Investigation of Dynamic Response on Composite Beam to apply to Seismic Performance in Steel building

组合梁动力响应研究应用于钢结构抗震性能

• 批准号: 24760442
• 负责人: SHIMADA Yuko
• 金额: $ 2.83万
• 依托单位: Chiba University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24760442/
• 关键词: 合成梁; せん断力伝達; 耐力評価; モーメント伝達効率; 動的載荷; 歪速度; 動的実験

According to previous studies and experiments on cyclic behavior of steel beam with slab and composite effect, I conducted two; one is push-out tests of stud-bolt in various strain-rate, and the other is consideration of stress condition at the maximum bending strength. In push-out tests, the maximum shear strength in a stud-bolt increased as strain-rate became large. Moreover, under high-speed loading, crack did not appear on concrete and stud-bolt is easy to fracture.However, it is not clear the relationship between increasing of strength and dynamic loading not only the behavior of stud-bolt under high-speed loading. I considered stress transfer and applied condition in experimental formula on the maximum bending strength under static loading. From the consideration, it is clear importance of plastic neutral position, the effective width and bearing strength in slab.

本文在前人研究的基础上，结合组合效应对带板钢梁循环性能的影响，进行了两个方面的试验研究：一是不同应变率下的栓钉推出试验，二是考虑最大抗弯强度时的应力状态。在推出试验中，螺栓的最大抗剪强度随着应变率的增大而增大。另外，在高速荷载作用下，混凝土不产生裂纹，螺栓容易断裂，但螺栓强度的提高与动荷载的关系并不清楚，不仅是螺栓在高速荷载作用下的性能。在静载下最大弯曲强度的经验公式中考虑了应力传递和施加条件。由此可见，板的塑性中性位置、板的有效宽度和承载力的重要性。