加筋橡胶砂复合垫层隔震性能试验研究

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Abstract Aiming at the low-rise housing structures in villages which were damaged seriously in the earthquake, a new reinforced rubber sand mixture composite cushion (GRSMCC) was proposed. A kind of 0.2 meter thickness cushion was constructed by use of geocell, geogrid and RSM with rubber mass content of 30 percent. Shaking table tests were carried out taking into account two kinds of river sand, coarse or fine, three kinds of foundation pressure, 50 kPa, 100 kPa, 150 kPa, and three kinds of seismic wave input acceleration, El Centro 0.1g, 0.2g, 0.3g. The test results indicate that the GRSMCC acts well as a base isolator, and the isolation coefficient decreases with the increase of the foundation pressure as well as input acceleration. The GRSMCC with the river sand of big size has better seismic isolation effect, and the isolation coefficient is more affected by the foundation pressure and input acceleration. Compared with the references in literatures， it is found that the isolation effect of GRSMCC is better than that of pure rubber sand mixture cushions, which can be used as a feasible method for the seismic isolation of rural low-rise houses.

Key words： reinforced rubber sand mixture composite cushion isolation shaking table test isolation coefficient

Received: 25 April 2018 Published: 23 February 2020

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	Articles by authors
	LIU Fangcheng1
	WU Mengtao1
	2
	JING Liping3

Cite this article:

LIU Fangcheng1,WU Mengtao1,2, et al. Experimental study on the isolating performance of a new reinforced rubber-sand mixture composite cushion[J]. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(22): 184-189.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2019/V38/I22/184

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