Study On The Lateral Stiffness Of The Multi-layer Cold-formed Thin-walled Steel Residential Composed Walls

Lateral stiffness of the underlying composite wall of multi-layer cold-formed steel residential in the relevant literature on the basis of experimental study and finite element analysis are two ways to study the resistance to lateral stiffness properties and the impact ofrelevant factors, and the establishment of the simplified model formula of the composite wall and OSB board structure in both the X-type support through a variety of calculation methods.There are three constructors in the form of the experiment study about the combination of wall:two-sided X-type support,,single-sided cover plate board column spacing of400mm and single-sided cover plate board column spacing600mm, imposed by low cyclic loading,1:1experiment study. In detail the proposed testing program, the test device, the observed experimental phenomena and determination of the shear capacity of the composite wall, displacement and lateral stiffness, results showed that:the OSB board than the X-type support of the largest anti-combination wall shear capacity of high lateral stiffness is reduced; column spacing decreases can improve the anti-wall lateral stiffness.Finite element analysis using ANSYS finite element analysis program to establish experiment study of combination wall model, all components selected Shell181plastic shell element simulation, the connection between the components are selected coupling loaded by displacement control, automatic selection for solving ways. After calculable the data, finite element model using the stress and strain results the POST1output composite wall, draw the corresponding load-displacement curve. Compilation of relevant data to prove that the nonlinear theoretical analysis of the correctness of the model established on the basis of different structural types, the study wall column spacing, X-type support, rigid support, horizontal brace settings, OSB board, etc. against the side of influencing factors. The results showed that:wall column spacing decreases can increase the lateral stiffness of the wall of the portfolio; set rigid support and the horizontal pull of a combination of wall can effectively improve the lateral stiffness of the composite wall; set of X-type support or OSB board. the combination of wall can effectively improve the lateral stiffness of the composite wall, and the X-type support better support than the OSB board on the anti-side performance of the composite wall.Through the analysis of the experimental study and finite element theory, the lateral stiffness B of the composite wall in the steel skeleton, X support and OSB board at the same time under the simplified formula, the formula calculation results obtained using this simplifiedthe results match better, come to the calculation of feasibility analysis of observed and graphically.