四组合焊接锚板型地脚螺栓抗拔承载力试验研究
为了满足工程结构与基础连接的承载力及变形要求,通常采用多个地脚螺栓组合锚固,正方形布置四组合地脚螺栓是常用的地脚螺栓形式。设计并制作不同间距、不同锚固长度的正方形布置四组合焊接锚板型地脚螺栓抗拔承载力试件,研究其抗拔荷载-变形特性及破坏模式,并与焊接锚板型单个地脚螺栓的试验结果进行对比。结果表明,锚固长度较小时四组合地脚螺栓群主要发生混凝土开裂后锚固失效,当锚固长度达到20d时地脚螺栓群发生屈服并达到极限抗拉承载力;设置组合型地脚螺栓群可以极大地提高地脚螺栓的极限抗拔承载力。开展四组合焊接锚板型地脚螺栓的抗拔承载力模拟分析,考察上拔受力时传力机理及其承载力变化规律。现有文献规范计算结果相对保守...
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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
2021-01-01
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| Series: | Jianzhu Gangjiegou Jinzhan |
| Subjects: | |
| Online Access: | http://steelpro.tongji.edu.cn/thesisDetails#10.13969/j.cnki.cn31-1893.2021.04.007 |
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