| 梁侧锚固钢板法加固混凝土梁的非线性有限元分析 |
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| 引用本文： | 吴振丽,陆洲导,李凌志,张佳旭.梁侧锚固钢板法加固混凝土梁的非线性有限元分析[J].同济大学学报(自然科学版),2019,47(7):0906-0913. |
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| 作者姓名： | 吴振丽 陆洲导 李凌志 张佳旭 |
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| 作者单位： | 同济大学 土木工程学院, 上海 200092,同济大学 土木工程学院, 上海 200092,同济大学 土木工程学院, 上海 200092,同济大学 土木工程学院, 上海 200092 |
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| 基金项目： | 国家自然科学基金项目（51378397） |
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| 摘 要： | 以4根梁侧锚固钢板加固混凝土梁(BSP梁)受剪性能试验研究为基础,基于弹塑性有限元软件OpenSees,建立了BSP梁的非线性有限元模型,模拟了构件加载全过程和受剪破坏时的受力性能.模型中考虑了材料的非线性、钢板和混凝土梁交界面上滑移等.计算结果与试验结果吻合良好.并对影响BSP梁性能的主要参数进行分析,包括锚栓行数、纵向锚固间距、钢板高度、钢板厚度、钢板屈服强度、锚栓直径及混凝土强度等,得出了各参数对BSP梁受剪承载力和纵横向滑移的影响规律,为BSP法加固设计提供了依据.
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| 关 键 词： | 梁侧锚固钢板 滑移 受剪承载力 有限元分析 |
| 收稿时间： | 2018/7/11 0:00:00 |
| 修稿时间： | 2019/4/16 0:00:00 |
Non-linear Finite Element Analysis of Bolted Side-plated Beams |
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| WU Zhenli,LU Zhoudao,LI Lingzhi and ZHANG Jiaxu.Non-linear Finite Element Analysis of Bolted Side-plated Beams[J].Journal of Tongji University(Natural Science),2019,47(7):0906-0913. |
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| Authors: | WU Zhenli LU Zhoudao LI Lingzhi and ZHANG Jiaxu |
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| Institution: | College of Civil Engineering, Tongji University, Shanghai 200092, China,College of Civil Engineering, Tongji University, Shanghai 200092, China,College of Civil Engineering, Tongji University, Shanghai 200092, China and College of Civil Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | Based on the experimental study of 4 bolted-side plates (BSP) beams, a numerical finite element analysis using OpenSees was conducted on the entire loading process and the shear failure of BSP beams.The nonlinear behaviors of materials and slip model on the interface between steel plate and concrete beam were taken into account. The results of the finite element analysis were found to be in good agreement with the experimental results. The main parameters affecting the behavior of BSP beams were analyzed, including the number of rows of anchor bolts, anchor bolt spacing along the beam, steel plate depth, steel plate thickness, yield strength of steel plate, anchor bolt diameter, concrete strength and so on. The results show the influence of the parameters on the shear bearing capacity, longitudinal and transverse slip, which provides basis for the strengthening design of BSP beams. |
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