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Shaking table tests for a small-scale single-layer latticed cylindrical shell and its dynamic response probability model |
ZHANG Ming1,2, XIE Changlin3,4,ZHI Xudong3,4 |
1.Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education,Southeast University,Nanjing210018, China;
2.School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031, China;
3.Key Lab of Structures Dynamic Behavior and Control, Harbin Institute of Technology, Harbin 150090, China;
4.School of Civil Engineering,Harbin Institute of Technology,Harbin 150090, China |
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Abstract In this paper a small single-layer latticed cylindrical shell model was fabricated for shaking table test in order to reduce the cost of the whole experiment process, and the dynamic response probability model considering the variability of ground motion was studied based on the shaking table test. Firstly, a small single-layer latticed cylindrical shell model was fabricated referring the existing method for fabricating the single-layer reticulated dome. Afterwards, a series of shaking table tests on the shell model, including dynamic response tests in the elastic phase and dynamic collapse test in the elastic-plastic phase, were conducted under the action of TAFT wave, artificial seismic wave and simple harmonic wave. Then, the dynamic response characteristics and collapse mode of the shell model were analyzed combining the field test data and the numerical simulation analysis results using the finite-element package ABAQUS. Finally, the effect of ground motion variability on the dynamic response of the shell model was studied based on the field test data of 40 tests followed by the preliminary fitting curve of the dynamic response probability and the variability of ground motion. This paper could provide an important reference for conducting a series of shaking table tests of the shell models and improving seismic design theories of spatial grid structures.
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Received: 23 January 2019
Published: 28 July 2020
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