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Research Article

Evaluation of Prediction Equations for Confined Circular Concrete Members of Core Concrete Compressive Strength

횡구속된 원형 콘크리트 부재의 심부 콘크리트 압축강도 예측식 평가

Ho-Young Kim1*
,
Jae-Hoon Lee2
김 호영1*
,
이 재훈2
1Manager, Structure Department, Yooshin, Seoul 06252, Korea
2Professor, Department of Civil Engineering, Yeungnam University, Gyeongsan 38541, Korea
1유신 구조부 과장
2영남대학교 건설시스템공학과 교수
*Corresponding Author
30 June 2024. pp. 30-38
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Abstract

Confining effect is one of the important items for seismic design and performance evaluation of reinforced concrete structures, since the concrete confined by transverse reinforcement shows high load resistance capacity and ductility. In this study, the accuracy of the 12 proposed equations were evaluated by comparing the test results of 189 transversely confined circular sections. As a result, the equations of proposed by Desayi et al., by El-Dash and Ahmad, by Sun and Sakino, by Eurocode 2, and by Korean KDS design codes provided relatively low variability and the equation of the Korean Design Standard showed the smallest coefficient of variation and predicted the relatively accurate results compared to the test data.

Keywords
transverse steel
confining effect
circular section
strength of confined concrete
Korean Design Standard

횡방향철근으로 구속된 콘크리트는 높은 하중저항성능과 연성능력을 발휘하므로, 횡구속효과는 철근콘크리트 구조물의 내진설계와 성능평가에 적용되는 중요한 항목 중이다. 이 연구에서는 지금까지 제안된 모델을 대상으로 189개의 횡구속된 원형단면의 압축강도 실험결과를 비교하여 제안식 12개에 대한 정확성을 평가하였다. 그 결과 Desayi 등, El-Dash와 Ahmad, Sun과 Sakino, Eurocode 2, 한국 KDS 설계기준의 수식은 비교적 변동성이 적었고, 한국 설계기준의 수식이 가장 작은 값의 변동계수를 보이며 실험값을 비교적 정확하게 예측하는 것으로 나타났다.

키워드
횡방향철근
횡구속효과
원형단면
횡구속된 콘크리트 압축강도
한국 설계기준
References
1

ACI Committee 318 (2019) Building Code Requirements for Structural Concrete (ACI 318-19) and Commentary. Farmington Hills, MI; American Concrete Institute (ACI).

2

Ahmad, S. H. and Shah, S. P. (1982) Stress-Strain Curves of Concrete Confined by Spiral Reinforcement, ACI Journal 79(64), 484-490.

10.14359/10922
3

Assa, B., Nishiyama, M. and Watanabe, F. (2001) New Approach for Modeling Confined Concrete. Ⅰ : Circular Columns, Journal of Structural Engineering, ASCE, 743-750.

10.1061/(ASCE)0733-9445(2001)127:7(743)
4

Bing, L., Park, R. and Tanaka, H. (2001) Stress-Strain Behavior of High-Strength Concrete Confined by Ultra-High and Normal Strength Transverse Reinforcement, ACI Structural Journal 395-406.

5

Desayi, P., Sundara Raja Iyengar, K. T. and Sanjeeva Reddy, T. (1978) Equation for Stress-Strain Curve of Concrete Confined in Circular Steel Spiral, Material and Structures 11(5), 339-345.

10.1007/BF02473875
6

El-Dash, K. M. and Ahmad, S. H. (1995) A Model for Stress-Strain Relationship of Spirally Confined Normal and High-Strength Concrete Columns, Magazine of Concrete Research, 47(171), 177-184.

10.1680/macr.1995.47.171.177
7

Eurocode 2 (2004) Design of Concrete structures, Part 1-1 General Rules and Rules for Buildings, European Committee for Standardization (Eurocode).

8

fib (2010) fib Model Code for Concrete Structures, The International Federation for Structural Concrete, lausanne, Switzerland (fib).

9

Issa, M. and ToBaa, H. (1994) Strength and ductility enhancement in high-strength confined concrete, Magazine of Concrete Research 46(168), 177-189.

10.1680/macr.1994.46.168.177
10

KCI (Korea Concrete Institute) (2022) Flexure and Axial Compression (KDS 14 20 20), Structural Concrete Design Code and Commentary. Seoul, Korea: KCI. (In Korean)

11

KIBSE (Korean Institute of Bridge and Structural Engineers) (2021) Concrete Bridge Design (Limit State Design Method) (KDS 24 14 21). Sejong, Korea: KIBSE. (In Korean)

12

Kim, H. Y., Choi, J. H., Hwang, D. K., Choi, H. Y., Park, K. B. and Lee, J. H. (2014) Evaluation of Confinement Effect of Circular Section concrete Confined by Transverse Reinforcement, Proceedings of the Korea Concrete Institute, 26(2), October, 237-238.

13

Kim, S. W., Kim, Y. S., Yun, G. J., Lee, J. Y. and Kim, K. H. (2012) Confinement Effect of High-Strength Steel Spirals According to Compressive Strength of Concrete, Journal of the Korea Institute for Structural Maintenance and Ispection 16(4), 89-98.

10.11112/jksmi.2012.16.4.089
14

Mander, J. B., Priestley M. J. N. and Park, R. (1988a) Theoretical Stress-Strain Model for Confined Concrete, Journal of Structural Engineering, ASCE, 1804-1825.

10.1061/(ASCE)0733-9445(1988)114:8(1804)
15

Mander, J. B., Priestley M. J. N. and Park, R. (1988b) Observed Stress-Strain Behavior of Confined Concrete, Journal of Structural Engineering, ASCE, 1827-1849.

10.1061/(ASCE)0733-9445(1988)114:8(1827)
16

Martinez-Morales, Salvador (1983) Spirally-Reinforced High-Strength Concrete Columns, A doctoral thesis, Cornell University.

17

Moon, C. H. (2010) A Stress-Strain Model of High-Strength Concrete Confined with High-Strength Transverse Reinforcement, a Master's thesis, SungKyunKwan University.

18

Razvi, Salim R. and Saatcioglu Murat (1999a) Confinement Model for High-Strength Concrete, Journal of Structural Engineering, ASCE, 281-289.

10.1061/(ASCE)0733-9445(1999)125:3(281)
19

Razvi, Salim R. and Saatcioglu Murat (1999b) Circular High-Strength Concrete Columns under Concentric Compression, ACI Structural Journal 817-825.

20

Richart, F. E., Brandtzaeg, A. and Brown, R. L. (1928) A Study of the Failure of Conrete under Combined Compressive Stress, University of Illinois.

21

Sakino, K. (1993) Investigation on Confined HSC Columns, Research Report of the Integrated Research (NewRC) Project submitted to Ministry of Construction of Japan.

22

Scott, B. D., Park, R. and Priestley, M. J. N. (1982) Stress-Strain Behavior of Concrete Confined by Overlapping Hoops at Low and High Strain Rates, ACI Journal 79(2), 13-273.

10.14359/10875
23

Sun, Y. P. and Sakino, K. (2000) A Compressive Stress-Strain Model for High-Strength Concrete Confined by Circular Transverse Reinforcement, Composite and Hybrid Structures: Proceeding of the Sixth ASCCS International Conference on Steel-Concrete Composite Structures, Los Angeles, Califonia, U.S.A., 1067-1074.

24

Yoo, H. J. (2010) A Study on Confinement Effect of High Strength Spirals, a Master's thesis, Yeungnam University.

Information
  • Publisher :Korean Institute of Bridge and Structural Engineers
  • Publisher(Ko) :한국교량및구조공학회
  • Journal Title :Journal of Structure Research and Practice
  • Journal Title(Ko) :한국교량및구조공학회 논문집
  • Volume : 2
  • No :1
  • Pages :30-38
  • Received Date : 2024-06-04
  • Revised Date : 2024-06-19
  • Accepted Date : 2024-06-24
  • DOI :https://doi.org/10.22725/JSRP.2024.2.1.30
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