| 高强度螺栓应变松弛的长时间试验监测 |
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| 引用本文： | 石永久,施刚,王元清,李少甫.高强度螺栓应变松弛的长时间试验监测[J].施工技术,2004,33(11):11-13. |
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| 作者姓名： | 石永久 施刚 王元清 李少甫 |
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| 作者单位： | 清华大学,北京,100084 |
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| 基金项目： | 教育部优秀青年教师资助计划 |
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| 摘 要： | 针对钢结构端板连接中高强度螺栓的应变松弛问题,对8个试件中的31个高强度螺栓的预拉应变进行了45h以上的长时间监测。对高强度螺栓终拧后预拉力随时间变化规律进行了对比,计算了预拉力松弛最终值,由此对钢结构端板连接中高强度螺栓预拉力及其设计值提出了建议。
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| 关 键 词： | 钢结构 端板连接 高强度螺栓 应变松弛 |
| 文章编号： | 1002-8498(2004)11-0011-03 |
| 修稿时间： | 2004年4月21日 |
Long-time Monitoring on Strain Relaxation of High Strength Bolts in End-plate Connections |
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| SHI Yong-jiu,SHI Gang,WANG Yuan-qing,LI Shao-fu.Long-time Monitoring on Strain Relaxation of High Strength Bolts in End-plate Connections[J].Construction Technology,2004,33(11):11-13. |
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| Authors: | SHI Yong-jiu SHI Gang WANG Yuan-qing LI Shao-fu |
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| Abstract: | In order to study the strain relaxation of high strength bolts in end-plate connections, the time-variation of pretension force of 31 high strength bolts in 8 specimens has been monitored for more than 45h.The time-dependent rule of pretension force of high strength bolts has been compared, and the final value of pretension force relaxation has been calculated.Proposals for the construction pretension force and the pretension force design value of high strength bolts in end-plate connections have been presented. |
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| Keywords: | steel structure end-plate connection high strength bolt strain relaxation |
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