Experimental Study on Seismic Behavior of T-Shaped Column Concrete Ribbed Wall with Self-Tapping Nails Connection
A concrete frame(truss)ribbed wall filled with foam concrete was developed and the self-tapping nail connection between the T-shaped column and the ribbed wall was proposed.Two full-scale T-shaped column concrete ribbed wall with self-tapping nails connection specimens were designed and fabricated,included a cross-shaped frame rib wall specimen and a central bearing truss rib wall specimen.Low cyclic loading test was carried out to study the failure modes and hysteretic characteristics.The effects of different rib structures on bearing capacity,stiffness,deformation capacity and energy dissipation were analyzed.The results showed that the shear cracking of foamed concrete and the hardened mortar layer occurred in the cross-shaped frame rib wall specimens,and the failure characteristics of central bearing truss rib wall were the concrete cracking and steel bar fractured.Compared with the ribbed wall specimen,the bearing capacity and initial stiffness of the ribbed truss wall specimen increased by 4.3%and 69.0%,respectively.The displacement capacity and energy dissipation of the ribbed wall specimen was better than central bearing truss rib wall.The self-tapping nails connecting had good connection behavior,which ensured the coordinated deformation of T-shaped column and concrete ribbed wall.This research can provide reference for engineering design and construction.
prefabricated shear wall structureconcrete ribbed wallSelf-tapping nails connectingseismic performanceexperimental research
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