节点文献
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
【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.
【Key words】 shaking table test; carbon fiber reinforcement; rare earthquake; reinforcement method; seismic performance;
- 【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