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| 1 | Deep water bottom current deposition in the northern South China Sea显示文摘There are some active bottom currents on the northern continental slope of the South China Sea (SCS). Reflection seismic profiles show that the bottom current channels occur in the water depth range of 1000 to 2700 m,extending from the NE to the SW,leading to accumulation of discontinuous drifts with higher sedimentation rates on the eastern side of the channel. The stacking pattern of the layers sug-gests that these drifts propagated southwestward,following the direction of the bottom currents. One sedimentary drift to the southeast of the Dongsha Islands has the highest sedimentation rate of 97cm/ka in the last 12 ka. The sedimentary characteristics of the sediment layers indicate that these bottom currents are most likley caused by the water movement of a branch of the West Pacific Ocean Current,which enters the northern SCS via the Bashi Strait. Once formed,the bottom currents trans-port sediments along the northern slope of SCS southwestward and finally disappear into the central basin of the SCS. Due to the bottom current activity,the deep-sea sedimentary process in the northern SCS is complex. | SHAO Lei LI XueJie GENG JianHua PANG Xiong LEI YongChang QIAO PeiJun WANG LiaoLiang WANG HongBin | 2007 | Science China Earth Sciences2007，50，7： | 43 |
| 2 | Seismic Sequence in Carbonate Rocks By Vibrational Liquefaction显示文摘On the basis of the records of strong seismic events taking place in soft carbonate sediments, a new seismic sequence system of vibrational liquefaction is established, which consists of a series of units, such as escaped structure of micrite veins and liquefied deformation formed in the period of seismic liquefaction, land subsidence structure after liquefaction, tsunamic hummocky and turbidite produced by seismic events, This sequence is a generalization and summation of field observation in vast areas, which shows the whole process of a strong seismic event and provides an unified theoretical explanation. The pattern of the seismic sequence by vibrational liquefaction provides one of correlation standards for geologists in the field to discriminate events in carbonate sequences. Based on the pattern of seismic sequence, the authors first advance a new conception of the Palaeo-Tanlu (Tancheng-Lujiang) Zone and discuss primarily its geological significations. | Qiao Xiufu, Song Tianrui, Gao Linzhi, Peng Yang, Li Haibing, Gao Mai, Song Biao and Zhang QiaodaInstitute of Geology, Chinese Academy of Geological Sciences, Beijing | 1994 | Acta Geologica Sinica(English Edition)1994，68，3： | 39 |
| 3 | Deep seismic reflection profile across the juncture zone between the Tarim Basin and the West Kunlun Mountains显示文摘Fine structures of the crust and upper mantle of the basin-and-range juncture on the northwestern margin of the Qinghai-Tibetan Plateau are first delineated by the deep seismic reflection profile across the juncture zone between the Tarim Basin and the West Kunlun Mountains. Evidence is found for the northward subduction of the northwest marginal lithosphere of the Qinghai-Tibetan Plateau and its collision with Tarim lithosphere beneath the West Kunlun Mountains. The lithosphere image of the face-to-face subduction and collision determines the coupling relationship between the Tarim Basin and the West Kunlun Mountains at the lithosphere scale and reflects the process of continent- continent collision. | GAO Rui HUANG Dongding LU Deyuan QIAN Guihua LI Yingkang KUANG Chaoyang Li Qiusheng LI Pengwu Feng Rujin Guan Ye | 2000 | Chinese Science Bulletin2000，45，24： | 30 |
| 4 | 井地联合地震勘探技术研究显示文摘垂直地震剖面(VSP)在求取地层参数(大地吸收衰减系数、速度、VTI和HTI介质参数)、时深转换与标定以及储层波场描述方面具有优势;地面地震则具有观测系统灵活均匀、成像孔径大、宏观地质解释能力强的优势。因此,井地联合地震勘探技术被视为未来地震勘探和油藏地球物理的重要发展方向之一。通过本次东部火成岩裂缝储层的VSP(零偏VSP,Walkaway VSP和160级三维VSP观测)与全方位地面地震观测的井地联合地震研究表明,基于VSP驱动的地面地震数据提高分辨率处理是有益的,但参数求取方法和近地表空间影响的消除需深入研究;基于VSP驱动的三维速度场的建立也存在一些问题需要研究;基于WVSP和三维VSP求取的VTI和HTI参数有效,并且对于驱动全方位地面地震数据的VTI处理、裂缝预测和叠前反演是有益的。最终通过基于VSP驱动的地面地震数据处理和消除近地表影响的相对保持储层振幅、频率、相位和波形的处理,以及处理过程中的质量监控,获得了火成岩裂缝储层的地质信息和火成岩相带精细解释结果。 | 郭向宇 凌云 高军 郭建民 孙祥娥 | 2010 | 石油物探2010，49，5： | 28 |
| 5 | The subducted slab of Yangtze Continental block beneath the Tethyan orogen in western Yunnan显示文摘The western Yunnan area is a natural laboratory with fully developed and best preserved Tethyan orogen in the world. Seismic tomography reveals a slab-like high velocity anomaly down to 250 km beneath the western Yunnan Tethyan orogen, to its west there is a low-velocity column about 300 km wide. in the region from Lancangjiang to Mojiang an obvious low velocity in the lower crust and uppermost mantle overlies on the slab. Synthesizing the available geological and geochemical results, the present paper demonstrates that this slab-like high velocity anomaly is a part of the subducted plate of Yangtze Continental segment after the closure of Paleotethys. The collision of India and Eurasia continent starting from 50-60 MaBP might trigger thermal disturbance in the upper mantle and cause the uprising of asthenosphere, in that case the subducted Yangtze plate could be broken off, causing Cenozoic magmatic activities and underplating in the Lancangjiang-Mojiang region. | Futian Liu Jianhua Liu Dalai Zhong Jiankun He Qingyu You | 2000 | Chinese Science Bulletin2000，45，5： | 28 |
| 6 | Velocity structure of the Qinling lithosphere and mushroom cloud model显示文摘Based on seismic tomography, explosive seismic sounding and seismic reflective profiling data, the lithosphere of the Qinling orogen can be divided into three parts. The upper lithosphere is the crust, having a thickness of 32-34km. The middle lithosphere is horizontal layering. 25-40 km thick. The lower lithosphere juxtaposed steeply declined high velocity and low velocity rock series, which might be split open under extension. Hot mantle flow upwelled to the level of the Moho then turned to horizontal direction and formed middle lithosphere. The shape of these kinds of lithosphere is somewhat like mushroom cloud in nuclear explosion. There is no causality between crustal structure of the Qinling orogen and its upper mantle structure nowadays. The Qinling orogen might be an intracontinental orogen of Indosinian-Yanshanian period, formed by wedging of the Yangtze crust into the middle crust of North China craton. and by reformation of extension in E-W direction in postorogenic period. | 袁学诚 | 1996 | Science China Earth Sciences1996，39，3： | 28 |
| 7 | Deep process of the collision and deformation on the northern margin of the Tibetan Plateau:Revelation from investigation of the deep seismic profiles显示文摘The seismic investigation achievements from three kinds of methods have revealed the lithospheric structure and the deep process of deformation caused by collision. It is found that convergent collision and deep subduction of the continental lithosphere are in progress along the northern margin of the Tibetan Plateau. The deep process of due collision and deformation is different from that of oblique collision. It is revealed in the study that the deep process of the collision and deformation on the northern margin is different from that on the southern margin of the Tibetan Plateau. | 高锐 李朋武 李秋生 管烨 史大年 孔祥儒 刘宏兵 | 2001 | Science China Earth Sciences2001，44，S1： | 26 |
| 8 | Numerical simulation of strong ground motion for the M_s8.0 Wenchuan earthquake of 12 May 2008显示文摘The Wenchuan earthquake of 12 May 2008 is the most destructive earthquake in China in the past 30 years in terms of property damage and human losses. In order to understand the earthquake process and the geo-morphological factors affecting the seismic hazard, we simulated the strong ground mo-tion caused by the earthquake, incorporating three-dimensional (3D) earth structure, finite-fault rupture, and realistic surface topography. The simulated ground motions reveal that the fault rupture and basin structure control the overall pattern of the peak ground shaking. Large peak ground velocity (PGV) is distributed in two narrow areas: one with the largest PGV values is above the hanging wall of the fault and attributed to the locations of fault asperities and rupture directivity; the other is along the north-western margin of the Sichuan Basin and caused by both the directivity of fault rupture and the ampli-fication in the thick sediment basin. Rough topography above the rupture fault causes wave scattering, resulting in significantly larger peak ground motion on the apex of topographic relief than in the valley. Topography and scattering also reduce the wave energy in the forward direction of fault rupture but increase the PGV in other parts of the basin. These results suggest the need for a localized hazard as-sessment in places of rough topography that takes the topographic effects into account. Finally, had the earthquake started at the northeast end of the fault zone and ruptured to the southwest, Chengdu would have suffered a much stronger shaking than it experienced on 12 May, 2008. | ZHANG Wei SHEN Yang CHEN XiaoFei | 2008 | Science China Earth Sciences2008，51，12： | 26 |
| 9 | Post-collisional lithosphere delamination of the Dabie-Sulu orogen显示文摘The consistence between the first rapid cooling time (226-219 Ma) of the untrahigh pressure metamorphic (UHPM) rocks in the Dabie Mountains and the formation time (205-220 Ma) of the syncollisional granites in the Qinling and Sulu areas suggests that the first rapid cooling and uplift of the UHPM rocks may be related to breakoff of subducted plate. Therefore the second rapid cooling and uplift (180-170 Ma) of the UHPM racks needs a post-colli-sional lithosphere delamination which resulted in the granitic magmatism with an age of about 170 Ma. In addition, the rapid rising of the Dabie dome in the early Cretaceous (130-110 Ma) and the corresponding large-scale magmatism in the Dabie Mountains need another litho-sphere delamination. The geochronology of the post-collis-ional mafic-ultramafic intrusions and geological relationship between the mafic-ultramafic intrusions and granites suggest that partial melting was initiated in the mantle, and then progressively developed in the crust, suggesting a mantle | Shuguang Li Fang Huang Hui Li | 2002 | Chinese Science Bulletin2002，47，3： | 22 |
| 10 | Three-dimensional thermal structure of the Chinese continental crust and upper mantle显示文摘We invert S-wave velocities for the 3D upper-mantle temperatures, in which the position with a temperature crossing the 1300℃ adiabat is corresponding to the top of the seismic low velocity zone. The temperatures down to the depth of 80 km are then calculated by solving steady-state thermal conduction equation with the constraints of the inverted upper-mantle temperatures and the surface temperatures, and then surface heat flows are calculated from the crustal temperatures. The misfit between the calculated and observed surface heat flow is smaller than 20% for most regions. The result shows that, at a depth of 25 km, the crustal temperature of eastern China (500―600℃) is higher than that of western China (<500℃). At a depth of 100 km, temperatures beneath eastern and southeastern China are higher than the adiabatic temperature of 1300℃, while that beneath west China is lower. The Tarim craton and the Sichuan basin show generally low temperature. At a depth of 150 km, temperatures beneath south China, eastern Yangtze craton, North China craton and around the Qiangtang terrane are higher than the adiabatic temperature of 1300℃, but is the lowest beneath the Sichuan basin and the regions near the Indian-Eurasian collision zone. At a depth of 200 km, very low temperature occurs beneath the Qinghai-Tibet Plateau and the south to the Tarim craton. | AN MeiJian1,2? & SHI YaoLin1 1 Laboratory of Computational Geodynamics, Graduate University of Chinese Academy of Sciences, Beijing 100049, China 2 Key Laboratory of Crust Deformation and Processes and Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China | 2007 | Science China Earth Sciences2007，50，10： | 20 |
| 11 | Assessing current faulting behaviors and seismic risk of the Anninghe-Zemuhe fault zone from seismicity parameters显示文摘Using the data of regional seismic network, this paper analyzes the current faulting behaviors of different segmentsof the Anninghe-Zemuhe fault zone, western Sichuan, and identifies the likely risky segments for potential largeearthquakes. The authors map the probable asperities from the abnormally low b-value distribution, develop andemploy a method for identifying current faulting behaviors of individual fault segment from the combinations ofmultiple seismicity parameter values, and make an effort to estimate the average recurrence intervals of character-istic earthquakes by using the parameters of magnitude-frequency relationship of the asperity segment. The resultsuggests that the studied fault zone contains 5 segments of different current faulting behaviors. Among them, theMianning-Xichang segment of the Anninghe fault has been locked under high stress, its central part is probably anasperity with a relatively large scale. The Xichang-Puge segment of the Zemuhe fault displays very low seismicityunder low stress. Both the locked segment and the low-seismicity segment can be outlined on the across-profile ofrelocated hypocenter depths. The Mianning-Xichang segment is identified to be the one with potential large earth-quake risk, for which the average recurrence interval between the latest M= 6.7 earthquake in 1952 and the nextcharacteristic event is estimated to be 55 to 67 years, and the magnitude of the potential earthquake between 7.0and 7.5. Also, it has been preliminarily suggested that for a certain fault segment, its faulting behaviors maychange and evolve with time gradually. | 易桂喜 闻学泽 范军 王思维 | 2004 | Acta Seismologica Sinica(English Edition)2004，17，3： | 19 |
| 12 | East-west crustal structure and “down-bowing” Moho under the northern Tibet revealed by wide-angle seismic profile显示文摘We recognized 6 sets of reflecting P- and S-wave events from Moho and other interfaces within the crust, respectively, with the wide-angle seismic data acquired from 510 km-long Selincuo-Ya'anduo profile in the northern Tibet, fitted the observed events with forward modeling, and interpreted crustal structure of P- and S-wave velocities and Poisson's ratio under the profile. The results demonstrate that the crustal structure between Yarlungzangbo and Bangong-Nujiang sutures changes abruptly, and the crust is the thickest at the middle part of the profile with thickness of 80 km or more. The 'down-bowing' Moho is the striking feature for the crustal variation along the west-east direction. The Moho uplifts with steps, and the uplifting rate westward is greater than that eastward. The heterogeneity of P- and S-wave velocities exists both vertically and horizontally, and one lower velocity layer (LVL) exists with the depth range of 27-34 km and the thickness range of 5-7 km. For the upper crust, Poisson's ratio is the lowest at the middle part of the profile; for the lower crust, the Poisson's ratio at the east segment is lower than that at west segment, which means that the crustal rigidity for the upper crust is different from the lower crust, and the lower crust under the east segment of the profile is more ductile. We infer that the substance in the lower crust endured eastward flow along with the collision between Eurasian and Indian plates, and the 'down-bowing' Moho is attributable to the multi-phase E-W tectonic processes. | 张中杰 李英康 王光杰 滕吉文 S.Klemperer 李敬卫 范进义 陈赟 | 2002 | Science China Earth Sciences2002，45，6： | 19 |
| 13 | P-wave tomographic images beneath southeastern Tibet:Investigating the mechanism of the 2008 Wenchuan earthquake显示文摘We used 71670 P-wave arrival times from 3594 earthquakes recorded by the Sichuan and Yunnan seismic networks to determine the three-dimensional P-wave velocity structure in the crust and uppermost mantle beneath the southeastern Tibetan Plateau. Our results show that prominent low P-wave velocity (low-Vp) anomalies exist in the midto lower crust of the Song- pan-Ganze and Sichuan-Yunnan blocks. In contrast, a high P-wave velocity (high-Vp) anomaly is resolved in the middle and lower crust beneath the Sichuan Basin. Our tomographic results provide seismic evidence for a dynamic model of lower crustal flow. Ongoing lower crustal flow beneath the central and eastern Tibetan Plateau abuts against the mechanically strong Si- chuan Basin resulting in accumulated strain in the Longmen Shan region. When a critical accumulation of strain energy was reached, its sudden release led to the occurrence of 2008 Wenchuan earthquake. Pronounced low-Vp anomalies are observed in the uppermost mantle in the region south of ~26°N. Combining these results with shear-wave splitting investigations, we suggest that the flow of asthenospheric material has impacted the velocity structure of the uppermost mantle and caused the thinning of the southwestern Yangtze Craton. | WEI Wei SUN RuoMei SHI YaoLin | 2010 | Science China Earth Sciences2010，53，9： | 18 |
| 14 | Crust and upper mantle structure of the Ailao Shan-Red River fault zone and adjacent regions显示文摘Using arrival data of the body waves recorded by seismic stations, we reconstructed the velocity structure of the crust and upper mantle beneath the southeastern edge of the Tibetan Plateau and the northwestern continental margin of the South China Sea through a travel time tomography technique. The result revealed the apparent tectonic variation along the Ailao Shan-Red River fault zone and its adjacent regions. High velocities are observed in the upper and middle crust beneath the Ailao Shan-Red River fault zone and they reflect the character of the fast uplifting and cooling of the metamorphic belt after the ductile shearing of the fault zone, while low velocities in the lower crust and near the Moho imply a relatively active crust-mantle boundary beneath the fault zone. On the west of the fault zone, the large-scale low velocities in the uppermost mantle beneath western Yunnan prove the influence of the mantle heat flow on volcano, hot spring and magma activities, however, the upper mantle on the east of the fault zone shows a relatively stable structure similar to the Yangtze block. The low velocities of the deep mantle beneath the southeastern extending segment of the fault zone are probably related to the mantle convection produced by the pull-apart of the South China Sea. | XU Yi LIU Jianhua LIU Futian SONG Haibin HAO Tianyao JIANG Weiwei | 2005 | Science China Earth Sciences2005，48，2： | 18 |
| 15 | Deep seismic reflection profiling revealing the complex crustal structure of the Tongling ore district显示文摘The deep seismic profiling across the Tongling ore district reveals a complex crustal structure. Strong contrasting dipping layered reflections (4—11 s, TWT),which dominate the lower crust of the northern part of the profile, are interpreted as the underplating of the basalt related to extensional tectonism. In the south of the profile, the Yangtze craton is characterized by strong reflections in the middle crust, showing a distinct two-layer crustal structure. Over the region of the Tongling uplift, there appear the complex arc shape reflections, suggesting folded, faulted and intruded structures, and the transparent zone below them reveals the existence of batholith. The south dipping strong reflections between the upper crust and lower crust (4—7 s, TWT) suggest a detachment between them. The detachment provided space for the magma intrusion, and caused the formation of the batholith. The Yangtze craton has a clear Moho re-flection, while the Tongling uplift has a weak Moho, whereas below the reflective lower crust in the northern part of the profile, there are sub-Moho reflections. The abrupt variation of the Moho characteristics within a short distance indicates the complexity of magmatic activity. | L5 Qingtian1, HOU Zengqian1, ZHAO Jinhua1, SHI Danian1, WU Xuanzhi1, CHANG Yinfo1, PEI Rongfu1,HUANG Dongding2 & KUANG Chaoyang2 1. Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China 2. The Sixth Geophysical Exploration Brigade, Petroleum Bureau of East China, Nanjing 210009, China | 2004 | Science China Earth Sciences2004，47，3： | 18 |
| 16 | Seismic fragility analysis of highway bridges considering multi-dimensional performance limit state显示文摘Fragility analysis for highway bridges has become increasingly important in the risk assessment of highway transportation networks exposed to seismic hazards. This study introduces a methodology to calculate fragility that considers multi-dimensional performance limit state parameters and makes a first attempt to develop fragility curves for a multi-span continuous (MSC) concrete girder bridge considering two performance limit state parameters: column ductility and transverse deformation in the abutments. The main purpose of this paper is to show that the performance limit states, which are compared with the seismic response parameters in the calculation of fragility, should be properly modeled as randomly interdependent variables instead of deterministic quantities. The sensitivity of fragility curves is also investigated when the dependency between the limit states is different. The results indicate that the proposed method can be used to describe the vulnerable behavior of bridges which are sensitive to multiple response parameters and that the fragility information generated by this method will be more reliable and likely to be implemented into transportation network loss estimation. | Wang, Qi'ang Wu, Ziyan Liu, Shukui | 2012 | Earthquake Engineering and Engineering Vibration2012，11，2： | 16 |
| 17 | Dynamic calculation model and seismic response for frame supporting structure with prestressed anchors显示文摘A dynamic calculation model of frame supporting structures with prestressed anchors for the slope stability is proposed. The frame and soil are closely contacted in the role of prestressed anchors and they cannot be separated along the whole slope. The lateral displacement of frame and soil is nearly in phase. The movement characteristic satisfies the theory of elastic foundation beam. The frame is treated with elastic foundation beam in this model. The influence of prestressed anchors is simplified as linear spring and damped system related with velocity. Under the condition of horizontal earthquake excitation, the equation of vibration response is established by using the model of dynamic Winkler beam and the analytical solutions are obtained for simple harmonic vibration. This method is applied to a case record for illustration of its capability, in order to verify the method, 3D nonlinear FEM (ADINA) is used to analyze the seismic performance of this case, the comparative results show that the design and the analysis are safe and credible by using the proposed method. The calculation model provides a new way for earthquake analysis and seismic design of slope stability supported by frame structure with prestressed anchors. | DONG JianHua1’2, ZHU YanPeng1, ZHOU Yong1 & MA Wei2 1 College of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China 2 State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China | 2010 | Science China(Technological Sciences)2010，53，7： | 16 |
| 18 | TSP预报隧道不良地质体应用研究显示文摘TSP(tunnel seismic prediction)数据采集质量是保证超前预报准确性的前提条件,为此在前人基础上进一步归纳总结了TSP数据采集应注意的问题,主要分析了炮孔、接收孔以及炮孔-接收孔关系等对TSP数据采集的影响.TSP对预报不良地质体具有良好的效果,本文分别列举了TSP对溶洞、松散破碎带以及软夹层等成功预报案例.通过对比TSP解译结果与隧道开挖实际地质情况发现,相同的岩石特性曲线,对应着不同的地质情况,有的地质情况可能存在重大安全隐患,而通过对该类曲线的分析总结为TSP结果解译提供参考和经验累积,有助于提高解译准确性. | 付代光 周黎明 肖国强 王法刚 | 2016 | 地球物理学进展2016，31，1： | 16 |
| 19 | Velocity structure and active fault of Yanyuan-Mabian seismic zone―The result of high-resolution seismic refraction experiment显示文摘The authors processed the seismic refraction Pg-wave travel time data with finite difference tomography method and revealed velocity structure of the upper crust on active block boundaries and deep features of the active faults in western Sichuan Province. The following are the results of our investigation. The upper crust of Yanyuan basin and the Houlong Mountains consists of the superficial low-velocity layer and the deep uniform high-velocity layer, and between the two layers, there is a distinct, and gently west-dipping structural plane. Between model coordinates 180-240 km, P-wave velocity distribution features steeply inclined strip-like structure with strongly non-uniform high and low velocities alternately. Xichang Mesozoic basin between 240 and 300 km consists of a thick low-velocity upper layer and a high-velocity lower layer, where lateral and vertical velocity variations are very strong and the interface between the two layers fluctuates a lot. The Daliang Mountains to the east of the 300 km coordinate is a non-uniform high-velocity zone, with a superficial velocity of approximately 5 km/s. From 130 to 150 km and from 280 to 310 km, there are extremely distinct deep anomalous high-velocity bodies, which are supposed to be related with Permian magmatic activity. The Yanyuan nappe structure is composed of the superficial low-velocity nappe, the gently west-dipping detachment surface and the deep high-velocity basement, with Jinhe-Qinghe fault zone as the nappe front. Mopanshan fault is a west-dipping low-velocity zone, which extends to the top surface of the basement. Anninghe fault and Zemuhe fault are east-dipping, tabular-like, and low-velocity zones, which extend deep into the base-ment. At a great depth, Daliangshan fault separates into two segments, which are represented by drastic variation of velocity structures in a narrow strip: the west segment dips westward and the east segment dips eastward, both stretching into the basement. The east margin fault of Xichang Mesozoic basin features a strong velocity gradient zone, dipping southwestward and stretching to the top surface of the basement. The west-dipping, tabular-like, and low-velocity zone at the easternmost segment of the profile is a branch of Mabian fault, but the reliability of the supposition still needs to be confirmed by further study. Anninghe, Zemuhe and Daliangshan faults are large active faults stretching deep into the basement, which dominate strong seismic activities of the area. | WANG FuYun1↑, DUAN YongHong1, YANG ZhuoXin1, ZHANG ChengKe1, ZHAO JinRen1, ZHANG JianShi1, ZHANG XianKang1, LIU QiYuan2, ZHU AiLan2, XU XiWei2 & LIU BaoFeng1 1 Geophysical Exploration Center, China Earthquake Administration, Zhengzhou 450002, China 2 Institute of Geology, China Earthquake Administration, Beijing 100029, China | 2008 | Science China Earth Sciences2008，51，9： | 16 |
| 20 | Performance-based seismic design of nonstructural building components:The next frontier of earthquake engineering显示文摘With the development and implementation of performance-based earthquake engineering,harmonization of performance levels between structural and nonstructural components becomes vital. Even if the structural components of a building achieve a continuous or immediate occupancy performance level after a seismic event,failure of architectural,mechanical or electrical components can lower the performance level of the entire building system. This reduction in performance caused by the vulnerability of nonstructural components has been observed during recent earthquakes worldwide. Moreover,nonstructural damage has limited the functionality of critical facilities,such as hospitals,following major seismic events. The investment in nonstructural components and building contents is far greater than that of structural components and framing. Therefore,it is not surprising that in many past earthquakes,losses from damage to nonstructural components have exceeded losses from structural damage. Furthermore,the failure of nonstructural components can become a safety hazard or can hamper the safe movement of occupants evacuating buildings,or of rescue workers entering buildings. In comparison to structural components and systems,there is relatively limited information on the seismic design of nonstructural components. Basic research work in this area has been sparse,and the available codes and guidelines are usually,for the most part,based on past experiences,engineering judgment and intuition,rather than on objective experimental and analytical results. Often,design engineers are forced to start almost from square one after each earthquake event: to observe what went wrong and to try to prevent repetitions. This is a consequence of the empirical nature of current seismic regulations and guidelines for nonstructural components. This review paper summarizes current knowledge on the seismic design and analysis of nonstructural building components,identifying major knowledge gaps that will need to be filled by future research. Furthermore,considering recent trends in earthquake engineering,the paper explores how performance-based seismic design might be conceived for nonstructural components,drawing on recent developments made in the field of seismic design and hinting at the specific considerations required for nonstructural components. | Andre Filiatrault Timothy Sullivan | 2014 | Earthquake Engineering and Engineering Vibration2014，13，S1： | 16 |
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