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Numerical modeling of surface explosion effects on shallow-buried box culvert behavior during the water diversion
- Source :
- Thin-Walled Structures. 133:153-168
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- This paper is aim to investigate the damage characteristics of a shallow-buried water diversion box culvert subjected to a surface explosion. For this purpose, the soil model is verified by comparing with the analytical formulas of the Technical Manual (TM5-855-1), and the accuracy of the reinforced concrete model is validated with a previous explosion test. Subsequently, a three-dimensional (3D) numerical model of the water diversion culvert is established. A fully coupled Eulerian and Lagrangian (CEL) approach is presented to model the soil-structure-water interaction. The shock wave propagation characteristics in the soil, culvert and water medium are captured. The dynamic responses and damage processes of the shallow-buried box culvert in design water diversion condition (i.e. unconfined full flow) subjected to surface explosion are investigated. Other three water diversion conditions (i.e. pressure flow, free flow and no water) are employed to evaluate the influence of the water diversion condition on the antiknock performance of the culvert. The effects of the burial depth and charge weight on the dynamic behavior of the culvert to surface explosion are also discussed. The results show that the surface blast loads will cause a great threat to the whole security of the shallow-buried water diversion box culvert. The water diversion condition has a significant influence on the dynamic behavior of the culvert when subjected to a surface explosion.
- Subjects :
- Shock wave
Surface (mathematics)
Soil model
Culvert
Mechanical Engineering
Flow (psychology)
0211 other engineering and technologies
Numerical modeling
020101 civil engineering
02 engineering and technology
Building and Construction
Reinforced concrete
0201 civil engineering
Water diversion
Environmental science
Geotechnical engineering
021101 geological & geomatics engineering
Civil and Structural Engineering
Subjects
Details
- ISSN :
- 02638231
- Volume :
- 133
- Database :
- OpenAIRE
- Journal :
- Thin-Walled Structures
- Accession number :
- edsair.doi...........49832dc3d81498d17e8c907682f78ae8