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| DYNAMIC TEST OF INTERFACE STRESS DISTRIBUTION ON A BURIED STRAIGHT-WALL ARCH STRUCTURE SUBJECTED TO BLAST LOADS |
| ZHOU Jiannan1，2，XU Ying1，2，JIN Fengnian1，2，FAN Hualin3，CHEN Hailong1，2，WANG Peng1，2，XIE Wei1，2 |
(1. College of Defense Engineering，PLA University of Science and Technology，Nanjing，Jiangsu 210007，China；
2. State Key Laboratory for Disaster Prevention and Mitigation of Explosion and Impact，PLA University of Science
and Technology，Nanjing，Jiangsu 210007，China；3. College of Mechanics and Materials，
Hohai University，Nanjing，Jiangsu 210098，China) |
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Abstract For sake of disclosing dynamic loading distribution on straight-wall arch lining，the time-history curve of free field stress and the radial interface loading on the arch structure in soil are measured through field model test which subjected to blast loads. Through data fitting and normalization method，the envelope diagram of peak loading distribution on cross and longitudinal sections of arch structure are obtained. The results of theoretical and numerical methods are verified and compared with the measured loading distribution law. Results show a good agreement between experimental data and theoretical calculation and finite element computation. The dynamic loading on buried arch structure approximates a triangular distribution. Making use of equivalent principle of load distribution scale，a simplified linear function of local dynamic load is proposed and the loading calculation procedure of buried arch structure anti-blast loading is developed.
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Received: 23 April 2013
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2013, Vol. 32 
