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| Numerical analysis and anti-knock property study of concrete dam subjected to underwater explosion |
| Received:January 03, 2017 Revised:April 28, 2017 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20170103002 |
| KeyWord:times concrete dam foam concrete blast load dynamic response |
| Author | Institution |
| 刘晓蓬 |
大连理工大学 海岸和近海工程国家重点实验室, 大连 ;大连理工大学 建设工程学部工程抗震研究所, 大连 |
| 陈健云 |
大连理工大学 海岸和近海工程国家重点实验室, 大连 ;大连理工大学 建设工程学部工程抗震研究所, 大连 |
| 徐强 |
大连理工大学 海岸和近海工程国家重点实验室, 大连 ;大连理工大学 建设工程学部工程抗震研究所, 大连 |
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| Abstract: |
| In this paper,the RHT concrete constitutive model is used to model the dynamic response of a concrete slab under blast loadings,based on Eulerian and Lagrangian coupling method,and LS-DYNA nonlinear finite element program.The numerical results are used to compare with the field experimental results,and the comparison shows the effectiveness of the RHT model.Based on the RHT model,the dynamic response and damage condition of the dam with and without foam concrete cover under 2 t TNT explosive blast loadings are studied.The detonation point is 10 m away from the upstream of the dam and in different detonation depth.When there is no foam concrete protective layer,the location of the main damage area on the upstream surface of the dam always moves to the bottom of the dam with the increase of the initiation depth.When there is a foam concrete protective layer on the dam,the damage area of the upstream surface is significantly smaller,and the damage area of the downstream surface is also smaller than that of no protective layer.The results show that the foam concrete can effectively reduce the damage of concrete dam under explosive loads,and have a good protective effect on the anti-explosive properties of concrete dams. |
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