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为改善地铁周边振动环境和提高人们的生活环境质量,对砌体墙喷射玻璃纤维聚合物(GFRP)进行了试验研究和数值模拟。结果表明,喷射GFRP可以提高开裂荷载、极限荷载、极限位移和延性等,其中砌体墙弹性阶段刚度有明显提高,同时建立了砖混结构房屋外墙喷射GFRP的有限元模型,并分析了在列车荷载作用下的动力响应。结果表明:最大Z振级减小量可达2.694dB,具有良好的减振效果,是一种合理有效的减振措施。
In order to improve the vibration environment around the subway and improve the quality of people’s living environment, the experimental research and numerical simulation of GFRP sprayed on masonry walls were carried out. The results show that the GFRP injection can improve the cracking load, ultimate load, ultimate displacement and ductility. The stiffness of the masonry wall during the elastic phase is obviously improved. At the same time, the GFRP finite element model of the exterior wall of the masonry concrete building is established. Dynamic response of train under load. The results show that the maximum Z vibration level can be reduced by 2.694dB, which has a good damping effect and is a reasonable and effective vibration reduction measure.