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大型公共建筑和工业建筑常采用大层高RC框架结构,受其功能限制难以采用传统加固方式,采用消能减震加固时,可能仅实现部分楼层增设阻尼器。为实现预设目标,对具有大层高大跨度特征的RC框架仅在薄弱层增设黏滞阻尼器进行了模型振动台试验,并对模型在地震作用下的地震位移响应及动力特性进行对比研究。试验结果表明,在薄弱层增设黏滞阻尼器是实现此类结构抗震性能化的有效手段之一,可以有效的提高建筑的抗震性能。
Large-scale public buildings and industrial buildings often use large-storey high-RC frame structures. It is difficult to adopt conventional reinforcement methods due to their limited functions. When energy-absorbing and shock-absorbing reinforcement is used, dampers may only be added on some floors. In order to achieve the preset target, a vibratory damper was added to the RC frame with large layers and large span features to perform vibratory damper tests on the weak layer. The seismic displacement response and dynamic characteristics of the model under earthquake were compared. The test results show that adding a viscous damper in the weak layer is one of the effective means to achieve the seismic performance of this type of structure, which can effectively improve the seismic performance of the building.