The Study On The Seismic Performance Of EPSC Latticed Concrete Wall Under Different Factors

The expansive polystyrene granule cement(referred to as EPSC)latticed concrete wall is a composite wall made up of thermal insulation material expandable polystyrene granule and internal cast-in-place concrete skeleton,this kind of wall has the characteristics of bearing,insulation,heat insulation,fire resistance,earthquake resistance and so on,and it will load,insulation and construction perfect combination.In our country,the green energy conservation building is vigorously advocated,and it has a very broad application prospect.But the introduction of lattice concrete wall is not long in China,and its research and application is only in its infancy,so further research on the wall is still needed.In this paper,the side resistance test of existing lattice concrete wall is carried out,the reliability of the modeling method,material properties and simulation analysis in the finite element software ABAQUS is validated.Secondly,12 wall models are established considering four factors,such as aspect ratio,axial compression ratio,side column reinforcement and lattice beam reinforcement to Study on seismic behavior of lattice concrete wall under low cyclic loading.Through the above research show that:(1)The wall with shear ratio of shear failure at high aspect ratio is less than 1.5 and the coupling beam is the weakest part of the wall.Wall failure characteristics can be summarized as follows: shear failure of coupling beam and compression failure of concrete at the end of side column.(2)In the calculation of shear capacity of lattice concrete,the ratio of height to width,axial compression ratio,vertical reinforcement and horizontal reinforcement should be considered respectively.(3)Under the horizontal reciprocating load,the EPSC lattice concrete wall has better bearing capacity and deformation ability,It can be popularized and applied in practical engineering.