Seismic Behavior Research Of Assembled Hollow-Core Reinforced Concrete Shear Wall

Nowadays,the assembled residence represent the trend of future with its distinctive advantage such as environment friendly,energy saving and high efficiency of construction.As a branch of the assembled structure system,assembled hollow-core reinforced concrete shear walls will surely gain a great development.Quasi-static test design of 4 assembled hollow-core RC shear walls were carried out in the passage with finite element analysis run on MSC.Marc and ABAQUS,and discuss the influence of parameters on walls during design.The number of aspects of specific research is 3 and shown as followed:1.Complete experiments design of 4 assembled hollow-core RC shear walls and a cast-insitu shear wall,the shear span ratio is 2.25.In the experiment design,considered the boundary element type of cast-in-situ or pre-cast,and the vertical distribution reinforcement type of 1 row or 2 in the round core.It is generally belived that the round hole may weaken the mechanical behavior of walls,then cause the local failure,given this situation,it may be necessary to set vertical constructional reinforcement to improve overall performance of walls.2.Finite element analysis of assembled RC shear walls were conducted through the software MSC.Marc and ABAQUS,then compared the results with existed data similar to the experient above.It showed the establishment of model,the selection of parameters,the simulation of interface between the concrete element is reasonable,so this method could be adopted to simulate practical performance of assembled RC shear walls.3.Experiment analysis of the assembled hollow-core RC shear walls and parameter analysis were carried on through MSC.Marc based on t he successful verification of FEM method in the former passage,considered the influence of axial compression ratio and constructional reinforcement,the latter one included the strength,amount and diameter of reinforcement.It turned out that the axial compression ratio was the most powerful factor among all the parameter mentioned above.The function of constructional reinforcement was not significant in finite element analysis,so it is suggested the specific influence should be observed in the practical experiment.