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An Experimental Study on Ductility of Fiber-Strengthening Concrete
In view of the mass brittle failures of reinforced concrete construction in Whenchuan earthquake, the ductility of construction was selected to be the research object. A group of the cyclic-loading experiment was carried out on seven shear-and-pressure concrete columns which mixed with different fiber types and various volume content, but same cross-section and reinforcement. In the process, the load-displacement curves of the columns were attained and the skeleton curves accordingly were drawn, together with the key values in various stages. Based on these, an analysis on various factors which affect the ductility of the columns is conducted. The results show that the ductility of columns is improved significantly and the appearance of plastic hinge is delayed, which are likely to avoid the occurrence of brittle failure in earthquake. The experimental result indicates the steel fiber-strengthening concrete possesses the strongest energy dissipation capacity, the carbon fiber improve ductility of the column, and the synthetic fibers can effectively delay emergence of the plastic hinge, but a lesser extent to improve the shear capacity of the column.
An Experimental Study on Ductility of Fiber-Strengthening Concrete
In view of the mass brittle failures of reinforced concrete construction in Whenchuan earthquake, the ductility of construction was selected to be the research object. A group of the cyclic-loading experiment was carried out on seven shear-and-pressure concrete columns which mixed with different fiber types and various volume content, but same cross-section and reinforcement. In the process, the load-displacement curves of the columns were attained and the skeleton curves accordingly were drawn, together with the key values in various stages. Based on these, an analysis on various factors which affect the ductility of the columns is conducted. The results show that the ductility of columns is improved significantly and the appearance of plastic hinge is delayed, which are likely to avoid the occurrence of brittle failure in earthquake. The experimental result indicates the steel fiber-strengthening concrete possesses the strongest energy dissipation capacity, the carbon fiber improve ductility of the column, and the synthetic fibers can effectively delay emergence of the plastic hinge, but a lesser extent to improve the shear capacity of the column.
An Experimental Study on Ductility of Fiber-Strengthening Concrete
Cai, Chuan-Guo (author) / Wei, Zhong-Xuan (author) / Yang, Xu-Pu (author)
2012
6 Seiten
Conference paper
English
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