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碳纤维加固倾斜RC框架结构振动台试验研究

Shaking Table Test Study on Inclined RC Frame Structure Strengthened with Carbon Fiber

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【作者】 魏晓刚; 法靖宇; 杨柳川; 李广慧; 刘晓丽; 王帅; 刘书贤;

【Author】 WEI Xiaogang;FA Jingyu;YANG Liuchuan;LI Guanghui;LIU Xiaoli;WANG Shuai;LIU Shuxian;College of Civil Engineering and Architecture, Zhengzhou University of Aeronautics;Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics,China Earthquake Administration;Institute of Civil Engineering of Realization in Zhengzhou;State Key Laboratory of Hydroscience and Engineering, Tsinghua University;School of Civil Engineering, Liaoning Technical University;

【机构】 郑州航空工业管理学院土木建筑学院; 中国地震局工程力学研究所中国地震局地震工程与工程振动重点实验室; 郑州意合达建筑科技研究院; 清华大学水沙科学与水利水电工程国家重点实验室; 辽宁工程技术大学土木工程学院;

【摘要】 为研究罕遇地震作用下煤矿采动建筑结构经碳纤维加固后的抗震性能,建立碳纤维加固后的煤矿采动建筑地震动力响应的缩尺模型以及基于振动台的动力破坏试验,文章重点探讨了罕遇地震作用下煤矿采动建筑的自振频率、加速度、顶层位移及层间位移角等因素的变化规律。研究得出:地震灾害加重了煤矿采动对建筑物的次生损伤;碳纤维加固后煤矿采动建筑的抗倾覆、抗震能力显著提高,有效提高了煤矿采动建筑结构的延性及整体稳定性,降低了煤矿采动和地震联合作用对建筑物的破坏性;碳纤维受到不同强度的地震作用时产生的加固效果也不同,在考虑对结构薄弱楼层进行加固设计的同时,也要充分考虑建筑物所处的地理位置和地震强度。

【Abstract】 In order to study the seismic performance of coal mining subsidence buildings strengthened with carbon fiber under rare earthquakes, a reduced-scale model of seismic dynamic response of coal mining subsidence buildings strengthened with carbon fiber was established. Based on the dynamic failure test of shaking table, the variation laws of natural frequency, acceleration, top displacement and interlayer displacementangle of coal mining buildings under rare earthquakes were emphatically discussed. It is concluded that the earthquake disaster aggravated the secondary damage to buildings caused by coal mining. After reinforcement, the anti-overturning and anti-seismic capacity of coal mining buildings is obviously improved. The ductility and overall stability of coal mining buildings are effectively improved by carbon fiber, and the damage of coal mining and earthquake on buildings is reduced. The reinforcement effect of carbon fiber varies with different earthquake intensities. When designing reinforcement for weak floors of the structure, the geographical location of the building and the susceptibility to earthquake intensities should also be fully considered.

【基金】 国家自然科学基金资助项目(41902266);中原科技创新领军人才项目(194200510015);河南省高校青年骨干教师培养计划资助项目(2021GGJS116);河南省高校实验室工作研究会计划支持项目(ULAHN202108);河南省科技攻关项目(202102300964,202102310256);河南省人才托举项目(2022HYTP011);河南省住房城乡建设科技计划项目(HNJS-2020-K38、K-1915)
  • 【文献出处】 郑州航空工业管理学院学报 ,Journal of Zhengzhou University of Aeronautics , 编辑部邮箱 ,2023年04期
  • 【分类号】TU375.4;TD82;TQ342.742
  • 【下载频次】19
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