Experimental Study on Seismic Performance of New Stacked Shear Wall Under High Shear Span Ratio
The new stacked shear wall has the characteristics of reducing prefabrication process and improving construction efficiency compared with the traditional stacked shear wall.In order to study the seismic performance of this new type of stacked shear wall under high shear span ratio conditions,this paper designs and produces two foot-scale shear wall specimens with a shear span ratio of 2.8,and investigates the hysteresis,energy dissipation,stiffness,load carrying capacity,and ductility of this new type of stacked shear wall under reciprocating loads through the proposed static tests.The test results show that the damage pattern of the new stacked shear wall is the same as that of the cast-in-place shear wall when the shear span ratio is 2.8,which is a bending-shear type of damage;the ultimate displacement of the new stacked shear wall is between 1/44 and 1/35,and the deformation capacity is in accordance with the specification requirements;its stiffness degradation characteristics,energy dissipation capacity,and ductility performance are all similar to those of the cast-in-place shear wall.The overall seismic performance can achieve the effect of"equivalent to cast-in-place".
seismic performancequasi-static testshear span ratio
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