基于玻璃珠–砂垫层的岩土隔震系统振动台试验研究

doi:10.13722/j.cnki.jrme.2019.1138

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Abstract In this paper，a geotechnical seismic isolation system(GSI-GBSC) based on glass bead-sand cushions is proposed to protect structures against the destroying effects of earthquakes，which is to backfill the glass bead-sand cushion material between the structural foundation and the foundation soil for isolation. A large-scale shaking table model test which considers the field was carried out through the single-layer masonry structure model with and without isolation system. The scale ratio of the single-layer masonry structure model was 1/4. The north-south component of the El-Centro wave recorded in 1940 was selected as the input wave，and the peak input acceleration(PIA) was adjusted to 0.1 g，0.2 g and 0.4 g respectively. The test results show that the isolation effect of GSI-GBSC system is not significant enough when the minor earthquake occurs but the isolation effect strengthens with enhancing the earthquake intensity. When PIA is 0.4 g，the GSI-GBSC system decreases the roof acceleration and the inter-story drift of the structure by 50% and 47.5%，respectively，which means the GSI-GBSC system can significantly reduce the earthquake response of the superstructure and achieve seismic isolation.

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soil mechanics geotechnical seismic isolation glass bead-sand cushions shaking table test laminated shear box ')" href="#">masonry structure

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	Articles by authors
	JING Liping1
	2
	3
	YIN Zhiyong1
	2
	SUN Haifeng4
	DONG Rui1
	2
	XU Kunpeng1
	2
	CHENG Xinjun5

Cite this article:

JING Liping1,2,3, et al. Shaking table test of geotechnical seismic isolation system based on glass bead-sand cushions#br#[J]. , 2020, 39(7): 1458-1467.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2019.1138 OR https://rockmech.whrsm.ac.cn/EN/Y2020/V39/I7/1458

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