Experimental Study on Seismic Performance of Concrete Composite Shear Wall with Self-Tapping Nail Connection
The self-tapping nails connecting construction for prefabricated composite shear wall was proposed in this research.Three full-scale composite shear wall specimens were designed and tested by low cyclic experiment to study the seismic behavior of concrete composite shear wall with self-tapping nails connection.The shear span ratio of specimens was 1.39.The experimental variables included self-tapping nails connection,self-tapping nails and post-pouring belt connection,and L-shaped structural column.The failure modes,bearing capacity,hysteretic characteristic,stiffness degradation,energy consumption,and strain response were analyzed and discussed.The experimental results showed that the self-tapping nails connection had the advantages of good mechanical behavior and convenient installation.Compared with the specimen with self-tapping nails connection,the ultimate bearing capacity and initial stiffness of the specimen with self-tapping nails and post-pouring belt connection increased by 8.54%and 6.03%,respectively.Compared with the specimen without L-shaped structural column,the ultimate bearing capacity,initial stiffness and energy consumption of the specimen with L-shaped structural column increased by 67.48%,129.33%,and 277.93%,respectively.The concrete composite shear wall with self-tapping nail connection has good seismic performance that meets the seismic design requirement of prefabricated concrete composite shear wall residence building and it can be used in practice.
prefabricated concrete structurecomposite shear wallself-tapping nail connectionseismic performanceexperimental study
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