多类型建筑物周期预测公式的实测对比研究
An Empirical Comparative Study of Period Prediction Formulas for Multiple Types of Buildings
实测已建建筑物的动力特性并对相关周期预测公式进行检验,对于城市更新中既有建筑物的状态评估有重要的意义。为此,对同济大学四平路校区内22栋不同结构类型的建筑开展了脉动法测试,由随机减量法识别建筑物的自振周期与阻尼比,汇总了识别结果。将建筑物自振周期实测值与17个自振周期预测公式的结构相比较,根据对比结果推荐了针对不同结构类型的周期预测公式。
Measuring the dynamic characteristics of constructed buildings and testing the related period prediction formulas are of great significance for the condition assessment of existing buildings in urban renewal. To this end, pulsation method tests were carried out on 22 buildings of different structural types in the Siping Road Campus of Tongji University, and the natural period and damping ratio of the buildings were identified by the random decrement technique, and the identification results were summarized. The measured values of the natural period of the buildings were compared with 17 natural period prediction formulas for the structures, and the period prediction formulas for different structural types were recommended based on the comparison results.
自振周期 / 脉动法 / 随机减量法 / 阻尼比 / 预测公式
natural period / pulsation method / random decrement technique / damping ratio / prediction formula
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