带支撑粘弹性阻尼器耗能结构的随机地震响应分析
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黏滞阻尼器在框架结构抗震加固中的应用与研究摘要:近年来利用阻尼器对既有建筑结构进行减震加固得到了广泛关注。
本文建立了某实际4层框架结构的非线性模型,然后设置黏滞阻尼器(VFD),利用时程分析法对有、无控结构进行地震响应分析计算,得出该结构的耗能减震效果。
最后利用云图法,选取数条地震波对结构进行分析计算,对有、无控结构进行概率地震分析,通过对比概率需求模型、易损性曲线的差异分析黏滞阻尼器的耗能减震作用。
计算结果表明,通过对该结构设置若干VFD,结构的地震响应得到显著地减小,结构整体减震效果明显;有控结构的地震需求易损性曲线相较无控结构趋于平缓,表明VFD对该结构的耗能减震加固作用明显。
关键词:框架结构;黏滞阻尼器;非线性时程分析;云图法;结构概率地震需求分析耗能减震技术就是在结构的选定位置增设耗能装置,在小震作用下,耗能装置和结构一并处于弹性状态,可减小结构的地震响应,使结构主体处于安全范围,一旦出现大震,这些装置可以在结构破坏前率先达到屈服状态,来消耗大部分能量。
近年来利用耗能减震器对既有建筑结构进行减震加固得到了广泛关注。
1.消能减震的概念及耗能原理为了达到消震减能的目的,可以通过消能装置的安装来避免主体结构因地震能量而响应而造成的破坏,究其本质,消能减震技术是一种加固技术。
传统的抗震思路是进行“硬抗”,但却存在诸多的弊端问题。
而消能减震技术,则能够避免传统抗震加固的不足,通过“以柔克刚”的方式进一步达到抗震加固的效果。
从消能减震结构角度来看,其方式就是融入了减震控制思想,在原结构当中增加了消能减震装置,从而形成新的结构系统,图1对其进行了展现,通过图中资料的了解,无论是原结构还是消能减震装置,都是新结构系统的重要组成部分,并且在其中发挥了重要的作用。
相较于原结构而言,新结构系统在效能能力以及动力特征方面有自身的独特性,能够降低原结构承受的地震作用,这也是进行地震反应控制的一种有效方式,其目的是为了减少对主体结构造成的损害。
结构随机振动响应特性分析与控制方法研究随着城市化进程的加速和人们对建筑物安全性的要求不断提高,结构随机振动的研究和控制变得越来越重要。
本文将探讨结构随机振动的响应特性分析以及控制方法的研究。
第一部分:结构随机振动的响应特性分析结构随机振动是指由于外部激励或内部不均匀性引起的结构的随机振动。
为了深入了解结构随机振动的特性,需要进行响应分析。
响应分析是通过数学建模和计算方法,研究结构在随机激励下的振动响应。
在结构随机振动的响应特性分析中,常用的方法有频域分析和时域分析。
频域分析是通过将结构的振动响应信号转换为频谱,分析不同频率下的振动特性。
时域分析则是直接观察结构在时间上的振动响应,了解结构的动态行为。
此外,还有一种重要的方法是模态分析。
模态分析是通过计算结构的模态参数,如固有频率、阻尼比和模态形态等,来研究结构的振动特性。
模态分析可以帮助我们了解结构的主要振动模式和频率范围,为后续的振动控制提供依据。
第二部分:结构随机振动的控制方法研究结构随机振动的控制方法研究是为了减小结构的振动响应,提高结构的稳定性和安全性。
常用的结构振动控制方法包括被动控制、主动控制和半主动控制。
被动控制是指通过在结构上安装吸振器、阻尼器等被动装置,来吸收和分散结构的振动能量。
被动控制方法简单、成本较低,但需要根据结构的特性进行设计和安装。
主动控制是指通过在结构上安装传感器和执行器,实时监测和调整结构的振动响应。
主动控制方法可以根据实时的振动信号进行反馈控制,实现有效的振动抑制。
然而,主动控制方法的实施较为复杂,需要高度的技术支持和成本投入。
半主动控制是被动控制和主动控制的结合,通过在结构上安装可调节的装置,实现对结构振动的控制。
半主动控制方法综合了被动控制和主动控制的优点,具有较高的控制效果和较低的成本。
结构随机振动的控制方法研究还涉及到多学科的交叉,如结构动力学、控制理论、材料科学等。
通过不断的研究和探索,我们可以提高结构的抗震性能,保障人们的生命财产安全。
弹性-粘弹性复合结构随机响应的各阶谱矩的计算方法
冉志;张天舒;方同
【期刊名称】《振动工程学报》
【年(卷),期】2003(016)003
【摘要】提出了一种新的计算弹性-粘弹性复合结构随机响应的各阶谱矩的计算方法,它是一种时域复模态分析方法.利用此方法获得了弹性-粘弹性复合结构在白噪声、滤过白噪声等典型平稳随机激励下随机响应的各阶谱矩的解析表达式,分析了粘弹
性对各阶谱矩的影响.此计算方法简便、易用,无论单自由度或多自由度系统均适用,为进一步研究弹性-粘弹性复合结构在随机激励下的可靠性打下良好基础.
【总页数】5页(P363-367)
【作者】冉志;张天舒;方同
【作者单位】东华大学理学院,上海,200051;东华大学理学院,上海,200051;西北工
业大学工程力学系,西安,710072
【正文语种】中文
【中图分类】O324
【相关文献】
1.带粘弹性阻尼器的多高层建筑基于Davenport谱随机风振响应的精确解法 [J], 邹奕男;罗臻
2.弹性-粘弹性复合结构动力响应的增维精细积分法 [J], 高小科;邓子辰;黄永安
3.基于Clough-Penzien谱的粘弹性耗能结构地震响应的简明解析解法 [J], 邹万杰;姜琰;张梦丹;葛新广
4.基于Clough-Penzien谱的粘弹性耗能结构地震响应的简明解析解法 [J], 邹万杰;姜琰;张梦丹;葛新广
5.弹性-粘弹性复合结构系统的随机响应分析 [J], 张天舒;方同
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simulation of flow field characteristics of Helmholtz self-oscillating cavitation device……………………………………WANG Tianyu,LI Xing,ZHANG Kunming,HUANG Yongchun,YANG Feng,HUANG Chengdu(1)The effect of Bryophyllumpinnatum freeze-dried powder on human cancer cell lines proliferation………………………………………………………………………………WANG Xuechun,CAO Xumei,LU Ying,CHEN Li(12)Design of video vehicle detection system based on HOG feature and SVM………………………………………………………………………………………………………………TAN Guangxing,SUN Caiming,WANG Junhui(19)Design and detection of square wave signal generator based on STM32………………………………………………………………………………………………………HAI Tao,LU Daize,WEI Wen,WU Zonglin,HAI Lantian(24)Contour detection model based on X and Y cell receptive field visual nerve mechanism………………………………………………………………………………………………………WANG Yao,PAN Shenghui,LIN Chuan(31)Analysis of longitudinal-transverse coupled vibration of elevator hoisting system subjected to building sway……………………………………………………………………………WANG Wen,JIANG Yan,ZHANG Mengdan(41)Vehicle fatigue driving detection based on Viola-Jones face detection algorithm…………………………………………………………………………………………WU Xueying,WU Caishuo,HUANG Wencong,QIN Shulin(49)Preparation of Li7La3Zr2O12solid electrolyte by high temperature solid phase method and its performance………………………………………………………………………LI Suo,LIANG Xinghua,XU Jing,JIANG Xingtao(55)Research on automatic test system of vehicle bus based on Vector tool chain………………………………………………………………………………………………………………WANG Tao,YANG Nianjiong,SONG Lidong(60)Test analysis and solution of the mechanism of battery damage for a certain tractor……………………………………………………………………………WANG Ziwen,HUANG Guidong,GAO Qiaoming,HUANG Donghui(66)The influence of internal elements of single-pixel camera on the performance of reconstruction matrix……………………………………………………………………………………WU Xiaolong,CHENG Tao,YANG Ming(71)Virtual excitation method for solving random ground motion series responses of non-viscous damped structures in coil models……………………………………………………………LI Chuangdi,HE Wangtao,GE Xinguang(78)Semi-active control analysis of frame structure with linear magnetorheological controllable damping…………………………………………………………………………FU Xiong,ZHANG Min,CHEN Yuxue,SHAO Hailang(85)Study on improving soil permeability:a case of the infrastructure project of the Ecological Agriculture Demonstra⁃tion Park at the North Ecological New District in Liuzhou……………………………………………………………………………………………MA Ruiyi,ZHOU Yuanwu,LIN Zhinan,WANG Jiaquan,HU Feng,WU Binghui(92)Influence of roof groove type condenser structure on the roof structure under wind load…………………………………………………………………………………………………JIANG Huangqing,LI Zhengnong,ZOU Qiong(99)V 第4期Study on the performance of grinding fine admixture concrete with mechanism sand tailings……………………………………………………………HUANG Xinyu,ZHU Wanxu,YANG Man,LIANG Xinjian,ZHOU Hongmei(107)Study on safety management of prefabricated concrete structure based on BIM technology………………………………………………………………………………………WEI Xin,LIU Jingmin,QIN Kang,XIAO Chengyou(114)Application of improved firefly algorithm in portfolio problem decision making……TANG Tao,WANG Fuyu(121)NO.2Simple analytical method of earthquake response of viscoelastic energy dissipation structure based on Clough-Penzien spectrum………………………………ZOU Wanjie,JIANG Yan,ZHANG Mengdan,GE Xinguang(1)Study on frost resistance of self compacting lightweight aggregate concrete with sisal fiber and polypropylene fiber…………………………DONG Jianmiao,ZHUANG Jiaqiao,WANG Yadong,YU Lang,WANG Huimin(7)Impact analysis of pullout velocity on interface friction characteristics of geogrid-gravel soil………………………………………………………………………QI Hangxiang,WANG Jiaquan,LIN Zhinan,TANG Ying(13)The influence of methylcellulose ether on the properties of room temperature curing ultra high performance concrete……………………………………ZHOU Hongmei,PENG Yuxiang,CHEN Jing,HUANG Xinyu(20)Experimental research on elastic modulus of fly ash ceramsite lightweight aggregate concrete………………………………………………………………ZHU Ling,WU Huiqin,CEN Fanli,SHI Fangyu,CHEN Yuliang(26)Design and control method of vehicle bidirectional full bridge CLLC resonant converter based on SiC device ……………………………………………………………………………………WANG Tao,LUO Wenguang(33)Analysis of plantar pressure and ankle joint in mid-stance with flat feet………………………………………………WANG Guangzheng,SHI Guanglin,WU Shengxiang,GAO Cong,LIANG Xiaodi,SHANG Boshi(41)Design of hoist dump trailer with rear four-bar slide rail mechanism…………………………………………………………GAO Qiaoming,CAO Pengcheng,ZHANG Xing,DENG Feiyi,WANG Lianqi,HUANG Donghui,PAN Dong,ZENG Junhao(46)Study on fast gait of hexapod robot based on multi-body dynamics…………LIU Gang,WANG Junfeng(51)An anomaly detection algorithm for traffic trajectory data based on long short term memory model………………………………………………………………………………………………………QIN Shengjun,LI Ting(58)Parameter identification of equivalent mechanical model of liquid sloshing in tank truck……………………………………………………………LI Chao,WU Wenjun,ZHOU Fengxia,HUANG Zhonglie,GAO chaonan(65)An improved morphological edge detection algorithm………………………………………………………………………………………………………………………ZHANG Meng,ZHANG Xiaomei,HUANG Yinghui(72)An optimized voice signal processing method…………………WU Song,WU Xiaolong,WEI Shenghong(78)VI广西科技大学学报第32卷Research on energy management strategy of pure electric vehicle based on fuzzy control…………………………………………………………………………………………WANG Qi,LIU Shengyong,ZHENG Zhifei(83)Alcohol extraction analysis of flavonoids in Sophora japonica based on three-dimensional fluorescence spectroscopy……………………………………………YAO Hanxun,SU Hui,WEN Jian,YAO Zhixiang(89)Optimization of the technological conditions for the separation of total polyphenols from pyracanthophorafruit by macroporous resin……………………………………………………………………………………………………………DENG Youlin,RAN Siyan,SU Huiren,LI Fangfang,ZHANG Peng,HUANG Xiuxiang(94)Extraction technology of polyphenols from Pueraria lobata leaf and its antioxidant properties………………………………………TANG Tingfan,ZHU Jiaqing,LI Rongbin,FENG Jun,HUANG Fangli,LIANG Jieting,TIAN Yuhong,LI Xiaohui,CHENG Hao(100)Improved iteration method by correcting characteristic value with damping factor for ill-conditioned system of linear equations……………………………………………………………MO Chunpeng,QIN Boying(107)NO.3Numerical method for generalized integral of a class of periodic functions………………………………………………………………………………………………………GE Xinguang,LI Yuxiang,YANG Xuefeng(1)Information compensation of ray wave function based on wave superposition near field acoustic holography ………………………………………………………………………CHEN Yanhao,XIANG Yu,SHI Ziyu(6)Concise closed-form solution of vibration response spectral moment of vehicle system under road irregularity excitation…………………………………………………………LI Chuangdi,LI Yuxiang,GE Xinguang(13)Random seismic response characteristic of weak nonlinear energy dissipation structure with viscoelastic damper and supporting brace………………………………………………XIA Yu,LI Jinbo,YU Yingye(21)Effect of dispersion degree of GO on mechanical properties of cement-based materials…………………………………DONG Jianmiao,YU Lang,WANG Huimin,CAO Jiawei,WANG Liuyang,ZHUANG Jiaqiao(27)Simulation analysis of triaxial shear test of multi-sphericity Clump particles discrete element reinforced sand …………………………………………WANG Hengtong,WANG Jiaquan,TANG Yi,HUANG Wenqin(34)The gait tracking of lower limb exoskeleton based on RBF network adaptive control………………………………………………………………………………………………………LEI Lei,LI Jian,WU Qinghong(42)Application of3D visualization and3D printing in precise hepatectomy………………………SHANG Boshi, SHI Guanglin,XU Honglai,XIAO Min,GAO Cong,LIANG Xiaodi,WANG Guangzheng(48)Design and simulation of a kind of orchard mowing chassis………………………………………………………………ZENG Junhao,GAO Qiaoming,HUANG Guidong,ZHANG Xing,PAN Dong,JIANG Bingchao,HUANG Donghui,CAO Pengcheng(53)VII 第4期Research on decoding network with multi-scale features of deep learning model for contour detection………………………………………………………………………ZHANG Xiao,LIN Chuan,WANG Ruixing(60)Prediction and analysis of octane number using multi-layer perceptual neural network based on principal component dimension reduction……………SUN Jinfang,WANG Zhiwen,WANG Kangquan,WU Jing(67)Research on fuzzy PI control of buck converter…………………………………………………………………………………………………………………ZHOU Tongkuai,BIN Yang,LUO Wenguang,ZHANG Kun(74)Monitoring and analysis of support structure vibration caused by blasting construction of shallow buried super large section tunnel……………………HUANG Liuyun,LI Jun,WEI Sida,XU Tiancheng,LIU Zonghui(80)The structural performance analysis and lightweight design of a model axle housing…………………………………………………………………………ZHU Huayu,LUO Junhua,PAN Yongcai,LIANG Chenghua(86)Effect of roof demolition time on heat release rate of the vernacular pillar-supported dwelling………………………………………………………………KE Hongyang,YE Yanbing,ZHAI Yingying,ZHANG Yuping(92)Application of BIM technology in the construction of a subway station in Nanning………………………………………………………………………LI Hua,DENG Langni,LIAO Ling,LI Taisheng,LAI Lyuqiang(97)High efficiency imaging detection of cancer cells by fluorescent polydopamine-gold dots……………………………………………………………………………ZHOU Yu,TAN Hong,DENG Qianyi,ZUO Fang(102)Study on the preparation technology of cassava starch microspheres………………………………………………………………………………………………LI Hai,ZHANG Wenkang,RAN Litong,CHENG Hao(108)Iteration method by correcting characteristic value with damping factor based on LU decomposition for ill-conditioned system of linear equations…………………………………MO Chunpeng,QIN Boying(113)NO.4Aging detection of silicon rubber composite insulator based on terahertz technology…………………………………………ZHANG Xuemin,HUANG Jian,WANG Zihao,MIAO Chen,WU Zhensheng,CHENG Yibin(1)Intensified preparation of genipin-crosslinked chitosan nanospheres by orifice plate-based cavitation…………………………………XU Yun,ZHANG Kunming,HUANG Yongchun,LU Lijin,DUAN Chao,YU Huiqun(9)Preparation a nd microstructure of YSZ thermal barrier coatings prepared by PS-PVD……………………………XU Jing,MAO Jie,LIANG Xinghua,DENG Ziqian,DENG Chunming,DENG Changguang,LIU Min(17)Finite element analysis of a vehicle exhaust system based on OptiStruct………………………………………………………………………………………HUANG Dawei,TIAN Yongkang,XIE Hualin,GONG Yunxi(22)Asymmetric bipartite consensus of multi-agent system under event-triggered mechanism…………………………………………………………………………WANG Wenxin,YE Hongtao,LUO Wenguang,WEN Jiayan(28)Design and implementation of UA V ground station for bridge disease detection………………………………VIII第32卷广西科技大学学报……………………………………………………………………………………CHEN Kai,LUO Wenguang(35)The decoding network fusion method in deep learning of contour detection………………………………………………………………………………………………………………WEN Zeqi,LIN Chuan,QIAO Yakun(43)Research on key parameters selection of near field acoustic holography based on compressed sensing equivalent source method………………………………………WEI Shenghong,WU Song,ZHENG Xian(50)A concise closed-form solution for random response of single degree of freedom structure with generalized Maxwell damper based on Ou Jinping spectrum……………………………………………………………………………………………………………………………LIU Meihua,ZOU Wanjie,GE Xinguang,JIANG Yan(58)Research on 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