Seismic Performance of Reinforced Concrete Frame Structure in Consideration of the Effects of Infilled Wall
In this paper,the impact of half-height infilled walls on the failure modes of reinforced concrete(RC)columns was studied by quasi-static experiments of the frame structure model and the half-height infilled walls frame structure model.On the basis of experimental results,the seismic analysis model of the RC frame structure was established,and then the parameter of the model was studied.The impact of materials properties and masonry height of walls on the seismic performance of RC frame structures was also analyzed.The results show that the bearing capacity and stiffness of the structure with the infilled walls are improved and the ductility of it is reduced.With the increase of masonry height of walls,the free height of concrete column decreases.When the wall-column height ratio reaches 0.2,the effect of masonry walls on the seismic performance of frame structure is not significant,and when the wall-column height ratio reaches 0.6,the column failure mode changes from bending failure to shear failure.When the wall-column height ratio is 0.4 or below,the influence of masonry materials of walls on the seismic performance of composite structure is not significant,but when the wall-column height ratio is 0.6 or above,the influence of masonry materials of walls on the seismic performance of frame structure gradually appears.When the structure with the same masonry height of walls,the impact of the aerated concrete block infilled walls on the seismic performance of RC frame structure is the least.Therefore,without other improvement measures,aerated concrete block is recommended to reduce the adverse impact of infilled walls on seismic performance of RC frame structure.
masonry-infilled wallsRC frame structuremasonry height of wallsmaterial properties of wallsseismic failure mechanism
万方数据
维普
