Shaking table test study on the full frame supported thick plate transfer structure
In order to study the seismic response of the full frame supported thick plate transfer structure under different seismic intensities,a test model was made in a 1∶15 scale ratio for shaking table test.The test phenomena,dynamic characteristics,relevant seismic parameters,and strain response of the structure were analyzed and compared to determine the yield mechanism and weak areas of the structure.The results show that the test model can generally simulate the dynamic characteristics of the structural system well.Under the action of 7 degree small earthquake,the test model does not show cracks,and the structure is in the elastic stage.Under the bidirectional action of 7 degree moderate earthquake,the natural frequency of the structure decreased by an average of 25.560%compared to the unidirectional action of 7 degree moderate earthquake.Cracks began to appear on the surface of the upper structure's particulate concrete,and the lower frame support layer did not suffer damage.Under the action of a major earthquake,cracks in the upper structure significantly increase,and the bottom of the 3-story shear wall is the weak part.After the test is completed,the upper shear wall structure of the test model enters the plastic stage before the lower frame support layer yields,and the lower structure remains intact.The full frame supported layer has good seismic performance and meets the standard seismic fortification target.
full frame supported thick plate transfer structureskew lateral force resisting memberdynamic responseseismic performance
NETL
NSTL
万方数据
