Column-Beam Joint Connecting Core Without Welding
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Solution Overview
Problem
Existing methods for connecting closed-section steel tube columns and beams are complex, require welding, and result in local buckling and brittle failures, while also being costly and labor-intensive, with limited applicability due to high manufacturing costs and safety concerns during high-place working.
Innovation Solution
A connecting core system comprising a closed-section intermediate column, a through-type diaphragm, and internal and external reinforcing members that can be assembled without welding, using bolts to secure the connection and improve buckling strength, allowing for efficient and safe construction of steel frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If welding is used to connect column flanges and beam flanges for moment connection, then connection strength is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The connecting core is divided into multiple components: a diaphragm, internal reinforcing members, and external reinforcing members. These segmented components can be manufactured separately and then assembled together, simplifying the manufacturing process while maintaining connection strength. The diaphragm serves as a base plate with openings for beams, while reinforcing members are inserted through slits to provide structural support without requiring welding.
Solution Approach 2:
The connecting core acts as an intermediary component between the column and beam, providing a non-welding connection method. The diaphragm and reinforcing members form a mechanical connection system that transfers loads between structural elements without requiring welds, thus reducing manufacturing complexity while maintaining structural integrity.
2Stability of the object's composition
If diaphragms are used to reinforce joints and prevent column surface deformation, then joint rigidity is improved, but the number of manufacturing processes and welding requirements increase
Solution Approach 1:
The reinforcing system is segmented into internal reinforcing members inserted through slits in the diaphragm and external reinforcing members attached to the outer surface. This segmentation allows each component to be manufactured and prepared independently, then assembled together, reducing the number of manufacturing processes compared to traditional welded diaphragm methods.
Solution Approach 2:
The invention replaces the welding-based mechanical system with a bolted or inserted mechanical system. Internal reinforcing members are inserted through slits and secured with bolts, while external reinforcing members are attached using mechanical fasteners. This substitution eliminates welding processes while maintaining the rigidity and stability functions of the diaphragm system.
3Ease of manufacture
If external type diaphragms are attached and welded to the outer side of steel tubes, then welding ease is improved, but steel material consumption and manufacturing cost increase
Solution Approach 1:
The reinforcing system is divided into internal and external reinforcing members that can be manufactured separately. The external reinforcing members are designed to be attached to the outer surface of the steel tube using mechanical fasteners rather than welding, reducing steel material consumption while maintaining ease of manufacture. The internal reinforcing members are inserted through slits in the diaphragm, providing structural support without requiring additional welding.
Solution Approach 2:
The invention replaces the welding-based attachment method with a mechanical fastening system. External reinforcing members are attached to the steel tube using bolts or other mechanical fasteners, eliminating the need for welding. This substitution reduces steel material consumption and simplifies the manufacturing process while maintaining the rigidity and strength functions of the diaphragm system.
4Productivity
If brackets are installed to connect beams to columns for multi-story construction, then construction capability is improved, but worker safety risks increase during high-place working
Solution Approach 1:
The connecting core is segmented into modular components (diaphragm, internal reinforcing members, external reinforcing members) that can be assembled on the ground before installation. This modular approach allows for safer ground-based assembly rather than high-place working, while maintaining the capability to construct multi-story buildings. The segmented components can be easily transported and installed at different heights without requiring workers to work at extreme heights during assembly.
Solution Approach 2:
The connecting core components are pre-assembled and prepared in advance on the ground before installation on the building structure. This preliminary action allows for quality control and safety checks to be performed under safe working conditions, eliminating the need for workers to perform complex assembly operations at high heights. The pre-assembled connecting cores can then be installed as complete units, reducing on-site working height and improving worker safety.
Data Source
AI summary
The present disclosure relates to a connecting core for column-beam joint, the connecting core being able to secure excellent rigidity through a simple process without welding. To this end, a connecting core for column-beam joint includes: a closed-section intermediate column; a diaphragm; and internal reinforcing members, in which slit for inserting the internal reinforcing members are formed at the diaphragm, and the internal reinforcing members inserted in the diaphragm are combined with the intermediate column. According to the present disclosure, high rigidity is secured, as compared with the related art, when a closed-section column and a beam are connected. Further, a closed-section column and a beam can be connected without welding, so the process can be shortened, connecting become easy, and quality is also uniform.