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논문 기본 정보

자료유형
학술저널
저자정보
Zhang, Bo (College of Civil Engineering, Xi'an University of Architecture & Technology) Yang, Yong (College of Civil Engineering, Xi'an University of Architecture & Technology) Wei, Yuan-feng (College of Civil Engineering, Xi'an University of Architecture & Technology) Liu, Ru-yue (College of Civil Engineering, Xi'an University of Architecture & Technology) Ding, Chu (Department of Civil & Environmental Engineering, Virginia Tech) Zhang, Ke-qiang (Department of Civil Engineering & Architecture, Shaanxi University of Technology)
저널정보
테크노프레스 Structural engineering and mechanics : An international journal Structural engineering and mechanics : An international journal 제55권 제6호
발행연도
2015.1
수록면
1,139 - 1,155 (17page)

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In this study, a new retrofitting method for improving the seismic performance of reinforced concrete column was presented, in which prestressed steel strips were utilized as retrofitting stuff to confine the reinforced concrete column transversely. In order to figure out the seismic performance of concrete column specimen retrofitted by such prestressed steel strips methods, a series of quasi-static tests of five retrofitted specimens and two unconfined column specimen which acted as control specimens were conducted. Based on the test results, the seismic performance including the failure modes, hysteresis performance, ductility performance, energy dissipation and stiffness degradation of all these specimens were fully investigated and analyzed. And furthermore the influences of some key parameters such as the axial force ratios, shear span ratios and steel strips spacing on seismic performance of those retrofitted reinforced concrete column specimens were also studied. It was shown that the prestressed steel strips provided large transverse confining effect on reinforced concrete column specimens, which resulted in improving the shearing bearing capacity, ductility performance, deformation capacity and energy dissipation performance of retrofitted specimens effectively. In comparison to the specimen which was retrofitted by the carbon fiber reinforced plastics (CFRP) strips method, the seismic performance of the specimens retrofitted by the prestressed steel strips was a bit better, and with much less cost both in material and labor. From this research results, it can be concluded that this new retrofitting method is really useful and has significant advantages both in saving money and time over some other retrofitting methods.

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