多维地震下考虑地表建筑的土和隧道的振动台试验研究

doi:10.13722/j.cnki.jrme.2021.0752

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Abstract At present，the seismic response of the underground structure-soil system is mostly studied without considering the vertical seismic action and the influence of surrounding buildings. In this paper，the tunnel-soil system was taken as the objective by considering the influence of a 10-story ground building. The shaking table test under multi-dimensional seismic waves was carried out to study the dynamic response law of the tunnel and soil. The test results show that the seismic response of tunnel and soil under multi-dimensional ground motions is stronger than that under unidirectional ground motions. With the increase of the seismic input dimension，the spectrum of soil does not change. The response of the soil and tunnel under far-field earthquake is strong. Because the near-field earthquake has high-energy velocity pulse，the difference of acceleration response between soil and tunnel under two types of seismic waves gradually decreases with the increase of the input intensity. The existence of surface structure-pile foundation leads to the obvious difference in the strain between the middle section and the end section of the tunnel. Compared with the strain of the end section，the strain on the right side of the middle section increases and the strain on the left side decreases.

Key words： tunnel engineering tunnel-soil-ground structure system dynamic response multi-dimensional seismic action near-field and far-field ground motion shaking table test

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	LI Yantao
	TIAN Ye
	ZONG Jinhui

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LI Yantao,TIAN Ye,ZONG Jinhui. Shaking table test of a tunnel-soil system considering the influence of surface buildings under multi-dimensional seismic waves [J]. , 2022, 41(7): 1453-1465.

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http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.0752 OR http://rockmech.whrsm.ac.cn/EN/Y2022/V41/I7/1453

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