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地震工程与工程振动（英文版）
地震工程与工程振动（英文版）

齐霄斋

季刊

1671-3664

eeev@iem.net.cn

0451-86652649

150080

哈尔滨市南岗区学府路29号中国地震局工程力学研究所

地震工程与工程振动（英文版）/Journal Earthquake Engineering and Engineering VibrationCSCDEISCI
查看更多>>本刊是反映我国地震工程与工程振动领域最新成果和国外该领域最新进展的学术性期刊，旨在促进国际学术交流，推动地震工程与工程振动学科的发展，减轻地震灾害。本刊由中国地震局工程力学研究所主办、美国多学科地震工程研究所中心（MCEER）协办，半年刊。本刊主要刊登以下内容的综合评述、专题研究论文和科研简报：结构和工程体系震害评定，强震观测与分析，土木基础设施的地震危害性与危险性分析，场地对结构的影响和岩土工程，建筑物与生命线系统的抗震性能和设计原理，结构控制，现有基础设施系统的修复策略，结构动力学以及和地震工程相关的阻尼理论的进展，应急传感与监测系统和高性能材料在地震工程中的应用，以及风、波良和其它动荷载下土木工程结构振动问题。
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    Auto-parametric resonance of a continuous-beam-bridge model under two-point periodic excitation:an experimental investigation and stability analysis

    Li YuchunShen ChaoLiu WeiLi Dong...
    445-454页
    查看更多>>摘要：The auto-parametric resonance of a continuous-beam bridge model subjected to a two-point periodic excitation is experimentally and numerically investigated in this study.An auto-parametric resonance experiment of the test model is conducted to observe and measure the auto-parametric resonance of a continuous beam under a two-point excitation on columns.The parametric vibration equation is established for the test model using the finite-element method.The auto-parametric resonance stability of the structure is analyzed by using Newmark's method and the energy-growth exponent method.The effects of the phase difference of the two-point excitation on the stability boundaries of auto-parametric resonance are studied for the test model.Compared with the experiment,the numerical instability predictions of auto-parametric resonance are consistent with the test phenomena,and the numerical stability boundaries of auto-parametric resonance agree with the experimental ones.For a continuous beam bridge,when the ratio of multipoint excitation frequency(applied to the columns)to natural frequency of the continuous girder is approximately equal to 2,the continuous beam may undergo a strong auto-parametric resonance.Combined with the present experiment and analysis,a hypothesis of Volgograd Bridge's serpentine vibration is discussed.
      原文链接:
    • 万方数据
    • 维普

    Shaking table test study on performance and functionality of a typical telecommunication room after earthquakes

    Li BoGuo EndongSun GuoliangJi Shuqiang...
    455-474页
    查看更多>>摘要：Large numbers of basic transceiver stations,where the telecommunication room is one of the main components,comprise an important part of the telecommunication system.After earthquakes,considerable economic loss from telecommunication systems is often associated with seismic damage and functional loss of the telecommunication room.However,research related to this has been limited.In this study,shaking table tests were conducted for a full-scale typical telecommunication room,including a light-steel house and the necessary communication and power supply equipment.The tests not only focused on the seismic damage to all the structures but also considered the functions of the communication and power supply of the equipment.The interactions between these facilities and their effects on communication function were also investigated.Compared with the damage to structures,the interruption of the power supply due to earthquakes is a weak link.Finally,the damage indexes,together with their threshold values of different damage states for the communication and power supply equipment,were derived from the test results.The results of this research can contribute to the literature gaps regarding seismic performance studies of telecommunication rooms,and can serve as a valuable reference for future research on its seismic fragility and economic losses evaluation.
      原文链接:
    • 万方数据
    • 维普

    Identification of earthquake induced structural damage based on synchroextracting transform

    Roshan KumarGaurav KumarWei ZhaoArvind R Yadav...
    475-487页
    查看更多>>摘要：Several popular time-frequency techniques,including the Wigner-Ville distribution,smoothed pseudo-Wigner-Ville distribution,wavelet transform,synchrosqueezing transform,Hilbert-Huang transform,and Gabor-Wigner transform,are investigated to determine how well they can identify damage to structures.In this work,a synchroextracting transform(SET)based on the short-time Fourier transform is proposed for estimating post-earthquake structural damage.The performance of SET for artificially generated signals and actual earthquake signals is examined with existing methods.Amongst other tested techniques,SET improves frequency resolution to a great extent by lowering the influence of smearing along the time-frequency plane.Hence,interpretation and readability with the proposed method are improved,and small changes in the time-varying frequency characteristics of the damaged buildings are easily detected through the SET method.
      原文链接:
    • 万方数据
    • 维普

    Predictive active control of building structures using LQR and artificial intelligence

    Nirmal S.MehtaVishisht BhaiyaK.A.PatelEhsan Noroozinejad Farsangi...
    489-502页
    查看更多>>摘要：This study presents a neural network-based model for predicting linear quadratic regulator(LQR)weighting matrices for achieving a target response reduction.Based on the expected weighting matrices,the LQR algorithm is used to determine the various responses of the structure.The responses are determined by numerically analyzing the governing equation of motion using the state-space approach.For training a neural network,four input parameters are considered:the time history of the ground motion,the percentage reduction in lateral displacement,lateral velocity,and lateral acceleration,Output parameters are LQR weighting matrices.To study the effectiveness of an LQR-based neural network(LQRNN),the actual percentage reduction in the responses obtained from using LQRNN is compared with the target percentage reductions.Furthermore,to investigate the efficacy of an active control system using LQRNN,the controlled responses of a system are compared to the corresponding uncontrolled responses.The trained neural network effectively predicts weighting parameters that can provide a percentage reduction in displacement,velocity,and acceleration close to the target percentage reduction.Based on the simulation study,it can be concluded that significant response reductions are observed in the active-controlled system using LQRNN.Moreover,the LQRNN algorithm can replace conventional LQR control with the use of an active control system.
      原文链接:
    • 万方数据
    • 维普

    Seismic control of multi-degrees-of-freedom structures by vertical mass isolation method using MR dampers

    Mohamad Shahrokh AbdiMasoud NekooeiMohammad-Ali Jafari
    503-510页
    查看更多>>摘要：Vertical mass isolation(VMI)is one of the novel methods for the seismic control of structures.In this method,the entire structure is assumed to consist of two mass and stiffness subsystems,and an isolated layer is located among them.In this study,the magnetorheological damper in three modes:passive-off,passive-on,and semi-active mode with variable voltage between zero and 9 volts was used as an isolated layer between two subsystems.Multi-degrees-of-freedom structures with 5,10,and 15 floors in two dimensions were examined under 11 pairs of near field earthquakes.On each level,the displacement of MR dampers was taken into account.The responses of maximum displacement,maximum inter-story drift,and maximum base shear in controlled and uncontrolled buildings were compared to assess the suggested approach for seismic control of the structures.According to the results,the semi-active control method can reduce the response by more than 12%compared to the uncontrolled mode in terms of maximum displacement of the mass subsystem of the structures.This method can reduce more than 16%and 20%of the responses compared to the uncontrolled mode in terms of maximum inter-story drift and base shear of the structure,respectively.
      原文链接:
    • 万方数据
    • 维普

    Vibration attenuation performance of wind turbine tower using a prestressed tuned mass damper under seismic excitation

    Lei ZhenboLiu GangWang HuiHui Yi...
    511-524页
    查看更多>>摘要：With the rapid development of large megawatt wind turbines,the operation environment of wind turbine towers(WTTs)has become increasingly complex.In particular,seismic excitation can create a resonance response and cause excessive vibration of the WTT.To investigate the vibration attenuation performance of the WTT under seismic excitations,a novel passive vibration control device,called a prestressed tuned mass damper(PS-TMD),is presented in this study.First,a mathematical model is established based on structural dynamics under seismic excitation.Then,the mathematical analytical expression of the dynamic coefficient is deduced,and the parameter design method is obtained by system tuning optimization.Next,based on a theoretical analysis and parameter design,the numerical results showed that the PS-TMD was able to effectively mitigate the resonance under the harmonic basal acceleration.Finally,the time-history analysis method is used to verify the effectiveness of the traditional pendulum tuned mass damper(PTMD)and the novel PS-TMD device,and the results indicate that the vibration attenuation performance of the PS-TMD is better than the PTMD.In addition,the PS-TMD avoids the nonlinear effect due to the large oscillation angle,and has the potential to dissipate hysteretic energy under seismic excitation.
      原文链接:
    • 万方数据
    • 维普

    Instructions for authors

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    From the editors

    Qi XiaozhaiGeorge C.LeeBillie F.Spencer
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      原文链接:
    • 万方数据
    • 维普