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Static and Dynamic Experimental Evaluation of Precast Columns With Grouted Splice Sleeve Connectors [Research Brief]
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2024-08-01
[PDF-690.67 KB]
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Abstract:The objectives of this study are twofold: 1) investigate the material load-bearing percentages and forces’ transmission rules of grouted couplers in static testing; and 2) evaluate impact responses and failure processes of specimens under low-velocity impact. To conduct the first objective, precast concrete specimens with two different types of pier-footing connections are designed, cast, and tested under sequential compressive and lateral loads. The strain-time history at five critical areas on longitudinal reinforcements and GSSs are recorded and analyzed. The compressive and shear behaviors between the piers with couplers in the footing and those with connectors embedded in the pier base are then compared. Finally, the compressive and shear load transmission mechanisms from a detailed model perspective are proposed.
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