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| 1 | Research on failure scenarios of domes based on form vulnerability显示文摘In this paper, form vulnerability theory was applied to the analysis of the failure mechanisms of single-layer latticed spherical shells subjected to seismic excitations. Three 1/10 scale testing models were designed with characteristics as follows: Model 1 possesses overall uniform stiffness and is expected to collapse in the strength failure mode as some members become plastic; Model 2 possesses six man-made weak parts located on six radial main rib zones and is expected to collapse in the dynamic instability mode with all members still in the elastic stage; Model 3 strengthens the six weak zones of Model 2, and therefore, its stiffness is uniform. Model 3 is proposed to collapse in the strength failure mode when the members are still in the elastic stage. By increasing the peak ground accelerations of seismic waves gradually, the shaking table tests were carried out until all three models collapsed (or locally collapsed). On the basis of form vulnerability theory, topological hierarchy models of the test models were established through a clustering process, and various failure scenarios, including overall collapse scenarios and partial collapse scenarios, were identified by unzipping corresponding hierarchical models. By comparison of the failure scenarios based on theoretical analysis and experiments, it was found that vulnerability theory could effectively reflect the weakness zones in topological relations of the structures from the perspective of internal causes. The internal mechanisms of the distinct failure characteristics of reticulated shells subjected to seismic excitations were also revealed in this process. The well-formedness of structural clusters, Q, is closely related to the collapse modes, i.e., uniform changes of Q indicate a uniform distribution of overall structural stiffness, which indicates that strength failure is likely to happen; conversely, non-uniform changes of Q indicate that weak zones exist in the structure, and dynamic instability is likely to occur. | YE JiHong LIU WenZheng PAN Rui | 2011 | Science China(Technological Sciences)2011，54，11： | 15 |
| 2 | Implications of stalagmite density for past climate change:An example from stalagmite growth during the last deglaciation from Wanxiang Cave,western Loess Plateau显示文摘The density of a stalagmite(WX42A)from Wanxiang Cave,Wudu County,Gansu Province,China,in the western margin of the Asian summer monsoon region,presents regular fluctuations in different deposition periods during the last deglaciation.Over long timescales,high-precision 230Th dating and high-resolution stalagmite density data indicate that the density-time series between 17644 a BP and 12758 a BP is quite similar to the stalagmite δ18O record which reflects Asian monsoon intensity.Strengthening/weakening(lighter/heavier stalagmite δ18O values)of the Asian monsoon is accompanied by increase/decrease in stalagmite density.Over short timescales,decrease in stalagmite density correlates to monsoon-retreat events such as the Inter-AllerФd Cold Period(IACP),Older Dryas(OD)and Inter-BФlling Cold Period(IBCP).Generally,this kind of decrease in stalagmite density reflects precipitation decrease with weakening of the Asian monsoon,which in turn slows cave dripwater rate and decreases crystal nuclei,leading to enlargement of calcite crystals,weakened biological activity and decreased soil pCO2 which increases the abundance of impure detrital materials in stalagmites.However,during the period of large amplitude reduction of precipitation and biological activity which resulted from extreme monsoon-retreat events,temperature variation would dominate fluctuation of stalagmite density.For example,stalagmite density increased suddenly when temperature dropped suddenly in the north Atlantic during Heinrich event 1(H-1).This may be caused by low seepage water temperature,more dissolved calcium carbonate,compact regular crystals forming under higher supersaturation,leading to the stalagmite increased density.Stalagmite density fluctuation sensitively recorded stalagmite growth history and environment,demonstrating that stalagmite density can be used as a proxy for paleoclimatic research. | ZHANG DeZhong ZHANG PingZhong SANG WenCui CHENG Hai WU XiuPing YUAN Ye BAI YiJun WANG JiangLin JIA JiHong | 2010 | Chinese Science Bulletin2010，55，34： | 7 |
| 3 | Strength failure of spatial reticulated structures under multi-support excitation显示文摘Under strong earthquakes, long-span spatial latticed structures may collapse due to dynamic instability or strength failure. The elasto-plastic dynamic behaviors of three spatial latticed structures, including two double-layer cylindrical shells and one spherical shell constructed for the 2008 Olympic Games in Beijing, were quantitatively examined under multi-support excitation (MSE) and uniform support excitation (USE). In the numerical analyses, several important parameters were investigated such as the peak acceleration and displacement responses at key joints, the number and distribution of plastic members, and the deformation of the shell at the moment of collapse. Analysis results reveal the features and the failure mechanism of the spatial latticed structures under MSE and USE. In both scenarios, the double-layer reticulated shell collapses in the 'overflow' mode, and the collapse is governed by the number of invalid plastic members rather than the total number of plastic members, beginning with damage to some of the local regions near the supports. By comparing the numbers and distributions of the plastic members under MSE to those under USE, it was observed that the plastic members spread more sufficiently and the internal forces are more uniform under MSE, especially in cases of lower apparent velocities in soils. Due to the effects of pseudo-static displacement, the stresses in the members near the supports under MSE are higher than those under USE. | Ye Jihong Zhang Zhiqiang Chu Ye | 2011 | Earthquake Engineering and Engineering Vibration2011，10，1： | 5 |
| 4 | The interaction between membrane structure and wind based on the discontinuous boundary element显示文摘Small disturbance potential theory is widely used in solving aerodynamic problems with low Mach numbers, and it plays an important role in engineering design. Concerning structure wind engineering, the body of the structure is in a low velocity wind field, with a low viscosity of air and thin boundary layer, therefore, the tiny shear stress caused by the boundary layer can be ignored, only wind pressure being considered. In this paper, based on small disturbance potential theory, the fluid-structure interaction between the wind and membrane structure is analyzed by joint utilization of the boundary element method (BEM) and finite element method (FEM) through a loose-coupling procedure. However, the boundary of flow field to be calculated is not fully smooth, corners and edges still exist, so the discontinuous boundary element is introduced. Furthermore, because a large scale boundary element equation set with a nonsymmetrical coefficient matrix must be solved, this paper imports a preconditioning GMRES (the generalized minimum residual) iterative algorithm, which takes full advantage of the boundary element method. Several calculation examples have verified the correctness and soundness of the treatments mentioned above. | LI Ya &YE JiHong Key Laboratory of R.C. & P.C. Structures of Ministry of Education, Southeast University, Nanjing 210096, China | 2010 | Science China(Technological Sciences)2010，53，2： | 5 |
| 5 | Vibration test and analysis of Laoshan bicycle gymnasium for the Olympic Games under multi-support excitations显示文摘The vibration tests of Laoshan bicycle gymnasium for the Olympic Games are performed under multi-support excitations in order to verify the effectiveness of multi-support time history method. The excitation sources come from the impact forces acting on the ring beam of the reticulated structure, on the basis of which the records of motions of each excited point and corresponding structural vibration responses are all collected. The theoretical analytical model of the structure is further established and the structural dynamic responses are obtained subjected to the same excitation case via multi-support time history method. The calculation results are generally in agreement with those of the test in both time domain and frequency domain, which verify the effectiveness of multi-support time history method. The vibration test can also provide references for long-span structures under multi-support excitations. | YE JiHong ZHOU ShuLu BAO Wei WEI Zheng LI ZhiJun | 2008 | Science China(Technological Sciences)2008，51，9： | 5 |
| 6 | Vertical coherency function model of spatial ground motion显示文摘Many studies have focused on horizontal ground motion, resulting in many coherency functions for horizontal ground motion while neglecting related problems arising from vertical ground motion. However, seismic events have demonstrated that the vertical components of ground motion sometimes govern the ultimate failure of structures. In this paper, a vertical coherency function model of spatial ground motion is proposed based on the Hao model and SMART 1 array records, and the validity of the model is demonstrated. The vertical coherency function model of spatial ground motion is also compared with the horizontal coherency function model, indicating that neither model exhibits isotropic characteristics. The value of the vertical coherency function has little correlation with that of the horizontal coherency function. However, the coherence of the vertical ground motion between a pair of stations decreases with their projection distance and the frequency of the ground motion. When the projection distance in the wave direction is greater than 800 meters, the coherency between the two points can be neglected. | Ye Jihong Pan Jinlong Liu Xianming | 2011 | Earthquake Engineering and Engineering Vibration2011，10，3： | 5 |
| 7 | Numerical and experimental research on annular crossed cable-truss structure under cable rupture显示文摘The Annular Crossed Cable-Truss Structure(ACCTS) is a new type of Tensile Spatial Structure with a configuration suitable to cover large-span stadiums. Its configuration has potential to perform well in resisting disproportionate collapse. However, its disproportionate collapse resistance hasn't yet been analyzed in depth. In this study, numerical and experimental research was carried out to investigate the performance of ACCTS under cable rupture. The numerical analysis was done for ten cable-rupture plans using LS-DYNA(explicit method) and the experimental test on an ACCTS with a diameter of 17.15 m was performed for three cable-rupture plans. It is concluded that, while deflections increase with the number of removed cables, an ACCTS does not undergo a disproportionate collapse and it provides a promising structural concept for tensile spatial structures. | Liu Renjie Li Xiongyan Xue Suduo Marijke Mollaert Ye Jihong | 2017 | Earthquake Engineering and Engineering Vibration2017，16，3： | 5 |
| 8 | Strength behavior and collapse of spatial-reticulated structures under multi-support excitation显示文摘Under strong shocks,long-span spatial-latticed structures may collapse due to dynamic instability or strength failure.The elasto-plastic dynamic behaviors of three spatiallatticed structures,including two double-layer cylindrical shells and a spheri-cal shell used for the 2008 Olympic Games in Beijing,were quantitatively examined under multi-support excitation(MSE) and uniform support excitation(USE).Numerical analyses described several important parameters such as the peak acceleration and displacement responses at key joints,the number and distribution of plastic elements,and the deformation of the shell at the moment of collapse.Results of the analysis revealed the features and the failure mechanism of the spatial-latticed structures under MSE and USE.In both scenarios,the double-layer reticulated shell collapsed in the 'overflow' mode,collapse was govrned by the number of invalid plastic elements rather than the total number of plastic elements,and the collapse of the structure began with damage to certain local regions near the supports.By comparing the numbers and distributions of the plastic members under MSE to those under USE,it was observed that the plastic members spread more sufficiently and the internal forces were more uniform under MSE,especially for lower apparent velocities in soils.Due to the effects of pseudo-static displacement,the stresses in members near supports under MSE were higher than those under USE.These regions are prone to failure during earthquakes and deserve special attention in the seismic design of reticulated structures. | YE JiHong ZHANG ZhiQiang CHU Ye | 2011 | Science China(Technological Sciences)2011，54，6： | 4 |
| 9 | Help from space:grant-free massive access for satellite-based IoT in the 6G era显示文摘The Sixth-Generation(6G)standard for wireless communications is expected to realize ubiquitous coverage for massive Internet of Things(IoT)networks by 2030.Satellite-based communications are recognized as a highly promising technical enabler to satisfy IoT service requirements in the 6G era.This study analyzes multiple access technologies,which are essential for the effective deployment of satellite-based IoT.First,we thoroughly investigate the existing research related to massive access,including information-theory considerations as well as Non-Orthogonal Multiple Access(NOMA)and Random Access(RA)technologies.Then,we explore the influence of the satellite transmission environment on multiple access technologies.Based on this study,a Non-orthogonal Massive Grant-Free Access(NoMaGFA)scheme,which reaps the joint benefits of RA and NOMA,is proposed for asynchronous transmissions in satellite-based IoT to achieve improved system throughput and enhance the system robustness under varying traffics.Finally,we identify some important and interesting future developments for satellite-based IoT,including waveform design,transceiver design,resource allocation,and artificial intelligence-enhanced design. | Neng Ye Jihong Yu Aihua Wang Rongrong Zhang | 2022 | Digital Communications and Networks2022，8，2： | 3 |
| 10 | Epidemiology of Animal Rabies—China,2010–2020显示文摘Introduction:Rabies is a fatal zoonotic infectious disease that poses a serious threat to public health in China.Since 2005,a National Animal Rabies Surveillance System has been operating to understand the rabies situation in animals in China with a view to control and eventually eliminate dog-mediated human rabies.Methods:From 2010,the brain tissues of dogs,livestock,and wild animals showing rabies-like clinical signs were collected and tested by the National Reference Laboratory(NRL)for Animal Rabies to analyze the epidemiological characteristics of rabies,including animal species,geographic distribution,and transmission sources.Over the same period,clinically suspected animal rabies cases were collected by Animal Disease Control Centers through the National Animal Disease Monitoring Information Platform(NADMIP)and then reported in the Veterinary Bulletin.Results:During 2010–2020,170 of 212 suspected animal rabies cases were submitted to and confirmed by NRL as rabies virus-positive.Of these confirmed cases dogs,especially free-roaming and ownerless dogs in rural areas,were major transmission hosts(71/170).A total of 51 infected dogs attacked humans with 45 biting more than one person.The dog cases were reported all year round,but with significantly more in spring and summer.The majority of livestock rabies cases(70/80)being caused by rabid wild foxes in Xinjiang and Inner Mongolia revealed that foxes play a pivotal role in animal rabies epizootics in the north and northwest of the country.Conclusion:Dogs were the main transmission sources of rabies in China,and along with the recent increase of rabies in foxes and other wildlife,presented an increasing threat to livestock and public health. | Ye Feng Jihong Ma Sheng Sun Lijuan Chi Zhanying Kou Changchun Tu | 2021 | China CDC weekly2021，3，39： | 3 |
| 11 | Numerical simulation of non-Gaussian wind load显示文摘Compared with Gaussian wind loads,there is a higher probability of strong suction fluctuations occurrence for non-Gaussian wind pressures.These instantaneous and intermittent fluctuations are the initial cause of local damage to roof structures,particularly at the edges and corners of long-span roofs.Thus,comparative errors would occur if a Gaussian model is used to describe a non-Gaussian wind load,and structural security would not be guaranteed.This paper presents a simplified method based on the inverse fast Fourier transform(IFFT),in which the amplitude spectrum is established via a target power spectrum.Also,the phase spectrum is constructed by introducing the exponential peak generation(EPG) model.Finally,a random process can be generated via IFFT that meets the specified power spectral density(PSD),skewness and kurtosis.In contrast to a wind tunnel experiment,this method can avoid the coupled relation between the non-Gaussian and the power spectrum characteristics,and lead to the desired computational efficiency.Its fitting accuracy is not affected by phase spectrum.Moreover,the fitting precision of the kurtosis and PSD parameters can be guaranteed.In a few cases,the fitting precision of the skewness parameter is fairly poor,but kurtosis is more important than skewness in the description of the non-Gaussian characteristics.Above all,this algorithm is simple and stable and would be an effective method to simulate a non-Gaussian signal. | YE JiHong DING JingHu LIU ChuanYan | 2012 | Science China(Technological Sciences)2012，55，11： | 3 |
| 12 | Clinical assessment and genomic landscape of a consanguineous family with three Kallmann syndrome descendants显示文摘尽管引起 Kallmann 症候群(KS ) 的一些基因被传统的连接分析和候选人基因技术识别了,症候群是在遗体糟糕理解的病人的多数的分子的病原学。在这份报纸,我们在场对与三个 KS 后代一起的一个同宗的汉中国家庭的临床的评价。从一个染色体宽的观点理解 KS 的分子的病原学,我们用 Affymetrix 染色体宽的人的 SNP 数组在这个家庭调查了结构的变化的染色体宽的侧面 6.0 站台。结果表明三个影响个人在染色体 1p21.1, 2q32.2, 8q21.13, 14q21.2 和 Xp22.31 上有普通拷贝数字变体(microdeletions ) 。而且, Xp22.31 上的拷贝数字变体位于 KAL1 的 intron,它引起 X 连接 KS。二 PCR 试金在这些区域上被执行验证用薄片获得的结果。另外,在这个区域的 genomic microdeletions 在 29 个汉中国分散的 KS 案例之一和四个另外的家庭案例之一中,然而并非用 26 汉汉语被验证分散的 normosmic 自发的 hypogonadotropic 性腺机能减退案例和 100 无关的汉汉语正常控制。我们的结果提供新奇卓见进对 KS 的分子的病原学的某些拷贝数字变体的相对贡献并且为进一步的研究产生有趣的候选人区域的一张表。 | Shilin Zhang Yanping Tang Tao Wang Jun Yang Ke Rao Lingyun Zhao Wenzhen Zhu Xianghu Meng Shaogang Wang Jihong Liu Weimin Yang Zhangqun Ye | 2011 | Asian Journal of Andrology2011，13，1： | 3 |
| 13 | A simplified multisupport response spectrum method显示文摘A simplified multisupport response spectrum method is presented.The structural response is a sum of two components of a structure with a first natural period less than 2 s.The first component is the pseudostatic response caused by the inconsistent motions of the structural supports,and the second is the structural dynamic response to ground motion accelerations.This method is formally consistent with the classical response spectrum method,and the effects of multisupport excitation are considered for any modal response spectrum or modal superposition.If the seismic inputs at each support are the same,the support displacements caused by the pseudostatic response become rigid body displacements.The response spectrum in the case of multisupport excitations then reduces to that for uniform excitations.In other words,this multisupport response spectrum method is a modification and extension of the existing response spectrum method under uniform excitation.Moreover,most of the coherency coefficients in this formulation are simplified by approximating the ground motion excitation as white noise.The results indicate that this simplification can reduce the calculation time while maintaining accuracy.Furthermore,the internal forces obtained by the multisupport response spectrum method are compared with those produced by the traditional response spectrum method in two case studies of existing long-span structures.Because the effects of inconsistent support displacements are not considered in the traditional response spectrum method,the values of internal forces near the supports are underestimated.These regions are important potential failure points and deserve special attention in the seismic design of reticulated structures. | Ye, Jihong Zhang, Zhiqiang Liu, Xianming | 2012 | Earthquake Engineering and Engineering Vibration2012，11，2： | 1 |
| 14 | Simulation of construction shape-forming process of cable domes显示文摘A cable dome has no stiffness or load carrying capacity unless it has been prestressed.Analyses of cable domes are based on successful prestressing designs,making force finding analysis very important.A new force finding method named the imbal-ance force iterative method is proposed,which can overcome some limitations of the integrity feasible prestressing method.For instance,even if groups are assigned by mistake,the pretension distribution that satisfies the known geometry form can also be found.This method possess good stability and calculation efficiency,and a case study indicates that it is applicable to the force finding of large and complicated cable domes.On the other hand,form finding analysis of cable domes is also a key engineering problem.However,rigid displacement occurs in this process,which makes the analysis more complex.In this pa-per,the dynamic relaxation method was selected,and the problem of rigid displacement was therefore effectively solved.The method includes two steps:first,the stretching cables are released,and secondly,an axial force is imposed on the two ends of each released cable.This method is convenient in its calculation and clear in its conception.A case study indicates that the method is suitable for the simulation of the construction process of various cable domes and cable-strut tension structures.Moreover,a form finding experiment was conducted on a model of a cable dome with a diameter of 4.8 m by tensing diagonal cables.The behavior of the model in the form finding process was investigated.The experimental results indicate that the ini-tial lengths of members and prestress loss are key issues in cable domes design.The results also prove that the methods of form finding and force finding proposed in this paper are reliable and effective. | YE JiHong FENG RuoQiang KAN Yuan | 2012 | Science China(Technological Sciences)2012，55，1： | 1 |
| 15 | Elevated temperature material deg- radation of cold-formed steels under steady and transient state conditions 显示文摘 | YE Jihong CHEN Wei | 2013 | Journal of Materials in Civil Engineer- ing ASCE2013，25，8： | 1 |
| 16 | Elastic lateral and restrained distortional buckling of doubly symmetric I-beams 显示文摘 | Chen Wei Ye Jihong | 2010 | International Journal of Structural Stability and Dynamics2010，10，5： | 1 |
| 17 | Mechanical properties of G550 cold-formed steel under transient and steady state condi- tions显示文摘 | CHEN Wei YE Jihong | 2012 | Journal of Constructional Steel Research2012，73，： | 1 |
| 18 | Improved fire re- sistant performance of load bearing cold-formed steel interi- or and exterior wall systems 显示文摘 | CHEN Wei YE Jihong BAI Yu | 2013 | Thin-Walled Structures2013，73，12： | 1 |
| 19 | Full-scale fire ex- periments on load-bearing cold-formed steel wails lined with different panels 显示文摘 | CHEN Wei YE Jihong BAI Yu | 2012 | Journal of Constructional Steel Research2012，79，12： | 1 |
| 20 | Evaluation of the Buckling Load of an Elliptic Paraboloid Cable-Braced Grid Shell Using the Continuum Analogy显示文摘 | Feng Ruo-qiang Ye Jihong Yao Bin | 2012 | Journal of Engineering Mechanics2012，，12： | 1 |
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