爆破振动特性对滞回耗能谱的影响研究
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摘要
为分析结构在爆破振动作用下的弹塑性能量反应,首先针对单自由度体系,建立了力学平衡方程;然后利用实测的爆破振动信号,通过数值计算并去噪获取不同频率的加速度时程曲线;最后将不同频率的加速度时程曲线进行人工调整,分析爆破振动3要素对滞回耗能谱的影响规律。研究表明:滞回耗能能综合的反应爆破振动3要素,特别是能够反应结构进入弹塑性阶段能量随爆破振动持续时间的累积效应。因此,可认为滞回耗能是反应爆破振动作用下结构塑性累积损伤的重要参数。
To analyze the elastic-plastic energy response of structure under the action of blasting vibration,firstly,mechanical equilibrium equation was established specific to single degree of freedom system;then,using measured blasting vibration signals,acceleration schedule curves of different frequency were obtained by numerical calculation and de-noising;finally,the acceleration schedule curves of different frequency needed some manual adjustment to analyze the influence of blasting vibration 3 elements on hysteretic energy spectrum.The researches show that hysteretic energy can reflect the blasting vibration 3 elements comprehensively,especially when structure enters into elastic-plastic stage,it can reflect the cumulative effect of energy along with the duration of blasting vibration.Therefore,it can be considered that hysteretic energy is an important parameter to reflect the structure plastic accumulated damage under the action of blasting vibration;it has essential meaning in theory and practical value in engineering.
To analyze the elastic-plastic energy response of structure under the action of blasting vibration,firstly,mechanical equilibrium equation was established specific to single degree of freedom system;then,using measured blasting vibration signals,acceleration schedule curves of different frequency were obtained by numerical calculation and de-noising;finally,the acceleration schedule curves of different frequency needed some manual adjustment to analyze the influence of blasting vibration 3 elements on hysteretic energy spectrum.The researches show that hysteretic energy can reflect the blasting vibration 3 elements comprehensively,especially when structure enters into elastic-plastic stage,it can reflect the cumulative effect of energy along with the duration of blasting vibration.Therefore,it can be considered that hysteretic energy is an important parameter to reflect the structure plastic accumulated damage under the action of blasting vibration;it has essential meaning in theory and practical value in engineering.
引文
[1]张义平.爆破震动信号的HHT分析与应用研究[D].长沙:中南大学,2006.
[2]阳生权.爆破震动累积效应理论和应用初步研究[D].长沙:中南大学,2002.
[3]MANFREDI G.Evaluation of seismic energy demand[J].Earthquake Engineering&Structural Dynamics,2001,30:485-499.
[4]翟长海,谢礼立,吴知丰.基于台湾集集地震的结构滞回耗能影响分析[J].哈尔滨工业大学学报,2006,38(1):59-62.[4]ZHAI Chang-hai,XIE Li-li,WU Zhi-feng.Influence anal-ysis on hysteretic-energy based on 1999 Chi-Chi TaiwanEarthquake[J].Journal of Harbin Institute of Technolo-gy,2006,38(1):59-62.(in Chinese)
[5]胡冗冗,王亚勇.地震动瞬时输入能量谱探讨[J].工程抗震,2004,26(1):9-13.[5]HU Rong-rong,WANG Ya-yong.An exploratory investiga-tion on the momentary input energy spectra under seismicaction[J].Earthquake Resistant Engineering,2004,26(1):9-13.(in Chinese)
[6]PARK YJ,ANG AHS.Mechanistic seismic damage modelfor reinforced concrete[J].Journal of Structural Engineer-ing(ASCE),1985,111(4):722-739.
[7]程光煜,叶列平.弹塑性SDOF系统的地震输入能量谱[J].工程力学,2008,25(2):28-39.[7]CHENG Guang-yu,YE Lie-ping.Earthquake input energysprctrum for inelastic sdof systems[J].Engineering Me-chanics,2008,25(2):28-39.(in Chinese)
[8]盛明强,罗奇峰.Northridge与ChiChi地震滞回耗能谱的比较[J].同济大学学报(自然科学版),2008,36(10):1314-1319.[8]SHENG Ming-qiang,LUO Qi-feng.Comparison of hyster-etic energy spectra in Northridge and ChiChi Earthquake[J].Journal of Tongji University(Natural Science),2008,36(10):1314-1319.(in Chinese)
[9]肖明葵,刘纲,白绍良,等.抗震结构的滞回耗能谱[J].世界地震工程,2002,18(3):110-115.[9]XIAO Ming-kui,LIU Gang,BAI Shao-liang,et al.The hyster-etic energy spectra of seismic structures[J].World Informa-tion on Earthquake Engineering,2002,18(3):110-115.(inChinese)
[10]郭子雄,杨勇.恢复力模型研究现状及存在问题[J].世界地震工程,2004,20(4):47-51.[10]GUO Zi-xiong,YANG Yong.State-of-the-art of restoringforce models for RC structures[J].World Information onEarthquake Engineering,2004,20(4):47-51.(in Chi-nese)
[11]徐建.建筑结构设计常见及疑难问题解析[M].北京:中国建筑工业出版社,2007.
[12]肖明葵.基于性能的抗震结构位移及能量反应分析方法研究[D].重庆:重庆大学,2004.
[13]徐赵东,郭迎庆.MATLAB语言在建筑抗震工程中的应用[M].北京:科学出版社,2004.
[14]盛明强.基于滞回耗能的结构抗震性能评价方法研究[D].上海:同济大学,2008.
[2]阳生权.爆破震动累积效应理论和应用初步研究[D].长沙:中南大学,2002.
[3]MANFREDI G.Evaluation of seismic energy demand[J].Earthquake Engineering&Structural Dynamics,2001,30:485-499.
[4]翟长海,谢礼立,吴知丰.基于台湾集集地震的结构滞回耗能影响分析[J].哈尔滨工业大学学报,2006,38(1):59-62.[4]ZHAI Chang-hai,XIE Li-li,WU Zhi-feng.Influence anal-ysis on hysteretic-energy based on 1999 Chi-Chi TaiwanEarthquake[J].Journal of Harbin Institute of Technolo-gy,2006,38(1):59-62.(in Chinese)
[5]胡冗冗,王亚勇.地震动瞬时输入能量谱探讨[J].工程抗震,2004,26(1):9-13.[5]HU Rong-rong,WANG Ya-yong.An exploratory investiga-tion on the momentary input energy spectra under seismicaction[J].Earthquake Resistant Engineering,2004,26(1):9-13.(in Chinese)
[6]PARK YJ,ANG AHS.Mechanistic seismic damage modelfor reinforced concrete[J].Journal of Structural Engineer-ing(ASCE),1985,111(4):722-739.
[7]程光煜,叶列平.弹塑性SDOF系统的地震输入能量谱[J].工程力学,2008,25(2):28-39.[7]CHENG Guang-yu,YE Lie-ping.Earthquake input energysprctrum for inelastic sdof systems[J].Engineering Me-chanics,2008,25(2):28-39.(in Chinese)
[8]盛明强,罗奇峰.Northridge与ChiChi地震滞回耗能谱的比较[J].同济大学学报(自然科学版),2008,36(10):1314-1319.[8]SHENG Ming-qiang,LUO Qi-feng.Comparison of hyster-etic energy spectra in Northridge and ChiChi Earthquake[J].Journal of Tongji University(Natural Science),2008,36(10):1314-1319.(in Chinese)
[9]肖明葵,刘纲,白绍良,等.抗震结构的滞回耗能谱[J].世界地震工程,2002,18(3):110-115.[9]XIAO Ming-kui,LIU Gang,BAI Shao-liang,et al.The hyster-etic energy spectra of seismic structures[J].World Informa-tion on Earthquake Engineering,2002,18(3):110-115.(inChinese)
[10]郭子雄,杨勇.恢复力模型研究现状及存在问题[J].世界地震工程,2004,20(4):47-51.[10]GUO Zi-xiong,YANG Yong.State-of-the-art of restoringforce models for RC structures[J].World Information onEarthquake Engineering,2004,20(4):47-51.(in Chi-nese)
[11]徐建.建筑结构设计常见及疑难问题解析[M].北京:中国建筑工业出版社,2007.
[12]肖明葵.基于性能的抗震结构位移及能量反应分析方法研究[D].重庆:重庆大学,2004.
[13]徐赵东,郭迎庆.MATLAB语言在建筑抗震工程中的应用[M].北京:科学出版社,2004.
[14]盛明强.基于滞回耗能的结构抗震性能评价方法研究[D].上海:同济大学,2008.
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