| 引用本文: | 王元清,刘晓玲,刘明,李文斌,班慧勇,王玉银.翼缘纵向变厚度工型截面梁变形性能试验[J].哈尔滨工业大学学报,2017,49(12):24.DOI:10.11918/j.issn.0367-6234.201612103 |
| WANG Yuanqing,LIU Xiaoling,LIU Ming,LI Wenbin,BAN Huiyong,WANG Yuyin.Experimental study on deformation performance of I-section beam with longitudinally variable thickness flanges[J].Journal of Harbin Institute of Technology,2017,49(12):24.DOI:10.11918/j.issn.0367-6234.201612103 |
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| 翼缘纵向变厚度工型截面梁变形性能试验 |
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王元清1,刘晓玲1,刘明2,李文斌2,班慧勇1,王玉银3
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(1.土木工程安全与耐久教育部重点试验室(清华大学),北京100084; 2.鞍钢股份产品发展部,辽宁 鞍山114009;3.哈尔滨工业大学 土木工程学院,哈尔滨150090)
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| 摘要: |
| 为研究翼缘纵向变厚度工型截面简支梁的变形性能，对2根翼缘纵向变厚度工型截面梁与2根等厚度梁进行静力加载对比试验，同时采用有限元软件ANSYS进行数值模拟.变厚度梁翼缘材料为Q345GJC等级纵向变厚度钢板，加载方式包括单点加载和两点加载.试验结果表明：试件均发生明显的板件局部屈曲；采用翼缘纵向变厚度工型截面简支梁，不仅可以在保证承载力的情况下大大减少用钢量，而且可以获得更大的强度储备；也可以达到密实截面的变形要求，满足塑性设计要求.有限元结果与试验结果吻合良好.该试验结果可为翼缘纵向变厚度工型截面钢梁的塑性变形设计提供依据.
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| 关键词: 翼缘纵向变厚度工型截面简支梁 纵向变厚度钢板 变形性能 密实截面 试验研究 |
| DOI：10.11918/j.issn.0367-6234.201612103 |
| 分类号:TU391 |
| 文献标识码:A |
| 基金项目:国家自然科学基金重点项目(51038006) |
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| Experimental study on deformation performance of I-section beam with longitudinally variable thickness flanges |
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WANG Yuanqing1,LIU Xiaoling1,LIU Ming2,LI Wenbin2,BAN Huiyong1,WANG Yuyin3
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(1.Key Laboratory of Civil Engineering Safety and Durability (Tsinghua University), Ministry of Education, Beijing 100084, China; 2.Product Development Department, Anshan Iron & Steel, Anshan 114009, Liaoning, China; 3.School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China)
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| Abstract: |
| To study the deformation performance of I-section beam with longitudinally variable thickness flanges, 2 welded I-section variable thickness steel beams and 2 normal beams under static loading were conducted, and corresponding numerical simulation was performed using the ANSYS. The special material of the flanges was longitudinally profiled steel plates of Q345GJC, and single point loading and two point loading were adopted respectively. All of the four specimens occurred local buckling when the lateral displacement was constrained. The results show that the beam could not only ensure the bearing capacity with less steel but also safety margin, and also can meet the deformation requirements of compact cross section, compared with the beam with uniform thickness. The finite element results are in good agreement with the test results. The test results can be used for the plastic design of I-section beam with longitudinally variable thickness flanges.
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| Key words: I-section beam with longitudinally variable thickness flanges longitudinally profiled steel plate deformation performance compact cross section experimental investigation |
