Elastic-plastic Analysis For Concrete-filled Rapid Wall Construction

Rapid wall is new building material and has many advantages. It is widely usedto non-earthquake zone such as Australia, many researches remains yet to be done,especially in design, construction and theory. Based on tests on concrete-filled rapidwall (composite wall panels) and macro models on Shear Wall, macro model forcomposite wall panels are provided in this paper. With the Simplifiedfour-vertical-line-element model based on macro model for composite wall panels,static-elastic-plastic analysis is done for a structure out of composite wall panels. Themain work is as follow:The analytical model for composite wall panels is established by using themulti-vertical-line-element model，then the method for calculating theforce-displacement skeleton curves of multi-vertical-line-element, shear element andhysteretic rule is proposed. When calculating shear stiffness, Bond-slip characteristicin the concrete and the glass fiber reinforced gypsum is scaled by discountcoefficient，influence of axial load on shear stiffness is calculated in virtue of ratio ofaxial load to compressive strength. With the model of micro-mechanics rectangle,equivalent shear stiffness is deduced on the assumption that equivalent strain. Theconcrete filled panels and the partial concrete filled panels test data is analyzed bymaking use of this model. The calculated curves agree well with the experimentalones. It proves that this model has the advantages of clear mechanical conception，simple calculation and relatively good accuracy，it is convenient for calculatingintegral structure.With the Simplified four-vertical-line-element model, modal analysis is done fora six-storied house. The calculated periods and modes of vibration agree well withtested ones, it proves the accuracy and validity of the proposed analytical model andthe calculating method. At the same time, pushover analysis is carried out, thecalculated performance points under frequent earthquake and very rare earthquakeproved the story drift ratio can meet the elastic limit requirement and theelastic-plastic limit requirement, the proposed analytical model can verify reliabilityof an actual building design.