RESPONSE PREDICTION OF REINFORCED CONCRETE STRUCTURES CONTROLLED BY ENERGY DISSIPATING DEVICES AND EVALUATION OF NECESSARY AMOUNT OF DEVICES

耗能装置控制的钢筋混凝土结构响应预测及所需装置数量的评估

基本信息

批准号：
14350292
负责人：
INOUE Norio
金额：
$ 4.67万
依托单位：
TOHOKU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

项目摘要

In this study, response prediction procedure was proposed based on concept of energy response by the studies on earthquake response behaviors of reinforced concrete structures controlled by energy dissipating devices. And then, the evaluation method to calculate the amount of devices to limit the earthquake responses within acceptable damages, was proposed. Following results were obtained.A simple prediction method of maximum response of structure by corresponding the earthquake input energy to the structural dissipated energy, was proposed. And by extending this ideas, application to the structures controlled by viscous dampers was shown. In this procedure, damaging properties of earthquakes can be taken into the input energy, and structural properties (damping, hysteresis and so on) can be taken into the dissipated energy, therefore, this response prediction method will be used for various earthquakes and structures.To investigate the dynamic response behaviors and effect of dampers, … More shaking table test was performed to the steel frame specimen with viscoelastic damper. In this specimen, supporting members were applied to investigate the influence of stiffness of supporting braces to damper. And by the simulation analysis of test results, it is found that the four elements dashpot-spring model can simulate the frequency depending characteristics of viscoelastic dampers, and that applied analysis model considering supporting members are appropriate.Proposed response prediction procedure is applied to reinforced concrete structures with viscoelastic damper and multi story reinforced concrete structures with viscous damper, and response displacement can be predicted almost suitably. By the investigation of response velocity, that affects to energy dissipating capacity of viscous or viscoelastic damper, it is found that response velocity can be estimated by response period that is actual vibration period, and that response period relates to the displacement response spectrum of earthquakes. Less

本研究通过对消能装置控制下的钢筋混凝土结构地震响应行为的研究，提出了基于能量响应概念的响应预测程序，并计算了限制地震响应的装置数量的评价方法。提出了一种将地震输入能量与结构耗散能量相对应的结构最大响应的简单预测方法，并将该方法推广到粘性阻尼器控制的结构中。在此过程中，损坏。地震的特性可以考虑到输入能量，结构特性（阻尼、滞后等）可以考虑到耗散能量，因此，这种响应预测方法将用于各种地震和结构。研究动力响应对带有粘弹性阻尼器的钢框架试件进行了振动台试验，研究了支撑构件的刚度对阻尼器的影响，并对试验结果进行了模拟分析。 ,结果发现，四元阻尼器-弹簧模型可以模拟粘弹性阻尼器的频率相关特性，并且考虑支撑构件的应用分析模型是合适的。所提出的响应预测程序适用于粘弹性阻尼器和多层钢筋混凝土的钢筋混凝土结构通过研究响应速度对粘性或粘弹性阻尼器能量耗散能力的影响，可以估计响应速度。响应周期即为实际振动周期，该响应周期与地震的位移反应谱相关。