- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
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| Citation: | OU Zhijing, XIE Mingqin, QIN Zhiqing, LIN Shangshun, YU Jie. Seismic Performance Test and FEM Analysis of Assembled Concrete Pier with Sleeve and Steel Tube Shear Connector[J]. Journal of Southwest Jiaotong University, 2021, 56(6): 1169-1175, 1191. doi: 10.3969/j.issn.0258-2724.20191177
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In order to study the seismic performance of assembled concrete piers in different connection modes, the quasi-static test of two assembled concrete piers (using steel tube shear connector and grouting sleeve connection, respectively) and a cast-in-place integral concrete pier was conducted, the hysteresis curve, skeleton curve, ductility, stiffness degradation and energy consumption capacity of the comparison test specimens were analyzed, the finite element model was established by ABAQUS general procedure ,and the finite element parameters were analyzed. The results show that the hysteretic loops of the three types of piers are full and have good seismic performance, the failure mode of specimens is integral bending failure, there is no obvious strength degradation, and the piers have similar energy dissipation capabilities. Under the conditions of different axial compression ratio, slenderness ratio, concrete strength and steel strength, the horizontal peak load and displacement ductility coefficients of assembled concrete piers with steel tube shear connector are better than that connected with traditional grouting sleeves, and the increase amplitude is 4%−32% and 8%−36%, respectively. Axial compression ratio, slenderness ratio, embedding depth of steel tube shear connector and steel tube diameter are important parameters that affect the seismic performance of assembled concrete piers connected by steel tube shear connector.
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