| 李大华,周恒,陈信堂,潘锐,张雪凤.不同加固方法对钢筋混凝土结构的抗连续倒塌模拟分析[J].安徽建筑大学学报,2024,32(): |
| 不同加固方法对钢筋混凝土结构的抗连续倒塌模拟分析 |
| Simulation analysis of continuous collapse resistance of RC frame structures using different reinforcement methods |
| 投稿时间：2023-08-28 修订日期：2023-12-26 |
| DOI： |
| 中文关键词: 连续倒塌 RC框架 非线性静力分析 加腋梁 玻璃纤维加固 碳纤维加固 |
| 英文关键词: continuous collapse RC framework nonlinear static analysis haunched beam glass fiber reinforcement carbon fiber reinforcement |
| 基金项目:国家自然科学基金青年项目(51904006)；安徽省教育厅高校自然科学研究项目（KJ2021A0607）；马鞍山首建工程咨询有限公司与安徽建筑大学合作基金资助项目：（HYB20220091） |
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| 中文摘要: |
| 为研究不同加固方式对钢筋混凝土框架结构抗连续倒塌能力的影响，通过建立钢筋混凝土框架有限元模型进行对比分析，用五种不同加固方式分别进行加固，并模拟结构中柱遭遇偶然荷载后失效情况，对其进行非线性静力分析。ABAQUS模拟结果表明：加腋梁有利于节点区塑性铰的转移，使得框架在梁机制阶段的承载能力明显提升，粘贴碳纤维加固法、粘贴玻璃纤维加固法和增大梁截面加固法在悬索阶段对承载能力有所提升，增大柱截面加固法对结构抗连续倒塌能力提升很小。综合联系考虑材料成本及实际施工情况，各加固方式综合效益由高到低依次是：加腋梁加固法、粘贴玻璃纤维布加固法、粘贴碳纤维布加固法、增大梁截面法加固法、增大柱截面法加固法。 |
| 英文摘要: |
| In order to study the effect of different reinforcement methods on the resistance of reinforced concrete frame structure to continuous collapse capacity, a comparative analysis was carried out by establishing a finite element model of reinforced concrete frame, reinforcing it with five different reinforcement methods respectively and simulating the failure of columns in the structure after encountering incidental loads, and performing nonlinear static analysis of it.The results of ABAQUS simulation show that: the addition of axillary beams is conducive to the transfer of plastic hinges in nodal areas, which The load carrying capacity of the frame in the beam mechanism stage is obviously improved, the carbon fiber reinforcement method, the glass fiber reinforcement method and the beam cross-section reinforcement method are improved in the suspension stage, and the column cross-section reinforcement method has very little improvement in the structural resistance to successive collapses. Considering the material cost and the actual construction situation, the comprehensive benefits of each reinforcement method, in descending order, are: adding axillary beam reinforcement method, pasting glass fiber cloth reinforcement method, pasting carbon fiber cloth reinforcement method, enlarging beam cross-section method, and enlarging column cross-section reinforcement method. |
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