Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on Seismic Performance of High-Strength Steel(POSTEN60, POSTEN80) Pipe-Section Piers using 3-Dimensional Elastic-Plastic Finite Deformation Analysis

3차원 탄소성 유한변위해석을 이용한 고강도(POSTEN60, POSTEN80) 원형강교각의 내진성능에 관한 연구

  • 장경호 (중앙대학교 공과대학 건설환경공학과) ;
  • 장갑철 (중앙대학교 일반대학원 토목공학과) ;
  • 강재훈 (중앙대학교 공과대학 건축학과)
  • Published : 2004.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

Recently, as steel structures become higher and more long-spanned, application of high-strength steels is increasing gradually. For seismic design of steel structures using high-strength steels(POSTEN60, POSTEN80), analytical method, can describe the large deformation and inelastic cyclic behavior generated by non-proportional cyclic loading, are required. In this paper, cyclic plasticity model was proposed by results of monotonic loading tests ant cyclic loading tests. Three-dimensional finite element analysis is developed by using proposed model and finite deformation theory and verified as compare with experiment result. Using 3-dimensional elastic-plastic finite deformation analysis, seismic analysis of high-strength steel pipe-section piers are carried out. Also, seismic performance of high-strength steel pipe-section piers in parameter of diameter-thickness ratio was clarified.

최근 강구조물의 장경간화 및 고층화로 인하여 고강도강재의 사용이 점차 증가하고 있다. 고강도강재(POSTEN60, POSTEN80)가 적용된 강구조물의 정확한 내진설계를 위해서는 반복하중 작용시 발생하는 대변형 및 비선형반복거동을 구현할 수 있는 해석기법이 필요하다. 본 연구에서는 고강도강재의 단조재하실험 및 반복하중실험을 기초하여 반복소성모델을 제안하였다. 제안된 소성모델과 유한변위이론을 적용한 3차원 탄소성 유한변위해석기법을 개발하였으며 이를 실험값과 비교하여 검증하였다. 검증된 3차원 탄소성 유한변위해석을 이용하여 고강도 원형강교각의 내진해석을 수행하였다. 또한, 고강도 원형강교각의 지름-두께비에 따른 내진성능을 명확히 하였다.

Keywords

References

  1. Tseng, N. T. and Lee, G. C., 'Simple Plasticity Model of Two-Surface Type,' J. Engng. Mech., ASCE, 109(3), 1983, pp. 795-810 https://doi.org/10.1061/(ASCE)0733-9399(1983)109:3(795)
  2. Kerig, R. D., 'A Practical Two Surface Plasticity Theory,' J. Appl. Mech. Trans. ASME, 42(3), 1975, pp. 641-646 https://doi.org/10.1115/1.3423656
  3. McDowell, D. L., 'A Two Surface Model for Transient Nonproportional Cyclic Plasticity : Part 1. Development of Appropriate Equation,' J. Appl. Mech.Trans. ASME, 52(2), 1985, pp. 298-302 https://doi.org/10.1115/1.3169044
  4. Nishimura, N., Ono, K. and Ikeuchi, T., 'A Constitutive Equation for Structural Steels Based on a Monotonic Loading Curve under Cyclic Loading,' Proc. JSCE, 513, 1992, pp. 27-38
  5. Shen, C., Mizuno, E. and Usami, T., 'A Generalized Two-Surface Model for Structural Steels under Cyclic Loading,' J. Struct. Mech. 471, 1992, pp. 23-33
  6. Gab Chul Jang, Kyong Ho Chang, Eun Seok Kim, and Eun Taik Lee., 'A Study on Application of Constitutive Equation of Steel Material to 3D-FEM,' The Ninth East Asia-Pacific Conference on Structural Engineering and Construction, 2003, CPM. pp. 80-86
  7. 장경호, 장갑철, 이은택, 'SM570강재의 반복소성모델의 정식화 및 3차원 탄소성 유한요소적용에 관한 연구', 한국지진공학회 논문집, 제8권, 제1호, 2004, pp.59-65 https://doi.org/10.5000/EESK.2004.8.1.059
  8. AASHTO(1997), Annual Book of ASTM Standards, Vol.03.01, pp. 523-537
  9. Dafalias, Y. F. and Popov, E. P., 'A Model for Nonlinearly Hardening Materials for Complex Loading,' Acta Mech., Vol.21, No.3, 1975, pp. 173-192 https://doi.org/10.1007/BF01181053
  10. Ge, H. B. and Usami, T., 'Ductility of Steel Short Cylinders in Compression and Bending,' J· Engng. Mech., ASCE, Vol.124(2), 1987, pp. 176-183
  11. Gao S., Usami T., and Ge H, ' Ductility Evaluation of Steel Bridge Piers with Pipe Sections,' J. Engng Mech, ASCE, 1998, pp. 260-267