| 钢结构房屋动力特性脉动法测试研究 |
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| 引用本文： | 施卫星,魏丹,韩瑞龙.钢结构房屋动力特性脉动法测试研究[J].地震工程与工程振动,2012,32(1):114-120. |
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| 作者姓名： | 施卫星 魏丹 韩瑞龙 |
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| 作者单位： | 同济大学结构工程与防灾研究所,上海,200092 |
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| 基金项目： | 国家重点基础研究发展计划973项目(2007CB714202) |
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| 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。
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| 关 键 词： | 钢结构 动力特性 脉动法 频率 阻尼比 经验公式 |
Field tests and research on the dynamic characteristics of steel structure buildings under ambient vibration |
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| SHI Weixing
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WEI Dan
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HAN Ruilong.Field tests and research on the dynamic characteristics of steel structure buildings under ambient vibration[J].Earthquake Engineering and Engineering Vibration,2012,32(1):114-120. |
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| Authors: | SHI Weixing WEI Dan HAN Ruilong |
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| Institution: | (Research Institute of Structure Engineering and Disaster Reduction,Tongji University,Shanghai 200092,China) |
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| Abstract: | 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. |
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| Keywords: | steel structure dynamic characteristics ambient vibration frequency damping ratio empirical formulas |
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