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Title |
Cyclic Lateral Load Test on the Punching Shear Strength and the Lateral Displacement Capacity of Slab-Column Connections
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Keywords |
무량판 구조 ; 슬래브-기둥 접합부 ; 전단강도 ; 횡변위 성능 ; 전단보강 Flat plate ; Slab-column connection ; Punching shear strength ; Lateral drift capacity ; Shear reinforcement |
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Abstract |
In the flat-plate slab design of the KCI and ACI building code, the punching shear strength of connections with shear reinforcement can increase one and half times to that of connections without shear reinforcement. And the ACI-ASCE committee 352 recommendations propose limiting the direct shear ratio Vg/Vc on interior connections to 0.4 to insure adequate drift capacity. In this study, four interior column-slab connections were tested to look into the punching shear strength and the lateral displacement capacity of the flat-plate slab with and without shear reinforcement under cyclic lateral loading. Based on the test results, it is found that the provision about punching shear strength in the codes may appropriate for the gravity loading only whereas it is unconservative for the lateral loading and that the limit of ACI-ASCE committee 352 appears conservative.
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