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Eccentric Axial Load Test for High-Strength Composite Columns of Various Sectional Configurations
| 题名： | Eccentric Axial Load Test for High-Strength Composite Columns of Various Sectional Configurations |
| 正文语种： | 英文 |
| 作者： | Chang-Soo Kim; Hong-Gun Park; Ho-Jun Lee In-Rak Choi;Kyung-Soo Chung, Ph.D. |
| 作者单位： | School of Civil Engineering at Shandong, Jianzhu Univ;Seoul National Univ;Hoseo Univ., Asan-si |
| 关键词： | Composite column; Concrete-encased steel angle; Stiffened concrete-filled slender steel tube; High-strength steel; High-strength concrete; Eccentric loading; Metal and composite structures. |
| 摘要： | Composite columns of various sectional configurations are studied to maximize the contribution of high-strength steel under compression-flexural loading. For concrete-encased steel (CES) columns, steel angles were placed at four comers of the cross-section and connected by various types of transverse reinforcements. In the case of a concrete-filled steel tube (CFT) column, a slender steel tube was stiffened by welding longitudinal bars. To verify structural capacities, eccentric axial load tests were performed for three concrete-encased steel angle (CES-A) columns and a stiffened concrete-filled slender steel tube (S-CFT) column, using Grade 800 MPa steel and 100 MPa concrete. The CES-A columns showed good structural performance in strength, flexural stiffness, and ductility due to the high contribution and good confinement effect of the comer steel angles and transverse reinforcement. In the S-CFT column the welded longitudinal bars successfully restrained local buckling of the slender steel tube so that the full plastic strength of the composite section developed. DOI: 10.106l/(ASCE)ST.1943-541X.0001803. © 2017 American Society of Civil Engineers. |
| 出版日期： | 2017.08 |
| 出版年： | 2017 |
| 期刊名称： | Journal of Structural Engineering |
| 卷： | Vol.143 |
| 期： | NO.08 |
| 页码： | 04017075 |
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