Method of lowering level of vibrations in buildings and structures located near subway lines of shallow embedment

Bulanov, Yu. A.; Il'ichev, V. A.; Shekhter, O. Ya.; Ukolov, V. N.

doi:10.1007/bf02110454

Cited by 1 publication

(1 citation statement)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[1][2][3] As subway tunnels are usually in confined spaces and bear a large flow of people, they have become a target for explosive attacks. 4,5 Blast doors are the most important protection and partitioning equipment in the subway which are capable of isolating the explosion from further spreading to the crowd. Reinforced concrete blast doors are a common type, while most studies focus on the structural design of the blast door and the ultimate anti-explosive performance.…”

Section: Introductionmentioning

confidence: 99%

Evaluation and identification of dynamic strain on a blast door subjected to blast loading using fibre Bragg grating sensors

Xiong

Zhang

Lü

et al. 2018

International Journal of Distributed Sensor Networks

View full text Add to dashboard Cite

Tunnels and subway blast doors are effective barriers to terrorist attacks and emergencies, and research into the mechanical properties of blast doors under explosive dynamic loads can improve and enhance the performance thereof. In this article, surface strain measurements on subway blast door models under dynamic load are carried out using quasi-distributed fibre Bragg grating sensors. The principle underpinning fibre Bragg grating sensing is introduced before the experiment. In the experiment, a model of an explosion-proof door was designed, and the experimental foundation pit was designed to be used to fix the explosion-proof door. Then, eight fibre Bragg grating sensors are placed at different positions on the surface of the explosion door to measure the strain at the time of explosion. Through the experiment we found that the optical fibre grating sensing system can be used under explosive loading surface strain: the strain distribution on the surface of the protective door is revealed under large dynamic strain. At the same time, the rebound effect of the protective door in the explosion was found through the strain phenomenon in double peak phenomenon. The strain distribution and rebound effect in the test results can provide a useful reference for the mechanical design of the blasting door and the strain monitoring of reinforced concrete structures under dynamic load.

show abstract

Section: Introductionmentioning

confidence: 99%