基于实测模型的通信铁塔抗震性能仿真分析
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摘要
针对目前通信铁塔抗震性能仿真分析结果存在较大误差的问题,提出基于实测模型进行仿真分析的方法.通过现场测试得到铁塔的动态参数,依据测得的动态参数对建成的有限元模型进行修正,使其能更加准确地反映铁塔的动力特性.依据相关标准,选用人工合成地震波和2条真实地震波对铁塔模型进行抗震性能分析.结果表明铁塔的响应位移和应力均小于标准要求值,满足抗震要求.
As to the issue that the error of anti-seismic performance simulation analysis on communication tower is large,a method based on measured model is proposed for the simulation analysis. According to the dynamic parameters of a tower obtained by field test,the finite element model is corrected to reflect the dynamic characteristics of the communication tower more accurately. According to the relevant standards,one artificially synthesized earthquake wave and two seismic recorded waves are used to simulate and analyze the anti-seismic performance of the tower model. The results indicate that the response displacement and stress of the tower are less than the requirement in the standards and the tower meets the anti-seismic requirements.
As to the issue that the error of anti-seismic performance simulation analysis on communication tower is large,a method based on measured model is proposed for the simulation analysis. According to the dynamic parameters of a tower obtained by field test,the finite element model is corrected to reflect the dynamic characteristics of the communication tower more accurately. According to the relevant standards,one artificially synthesized earthquake wave and two seismic recorded waves are used to simulate and analyze the anti-seismic performance of the tower model. The results indicate that the response displacement and stress of the tower are less than the requirement in the standards and the tower meets the anti-seismic requirements.
引文
[1]中华人民共和国信息产业部.移动通信工程钢塔桅设计规范:YD/T 5131—2005[S].
[2]汪江,杜晓峰,田万军,等.500 k V淮蚌线淮河大跨越输电塔振动测试与模态识别[J].中国电力,42(2):30-33.DOI:10.3969/j.issn.1004-9649.2009.02.007.WANG J,DU X F,TIAN W J,et al.Vibration testing and modal identification on 500 k V span transmission tower on Huai River[J].Electric Power,42(2):30-33.DOI:10.3969/j.issn.1004-9649.2009.02.007.
[3]刘丰.大跨度桥梁抗震分析中的有限元方法[J].中国科技信息,2007(19):46-47.DOI:10.3969/j.issn.1001-8972.2007.19.022.LIU F.The finite element method in theseismic analysis of large span bridge[J].China Science and Technology Information,2007(19):46-47.DOI:10.3969/j.issn.1001-8972.2007.19.022.
[4]孙正华,方平,毛东建,等.基于现场检测及有限元分析的铁塔工程安全性评估[J].特种结构,2012,29(3):98-103.SUN Z H,FANG P,MAO D J,et al.Tower engineering safety assessment based on the field test and finite element analysis[J].Special Structures,2012,29(3):98-103.
[5]马荣鑫,许剑.大跨钢桁架拱桥地震响应有限元分析[J].计算机辅助工程,2014,23(6):103-107.DOI:10.13340/j.cae.2014.06.022.MA R X,XU J.Finite element analysis on seismic response of large-span steel arch bridge[J].Computer aided Engineering:2014,23(6):103-107.DOI:10.13340/j.cae.2014.06.022.
[6]李德葆,陆秋海.实验模态分析及其应用[M].北京:科学出版社:5-11.
[7]闫安志,祁丽丽.塔架结构模态特征及地震时程分析[J].河南理工大学学报(自然科学版),2013,32(6):736-740.DOI:10.3969/j.issn.1673-9787.2013.06.018.YAN A Z,QI L L.Modal characteristics and earthquake time history analysis for tower structure[J].Journal of Henan Polytechnic University(Natural Science),2013,32(6):736-740.DOI:10.3969/j.issn.1673-9787.2013.06.018.
[8]杨汉来.直线输电塔线体系抗震性能的动力研究[D].合肥:安徽建筑大学,2013:43-48.
[9]刘华峰,王钢.输电线路铁塔抗震性能分析[J].特种结构,2015,32(1):18-22.LIU H F,WANG G.Transmission line tower seismic performance analysis[J].Special structures,2015,32(1):18-22.
[10]UNGER J F.System identification and damage detection in civil engineering[D].Belgium Catholic University of Louvain,2002:27-29.
[2]汪江,杜晓峰,田万军,等.500 k V淮蚌线淮河大跨越输电塔振动测试与模态识别[J].中国电力,42(2):30-33.DOI:10.3969/j.issn.1004-9649.2009.02.007.WANG J,DU X F,TIAN W J,et al.Vibration testing and modal identification on 500 k V span transmission tower on Huai River[J].Electric Power,42(2):30-33.DOI:10.3969/j.issn.1004-9649.2009.02.007.
[3]刘丰.大跨度桥梁抗震分析中的有限元方法[J].中国科技信息,2007(19):46-47.DOI:10.3969/j.issn.1001-8972.2007.19.022.LIU F.The finite element method in theseismic analysis of large span bridge[J].China Science and Technology Information,2007(19):46-47.DOI:10.3969/j.issn.1001-8972.2007.19.022.
[4]孙正华,方平,毛东建,等.基于现场检测及有限元分析的铁塔工程安全性评估[J].特种结构,2012,29(3):98-103.SUN Z H,FANG P,MAO D J,et al.Tower engineering safety assessment based on the field test and finite element analysis[J].Special Structures,2012,29(3):98-103.
[5]马荣鑫,许剑.大跨钢桁架拱桥地震响应有限元分析[J].计算机辅助工程,2014,23(6):103-107.DOI:10.13340/j.cae.2014.06.022.MA R X,XU J.Finite element analysis on seismic response of large-span steel arch bridge[J].Computer aided Engineering:2014,23(6):103-107.DOI:10.13340/j.cae.2014.06.022.
[6]李德葆,陆秋海.实验模态分析及其应用[M].北京:科学出版社:5-11.
[7]闫安志,祁丽丽.塔架结构模态特征及地震时程分析[J].河南理工大学学报(自然科学版),2013,32(6):736-740.DOI:10.3969/j.issn.1673-9787.2013.06.018.YAN A Z,QI L L.Modal characteristics and earthquake time history analysis for tower structure[J].Journal of Henan Polytechnic University(Natural Science),2013,32(6):736-740.DOI:10.3969/j.issn.1673-9787.2013.06.018.
[8]杨汉来.直线输电塔线体系抗震性能的动力研究[D].合肥:安徽建筑大学,2013:43-48.
[9]刘华峰,王钢.输电线路铁塔抗震性能分析[J].特种结构,2015,32(1):18-22.LIU H F,WANG G.Transmission line tower seismic performance analysis[J].Special structures,2015,32(1):18-22.
[10]UNGER J F.System identification and damage detection in civil engineering[D].Belgium Catholic University of Louvain,2002:27-29.