비조밀단면을 이용한 SC 합성 기둥의 압축내력에 관한 비선형 유한요소해석 : Nonlinear Finite Element Analysis on the Axial Compressive Capacity of Steel-Concrete Composite Column Used by Non-Compact Section
- 발행기관 고려대학교 대학원
- 발행년도 2004
- 학위명 박사
- 학과 대학원:건축공학과
- 식별자(기타) DL:000014914436
- 서지제어번호 000045212892
초록/요약
There were several performed studies on Steel-Concrete (SC) Composite Column as effective column system to complement the weaknesses and maintain the merits of previous composite columns. SC Composite Column is a new composite column system composed of H-shape steel, which is made of built-up non-compact section member. The links are welded using round bars between two flanges and the space between two flanges is filled with concrete. There were recently several previous experimental studies on SC composite columns. The analytic study, however, for the columns of more various sizes is still necessary. So the analytical study was performed using finite element analysis program, ABAQUS v.6.3 and reflected the interaction of concrete and steel and the local buckling of steel flange using non-compact member. In this study, the main parameters for the analytical study are width-thickness ratio, link bar spacing, and link bar area. Through these analyses, the following results are obtained : (1) The result of axial compressive tests agrees well with the result obtained from the nonlinear analyses. so we can rely on the developed analytical models. (2) To design the large size of SC composite column composed of the non-compact section, it is desirable that width-thickness ratio does not exceed 25.0. (3) It is reliable that link area in the large size of SC composite column are more than 0.025 d․t. (4) It is reliable that link spacing in the large size of SC composite column place to the spacing of D/2 or the maximum 300 mm or less.
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CHAPTER 1 INTRODUCTION
1.1 Background and Objectives of Study
1.2 Scope of Study
CHAPTER 2 THEORETICAL CONSIDERATION OF SC COMPOSITE COLUMN
2.1 Summary of SC Composite Column
2.2 Strength Provisions for Composite Column
2.2.1 Limitation of Width-Thickness Ratio (b/t)
2.2.2 AISC-LRFD and Domestic AIK-LSD
2.2.3 Eurocode 4
2.2.4 ACI and AIJ
2.2.5 Equation Proposed by Tremblay
CHAPTER 3 SUMMARY OF EXISTING EXPERIMENTAL STUDY ON SC COMPOSITE COLUMN
3.1 Specimen Planning
3.1.1 Experimental Parameters
3.1.2 Specimens Manufacturing
3.2 Setting and Loading
3.3 Test Results and Analyses
3.3.1 Fracture Patterns of Specimens
3.3.2 Comparison between Test Loads and Reference Equations
3.3.3 Summary
CHAPTER 4 FINITE ELEMENT ANALYSIS OF SC COMPOSITE COLUMN
4.1 General
4.2 Finite Element Modeling
4.2.1 Analytical Modeling
4.2.2 Element Type
4.2.3 Material Nonlinearities
4.2.4 Finite Element Model of Composite Interaction
4.2.5 Initial Geometric Imperfection of Steel
4.2.6 Residual Stresses of Steel
4.3 Comparison between Analytical and Test Results
4.4 Explanation of Analytical Study
4.4.1 General
4.4.2 Analysis of Nonlinear Analytical Results
CHAPTER 5 CONCLUSIONS
