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| 1 | 应用动态复合震源模型模拟汶川M_w 7.9地震强地面运动显示文摘2008年5月12日中国汶川地区发生M_w7.9地震,震中位置103.4°E,31.0°N.主要发震断层空间展布长达300多公里,由南西方向到北东方向呈现明显的分段性,汶川—映秀段逆冲为主兼有少量的右旋走滑分量;安县—北川段为逆冲-右旋走滑的断层错动;青川段以右旋走滑为主兼有少量逆冲分量.采用改进后的复合震源强地面运动预测模型,建立了长为320km,宽为20km的断层破裂运动学模型,实现了断层分段、空间倾角、滑动方向连续变化的动态设定.数值模拟结果给出了近断层两侧(上、下盘)的地面加速度的分布特征,并同卧龙、郫县走石由及绵竹清平强震观测记录进行了对比分析.模拟加速度时程曲线无论在波形、持续时间、频率分量、峰值大小同观测记录都具有较好的相似性.利用现有83个已知经纬度台站的强震实测数据及数值模拟的结果同Boore等的新一代衰减关系(NGA)进行比较,对比模拟与实际观测水平峰值加速度的一致程度.近断层峰值加速度分布特征则进一步显示了在汶川、北川和青川附近明显的高值分布区域,同野外地质调查相一致.进一步的分析结果也表明,汶川—映秀段逆冲为主的断层上盘的运动量远大于断层下盘,在距离断层地表出露位置5km处,峰值加速度N-S、E-W及UP方向分量的比值分别为1.72:1、2.5:1及1.77:1.本文中给出的动态复合震源模型和近断层区域强震模拟的计算方法,对大震强地面运动的预测及实现近实时强地面运动分布特征的圈定(Shaking Map)有着重要的实际意义. | 孟令媛 史保平 | 2011 | 地球物理学报2011，54，4： | 14 |
| 2 | Structural modal parameter identifi cation and damage diagnosis based on Hilbert-Huang transform显示文摘Traditional modal parameter identifi cation methods have many disadvantages,especially when used for processing nonlinear and non-stationary signals.In addition,they are usually not able to accurately identify the damping ratio and damage.In this study,methods based on the Hilbert-Huang transform(HHT) are investigated for structural modal parameter identifi cation and damage diagnosis.First,mirror extension and prediction via a radial basis function(RBF) neural network are used to restrain the troublesome end-effect issue in empirical mode decomposition(EMD),which is a crucial part of HHT.Then,the approaches based on HHT combined with other techniques,such as the random decrement technique(RDT),natural excitation technique(NExT) and stochastic subspace identifi cation(SSI),are proposed to identify modal parameters of structures.Furthermore,a damage diagnosis method based on the HHT is also proposed.Time-varying instantaneous frequency and instantaneous energy are used to identify the damage evolution of the structure.The relative amplitude of the Hilbert marginal spectrum is used to identify the damage location of the structure.Finally,acceleration records at gauge points from shaking table testing of a 12-story reinforced concrete frame model are taken to validate the proposed approaches.The results show that the proposed approaches based on HHT for modal parameter identifi cation and damage diagnosis are reliable and practical. | Han Jianping Zheng Peijuan Wang Hongtao | 2014 | Earthquake Engineering and Engineering Vibration2014，13，1： | 11 |
| 3 | Experimental Study on Free Spanning Submarine Pipeline Under Dynamic Excitation显示文摘Seismic load has a significant effect on the response of a free spanning submarine pipeline when the pipeline is constructed in a seismically active region. The model experiment is performed on an underwater shaking table to simulate the response of submarine pipelines under dynamic input. In consideration of the effects of the terrestrial and submarine pipeline, water depth, support condition, distance from seabed, empty and full pipeline, and span on dynamic response, 120 groups of experiments are conducted. Affecting factors are analyzed and conclnsions are drawn for reference. For the control of dynamic response, the span of a submarine pipeline is by far more important than the other factors. Meanwhile, the rosponse difference between a submarine pipeline under sine excitation and that under random excitation exists in experiments. | 李昕 刘亚坤 周晶 马恒春 朱彤 | 2002 | China Ocean Engineering2002，17，4： | 9 |
| 4 | Dynamic response of a slope reinforced by double-row antisliding piles and pre-stressed anchor cables显示文摘Large-scale shaking table tests were conducted to study the dynamic response of a slope reinforced by double-row anti-sliding piles and prestressed anchor cables. The test results show that the reinforcement suppressed the acceleration amplification effectively. The axial force time histories are decomposed into a baseline part and a vibration part in this study. The baseline part of axial force well revealed the seismic slope stability, the peak vibration values of axial force of the anchor cables changed significantly in different area of the slope under seismic excitations. The peak lateral earth pressure acting on the back of the anti-sliding pile located at the slope toe was much larger than that acting on the back of the anti-sliding pile located at the slope waist. The test results indicate an obvious load sharing ratio difference between these two anti-slide piles, the load sharing ratio between the two anti-sliding piles located at the slope toe and the slope waist varied mainly in a range of 2-5. The anti-slide pile at the slope waist suppressed the horizontal displacement of the slope surface. | FAN Gang ZHANG Jian-jing QI Shun-chao WU Jin-biao | 2019 | Journal of Mountain Science2019，16，1： | 8 |
| 5 | Shaking table experimental study of recycled concrete frame-shear wall structures显示文摘In this study, four 1/5 scaled shaking table tests were conducted to investigate the seismic performance of recycled concrete frame-shear wall structures with different recycled aggregates replacement rates and concealed bracing detail. The four tested structures included one normal concrete model, one recycled coarse aggregate concrete model, and two recycled coarse and fi ne aggregate concrete models with or without concealed bracings inside the shear walls. The dynamic characteristics, dynamic response and failure mode of each model were compared and analyzed. Finite element models were also developed and nonlinear time-history response analysis was conducted. The test and analysis results show that the seismic performance of the recycled coarse aggregate concrete frame-shear wall structure is slightly worse than the normal concrete structure. The seismic resistance capacity of the recycled concrete frame-shear wall structure can be greatly improved by setting up concealed bracings inside the walls. With appropriate design, the recycled coarse aggregate concrete frame-shear wall structure and recycled concrete structure with concealed bracings inside the walls can be applied in buildings. | Zhang Jianwei Cao Wanlin Meng Shaobin Yu Cheng Dong Hongying | 2014 | Earthquake Engineering and Engineering Vibration2014，13，2： | 8 |
| 6 | Shaking table test and numerical simulation of an isolated cylindrical latticed shell under multiple-support excitations显示文摘In order to study the infl uence of the ground motion spatial eff ect on the seismic response of large span spatial structures with isolation bearings, a single-layer cylindrical latticed shell scale model with a similarity ratio of 1/10 was constructed. An earthquake simulation shaking table test on the response under multiple-support excitations was performed with the high-position seismic isolation method using high damping rubber (HDR) bearings. Small-amplitude sinusoidal waves and seismic wave records with various spectral characteristics were applied to the model. The dynamic characteristics of the model and the seismic isolation eff ect on it were analyzed at varying apparent wave velocities, namely infi nitely great, 1000 m/s, 500 m/s and 250 m/s. Besides, numerical simulations were carried out by Matlab software. According to the comparison results, the numerical results agreed well with the experimental data. Moreover, the results showed that the latticed shell roof exhibited a translational motion as a rigid body after the installation of the HDR bearings with a much lower natural frequency, higher damping ratio and only 1/2~1/8 of the acceleration response peak values. Meanwhile, the structural responses and the bearing deformations at the output end of the seismic waves were greatly increased under multiple-support excitations. | Xue Suduo Shan Mingyue Li Xiongyan Liang Shuanzhu Huang Fuyun Liu Yi | 2019 | Earthquake Engineering and Engineering Vibration2019，18，3： | 5 |
| 7 | Vertical shaking table tests on the structure with viscoelastic multi-dimensional earthquake isolation and mitigation devices显示文摘The viscoelastic multi-dimensional earthquake isolation and mitigation device is a new kind of passive control device, which can perform its 'name-giving' task of earthquake isolation and earthquake mitigation simultaneously. In order to quantify its vertical earthquake isolation and mitigation effect on structures, firstly, shaking table tests on steel frame structures with and without the devices were carried out; secondly, analysis on dynamic characteristics and dynamic responses of the structures was also performed; furthermore, the finite element analytical results and the experimental results were compared. It can be shown from the analytical and experimental results that the devices have noticeable earthquake isolation and mitigation effect in the vertical direction. | XU ZhaoDong SHI BenQiang WU KeYi ZENG Xiao | 2009 | Science China(Technological Sciences)2009，52，10： | 4 |
| 8 | Distributing disciplinarian of ground motion parameters on an earth fissure site during strong earthquakes显示文摘To investigate the distributing disciplinarian of ground motion parameters on the earth fissure site during strong earthquakes,a series of shaking table tests were designed and conducted based on 1:15 scaled models.Test results showed significant differences in the ground motion parameters(including ground motion intensity indices,spectrum characteristics and strong motion duration)between the hanging-wall and footwall caused by the earth fissure.Acceleration response,displacement response and Arias Intensity response on both sides of earth fissure indicated that the earth fissure site on the hanging-wall was destroyed more seriously.The distributing disciplinarian of amplification factors showed clear'hangingwall and footwall effects',which were more remarkable nearby the fissure zones.The low-frequency component of the seismic wave was richer after selectively filtering in the soil medium.By comparing the predominant period and mean period of the hanging-wall and footwall,it was found that vibration frequency on the hanging-wall was greater than that on the footwall.Minimum values of strong motion duration were recorded on the hanging-wall close to the fissure and increased from the fissure to both sides. | Xiong Zhongming Zhang Chao Huo Xiaopeng Chen Xuan J.Jorge Ochoa | 2020 | Earthquake Engineering and Engineering Vibration2020，19，3： | 4 |
| 9 | Investigation into dynamic response of regional sites to seismic waves using shaking table testing显示文摘This study addresses the changes in acceleration,pore water pressure and Fourier spectrums of different types of seismic waves with various amplitudes via large-scale shaking table tests from two sites:a sand-containing regional site and an all-clay site.Comparative analyses of the test results show that the pore water pressures in sand-soil layers of the regional site initially increase and then decrease as the amplitudes of the seismic accelerations increase.The actions of the vertical and vibrational seismic waves contribute to greater pore water pressures.The amplification coefficient of the sand-layer regional site becomes smaller as the seismic waves grow stronger,so that both sites are capable of filtering high frequencies and amplifying low frequencies of seismic waves.This is more apparent with the increase in the peak value of the acceleration,and the natural vibration frequencies of both sites decrease with the transmission of the seismic waves from the basement to the ground surface.The decreasing frequency value of the sand-containing regional site is smaller than that of the all-clay site. | Li Yadong Cui Jie Guan Tianding Jing Liping | 2015 | Earthquake Engineering and Engineering Vibration2015，14，3： | 3 |
| 10 | Horizontal shaking table tests and analysis on structures with multi-dimensional earthquake isolation and mitigation devices显示文摘The viscoelastic multi-dimensional earthquake isolation and mitigation device is a new kind of passive control device, which has both earthquake isolation and earthquake mitigation abilities. In order to quantify the horizontal earthquake isolation and mitigation effect of this device on structures, shaking table tests on structures with and without the devices and the corresponding analysis on earthquake isolation and mitigation properties are carried out. It can be shown from the experimental and analytical results that the device has both earthquake isolation and earthquake mitigation effects on structures in horizontal direction, and its horizontal earthquake mitigation coefficients can be referred to those of the rubber bearing earthquake isolation structure. | ZhaoDong Xu Xiao Zeng KeYi Wu AiQun Li QingYang Xu | 2009 | Science China(Technological Sciences)2009，52，7： | 3 |
| 11 | On the role of topographic ampli fi cation in seismic slope instabilities显示文摘Surface wave generation due to body wave propagation near ground surface has been discussed in the literature.This phenomenon,typically occurring in topographic changing areas,along with its interaction with body waves(SV),decreases precision of formulas for evaluation of slope displacement.This signi fi cant fact caused the researchers not only to investigate the combined surface and SV waves motion pattern,but also to consider its effect on structures built on the slopes.In order to reveal the phenomenon,several fi nite element numerical studies have been performed by ABAQUS programme.Besides,two physical model slopes simulating the landslide occurrence have been constructed and tested by shaking table device.The results of induced and calculated accelerations obtained by two approaches have been compared and Rayleigh wave generation has been proved.Furthermore,the slope displacements have been calculated by various empirical methods and the results were compared with numerical ones.The results proved that in order to increase the precision of empirical formulas for displacement prediction,surface wave effect should be taken into account.Finally,a concept of'effective depth of sur fi cial ampli fi cation'is introduced and its effect on dynamic slope stability is analysed. | Fardin Jafarzadeh Mohammad Mahdi Shahrabi Hadi Farahi Jahromi | 2015 | Journal of Rock Mechanics and Geotechnical Engineering2015，7，2： | 3 |
| 12 | Study of Shaking Table Test on Dynamic Response Characteristics and Failure Mechanism of the Loess Slope显示文摘The natural loess that covers the ground surface has good stability due to its low water content.However,when violent earthquakes occur,the strong dynamic stress generated in the slope may induce landslide disasters with different sizes.In this paper,a large-scale shaking table model test is used to reveal the dynamic response and instability failure process of the loess slope.The test results show that different parts of the slope have different vibration characteristics and the first natural frequency in the model increases with the increase of the slope height.The response acceleration of different parts may change due to the coupling relationship between the spectral characteristics of input wave and the natural frequencies of different parts of slope,suggesting the characteristics of regional differential dynamic response.Under the condition of different dynamic response,stress state and boundary conditions of different parts of slope,a rapid microstructural damage,cumulative residual deformation evolution,and tension-shear coupling instability failure process may appear at the top of the slope with the strong dynamic response associated with the increase of dynamic loading intensity.The Sd values presented in this paper may reflect soil damage and slope instability and failure. | PU Xiaowu WANG Lanmin WANG Ping CHAI Shaofeng XU Shiyang | 2020 | Earthquake Research in China2020，34，1： | 3 |
| 13 | Seismic responses of the steel-strip reinforced soil retaining wall with full-height rigid facing from shaking table test显示文摘To investigate the seismic response of the steel-strip reinforced soil retaining wall with fullheight rigid facing in terms of the acceleration in the backfill, dynamic earth pressure in the backfill, the displacements on the facing and the dynamic reinforcement strain distribution under different peak acceleration, a large 1-g shaking table test was performed on a reduced-scale reinforced-earth retaining wall model. It was observed that the acceleration response in non-strip region is greater than that in potential fracture region which is similar with the stability region under small earthquake,while the acceleration response in potential fracture region is greater than that in stability region in middle-upper of the wall under moderately strong earthquakes. The potential failure model of the rigid wall is rotating around the wall toe. It also was discovered that the Fourier spectra produced by the inputting white noises after seismic wave presents double peaks, rather than original single peak, and the frequency of the second peak trends to increase with increasing the PGA(peak ground amplitude) of the excitation which is greater than 0.4 g. Additionally,the non-liner distribution of strip strain along the strips was observed, and the distribution trend was not constant in different row. Soil pressure peak value in stability region is larger than that in potential fracture region. The wall was effective under 0.1 g-0.3 g seismic wave according to the analyses of the facing displacement and relative density. Also, it was discovered that the potential failure surface is corresponds to that in design code, but the area is larger. The results from the study can provide guidance for a more rational design of reinforced earth retaining walls with full-height rigid facing in the earthquake zone. | CAO Li-cong FU Xiao WANG Zhi-jia ZHOU Yong-yi LIU Fei-cheng ZHANG Jian-jing | 2018 | Journal of Mountain Science2018，15，5： | 3 |
| 14 | Shaking Table Test Study on Dynamic Characteristics of Bridge Foundation Reinforcement on Slopes显示文摘With the fast development of bridge construction in mountainous and seismic areas,it is necessary to conduct related research. Based on the design of a shaking table model test,here are the following test results: the filtering effect exists in soil and is affected by the dynamic constraint conditions,the amplitude is strengthened around the natural frequency and weakened in other frequency bands in the Fourier spectrum. Since the acceleration scaling effect occurred on a sloped surface,the acceleration response decreases from the outside to the inside in soil. The dynamic response is relatively strong near the slip surface in bedrock due to the reflection of seismic waves. The failure mode of landslide is decided by the slope angle and slipping mass distribution, and the test shows the front row stabilizing piles should keep a proper distance from bridge foundation so that seismic resistance can be guaranteed for the bridge foundation. | Lei Da Qi Zhihui Jiang Guanlu Wang Zhimeng Li Anhong | 2017 | Earthquake Research in China2017，31，3： | 3 |
| 15 | Experimental research on the multilayer compartmental particle damper and its application methods on long-period bridge structures显示文摘Particle damping technology has attracted extensive research and engineering application interest in the field of vibration control due to its prominent advantages, including wide working frequency bands, ease of installation, longer durability and insensitivity to extreme temperatures. To introduce particle damping technology to long-period structure seismic control, a novel multilayer compartmental particle damper (MCPD) was proposed, and a 1/20 scale test model of a typical long-period self-anchored suspension bridge with a single tower was designed and fabricated. The model was subjected to a series of shaking table tests with and without the MCPD. The results showed that the seismic responses of the flexible or semi-flexible bridge towers of long-period bridges influence the seismic responses of the main beam. The MCPD can be conveniently installed on the main beam and bridge tower and can effectively reduce the longitudinal peak displacement and the root mean square acceleration of the main beam and tower. In addition, no particle accumulation was observed during the tests. A well-designed MCPD can achieve significant damping for long-period structures under seismic excitations of different intensities. These results indicate that the application of MCPDs for seismic control of single-tower self-anchored suspension bridges and other long-period structures is viable. | Zhenyuan LUO Weiming YAN Weibing XU Qinfei ZHENG Baoshun WANG | 2019 | Frontiers of Structural and Civil Engineering2019，13，4： | 3 |
| 16 | Influence factors on the seismic behavior and deformation modes of gravity retaining walls显示文摘This study investigated the influence factors on the seismic response and deformation modes of retaining walls using large-scale model shaking table tests. Experimental results showed that the distribution of peak seismic earth pressures along the height of a wall was a single peak value curve. The seismic earth pressures on a gravel soil retaining wall were larger than the pressures on the weathered granite and quartz retaining walls. Also, the peak seismic earth pressure increased with increases in the peak ground acceleration and the wall height. The measured seismic active earth pressures on a rock foundation retaining wall were larger than the calculated values, and the action position of resultant seismic pressure was higher than 0.33 H. In the soil foundation retaining wall, the measured seismic earth pressures were much smaller than the calculated values, while the action position was slightly higher than 0.33 H. The soil foundation retaining wall suffered base sliding and overturning under earthquake conditions, while overturning was the main failure mode for the rock foundation retaining walls. | ZHU Hong-wei YAO Ling-kan LI Jing | 2019 | Journal of Mountain Science2019，16，1： | 2 |
| 17 | Evaluation of Dynamic Soil-Structure Interaction and Dynamic Seismic Soil Pressures Acting on It Subjected to Strong Earthquake Motions显示文摘In order to clarify the damage mechanism of the subway structure, the dynamic soil-structure interaction and the dynamic forces acting on the structure, a series of shaking table tests and simulation analyses were performed. The seismic response of the structure and the dynamic forces acting on the structure due to sinusoidal and random waves were investigated with special attention to the dynamic soil-structure interaction. The result shows that the compression seismic soil pressures and extension seismic soil pressures simultaneously act on the sidewalls, and big shear stress also acts on the ceiling slab due to horizontal excitation. The seismic soil pressure could be approximated to hyperbola curve, and reached a peak value with increase of the shear strain of the model ground. In addition, a slide and exfoliation phenomenon between the structure and the surrounding ground was simulated, using the nonlinear analyses. The foundation is provided for amending the calculation method of seismic soil pressure and improving the anti-earthquake designing level of underground structure. | 车爱兰 IWATATE Takahiro 葛修润 | 2006 | Journal of Shanghai Jiaotong university(Science)2006，11，4： | 1 |
| 18 | Seismic earth pressures on flexible cantilever retaining walls with deformable inclusions显示文摘In this study,the results of 1-g shaking table tests performed on small-scale flexible cantilever wall models retaining composite backfill made of a deformable geofoam inclusion and granular cohesionless material were presented.Two different polystyrene materials were utilized as deformable inclusions.Lateral dynamic earth pressures and wall displacements at different elevations of the retaining wall model were monitored during the tests.The earth pressures and displacements of the retaining walls with deformable inclusions were compared with those of the models without geofoam inclusions.Comparisons indicated that geofoam panels of low stiffness installed against the retaining wall model affect displacement and dynamic lateral pressure profile along the wall height.Depending on the inclusion characteristics and the wall flexibility,up to 50% reduction in dynamic earth pressures was observed.The efficiency of load and displacement reduction decreased as the flexibility ratio of the wall model increased.On the other hand,dynamic load reduction efficiency of the deformable inclusion increased as the amplitude and frequency ratio of the seismic excitation increased.Relative flexibility of the deformable layer(the thickness and the elastic stiffness of the polystyrene material) played an important role in the amount of load reduction.Dynamic earth pressure coefficients were compared with those calculated with an analytical approach.Pressure coefficients calculated with this method were found to be in good agreement with the results of the tests performed on the wall model having low flexibility ratio.It was observed that deformable inclusions reduce residual wall stresses observed at the end of seismic excitation thus contributing to the post-earthquake stability of the retaining wall.The graphs presented within this paper regarding the dynamic earth pressure coefficients versus the wall flexibility and inclusion characteristics may serve for the seismic design of full-scale retaining walls with deformable polystyrene inclusions. | Ozgur L.Ertugrul Aurelian C.Trandafir | 2014 | Journal of Rock Mechanics and Geotechnical Engineering2014，6，5： | 1 |
| 19 | Theoretical and experimental research on a new system of semi-active structural control with variable stiffness and damping显示文摘In this paper, a new system of semi active structural control with active variable stiffness and damping (AVSD) issuggested. This new system amplifies the structural displacement to dissipate more energy, and in turn, effectively reduces thestructural response in the case of relatively small story drifts, which occur during earthquakes. A predictive instantaneousoptimal control algorithm is established for a SDOF structure equipped with an AVSD system Comparative shaking table testsof a 1/4 scale single story structural model with a full scale control device have been conducted. From the experimental andanalytical results, it is shown that when compared to structures without control or with the active variable stiffness control alone,the suggested system exhibits higher efficiency in controlling the structural response, requires less energy input, operates withhigher reliability, and can be manufactured at a lower cost and used in a wider range of engineering applications. | 周福霖 谭平 阎维明 魏陆顺 | 2002 | Earthquake Engineering and Engineering Vibration2002，1，1： | 1 |
| 20 | Preliminary Study on Broadband Resonance of Shaking Table Based on the Compressibility of Gas显示文摘In order to improve the performance of the shaking table,a vibration-enhanced shaking table which exploited broadband resonance was constructed.The broadband resonance was realized by an adjustable stiffness mechanism which exploited gas compressibility.Different from the traditional device,a gas filled cylinder(GFC)was mounted between the shake table and the exciter,and a pressure regulator was designed to regulate the gas pressure of the GFC.The natural frequency of the designed shaking table can be adjusted based on the compressibility of gas during the test.The principle of stiffness adjustment was theoretically analyzed and a series of experiments were carried out to investigate the effects of regulating the natural frequency.The experimental results indicate that the amplitude can be twice amplified and the natural frequency can be regulated between 2 0 Hz and 6 0 Hz. | Xinghua Zhou Xiao Sun Kehong Tang Lili Cheng Dingxuan Zhao | 2019 | Journal of Beijing Institute of Technology2019，28，2： | 1 |
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