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Title |
Experimental Evaluation of Bi-directionally Unbonded Prestressed Concrete Panel Blast Resistance Behavior under Blast Loading Scenario
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Authors |
최지훈(Ji-Hun Choi) ; 최승재(Seung-Jai Choi) ; 조철민(Chul-Min Cho) ; 김태균(Tae-Kyun Kim) ; 김장호(Jang-Ho Jay Kim) |
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DOI |
https://doi.org/10.4334/JKCI.2016.28.6.673 |
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Keywords |
극한하중 ; 폭발하중 ; 2방향 비부착 프리스트레스트 콘크리트 ; 폭발저항성능 extreme loading ; blast loading ; bi-directional unbonded prestressed concrete ; blast resistance capacity |
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Abstract |
In recent years, frequent terror or military attack by explosion, impact, fire accidents have occurred. Particularly, World Trade Center collapse and US Department of Defense Pentagon attack on Sept. 11 of 2001. Also, nuclear power plant incident on Mar. 11 of 2011. These attacks and incidents were raised public concerns and anxiety of potential terrorist attacks on major infrastructures and structures. Therefore, the extreme loading researches were performed of prestressed concrete (PSC) member, which widely used for nuclear containment vessel and gas tank. In this paper, to evaluate the blast resistance capacity and its protective performance of bi-directional unbonded prestressed concrete member, blast tests were carried out on 1,400×1,000×300 mm for reinforced concrete (RC), prestressed concrete without rebar (PSC), prestressed concrete with rebar (PSRC) specimens. The applied blast load was generated by the detonation of 55 lbs ANFO explosive charge at 1.0 m standoff distance. The data acquisitions not only included blast waves of incident pressure, reflected pressure, and impulse, but also included displacement, acceleration, and strains at steel, concrete, PS tendon. The results can be used as basic research references for related research areas, which include protective design and blast simulation under blast loading.
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