Analysis and evaluation on seismic performance of the composite wallboard joints integrating thermal insulation and load bearing

Abstract

This study aimed to present a structurally integrated, insulated composite wall panel with joint components to enhance the insulation technology of exterior wall boards in complex construction technology, that has a poor fire performance has been accelerated in recent years. The development of modern constructions toward green architecture, environmental protection, and prefabrication was accelerated. The mechanical and seismic properties of three-wall panel T-joint specimens were studied via low-cycle quasi-static loading tests. The test results showed that the ductility coefficient of the sample was 2.9, which was higher than that of the ordinary composite wallboard. The stiffness of the specimen gradually reduced. Further, the wall panel joint conformed to the code requirements and showed a good seismic performance. Additionally, we simulated this kind of wall panel, and the critical parameters of the finite element method suitable for this joint were proposed. On the basis of these tests and simulations, the finite element method was used to analyze the factors affecting the energy dissipation ratio under different thicknesses of this type of wallboard. The joint optimization scheme of the wall panel conformed to the general specification, and the effect was remarkable. This study defined the relationship between axial compression ratio, wall thickness, and total energy consumption. The study conformed to the current development trend of prefabricated construction and has significant engineering application.