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Title |
Cyclic Loading Test for Exposed Column-base Plate Connections of Small-size Steel Structures
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Authors |
임우영(Woo-Young Lim) ; 유영찬(Young-Chan You) ; 유미나(Mi-Na Yoo) |
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DOI |
https://doi.org/10.11112/jksmi.2017.21.2.034 |
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Keywords |
소규모 철골조 ; 노출형 주각부 ; 반복가력 실험 ; 휨강도 ; 초기강성 Small-size steel structures ; Exposed column-base plate connections ; Cyclic loading test ; Flexural moment ; Initial stiffness |
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Abstract |
Cyclic loading tests for a total of nine test specimens were performed to evaluate the seismic performance of the exposed steel column-base plate connections. From the tests, flexural strength, deformation capacity, energy dissipation, and initial stiffness were investigated. The primary test parameters were the thickness of base-plate, embedment length of anchor bolt, the presence of hook, and rib plates. Test results showed that flexural behavior of column base-plate connection was substantially affected by the base-plate thickness, embedment length and the number of anchor bolts. On the other hand, the effect of rib plates on the increase of the flexural performance was not observed. The initial stiffness of the test specimens was about 15% of the flexural stiffness obtained by assuming that the support is fixed. As a result, even if the exposed column base-plate is designed in accordance with current design recommendations, in case that bond strength between concrete and the anchor bolts is not sufficient, the base-plate connection showed an unaccceptable load-displacement behavior.
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