热-湿-力耦合作用对高温后方钢管混凝土短柱轴压力学性能影响试验研究
火灾发生时钢管混凝土内部会产生水蒸气，为探讨热-湿-力耦合作用对高温后方钢管混凝土轴压力学性能的影响，进行10根高温后方形钢管混凝土短柱轴压力学性能试验，研究排气孔数量、布置位置、轴压比和升温时间等参数对破坏形态、轴压刚度与剩余承载力等力学性能的影响。试验结果表明，破坏形态表现为压溃破坏；在其他参数相同情况下，与升温前相比，随排气孔数量从2个增加至4个和6个，轴压刚度分别降低了69.1%、73.3%、76.4%，剩余承载力分别降低了15.8%、16.2%、21.7%。轴压刚度随轴压比增大而降低；随升温时间的延长，剩余承载力先随轴压比增大而增大，后随之增大而减小。研究结果可为钢管混凝土柱的抗火设...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Progress in Steel Building Structures, Tongji University
2024-01-01
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| Series: | Jianzhu Gangjiegou Jinzhan |
| Subjects: | |
| Online Access: | http://steelpro.tongji.edu.cn/thesisDetails?columnId=55201084&Fpath=home&index=0 |
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