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Wang, Ding; Li, Yueliang; Hao, Shengwang; Zhao, Dahai

Wave-passage effect of earthquake loadings on long structures. (English) Zbl 1359.74307

Int. J. Struct. Stab. Dyn. 16, No. 7, Article ID 1550037, 23 p. (2016).
Summary: The wave-passage effect of earthquake loadings on long-span structures is studied through use of a multiply-supported single-degree-of-freedom (SDOF) system excited by traveling seismic ground motions. The absolute acceleration response of the SDOF system is represented in the analytical form in the time domain. The frequency-domain analysis results indicate that the wave-passage effect may reduce the absolute acceleration response and the earthquake loading acting on the multiply-supported SDOF system. Further, for different velocities of wave-passage, the response spectra are calculated to represent the reduction of the maximum earthquake loading on the long-span system caused by the wave-passage effect. The computation results of the response spectra indicate that the reduction of the maximum earthquake loading is fluctuant, but has a general tendency to decrease with the increase in the apparent wave velocity and the structural natural period.

Cited in 1 Document

MSC:

74L05 Geophysical solid mechanics
86A17 Global dynamics, earthquake problems (MSC2010)

Keywords:

long structure; wave-passage effect; seismic ground motion; response spectrum; earthquake loading
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References:

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