|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Study on seismic response control of a single-tower self-anchored suspension bridge with elastic-plastic steel damper显示文摘Elastic-plastic steel damper(EPSD) is a new device controlling seismic responses.The mechanical principle of EPSD was presented and a comparison was conducted between the theoretical formulas and finite element(FE) simulation of damper units.The verified force-displacement hysteretic curve of the damper system was obtained with reference to tests.The Nanjing Jiangxinzhou Bridge(NJB) was subsequently taken as the case to investigate the seismic response control effect of EPSDs on single-tower self-anchored suspension bridges.A 3-dimensional FE model of the bridge was established in ANSYS and the dynamic and static analyses of the bridge were conducted,the control effect of EPSDs under different seismic waves was further investigated through nonlinear time-history analysis based on the validated model.Results showed that both the simplified theoretical and FE simulation methods can preferable reflect the mechanical performance of EPSD,and that seismic responses of NJB with EPSDs are better than those with elastic connection device or fluid viscous damper.However,the control effect of EPSDs is influenced by seismic wave characteristics. | WANG Hao ZHOU Rui ZONG ZhouHong WANG Chen LI AiQun | 2012 | Science China(Technological Sciences)2012,55,6: | 12 |
| 2 | Finite element model validation of bridge based on structural health monitoring——Part I: Response surface-based finite element model updating显示文摘In the engineering practice, merging statistical analysis into structural evaluation and assessment is a tendency in the future. As a combination of mathematical and statistical techniques, response surface(RS) methodology has been successfully applied to design optimization, response prediction and model validation. With the aid of RS methodology,these two serial papers present a finite element(FE) model updating and validation method for bridge structures based on structural health monitoring. The key issues to implement such a model updating are discussed in this paper, such as design of experiment,parameter screening, construction of high-order polynomial response surface model,optimization methods and precision inspection of RS model. The proposed procedure is illustrated by a prestressed concrete continuous rigid-frame bridge monitored under operational conditions. The results from the updated FE model have been compared with those obtained from online health monitoring system. The real application to a full-size bridge has demonstrated that the FE model updating process is efficient and convenient.The updated FE model can relatively reflect the actual condition of Xiabaishi Bridge in the design space of parameters and can be further applied to FE model validation and damage identification. | Zhouhong Zong Xiaosong Lin Jie Niu | 2015 | Journal of Traffic and Transportation Engineering(English Edition)2015,2,4: | 9 |
| 3 | Effects of total soy saponins on free radicals in the quadriceps femoris,serum testosterone,LDH,and BUN of exhausted rats显示文摘Purpose:The aim of this study was to investigate the impact of total soy saponins(TS) on the free radical metabolism from the quadriceps femoris muscle,serum testosterone,lactate dehydrogenase(LDH),and blood urea nitrogen(BUN) in rats exercised to exhaustion.Methods:A one-time exhausted treadmill exercise session was used.Sprague-Dawley rats were divided into 4 groups:a control group—animals receiving no TS and no exercise(NTSNE),animals receiving TS but no exercise group(TSNE),animals receiving no TS but exercised to exhaustion group(NTSE),and animals receiving TS and exercised to exhaustion group(TSE).The TSNE and TSE groups were fed TS at a dosage of 20 mg/kg body weight once per day for 2 weeks.The NTSE group was given a placebo,and the NTSNE group was not given any treatment.The NTSE and TSE groups were exercised at speed of 30 m/min on treadmill until exhausted.The exercise time and exercise distance were recorded when the rats became exhausted and the rats were then decapitated and anatomized immediately.A 10% homogenate of the quadriceps femoris tissue was prepared.The levels of superoxide dismutase(SOD),catalase(CAT),malondialdehyde(MDA),glutathione peroxidase(GSH-Px),glutathione reductase(GR),reduced glutathione(GSH),total antioxidant capacity(T-AOC),LDH,BUN,and serum testosterone were tested.Results:TS significantly increased the exercise time to exhaustion by 20.62%(p < 0.05).The MDA levels were decreased significantly in the TSNE group than in NTSNE group(p < 0.05);the T-AOC levels increased significantly in the TSNE group than in the other 3 groups(p < 0.01,p < 0.05,p < 0.05).The LDH activity significantly increased in the NTSE group than in TSNE group(p < 0.05).The BUN levels significantly increased in the NTSE group than in the other 3 groups(p < 0.01,p < 0.01,p < 0.05),and significantly increased in the TSE group than in NTSNE and TSNE groups(both p < 0.01).The serum testosterone levels increased significantly in the TSNE group than in the other 3 groups(all p < 0.01).SOD,CAT,GSH-Px,GR,and GSH were not statistically different among the groups.Conclusion:TS can significantly improve the exercised rats' serum testosterone level and antioxidant activity in their quadriceps femoris to varying degrees,decrease MDA and serum LDH and BUN levels,increase the exercise time,and delay the occurrence of the fatigue. | Zhigang Liu Ruixin Nie Yun Liu Zhouhong Li Chenxi Yang Zhengying Xiong | 2017 | Journal of Sport and Health Science2017,6,3: | 8 |
| 4 | Plasma level and genetic variation of apolipoprotein E in patients with lipoprotein glomerulopathy显示文摘Background Lipoprotein glomerulopathy (LPG) is a renal disease characterized by thrombus-like lipoproteins in the glomerular capillaries and its abnormal lipoprotein profiles with marked elevation of apolipoprotein E (apoE). In this study, 15 Chinese patients with LPG were involed in exploring the association of the genetic variation and its plasma level in the pathogenesis of LPG.Methods A retrospective analysis of the clinical and pathological features was made in 15 patients with LPG. Plasma concentrations of apoE were measured with radial immunodiffusion assay. Genetic variations of apoE gene were detected using polymerase chain reaction and restriction fragment length polymorphism. Glomerular deposition of apoA, apoB and apoE in these patients were detected by immunofluorescence staining using monoclonal antibodies. Results Biochemical profiles of lipids and lipoproteins revealed markedly elevated levels of triglyceride, apoB and apoE, but approximately normal levels of total cholesterol, apoA1 and lipoprotein(a) [Lp(a)], which resembled familial hypertriglyceridemia. Genetic analysis demonstrated that the genotype distribution of apoE were 7 cases with (ε3/ε 4,)4 cases with ε3/ε 3 and 2 cases with ε2/ε 3. The other 2 cases (a mother and her son) showed a same distinct band. The band pattern of later 2 cases was quite similar to the apoE variant of Tokyo type. The calculated allele frequency of ε 4 was relatively high in cases with LPG in comparison with that in the normal controls. We further divided the 13 patients into three groups according to their genotypes of apoE. Patients with the genotype of apoE ε2/ε3 showed a lower level of plasma apoE as compared to those with apoE ε3/ε4 (P<0.05). The serum level of high-density lipoprotein (HDL) was the lowest in patients with the genotype of apoE ε3/ε4. No difference was found among the patients with different apoE genotype in the other clinical and pathological characteristics. Conclusions The genotype of apoE ε3/ε4 is the predominant one in Chinese patients with LPG. Patients with this genotype tend to have a higher plasma level of apoE and more severe lipid dysmetabolism. No correlation was found between the genotype of apoE and the clinical features in patients with LPG. | ZHANGBo LIUZhi-hong ZENGCai-hong ZHENGJing-min CHENHui-ping ZHOUHong LILei-shi | 2005 | Chinese Medical Journal2005,,7: | 8 |
| 5 | Finite element model validation of bridge based on structural health monitoring——Part Ⅱ:Uncertainty propagation and model validation显示文摘Because of uncertainties involved in modeling, construction, and measurement systems,the assessment of the FE model validation must be conducted based on stochastic measurements to provide designers with confidence for further applications. In this study,based on the updated model using response surface methodology, a practical model validation methodology via uncertainty propagation is presented. Several criteria of testing/analysis correlation are introduced, and the sources of model and testing uncertainties are also discussed. After that, Monte Carlo stochastic finite element(FE) method is employed to perform the uncertainty quantification and propagation. The proposed methodology is illustrated with the examination of the validity of a large-span prestressed concrete continuous rigid frame bridge monitored under operational conditions. It can be concluded that the calculated frequencies and vibration modes of the updated FE model of Xiabaishi Bridge are consistent with the measured ones. The relative errors of each frequency are all less than 3.7%. Meanwhile, the overlap ratio indexes of each frequency are all more than75%; The MAC values of each calculated vibration frequency are all more than 90%. The model of Xiabaishi Bridge is valid in the whole operation space including experimental design space, and its confidence level is upper than 95%. The validated FE model of Xiabaishi Bridge can reflect the current condition of Xiabaishi Bridge, and also can be used as basis of bridge health monitoring, damage identification and safety assessment. | Xiaosong Lin Zhouhong Zong Jie Niu | 2015 | Journal of Traffic and Transportation Engineering(English Edition)2015,2,4: | 2 |
| 6 | 显示文摘 | ZHOUHong(周宏) YUShan-Shan(于姗姗) DUANHai-Bao(段海宝) etal | 2013 | 无机化学学报2013,,: | 2 |
| 7 | Effect of pyrolysis temperature on the yield and properties of bio-oils obtained from the auger pyrolysis of Douglas Fir wood显示文摘 | Shi-Shen Liaw Zhouhong Wang Pius Ndegwa Craig Frear Su Ha Chun-Zhu Li Manuel Garcia-Perez | 2011 | Journal of Analytical and Applied Pyrolysis2011,,: | 1 |
| 8 | Experimental modal parameter identification of civil engineering structures显示文摘 | REN Weixin ZONG Zhouhong | | 0,,04: | 1 |
| 9 | Experimental Modal Parameter Identification of Civil Engineering Structures 显示文摘 | Ren Weixin Zong Zhouhong | 2004 | International Journal of Structure Engineering and Mechnanics2004,17,34: | 1 |
| 10 | 显示文摘 | ZHOUHong HUANGLing-yun LUOMan-li(周虹 黄凌云 罗曼丽) | | 电子科学学刊0,,: | 1 |
| 11 | Dynamic analysis of a half-through concrete-filled steel tubular arch bridge显示文摘 | Zong Zhouhong Bjiaya Jashi Ge Jiping | 2005 | Engineering Structures2005,27,1: | 1 |
| 12 | State of the art report of bridge health monitoring显示文摘 | Zong Zhouhong Wang T L Huang D Z | 2002 | Journal of Fuzhou University(Natural Science)2002,30,2: | 1 |
| 13 | Dynamic and seismic performance of old multi-tiered temples in Nepal显示文摘 | Jaishi Bijaya Ren Weixin Zhouhong | 2003 | Engineering Structures2003,25,14: | 1 |
| 14 | Mallee wood fast pyrolysis:Effects of alkali and alkaline earth metallic species on the yield and composition of bio- oil显示文摘 | Daniel Mourant Zhouhong Wang Min He | | 0,,09: | 1 |
| 15 | A review on close-in blast performance of RC bridge columns显示文摘In recent decades,the increase in terrorist attacks highlights the necessity and importance of understanding of structural performance under accidental and intentionally malicious blast loads.As an important part of transportation infrastructure,bridges would inevitably suffer explosion hazards especially close-in explosion.Reinforced concrete(RC)bridge column is the most critical components of bridge structures,which is more prone to severe local damage under the action of close-in blast loading and can lead to progressive collapse with catastrophic consequences in most cases.Therefore,the blast performance of RC bridge columns under close-in explosions is of particular concern.Towards a better RC bridge column protection against close-in blast loadings,efforts have been mainly devoted to understanding dynamic response predictions of RC columns,numerical simulation techniques of close-in explosion and damage assessment of blast-damaged RC columns.This article presents a state-of-the-art review of the research status of RC columns subjected to close-in blast loads.The blast loading,experimental study and failure mode,uncoupled and coupled simulation method,damage assessment based on residual axial capacity,vulnerability analysis and machine learning are considered and reviewed.The merits and defects of the existing approaches are discussed,and some suggestions for possible improvement are proposed.Further investigation into the future development of this topic has also been identified. | Sujing Yuan Yazhu Li Zhouhong Zong Minghong Li Yajun Xia | 2023 | Journal of Traffic and Transportation Engineering(English Edition)2023,10,4: | 1 |
| 16 | Dynamic and seismic performance of old multi-tiered temples in Nepal 显示文摘 | Bijaya Jaishi Ren Weixin Zong Zhouhong Prem Nath Maskey | 2003 | Engineering Structures2003,25,14: | 1 |
| 17 | Preparation of porous/hollow particles of phenolic resin显示文摘 | ZhouHong HuangGuangsu GaoPin LongChengqun | 2007 | Polym Adv Technol2007,,7: | 1 |
| 18 | Hepatic stellate cells activated by acidic tumor microenvironment promote the metastasis of hepatocellular carcinoma via osteopontin显示文摘 | Jin Song Zhouhong Ge Xinrong Yang Qin Luo Cun Wang Haiyan You Tianxiang Ge Yun Deng Hechun Lin Yongqi Cui Wei Chu Ming Yao Zhigang Zhang Jianren Gu Jia Fan Wenxin Qin | 2014 | Cancer Letters2014,,: | 1 |
| 19 | 显示文摘 | HANZhi-Jian(韩志坚) ZhOUHong(周洪) ChENHan-Wen(陈汉文) etal | | WujiHuaxueXuebao0,,: | 1 |
| 20 | Fundamental discussions on seismic Vibrators显示文摘 | Thomas F P Wei Zhouhong | | Geophysics0,75,6: | 1 |