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。...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Progress in Steel Building Structures, Tongji University
2023-12-01
|
| Series: | Jianzhu Gangjiegou Jinzhan |
| Subjects: | |
| Online Access: | http://steelpro.tongji.edu.cn/thesisDetails#10.13969/j.cnki.cn31-1893.2023.12.008 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|