摘要
对上海地区的10幢钢结构建筑进行脉动法测试并采集数据,得到广义钢结构房屋的动力特性。选取其中1栋典型建筑通过多次测试和数值模拟分别验证测试的稳定性和准确性。通过分析处理测试数据建立钢结构建筑一阶周期与结构层数或高度的线性关系式,并归纳总结了等效阻尼比的测试结果,为验证结构动力特性理论计算结果、钢结构建筑减震隔震设计以及鉴定、加固改造、损伤识别提供依据。
Data of structural dynamic tests under the condition of ambient vibration was obtained to reveal the natural vibration characteristics of ten steel structure buildings in Shanghai.In order to substantiate the accuracy of field testing and the stablity of testing equipment,one of the ten steel structures is selected to be tested many times and compared with theoretical calculation results.By collecting and analyzing the data,the empirical formulas are established between the structural storey or height and the natural periods of the buildings.This work also sums up the results of damping ratios of ten steel structures and accumulates original data for the design of seismic-isolation structures,seismic-energy-dissipating structures,damage identification and strengthening for the steel structures.
出处
《地震工程与工程振动》
CSCD
北大核心
2012年第1期114-120,共7页
Earthquake Engineering and Engineering Dynamics
基金
国家重点基础研究发展计划973项目(2007CB714202)
关键词
钢结构
动力特性
脉动法
频率
阻尼比
经验公式
steel structure
dynamic characteristics
ambient vibration
frequency
damping ratio
empirical formulas
