摘要
振动台试验中,经过相似理论设计的缩尺模型,经历一系列特定顺序地震波的输入,激励起模型结构的动力非线性行为,来研究和评价结构的抗震性能。因此对于表现出非线性行为的模型结构来说,振动台试验是个不可逆过程。因此如何选择地震波,以及如何确定地震波的输入顺序,对振动台试验成功与否,显得尤为重要。重点介绍振动台试验的选波方法以及地震波的输入顺序,并将该方法应用到再生混凝土框架模型振动台试验,通过试验结果验证了该方法的正确性。试验结果表明,通过该方法选波,能准确合理地评价结构的抗震行为。
In shaking table tests, the scaled-down model designed through the theory of similarity is excited by the selected earthquake waves in a specified sequence to the nonlinear stage in the structural seismic performances. Due to the nonlinear history of the model, s order to study and evaluate baking table test is an irre- versible process. Then how to select the input and determine the input sequence is very important to the suc- cess of the shaking table test. This paper puts forward the method of wave selection and determination of the input sequence. The shaking table test of a recycled reinforced concrete frame is used to verify the method. The experimental results show that the seismic performance of the structure could be accurately evaluated by the selected waves.
出处
《结构工程师》
北大核心
2012年第6期60-65,共6页
Structural Engineers
基金
国家自然科学基金资助项目(51078274)
中日重大合作项目(51022140006)
北京市科技计划重大项目(D09050600370000)
关键词
输入顺序
选波
振动台试验
非线性行为
input sequence, wave selection, shaking table test, nonlinear behavior
