水电站地面厂房抗震措施研究
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摘要
为研究对厂房结构抗震合理适用的抗震措施,选取某实际厂房结构,建立三维有限元模型,借助ABAQUS有限元软件,采用时程分析法进行结构动力计算。调整Koyna水平地震波和某人工地震波加速度峰值为0.246 g作为地震荷载。结果表明对于尾水平台较高且主副厂房之间无分缝的水电站厂房,不宜将屋面板和桁架与排架柱铰接,屋顶简支对上下游排架和上下游墙的抗震更为有利;在水电站地面厂房中设置黏滞阻尼器是有效的抗震措施,可以增强上游排架和上游墙以及下游排架的抗震能力,但应重点考虑阻尼器支撑高度。
A three-dimensional finite element model of actual hydropower house structure was developed to study its effective aseismic measure.Dynamic structural analysis was made with an ABAQUS software and time-historical analytical method,by using seismic loads of Koyna earthquake transverse ground acceleration and artifical earthquake ground acceleration whose peak values were adjusted to 0.246g.The results show that if there is no joint between the main powerhouse structure and its service area of high draft tube deck,a freely-supported roof slab is advantageous in earthquake-resistance capacity of framed bent and powerhouse wall in comparison with a hinged support type.In this case,installation of viscous dashpots in the house is an effective aseismic measure in enhancing the earthquake-resistance capacity of framed bent and powerhouse wall,and the support height of the dashpots is a crucial factor.
A three-dimensional finite element model of actual hydropower house structure was developed to study its effective aseismic measure.Dynamic structural analysis was made with an ABAQUS software and time-historical analytical method,by using seismic loads of Koyna earthquake transverse ground acceleration and artifical earthquake ground acceleration whose peak values were adjusted to 0.246g.The results show that if there is no joint between the main powerhouse structure and its service area of high draft tube deck,a freely-supported roof slab is advantageous in earthquake-resistance capacity of framed bent and powerhouse wall in comparison with a hinged support type.In this case,installation of viscous dashpots in the house is an effective aseismic measure in enhancing the earthquake-resistance capacity of framed bent and powerhouse wall,and the support height of the dashpots is a crucial factor.
引文
[1]裘民川.水电站厂房的抗震设计问题[J].工程抗震,1997,(2):1-5.QIU Minchuan.Issues regarding aseismic design of hydropower house[J].Earthguake Resistant Engineering,1997,(2):1-5.(inChinese)
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[8]刘逸敏,刘海波,陈尚建,等.某电厂主厂房抗震加固设计[J].武汉大学学报(工学版),2008,41(S1):28-31.LIU Yimin,LIU Haibo,CHEN Shangjian,et al.Aseismic reinforcement design of main power house of a power plant[J].Engineering Journal of Wuhan University,2008,41(S1):28-31.(in Chinese)
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[12]迟世春,林皋.拱坝的动力控制研究[J].世界地震工程,2002,18(1):1-8.CHI Shichun,LIN Gao.Dynamic control of arch dams[J].World Earthquake Engineering,2002,18(1):1-8.(in Chinese)
[13]罗秉艳,徐艳杰,王光纶.大岗山拱坝考虑阻尼器抗震措施的非线性动力反应分析[J].水力发电学报,2007,26(1):67-70.LUO Bingyan,XU Yanjie,WANG Guanglun.Nonlinear dynamic analysis of Dagangshan arch dam with considering damperreinforcement[J].Journal of Hydroelectric Engineering,2007,26(1):67-70.(in Chinese)
[14]李正英,李正良,汪之松,等.黏滞阻尼器拱桥结构减震控制研究[J].振动与冲击,2007,26(1):56-60.LI Zhengying,LI Zhengliang,WANG Zhisong,et al.Study on seismic response control of an arch bridge with viscous dampers[J].Journal of Vibration and Shock,2007,26(1):56-60.(in Chinese)
[15]张微敬,钱稼茹,沈顺高,等.北京A380机库采用黏滞阻尼器的减振控制分析[J].建筑结构学报,2009,30(2):1-7.ZHANG Weijing,QIAN Jiaru,SHEN Shungao,et al.Vibration reduction analyses of Beijing A380 hangar structure with viscousdampers[J].Journal of Building Structures,2009,30(2):1-7.(in Chinese)
[2]马震岳,董毓新,郭永刚,等.三峡水电站厂房结构动力分析与优化[J].水电能源科学,2000,18(3):26-28.MA Zhenyue,DONG Yuxin,GUO Yonggang,et al.Kinetic analysis and structural optimization of the buildings for the Three GorgesProject[J].Water Resources and Power,2000,18(3):26-28.(in Chinese)
[3]苏礼邦,刘云贺,李守义.灯泡贯流式水电站厂房坝段的抗震分析[J].西北农林科技大学学报(自然科学版),2007,35(7):202-206.SU Libang,LIU Yunhe,LI Shouyi.Analysis on the earthquake resistance of the factory monolith of bulb tubular power station[J].Journal of Northwest A&F University(Natural Science Edition),2007,35(7):202-206.(in Chinese)
[4]欧阳金惠,陈厚群,张超然,等.三峡电站15#机组厂房结构动力分析[J].中国水利水电科学研究院学报,2007,5(2):137-142.OUYANG Jinhui,CHEN Houqun,ZHANG Chaoran,et al.Dynamic response analysis on No.15 unit powerhouse structure in theThree Gorges Hydropower Station[J].Journal of China Institute of Water Resources and Hydropower Research,2007,5(2):137-142.(in Chinese)
[5]张辉东,王日宣,王元丰.大型水电站厂房结构地震时程响应非线性数值模拟[J].水力发电学报,2007,26(4):96-102.ZHANG Huidong,WANG Rixuan,WANG Yuanfeng.Seismic time history and non-linear numerical simulation of large-scale power-house structure[J].Journal of Hydroelectric Engineering,2007,26(4):96-102.(in Chinese)
[6]王海军,练继建,王日宣.水电站厂房结构地震响应非线性分析[J].水电能源科学,2008,26(3):88-91.WANG Haijun,LIAN Jijian,WANG Rixuan.Seismic response nonlinear analysis of hydro powerhouse structure[J].WaterResources and Power,2008,26(3):88-91.(in Chinese)
[7]卢海涛,滕文川.工业厂房抗震加固新技术探讨[J].特种结构,2006,23(4):101-104.LU Haitao,TENG Wenchuan.The discussion about new technology of industrial workshop aseismatic reinforcing[J].SpecialStructures,2006,23(4):101-104.(in Chinese)
[8]刘逸敏,刘海波,陈尚建,等.某电厂主厂房抗震加固设计[J].武汉大学学报(工学版),2008,41(S1):28-31.LIU Yimin,LIU Haibo,CHEN Shangjian,et al.Aseismic reinforcement design of main power house of a power plant[J].Engineering Journal of Wuhan University,2008,41(S1):28-31.(in Chinese)
[9]章海斌.火电厂钢结构主厂房抗震分析[D].杭州:浙江大学硕士专业学位论文,2009.ZHANG Haibin.Aseismic analysis on steel frame structure about main plant of thermal power plant[D].Hangzhou:MasterDissertation,Zhejiang University,2009.(in Chinese)
[10]周云.耗能减震加固技术与设计方法[M].北京:科学出版社,2006.ZHOU Yun.Strengthening technology and design method of dissipation methodology[M].Beijing:Science Press,2006.(in Chinese)
[11]中国水利水电科学研究院.水工建筑物抗震设计规范(DL5073-1997)[S].北京:中国电力出版社,1997.China Institute of Water Resources and Hydropower Research.Specifications for seismic design of hydraulic structures(DL 5073-1997)[S].Beijing:China Electric Power Press,1997.(in Chinese)
[12]迟世春,林皋.拱坝的动力控制研究[J].世界地震工程,2002,18(1):1-8.CHI Shichun,LIN Gao.Dynamic control of arch dams[J].World Earthquake Engineering,2002,18(1):1-8.(in Chinese)
[13]罗秉艳,徐艳杰,王光纶.大岗山拱坝考虑阻尼器抗震措施的非线性动力反应分析[J].水力发电学报,2007,26(1):67-70.LUO Bingyan,XU Yanjie,WANG Guanglun.Nonlinear dynamic analysis of Dagangshan arch dam with considering damperreinforcement[J].Journal of Hydroelectric Engineering,2007,26(1):67-70.(in Chinese)
[14]李正英,李正良,汪之松,等.黏滞阻尼器拱桥结构减震控制研究[J].振动与冲击,2007,26(1):56-60.LI Zhengying,LI Zhengliang,WANG Zhisong,et al.Study on seismic response control of an arch bridge with viscous dampers[J].Journal of Vibration and Shock,2007,26(1):56-60.(in Chinese)
[15]张微敬,钱稼茹,沈顺高,等.北京A380机库采用黏滞阻尼器的减振控制分析[J].建筑结构学报,2009,30(2):1-7.ZHANG Weijing,QIAN Jiaru,SHEN Shungao,et al.Vibration reduction analyses of Beijing A380 hangar structure with viscousdampers[J].Journal of Building Structures,2009,30(2):1-7.(in Chinese)
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