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2022 Vol.35, Issue 3

Research Paper

Structural Behavior of Reinforced Concrete Members Subjected to Axial and Blast Loads Using Nonlinear Dynamic Analysis

비선형 동적해석을 이용한 축하중과 폭발하중을 동시에 받는 철근콘크리트 부재의 구조 거동 분석

Seung-Hoon Lee1
,
Han-Soo Kim2*
이 승훈1
,
김 한수2*
1Graduate Student, Department of Architecture, KonKuk University, Seoul, 05029, Korea
2Professor, Department of Architecture, KonKuk University, Seoul, 05029, Korea
1건국대학교 건축공학과 박사과정
2건국대학교 건축학부 교수
*Corresponding Author
30 June 2022. pp. 141-148
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Abstract

In this study, the structural behavior of reinforced concrete members under simultaneous axial and blast loads was analyzed. Nonlinear dynamic analysis verification was performed using the experimental data of panels under fundamental blast load as well as those of reinforced concrete columns subjected to axial and blast loads. Because Autodyn is a program designed only for dynamic analysis, an analysis process is devised to simulate the initial stress state of members under static loads, such as axial loads. A total of 80 nonlinear dynamic finite element analysis procedures were conducted by selecting parameters corresponding to axial load ratios and scaled distances ranging 0%~70% and 1.1~2.0 (depending on the equivalent of TNT), respectively. The structural behavior was compared and analyzed with the corresponding degree of damage and maximum lateral displacement through the changes in axial load ratio and scaled distance. The results show that the maximum lateral displacement decreases due to the increase in column stiffness under axial loads. In view of the foregoing, the formulated analysis process is anticipated to be used in developing blast-resistant design models where structural behavior can be classified into three areas considering axial load ratios of 10%~30%, 30%~50%, and more than 50%.

Keywords
plant
axial load
blast load
blast-resistant design
performance criteria
autodyn

본 논문에서는 축하중과 폭발하중을 동시에 받는 철근콘크리트 부재의 구조 거동을 분석하였다. 기본적인 폭발하중을 받는 패널 실험 데이터, 축하중과 폭발하중을 받는 철근콘크리트 기둥 실험데이터를 이용하여 비선형 동적해석 모델링을 검증하였다. 축하중의 적용에 있어서 Autodyn은 동적해석만을 위한 프로그램이기 때문에 축하중과 같은 정적 하중에 대한 초기 응력 상태를 모사하는 해석 절차를 제시하였다. 축하중비 0%~70% 구간과 TNT 등가량에 의존한 환산거리 1.1~2.0에 해당하는 매개변수를 선정하여 총 80개의 비선형 동적 유한요소해석을 진행하였다. 축하중비와 환산거리의 변화를 통해 손상정도와 최대 변위 및 회전각으로 구조 거동을 비교 분석한 결과로 원거리 폭발하중에서 축하중을 받는 기둥의 강성 증가로 최대 변위가 감소한다. 결과적으로 축하중비 10%~30%, 30%~50%, 50% 이상의 영역 3가지로 구조적 거동 분류가 가능함에 따라 내폭 설계 모델 개발에 활용될 수 있을 것으로 보인다.

키워드
플랜트
축하중
폭발하중
내폭설계
성능기준
오토딘
References
1
ACI 318-19 (2019) Building Code Requirements for Structural Concrete, American Concrete Institute, MI, p.623.
2
ASCE (2010) Design of Blast-Resistant Buildings in Petrochemical Facilities, American Society of Civil Engineer, Virginia, p.300.
3
ASCE 41-17 (2017) Seismic Evaluation and Retrofit of Existing Buildings, American Society of Civil Engineer, Virginia, p.576.
4
ASCE 59-11 (2011) Blast Protection of Buildings, American Society of Civil Engineer, Virginia, p.108.
5
Autodyn (2005) Autodyn Theory Manual Revision 4.3, Century Dynamics, p.235.
6
Bao, X., Li, B. (2010) Residual Strength of Blast Damaged Reinforced Concrete Columns, Int. J. Impact Eng., 37, pp.295~308. 10.1016/j.ijimpeng.2009.04.003
7
Braimah, A., Siba, F. (2018) Effective Stiffness of RC Columns, Can. J. Civ. Eng., 45, pp.289~303. 10.1139/cjce-2016-0390
8
Elwood, K.J., Eberhard, M.O. (2006) Effective Stiffness of RC Columns, PEER Research Digest 2006-1, Pacific Earthquake Engineering Research Center, pp.1~5.
9
FEMA 356 (2000) Prestandard and Commentary for Seismic Rehabilitation of Buildings, Federal Emergency Management Agency, Washington, DC, p.518.
10
Kim, H.S., Ahn, H.S., Ahn, J.G. (2014) Erosion Criteria for the Blast Analysis of Reinforcement Concrete Members, J. Archit. Inst. Korea Struct. & Constr., 30(3), pp.21~28. 10.5659/JAIK_SC.2014.30.3.021
11
Kyei, C., Braimah, A. (2017) Effects of Transverse Reinforcement Spacing on the Response of Reinforced Concrete Columns Subjected to Blast Loading, Eng. Struct., 142, pp.148~164. 10.1016/j.engstruct.2017.03.044
12
Lee, S.H., Kim, H.S. (2021) Study on the Calculation of the Blast Pressure of Vapor Cloud Explosions by Analyzing Plant Explosion Cases, J. Comput. Struct. Eng. Inst. Korea, 34(1), pp.1~8. 10.7734/COSEIK.2021.34.1.1
13
Momeni, M., Hadianfard, M. A., Baghlani, A. (2019) Numerical Damage Evaluation Assessment of Blast Loaded Steel Columns with Similar Section Properties, Struct., 20, pp.189~203. 10.1016/j.istruc.2019.04.002
14
Nickerson, J.M., Trasborg, P.A., Naito, C.J., Newberry, C.M., Davidson, J.S. (2015) Finite Element Evaluation of Blast Design Response Criteria for Load-Bearing Precast Wall Panels, Int. J. Prot. Struct., 6(1), pp.155~174. 10.1260/2041-4196.6.1.155
15
PEER/ATC-72-1 (2010) Modeling and Acceptance Criteria for Seismic Design and Analysis of Tall Buildings, Pacific Earthquake Engineering Research Center, California, p.242.
16
Shi, Y., Hao, H., Li, Z. (2008) Numerical Derivation of Pressure-Impulse Diagrams for Prediction of RC Column Damage to Blast Loads, Int. J. Impact Eng., 35, pp. 1213~1227. 10.1016/j.ijimpeng.2007.09.001
17
Thai, D.K., Pham, T.H., Nguyen, D.L. (2019) Damage Assessment of Reinforced Concrete Columns Retrofitted by Steel Jacket under Blast Loading, Struct. Des. Tall Spec. Build., 29(1), pp.1~15. 10.1002/tal.1676
18
UFC3-340-02 (2008) Structures to Resist the Effects of Accidental Explosions, Depart of Defence(DoD), p.1943.
19
USACE (2005) Component Explosive Damage Assessment Workbook, US Army Corps of Engineers, p.140.
20
Woodson, S.C., Baylot, J.T. (1999) Structural Collapse: Quarter- scale Model Experiments, Technical Report SL-99-8, US Army Corps of Engineers Engineer Research and Development Center, USA, p.174. 10.21236/ADA369355
21
Woodson, S.C., Baylot, J.T. (2000) Quarter-scale Building/ Column Experiments, Proceeding of Advanced Technology in Structural Engineering, Philadelphia, pp.1~8. 10.1061/40492(2000)99
22
Wu, C., Oehlers, D.J., Rebentrost, M., Leach, J., Whittaker, A.S. (2009) Blast Testing of Ultra-high Performance Fibre and FRP-retrofitted Concrete Slabs, Eng. Struct., 31, pp.2060~ 2069. 10.1016/j.engstruct.2009.03.020
23
Zhang, C., Gholipour, G., Mousavi, A.A. (2020) Blast Loads induced Responses of RC Structural Members: State of the Art Review, Compos. Part B, 195, 108066. 10.1016/j.compositesb.2020.108066
Information
  • Publisher :Computational Structural Engineering Institute of Korea
  • Publisher(Ko) :한국전산구조공학회
  • Journal Title :Journal of the Computational Structural Engineering Institute of Korea
  • Journal Title(Ko) :한국전산구조공학회 논문집
  • Volume : 35
  • No :3
  • Pages :141-148
  • Received Date : 2022-02-08
  • Revised Date : 2022-04-28
  • Accepted Date : 2022-04-29
  • DOI :https://doi.org/10.7734/COSEIK.2022.35.3.141
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