Research on seismic performance of corrugated web rigid structures

Abstract

Corrugated web steel refers to the wavy steel along the length direction, which is widely used in beams, columns, walls, and other parts of the building structure, playing the role of connection and support. The wavy or corrugated shape of the web improves the shear instability and out-of-plane stiffness of the web to a certain extent. However, although H-shaped steel members with corrugated webs have the advantages of high strength, large stiffness, lightweight, and convenient construction, the relevant regulations point out that this kind of members can only be used for lower intensity or can be applied to higher intensity only when certain conditions are satisfied. one of the important conditions is that the ratio of the product of the design value of axial force with seismic action to the design value of flange section area and tensile strength of steel does not exceed 0.4. In this regard, this paper will further explore the seismic characteristics and applicable intensity of corrugated steel structure under earthquake through large-scale finite element ABAQUS simulation, observe the dynamic characteristics and failure of corrugated rigid frame structure by elastic-plastic time-history analysis method, and observe the plastic deformation characteristics of steel beam members under low cyclic load by hysteretic analysis method. The study shows that when the beam span and design are reasonable. The beam of corrugated web rigid frame structure can still be used in the area of high intensity above 7 degrees when the axial compression ratio is 0.5.

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