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Weld-Free and Worry-Free: Redefining Structural Efficiency in High-Seismic Regions

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 For contractors weary of labor-intensive, time-consuming structural installations—especially in high-seismic zones— bolted steel framing offers a solution that radically redefines safety standards. Its core advantage? A design that guarantees ease of assembly without sacrificing seismic performance, streamlining on-site workflows while meeting every compliance requirement. The days of project delays caused by on-site welding, tedious alignments, or bulky reinforcement are over. Bolted steel components are prefabricated, precision-cut, and pre-drilled, ready for assembly straight off the truck. The intuitive bolting system requires no specialized skills for installation, allowing crews to erect frames with rapid precision, significantly cutting down installation time compared to rigid structures like concrete. No more worrying about mismatched parts or labor-heavy phases—this system is built for high-speed execution, even under the toughest site conditions. But simplicity doesn’t ...
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Research progress of cold-formed steel structure

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 Cold-formed steel members have the advantages of light weight, high strength, easy prefabrication and mass production, fast installation and recyclable. The cold-formed steel structure system is mainly composed of wall system, floor system and roof system. Through theoretical analysis and experimental research, the cold-formed steel structural system is studied in depth. 



The research direction covers the mechanical performance of cold-formed thin-wall steel basic members and composite members, the lateral resistance performance of composite walls, the bearing capacity, stiffness and comfort of composite floors, and the seismic performance of the whole building. The relevant research results are as follows: 1) The half-energy method is used to deeply study the related effects of plate group buckling, and the design method of effective width to thickness ratio of edge stiffened plates is established; The failure characteristics and mechanical properties of cold-formed thin-wall steel axial compression columns are revealed, and a unified analysis method for the buckling critical load of simply supported and steady-supported axial compression columns is established. 2) The failure characteristics and mechanical mechanism of double-limb split cold-formed thin-wall steel axial compression column and bending beam are revealed, and a simplified calculation method of ultimate bearing capacity of cold-formed thin-wall steel split section column and beam is proposed. 3) The mechanical mechanism, failure mode and mechanical properties of traditional cold-formed thin-wall steel composite wall and cold-formed thin-wall steel-plate shear wall under horizontal load are revealed, and the theoretical analysis method of cold-formed thin-wall steel composite wall is established. 4) The mechanical mechanism, failure mode and mechanical properties of cold-formed thin-wall steel composite floor under vertical load, horizontal load and vibration excitation are revealed, and the design calculation method of cold-formed thin-wall steel composite floor is proposed. 5) The failure characteristics, dynamic characteristics and seismic response of cold-formed thin-wall steel residential buildings under seismic loads are revealed, and the finite element analysis method of low and multi-layer cold-formed thin-wall steel structural system is established. 6) The mechanical mechanism, failure mode and mechanical properties of cold-formed thin-wall steel split section columns under fire were revealed, and theoretical analysis methods, simplified mechanical models and design calculation theories were established.

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What is the difference between a single-layer reticulated shell and a double-layerreticulated shell?

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What are the differences between bolted ball grids and welded ball grids?

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 There are a number of differences between bolted ball grids and welded ball grids in terms of fabrication, construction and design. The following are specific comparisons: 1. Manufacturing process: The manufacturing of bolted ball net frame is mainly carried out in the factory, using mechanical shot blasting to remove rust, and then spraying paint, plastic spraying or zinc spraying treatment to enhance corrosion resistance.  The steel pipe and welded seam of welded ball mesh frame can only be descaled manually on site, and then paint or fireproof coating is brushed. For the welded part, it needs to be descaled and brushed at a stage to maintain, which increases the cost of later use and affects the safety of the structure. 2. Construction process: 70% of the workload of bolted ball grid frame is prefabricated in the factory, 30% of the workload is installed at the site, only a wrench is needed to tighten the bolts at the site, which is easy and fast, and can be constructed ...
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