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Shock and Vibration
Volume 2017 (2017), Article ID 2014726, 13 pages
Research Article

A Blast-Resistant Method Based on Wave Converters with Spring Oscillator for Underground Structures

1Chongqing Key Laboratory of Geomechanics & Geoenvironmental Protection, Logistical Engineering University, Chongqing, China
2PLA Engineering College, Xuzhou, China

Correspondence should be addressed to Yuanxue Liu

Received 20 January 2017; Accepted 12 April 2017; Published 10 May 2017

Academic Editor: Nuno M. Maia

Copyright © 2017 Yu Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Researches on blast-resistant measures for underground structures such as tunnels and underground shopping malls are of great importance for their significant role in economic and social development. In this paper, a new blast-resistant method based on wave converters with spring oscillator for underground structures was put forward, so as to convert the shock wave with high frequency and high peak pressure to the periodic stress wave with low frequency and low peak pressure. The conception and calculation process of this new method were introduced. The mechanical characteristics and motion evolution law of wave converters were deduced theoretically. Based on the theoretical deduction results and finite difference software , the dynamic responses of the new blast-resistant structure and the traditional one were both calculated. Results showed that, after the deployment of wave converters, the peak absolute values of the bending moment, shear force, and axial force of the structure decreased generally, which verified the good blast-resistant effect of the new blast-resistant method.