结构动力模型相似关系研究及验证
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摘要
结构模型的振动台试验是研究工程结构抗震性能的重要方法,正确处理模型与原型的相似关系以及由模型反应正确推导原型反应是很重要的问题。本文以4层框架结构为例,探讨了原型与人工质量模型和欠质量人工质量模型的相似关系,采用有限元分析程序计算原型与模型的地震反应,由模型地震反应反推原型地震反应,将原型地震反应的计算值和反推值从基本自振周期,加速度,速度,位移,基底剪力方面进行了比较,从而得出在弹性阶段内动力相似关系的正确性。
Vibroplatform test is an important method to study seismic performance of engineering structure.Processing the similarity relation and deducing response of original mold correctly are very important.Taking one four-story frame building as an example,this paperdiscussed the similarity relation of the original model and enough artificial mass and without enough artificial mass,and earthquake response of the original model and model were calculated by using finite element programe;response of original model according to response of the model was deduced;the calculation result from basic natural vibration period,acceleration,velocity,displacement and structural base shear were compared.Finally,the correctness of dynamic similitude law at the elastic stag was validated.
Vibroplatform test is an important method to study seismic performance of engineering structure.Processing the similarity relation and deducing response of original mold correctly are very important.Taking one four-story frame building as an example,this paperdiscussed the similarity relation of the original model and enough artificial mass and without enough artificial mass,and earthquake response of the original model and model were calculated by using finite element programe;response of original model according to response of the model was deduced;the calculation result from basic natural vibration period,acceleration,velocity,displacement and structural base shear were compared.Finally,the correctness of dynamic similitude law at the elastic stag was validated.
引文
[1]李德寅,王邦楣,林亚超.结构模型实验[M].北京:科学出版社,1996.
[2]迟世春,林少书.结构动力模型试验相似理论及其验证[J].世界地震工程,2004,20(4):11-12.
[3]杨树标,李荣华,刘建平.振动台试验模型和原型相似关系的理论研究[J].河北工程大学学报(自然科学版),2007,24(1):08-11.
[4]胡宝琳,李国强.框架结构层间位移的分析方法比较[J].河北工程大学学报(自然科学版),2007,24(1):17-19.
[5]杨树标,杨艳秋,高天宝,等.框架复合隔震结构地震响应分析[J].河北建筑科技学院学报,2006,23(1):23-26.
[6]孙武,杨树标,吴斌,等.并联复合隔震结构地震反应时程分析[J].河北建筑科技学院学报,2004,21(1):52-55.
[7]庄萌,王宗纲,钱稼茹.CNP1000安全壳1:10模型的模态分析[J].河北工程大学学报(自然科学版),2007,24(3):7-11.
[8]张敏政.地震模拟实验中相似律应用的若干问题[J].地震工程与工程振动,1997,17(2):52-58.
[2]迟世春,林少书.结构动力模型试验相似理论及其验证[J].世界地震工程,2004,20(4):11-12.
[3]杨树标,李荣华,刘建平.振动台试验模型和原型相似关系的理论研究[J].河北工程大学学报(自然科学版),2007,24(1):08-11.
[4]胡宝琳,李国强.框架结构层间位移的分析方法比较[J].河北工程大学学报(自然科学版),2007,24(1):17-19.
[5]杨树标,杨艳秋,高天宝,等.框架复合隔震结构地震响应分析[J].河北建筑科技学院学报,2006,23(1):23-26.
[6]孙武,杨树标,吴斌,等.并联复合隔震结构地震反应时程分析[J].河北建筑科技学院学报,2004,21(1):52-55.
[7]庄萌,王宗纲,钱稼茹.CNP1000安全壳1:10模型的模态分析[J].河北工程大学学报(自然科学版),2007,24(3):7-11.
[8]张敏政.地震模拟实验中相似律应用的若干问题[J].地震工程与工程振动,1997,17(2):52-58.
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