Study of Characteristics of Vibration Velocity Amplifying Effect of  Building Structures Induced by Tunnel Blasting under  Dynamic and Static Conditions

doi:10.3973/j.issn.1672-741X.2016.07.007

Tunnel Construction ›› 2016, Vol. 36 ›› Issue (7): 812-818.DOI: 10.3973/j.issn.1672-741X.2016.07.007

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Study of Characteristics of Vibration Velocity Amplifying Effect of  Building Structures Induced by Tunnel Blasting under  Dynamic and Static Conditions

HU Huirong¹, HUANG Huadong^{2, 3}, WANG Xianyi³, LI Lianchao³

(1. Northwest Research Institute Co., Ltd. of CREC, Lanzhou 730000, Gansu, China;  2. Chongqing Municipal Administration Design and Research Institute, Chongqing 400020, China;  3. State Key Laboratory Cultivation Base for Bridge and Tunnel Engineering in Mountain Areas,  Chongqing Jiaotong University, Chongqing 400074, China)

Received:2016-01-20 Revised:2016-04-21 Online:2016-07-20 Published:2016-07-27

Abstract

Abstract:

A threedimensional multifield coupling model of tunnel blastingsurrounding rockbuilding structure under dynamic and static conditions is established based on data measured; and characteristics of vibration velocity amplifying effect of building structures induced by tunnel blasting is discussed and analyzed. The analytical results show that: 1) The response characteristics and vibration velocity amplifying effect of building structures under dynamic condition are different from those under static condition. 2) The vibration velocity amplifying effect of building structures under static condition is more obvious than that under dynamic condition; and the vibration velocity amplifying effect of building structures under dynamic condition is complicated and coincides with data measured. 3) The vibration velocity amplifying effect of building structures induced by tunnel blasting in soft ground is more obvious than that in hard ground.

Key words: tunnel blasting, seismic wave, building structure, amplifying effect, conditions, safety control

CLC Number:

U 45

HU Huirong, HUANG Huadong, WANG Xianyi, LI Lianchao. Study of Characteristics of Vibration Velocity Amplifying Effect of  Building Structures Induced by Tunnel Blasting under  Dynamic and Static Conditions[J]. Tunnel Construction, 2016, 36(7): 812-818.

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Study of Characteristics of Vibration Velocity Amplifying Effect of  Building Structures Induced by Tunnel Blasting under  Dynamic and Static Conditions

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