负弯矩区钢-SFRC组合桥面板抗弯性能试验研究
设计制作了4个钢-SFRC组合桥面板试件,通过四点弯曲试验测试各试件的破坏模式、刚度、内力分布情况和延性等,研究配筋率、钢纤维体积率以及采用嵌入CFRP筋法加固对负弯矩区钢-SFRC组合桥面板抗弯性能的影响。结果表明:提高配筋率能够提高试件的刚度、开裂荷载和屈服荷载,但对极限荷载的影响较小;提高钢纤维体积率能够抑制裂纹的扩展并使试件的初始刚度提高8.5%左右;采用嵌入CFRP筋法加固能够有效减小截面应变,试件塑性能更充分地发展,加固试件均发生较明显的屈曲破坏,且组合桥面板在屈曲破坏前均能够较好地满足平截面假定,其延性提高了27%以上。...
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Main Authors: | , , , |
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Format: | Article |
Language: | zho |
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Editorial Department of Progress in Steel Building Structures, Tongji University
2023-12-01
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Series: | Jianzhu Gangjiegou Jinzhan |
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Online Access: | http://steelpro.tongji.edu.cn/thesisDetails#10.13969/j.cnki.cn31-1893.2023.12.008 |
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