Optimization of Connection Parameters of Steel Tube Slab Structures Based on Fuzzy Mathematics

doi:10.12068/j.issn.1005-3026.2022.02.015

Abstract

Abstract: A finite element model of the standard STS specimen was established on the basis of laboratory tests on longitudinal bending performance， then the model’s feasibility was verified. The influence of the wall thickness and diameter of pipe， the bolt diameter， the spacing between pipes and the flange plate thickness on the longitudinal flexural bearing capacity， the mid-span deformation under the yield load and the specimen’s average price per meter was studied by orthogonal test， and the parameters of STS specimen were optimized by fuzzy mathematics. The results indicate that the pipe diameter has the greatest influence on the mid-span deformation under the yield load， and the pipe thickness has the greatest influence on the longitudinal flexural bearing capacity and the specimen’s average price per meter. To meet the safety and economy， the ratio of parameters is suggested to be， the pipe diameter∶the pipe thickness∶the bolt diameter∶the spacing between pipes∶the flange thickness=1∶0.03∶0.05∶1.15∶0.02.

Key words: STS(steel tube slab)structure; flexural behavior in the longitudinal direction; orthogonal test; parameter optimization; fuzzy mathematics

CLC Number:

TU93

CAO Wen-xin， ZHAO Wen， LU Bo， JIA Peng-jiao. Optimization of Connection Parameters of Steel Tube Slab Structures Based on Fuzzy Mathematics[J]. Journal of Northeastern University(Natural Science), 2022, 43(2): 258-266.

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