冷弯薄壁不锈钢拼合箱形截面短柱轴压试验研究
为研究冷弯薄壁不锈钢拼合箱形截面短柱的受力性能，对14根拼合箱形截面短柱、6根单肢U或C形截面短柱及5根腹板开孔拼合截面短柱进行了轴压试验研究，试件材料为S30408奥氏体不锈钢。试验得到了不锈钢材料的力学性能指标和轴压试件的极限承载力、荷载-位移曲线，分析了试件的屈曲模式和破坏特征。试验结果表明：试件拼合方式对拼合试件极限承载力有明显影响，其中CC截面试件承载力最大，UU截面试件承载力最小；UU截面拼合箱形截面柱的极限承载力大于单肢组成构件的承载力之和；腹板开孔率小于0.5时试件极限承载力几乎无削弱。将美国ASCE/SEI 8-22规范现有计算方法与试验结果进行了对比，试验值低于计算方法的计...
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| Published in | Jianzhu Gangjiegou Jinzhan pp. 1 - 10 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
Editorial Department of Progress in Steel Building Structures, Tongji University
01.01.2024
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1671-9379 |
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| Abstract | 为研究冷弯薄壁不锈钢拼合箱形截面短柱的受力性能，对14根拼合箱形截面短柱、6根单肢U或C形截面短柱及5根腹板开孔拼合截面短柱进行了轴压试验研究，试件材料为S30408奥氏体不锈钢。试验得到了不锈钢材料的力学性能指标和轴压试件的极限承载力、荷载-位移曲线，分析了试件的屈曲模式和破坏特征。试验结果表明：试件拼合方式对拼合试件极限承载力有明显影响，其中CC截面试件承载力最大，UU截面试件承载力最小；UU截面拼合箱形截面柱的极限承载力大于单肢组成构件的承载力之和；腹板开孔率小于0.5时试件极限承载力几乎无削弱。将美国ASCE/SEI 8-22规范现有计算方法与试验结果进行了对比，试验值低于计算方法的计算值，ASCE/SEI 8-22规范方法不能直接用于计算冷弯薄壁不锈钢拼合箱形截面轴压短柱承载力。 |
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| AbstractList | 为研究冷弯薄壁不锈钢拼合箱形截面短柱的受力性能，对14根拼合箱形截面短柱、6根单肢U或C形截面短柱及5根腹板开孔拼合截面短柱进行了轴压试验研究，试件材料为S30408奥氏体不锈钢。试验得到了不锈钢材料的力学性能指标和轴压试件的极限承载力、荷载-位移曲线，分析了试件的屈曲模式和破坏特征。试验结果表明：试件拼合方式对拼合试件极限承载力有明显影响，其中CC截面试件承载力最大，UU截面试件承载力最小；UU截面拼合箱形截面柱的极限承载力大于单肢组成构件的承载力之和；腹板开孔率小于0.5时试件极限承载力几乎无削弱。将美国ASCE/SEI 8-22规范现有计算方法与试验结果进行了对比，试验值低于计算方法的计算值，ASCE/SEI 8-22规范方法不能直接用于计算冷弯薄壁不锈钢拼合箱形截面轴压短柱承载力。 |
| Author | 李海汀 靳春驰 张佳慧 段立平 |
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| SubjectTerms | 不锈钢 冷弯薄壁型钢 拼合截面柱 直接强度法 试验研究 |
| Title | 冷弯薄壁不锈钢拼合箱形截面短柱轴压试验研究 |
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