Analysis On Mechanical Properties Of EPSC Form Latticed Concrete Wall

As a new form of green building structure,EPSC form latticed concrete wall is taken as bearing structure and retaining structures as well with cement polystyrene form as a template,and with concrete as the filler,and with reinforced as compression and tensile member,which together distributed the load in the process of structure reasonable structure.EPSC form latticed concrete wall has several advantages,such as good thermal insulation performance,rational distribution of force,save materials,noise insulation and quickly construction speed and so on,which agree well with the line of the goals about green energy-saving building advocated by state.However,Present the application scope of EPSC form latticed concrete wall,just suitable for low-rise and multistory buildings,is limited.Because of its vertical bearing capacity of the lower lateral stiffness lead to smaller scope limitation for tall and super-tall buildings.Therefore,based on the study of the existing EPSC form latticed concrete wall and ordinary concrete latticed wall,numerical simulation analysis model of EPSC form latticed concrete wall were established to analyze its anti-seismic capacity under the condition of displacement reciprocating load,and on this basis,to study the application and optimization of the structure.The content of research as follows:(1)Four groups of latticed walls were established by the finite element analysis software ABAQUS,and the mechanics performance of the new integrated wall applying is analyzed.through reciprocating loaded on each wall with displacement,load-displacement curve,distribution of stress and strain,and deformation of the EPSC form latticed concrete wall were gained.(2)Under low cycle reciprocating load,mechanical performance indexes of simulation and test,such as the load-displacement curve,skeleton curve,stiffness degradation curve and ductility changes,were comparative analyzed.Results shows that the two results are consistent basically within the prescribed scope,thus,which verified the accuracy of the simulation analysis on the integrated wall.(3)In the total loading process of the EPSC form latticed concrete wall,the cooperative force of the various parts is analyzed.It is shown that the concrete column is mainly bearing the stress stress,the steel bar is mainly bearing the tension stress,and the load proportion of the cement polystyrene shell is smaller.At the same time,the characteristics of wall changes with the shear ratio,concrete strength,reinforcement ratioand axial ratio were analyzed.(4)On the basis of mutual authentication between simulation and experiment,new structure form of EPSC form latticed concrete wall is explore in terms of improved seismic performance.A new type of EPSC form latticed concrete wall is designed and whose stress performance is analyzed under monotonic and reciprocal horizontal loading by the finite element analysis software,and compared with the existing wall.The analysis results show that the seismic performance of the new EPSC form latticed concrete wall is good,and the horizontal and vertical bearing capacity is superior to the existing walls.