Study On Seismic Performance And Heat Transfer Performance Of Bamboo-Steel Composite Wall

Bamboo-steel composite structure has been became a new structural system in recent years. Itnot only fully exploits the mechanical properties of bamboo plywood, but also effectivelyprevents premature buckling of cold-formed steel. Besides, it has features of light weight, highcapacity, cross-section efficiency, energy saving. As an important component of the force andmaintenance, it’s seismic performance and heat transfer performance is important to study.In this paper, bamboo-steel composite wall is combined by bamboo plywood and cold-formedC-shaped steel as the main structural materials, and utilized combined-effect of them to obtaingood performance of the force component.Through the quasi-static test of6group of walls, this paper discusses their failure process,failure mode and failure mechanism, studies the impact of steel thickness, bamboo plate thickness,and specimen thickness on the bearing capacity, and systematic analyzes the seismic performanceof composite wall from the characteristics of hysteresis curve, skeleton curve, ductility coefficient,energy factor, deformation, strength and stiffness.According to the results of test, this paper presents mathematical computational model,proposes the formula of ultimate bearing capacity, introduces the concept of combined effectcoefficient. Considering the cold-formed C-shaped steel and bamboo edging strip for improvementof bearing capacity, combining with thickness of steel, specimen and bamboo cover panel,obtaining combined effect coefficient to revise capacity formula, we believe that the results agreewell with the experimental data. This paper, analysis six bamboo-steel walls with ANSYS software,discusses the stress-strain state of the cold-formed C-shaped steel, bamboo edging strip, andbamboo cover panel, gets closer the experimental values. It shows that constitutive and meshing ofmodel can analyze the strain-stress state of similar walls, and provide an important reference oftest.At the same time, through energy detection test of13groups of composite walls, consideringparameters of sandwich filling materials, insulation systems and the specimen thickness, authortests the heat transfer coefficient of specimens, discusses the temperature distribution of surfaceand thermal bridges effect of composite keel, analyzes external insulation system, specimenthickness, filling material and other parameters on the performance of wall insulation. This paper also compares the experimental values and theoretical values, proposes a new design of energy-efficient wall for the different regional climate.Studies have shown that: Bamboo-steel composite wall has excellent seismic performanceand thermal insulation properties, and it can be used as bearing component and maintenancestructure of bamboo-steel composite structure.