Multi-cavity concrete-filled steel tube column-steel beam out-plane plug welding assembly type connecting joint adopting opposite-penetrating steel bars

Abstract

The invention relates to a multi-cavity concrete-filled steel tube column-steel beam out-plane plug welding assembly type connecting joint adopting opposite-penetrating steel bars. The multi-cavity concrete-filled steel tube column-steel beam out-plane plug welding assembly type connecting joint comprises a multi-cavity concrete-filled steel tube composite column, in-plane steel beams and out-plane steel beams. The multi-cavity concrete-filled steel tube composite column comprises a column web, one or more stiffening plates and column web side fixing pieces, wherein the two ends of the stiffening plates are connected with the inner sides of the column webs. A joint side plate is connected and fixed to the outer side of each column web in a crossed mode. The column webs and the joint side plates are provided with opposite-penetrating welding through holes. The multi-cavity concrete-filled steel tube composite column is internally provided with the multiple steel bars, wherein the two ends of the steel bars stretch out of the welding through holes, and the steel bars are fixed through welding. Concrete is poured into the multi-cavity concrete-filled steel tube composite column. The connecting ends of the in-plane steel beams are inserted between the two joint side plates and fixedly connected. The connecting ends of the out-plane steel beams are provided with clamping plates. One ends of the clamping plates are fixed to the out-plane steel beams through bolts, and end plates are perpendicularly welded to the other ends of the clamping plates and provided with plug welding holes corresponding to the welding through holes. The stretching ends of the steel bars are inserted into the plug welding holes to be fixed to the end plates through plug welding.

Description

technical field [0001] The invention relates to a steel structure connection node, in particular to a multi-cavity steel pipe concrete column-steel girder surface plug-welded assembly connection node with steel rods piercing through it. Background technique [0002] Concrete-filled steel pipe column is to pour concrete into the steel pipe and tamp it to increase the strength and rigidity of the steel pipe. It is a structural member that the steel pipe and its core concrete can bear the external load together. According to the different cross-sectional forms, it can be divided into circular steel pipe concrete , square, rectangular and polygonal concrete filled steel pipe concrete. It has high bearing capacity, good ductility, superior seismic performance, convenient construction, and greatly shortens the construction period; the multi-cavity steel pipe concrete composite column divides the inner space of the steel pipe into multiple concrete cavities, which better improves i...

AI Technical Summary

Problems solved by technology

[0003] However, the existing multi-cavity concrete-filled steel pipe composite columns are all in-plane connection nodes. When they are set as intermediate columns, they need to be connected to steel beams outside the plane for structural configuration. At present, there is no corresponding connection node that meets its stress, seismic performance and its usage requirements

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