible, and the cross-section and elevation of the floor frame beams are limited by the elevation and spacing of the horizontal ring slabs. It is difficult to deal with the situation of unequal beam heights and unequal elevations;

[0011] 5) There are difficulties in construction. The steel corbels and steel pipe columns are hoisted together, which not only requires higher lifting requirements for the tower crane, but also makes it more difficult to control the hoisting center of gravity

[0014] 1) The force transmission of the joints is not clear, the connection between the ring beam and the steel pipe wall is unreliable, the mechanical properties are close to hinge joints, and the safety is insufficient;

[0015] 2) The section of the ring beam is too large, and the force transmission of the joints mainly depends on the force transmission between the ring beam and the steel pipe wall. The quality of the section of the ring beam is high, and the section is too large, which causes the cost of the floor and foundation to increase, and the building space to decrease, which is not beautiful. And seriously affect the arrangement of equipment pipelines down the column

Images