| As a new type of wall material,building gypsum has many advantages such as environmental protection,light weight,comfort and so on.The structural components made of building gypsum can realize industrial production,which can not only guarantee the quality of the components,but also can greatly improve the construction speed of the building.Common concrete gypsum composite wall plate is mainly introduced from Australia,Chinese researchers have done a lot of experiments on the composite wall component to study its seismic performance,analysis the composite wall structure and explore the simplified calculation method.At present,many achievements have been made in the research of this kind of composite wall panels,and it has been applied in practical engineering.The main contents of this paper and related research results are as follows:(1)According to the composite homogenization theory,the theoretical analysis of the concrete structure in the gypsum composite wall component is carried,the author puts forward a simplified calculation method,calculation formula of elastic modulus,Poisson's ratio,the density of the material constant are derived from composite wallboard.(2)The calculation of the composite external wall insulation system with component has been simplified,which can be used for the analysis of the overall structure of two equivalent simplified model and two simplified calculation model of the material constant calculation formula deduced;The application of two simplified model to analyze the whole structure can effectively reduce the need of finite element calculation process the memory,improve the computational efficiency,the calculation accuracy can meet the engineering need.(3)The finite element analysis models of composite internal and external wall panels are established by using ANSYS finite element analysis software.The monotonic horizontal loading was carried out respectively.The result shows that,the difference between the calculated value of the simplified calculation model and the test value is less than 9%,which verifies the correctness of the simplified calculation models;the thermal insulation system of composite exterior wall board can improvethe rigidity of wallboard to some extent and the stiffness of the wallboard is increased by 9% ~ 14%.(4)Based on the simplified calculation method of composite inner and outer wall panels proposed in this paper,two kinds of 18-story composite wall structure model are taken into account and without considering composite wall insulation system.The seismic responses of the two structures under the small earthquakes and large earthquakes and different seismic wave excitations are studied,and the two structures are analyzed at the maximum floors.The seismic responses of the two structures are analyzed by the mode decomposition response spectrum method and the dynamic time history method.The influence of the insulation system on the overall structure of the composite external wall structure is explored in the aspects of the displacement,floor displacement,bottom shear force and the location of the critical layer.The results show that the composite external wall structure with insulation system can describe the seismic response of the structure more accurately,and the simplified model does not consider the conservative effect of the insulation system. |
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