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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.77 No.4
- 발행연도
- 2021.1
- 수록면
- 441 - 461 (21page)
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초록· 키워드
오류제보하기
Reinforced concrete (RC) columns are crucial in building structures and they are of higher vulnerability to terrorist threat than any other structural elements. Thus it is of great interest and necessity to achieve a comprehensive understanding of the possible responses of RC columns when exposed to high intensive blast loads. The primary objective of this study is to derive analytical formulas to assess vulnerability of RC columns using an advanced numerical modelling approach. This investigation is necessary as the effect of blast loads would be minimal to the RC structure if the explosive charge is located at the safe standoff distance from the main columns in the building and therefore minimizes the chance of disastrous collapse of the RC columns. In the current research, finite element model is developed for RC columns using LS-DYNA program that includes a comprehensive discussion of the material models, element formulation, boundary condition and loading methods. Numerical model is validated to aid in the study of RC column testing against the explosion field test results. Residual capacity of RC column is selected as damage criteria. Intensive investigations using Arbitrary Lagrangian Eulerian (ALE) methodology are then implemented to evaluate the influence of scaled distance, column dimension, concrete and steel reinforcement properties and axial load index on the vulnerability of RC columns. The generated empirical formulae can be used by the designers to predict a damage degree of new column design when consider explosive loads. With an extensive knowledge on the vulnerability assessment of RC structures under blast explosion, advancement to the convention design of structural elements can be achieved to improve the column survivability, while reducing the lethality of explosive attack and in turn providing a safer environment for the public.
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참고문헌 (46)
참고문헌 신청
Abedini, M. / 2020 / Investigation into damage criterion and failure modes of RC structures when subjected to extreme dynamic loads / Arch. Comput. Meth. Eng 27(2):501~515
Abedini, M. / 2019 / Pressure–Impulse(P–I)diagrams for Reinforced Concrete(RC)structures : A review / Arch. Comput. Meth. Eng. 26(3):733~767
Abedini, M. / 2020 / Comparison of ALE, LBE and Pressure Time History Methods to Evaluate Extreme Loading Effects in RC Column / The Structures
Bao, X. / 2010 / Residual strength of blast damaged reinforced concrete columns / Int. J. Impact Eng 37(3):295~308
Mahmoud Bayat / 2019 / Application of power spectral density function for damage diagnosis of bridge piers / Structural Engineering and Mechanics, An Int＇l Journal 71(1):57~63
Abedini, M. / 2019 / Pressure–Impulse(P–I)diagrams for Reinforced Concrete(RC)structures : A review / Arch. Comput. Meth. Eng. 26(3):733~767
Abedini, M. / 2020 / Comparison of ALE, LBE and Pressure Time History Methods to Evaluate Extreme Loading Effects in RC Column / The Structures
Bao, X. / 2010 / Residual strength of blast damaged reinforced concrete columns / Int. J. Impact Eng 37(3):295~308
Mahmoud Bayat / 2019 / Application of power spectral density function for damage diagnosis of bridge piers / Structural Engineering and Mechanics, An Int＇l Journal 71(1):57~63
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