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Abstract:
In order to study deeply the dynamic failure process of single-layer spherical lattice shells, combining with shaking table tests of a K6 type single-layer spherical lattice shell, a set of vibration test methods describing the whole collapses process of single-layer spherical shells under strong earthquakes was designed. It included the impact method measuring natural vibration characteristics of structures, the low frequency amplitude-modulation loading assessing structural damage level, and the fundamental frequency simple harmonic loading monitoring structural failure process. Based on the data results of measurement, the collapse process's deformation history of a structure was described. The fundamental frequency, damping and modal shapes of a structure were analyzed. The order of bars of a structure to enter a plastic state was recorded. The rules of structural damage evolution and collapse failure mechanism were explored. At last, considering material damage, the whole failure process of signle-layer spherical lattice shells was simulated with the FE method. Comparing with the test results, the correctness of the simulation method was verified. © 2017, Editorial Office of Journal of Vibration and Shock. All right reserved.
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Journal of Vibration and Shock
ISSN: 1000-3835
Year: 2017
Issue: 1
Volume: 36
Page: 31-37
Cited Count:
SCOPUS Cited Count: 6
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 5
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