自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 17    No. 5    October 2010

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Simplified design of rock cavern concrete lining to resist shock loading
ZHAO P J1, LOK T S2, YIN Zhi-qiang(殷志强)3, ZHOU Zi-long(周子龙)3

1. Butler Partners Pty Ltd, Queensland 4006, Australia;
2. Protective Technology Research Centre, School of Civil and Environmental Engineering,
Nanyang Technological University, Singapore 639798, Singapore;
3. School of Resources and Safety Engineering, Central South University, Changsha 410083, China

Abstract:A simplified method was proposed for the design of concrete lining in underground rock cavern/tunnel against shock loading. The loading may result from the detonation of explosives on ground surface or ground penetration projectiles exploding adjacent to the cavern/tunnel. The resulting problem necessitates the solution of the dynamics of a beam loaded by a transient pressure uniformly distributed over the span. According to mechanical characteristics of the system with rock bolt and shotcrete, a dynamic support design method based on equivalent single degree of freedom (SDOF) was put forward. The SDOF method was applied to obtaining the maximum displacement at the mid-span of the beam, which is often the controlling factor in the blast-resistant design. In the formulation of the problem, the proposed method combines the phenomena of spalling and structural dynamics theory. An example is provided to demonstrate the applicability of this simplified method.

 

Key words: tunnel lining design; shock loading; dynamic response; rock cavern

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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