集装箱码头岸桥结构的动力相似分析与试验验证
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摘要
基于动力相似理论,推导了集装箱码头岸边起重机(简称岸桥)原型结构和1∶50缩比模型的相似比例因子;利用锤击模态试验和地震振动台试验分别获取了1∶50缩比模型的动态特性和地震响应;同时,使用ANSYS软件对原型结构相应的动态行为也进行了系统地分析.研究结果表明,1∶50缩比模型能够准确地预测出其原型结构的动态特性和地震响应,并能为后续的研究提供一个可靠的试验模型.
Based on the dynamic similitude theory,a detailed deduction process on the similarity scale factors between the prototype and 1∶50 scale model was presented.A hammering modal test and a series of seismic shaking table tests were successively carried out to obtain the dynamic characteristics and the seismic responses of this 1∶50 scale model.Meanwhile,the corresponding dynamic behaviors of the prototype were also systematically analyzed by the use of the ANSYS software.The investigation results indicate that the 1∶50 scale model can accurately predict the dynamic performances and seismic responses of the prototype with small error and can provide a reliable testing model for the following studies.
Based on the dynamic similitude theory,a detailed deduction process on the similarity scale factors between the prototype and 1∶50 scale model was presented.A hammering modal test and a series of seismic shaking table tests were successively carried out to obtain the dynamic characteristics and the seismic responses of this 1∶50 scale model.Meanwhile,the corresponding dynamic behaviors of the prototype were also systematically analyzed by the use of the ANSYS software.The investigation results indicate that the 1∶50 scale model can accurately predict the dynamic performances and seismic responses of the prototype with small error and can provide a reliable testing model for the following studies.
引文
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[2]Viot P,Balle’re L,Guillaumat L,et al.Scale effectson the response of composite structures under impactloading[J].Engineering Fracture Mechanics,2008,75(9):2725-2736.
[3]Zhu W D,Teppo L J.Design and analysis of a scaledmodel of a high-rise,high-speed elevator[J].Journalof Sound and Vibration,2003,264(3):707-731.
[4]Kima N S,Lee J H,Chang S P.Equivalent multi-phase similitude law for pseudodynamic test on smallscale reinforced concrete models[J].EngineeringStructures,2009,31(4):834-846.
[5]刘鸿文.材料力学[M].4版.北京:高等教育出版社,2004:140-142.
[6]Wu J J.Finite element analysis and vibration testingof a three-dimensional crane structure[J].Measure-ment,2006,39(8):740-749.
[7]郑海霞,张淑珍,杨萍,等.基于ANSYS水轮机修复专用机器人模态分析[J].上海交通大学学报,2008,42(Sup.):155-157.ZHENG Hai-xia,ZHANG Shu-zhen,YANG Ping,et al.Modal analysis of special robot hydraulic tur-bine repair based on ANSYS[J].Journal of ShanghaiJiaotong University,2008,42(Sup.):155-157.
[8]Jacobs L D,DesRoches R,Leon R T.Shake tabletesting of container cranes[C]∥Proceedings of the14th World Conference on Earthquake engineering.Beijing:China Seismological Press,2008:12-17.
[9]Ghaemmaghami A R,Ghaemian M.Experimentalseismic investigation of Sefid-rud concrete buttressdam model on shaking table[J].Earthquake Engi-neering and Structural Dynamic,2008,37(5):809-823.
[10]JTJ225-98,水运工程抗震设计规范[S].
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