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Date of Publication:2017-01-01

Journal:地下空间与工程学报

Issue:3

Page Number:765-772

ISSN No.:1673-0836

Abstract:Existence of tunnel in urban area changes the foundation conditions of nearby existing structures,affecting the seismic response of buildings.Generalized inter-story drift spectrum,in which the existing structures were equivalently simplified as combined shear-flexural beams,was used to analyze the influence of tunnel on interstory drift of nearby buildings with different distances from the tunnel;meanwhile,the influence of the tunnel on the inter-story drift distribution along the dimensionless height was studied and discussed.It is illustrated that existence of tunnel increases the inter-story drift of structures,so more attention should be paid in engineering design and analysis;when the building is located away from the tunnel with distance of 2.0 times diameter length of the tunnel,the effect of the tunnel can be ignored.Additionally,the existence of the tunnel does not influence the inter-story drift ratio distribution along dimensionless height,however,it increases the inter-story drift of the anti-seismic weakness location of the building,which should be considered carefully.

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