南京“和记洋行”化验间减震加固工程实例分析

Case Study of Shock Absorption and Reinforcement Engineering of the Hutchison International Company Laboratory in Nanjing

南京“和记洋行”化验间为钢筋混凝土框架结构,抗震鉴定结果为不满足《建筑抗震鉴定标准》对A类钢筋混凝土房屋抗震鉴定的要求,采用阻尼器减震[1]加固法对其进行加固。加固计算时,先采用PKPM对其试计算,确定合适的附加阻尼比和附加刚度,后采用ETABS计算软件具体分析,确定阻尼器的数量、型号和位置。为了解阻尼器对化验间的减震效果,对加固前后结构的层间位移角、梁柱内力值等指标进行对比分析,结果表明加固后结构的层间位移角、梁柱内力值明显降低,阻尼器减震加固法有良好的加固效果。

The laboratory of Hutchison International Company in Nanjing is A reinforced concrete frame structure, and the seismic evaluation result is that it does not meet the requirements of the seismic Evaluation Standard of Building for Class A reinforced concrete buildings, so the damping[1]reinforcement method is adopted to reinforce it. In the calculation of reinforcement, PKPM is used to test calculate it first to determine the appropriate additional damping ratio and additional stiffness, and then ETABS calculation software is used for specific analysis to determine the number, model and position of the damper. In order to understand the damping effect of the damper on the laboratory, the indicators such as the inter-storey displacement Angle and the internal force value of the beam and column before and after the reinforcement are compared and analyzed.The results show that the inter-storey displacement Angle and the internal force value of the beam and column after the reinforcement are obviously reduced, and the damping and reinforcement method of the damper has a good reinforcement effect.