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| 1 | Evaluation model for service life of dam based on time-varying risk probability显示文摘For many dam projects in China, the 50-year designed life time is coming to an end. It is urgent to study the theory and method to evaluate the dam service life. In this paper, firstly, the probability theory of fuzzy event and time-varying effect theory are used to analyze the time-variety of various risk factors in the process of dam operations. A method is proposed to quantify the above time-variety and a model to describe the fuzzy time-varying risk probability for the dam structure is also built. Secondly, the information entropy theory is used to analyze the uncertain degree relationship between the characteristic value of membership function and fuzzy risk probability, and a mathematical method is presented to calculate the time-varying risk probability accordingly. Thirdly, the relation mode between time-varying risk probability and service life is discussed. Based on this relation mode and the acceptable risk probability of dams in China, a method is put forward to evaluate and forecast the dam service life. Finally, the proposed theory and method are used to analyze one concrete dam. The dynamic variability and mutation feature of the dam risk probability are analyzed. The remaining service life of this dam is forecasted. The obtained results can provide technology support for the project management department to make treatment measures of engineering and reasonably arrange reinforce cost. The principles in this paper have wide applicability and can be used in risk analysis for slope instability and other fields. | SU HuaiZhi WEN ZhiPing HU Jiang WU ZhongRu | 2009 | Science China(Technological Sciences)2009，52，7： | 23 |
| 2 | Study on early warning index of spatial deformation for high concrete dam显示文摘Owing to the deficiency in early warning for high concrete dam,a formula was established to characterize the deformation behavior of high concrete dam as a whole.The early warning index of spatial deformation was calculated by low probability principle on the basis of the deformation entropy formula proposed.The steps were as follows.Firstly,the probability method was utilized to define the degree of order and degree of chaos for each survey point.Secondly,the weight distribution among the survey points was calculated by projection pursuit analysis.Thirdly,the formula of holistic deformation entropy,which can represent the degree of order of high concrete dam,was established on the basis of synergetics and information entropy.Lastly,the early warning index of deformation entropy was computed by low probability method based on series of calculated deformation entropy values.An example showed that the dynamic property of deformation entropy is in accordance with both environmental variables and deflection deformation.Moreover,deformation entropy can be used to improve warning ability and safety management for high concrete dam. | LEI Peng CHANG XiaoLin XIAO Feng ZHANG GuiJin SU HuaiZhi | 2011 | Science China(Technological Sciences)2011，54，6： | 23 |
| 3 | Risk assessment method of major unsafe hydroelectric project显示文摘Based on the characteristics of major unsafe hydroelectric projects and the data from field detection, in situ monitoring, and regular safety inspection, the funda-mental principles of operation risk assessment are proposed in this paper. Mean-while, a three layer hierarchical system is constructed, and an improved analytical hierarchical process combining genetic algorithm and analytical hierarchical process is established, with corresponding program. The operation risk of some unsafe dam was assessed with the principles, method and program presented in this paper and the major factors which would affect the operation of the dam were pointed out. | WU ZhongRu SU HuaiZhi GUO HaiQing | 2008 | Science China(Technological Sciences)2008，51，9： | 11 |
| 4 | Singular value diagnosis in dam safety monitoring effect values显示文摘Based on the principal component analysis, principal components that have major influence on data variance are determined by the energy percentage method according to the correlation between monitoring effects. Then principal components are extracted through reconstructing multi effects. Moreover, combining with the optimal estimation theory, the method of singular value diagnosis in dam safety monitoring effect values is proposed. After dam monitoring information matrix is obtained, single effect state estimation matrix and multi effect fusion estimation matrix are constructed to make diagnosis on singular values to reduce false alarm rate. And the diagnosis index is calculated by PCA. These methods have already been applied to an actual project and the result shows the ability of the monitoring effect reflecting dam evolution behavior is improved as dam safety monitoring effect fusion estimation can take accurate identification on singular values and achieve data reduction, filter out noise and lower false alarm rate effectively. | GU ChongShi ZHAO ErFeng JIN Yi SU HuaiZhi | 2011 | Science China(Technological Sciences)2011，54，5： | 8 |
| 5 | A Study of Safety Evaluation and Early'warning Method for Dam Global Behavior显示文摘 | SU Huaizhi HU Jiang WU Zhongru | 2012 | Structural Health Moni- toring2012，11，3： | 1 |
| 6 | Dam health diagnosis and evaluation 显示文摘 | Wu Zhongru Su Huaizhi | 2005 | Smart Materials & Structures2005，14，3： | 1 |
| 7 | A study of safetyevaluation and early-warning method for dam globalbehavior 显示文摘 | SU Huaizhi HU Jiang WU Zhongru | 2012 | Structural health Monitoring: AnInternational Journal2012，11，3： | 1 |
| 8 | A study of safety evaluation and early- warning method for dam global behavior显示文摘 | SU Huaizhi HU Jiang WU Zhongru | 2012 | Structural Health Monitoring2012，11，3： | 1 |
| 9 | Optimization of ReinforcementStrategies for Dangerous Dams ConsideringTime-Average System Failure Probability and Benefit-CostRatio Using a Life Quality Index 显示文摘 | SU Huaizhi HU Jiang WEN Zhiping | 2013 | Natural Hazards2013，65，1： | 1 |
| 10 | Time - varying identification model for dam behavior considering structural reinforcement显示文摘 | Huaizhi Su Zhiping Wen Xiaoran Sun Meng Yang | 2015 | Structural Safety2015，，57： | 1 |
| 11 | A Study of Safety Evaluation and Early-warning Method for Dam Global Behavior显示文摘 | SU Huaizhi HU Jiang WU Zhongru | 2012 | Structural Health Moni- toring2012，11，3： | 1 |
| 12 | Dam health diagnosis and evaluation 显示文摘 | Wu Zhongru Su Huaizhi | 2005 | Smart Materials Structures2005，14，13： | 1 |
| 13 | Deep stability evaluation of high-gravity dam under combining action of powerhouse and dam 显示文摘 | Su Huaizhi Hu Jiang Li Jinyou | 2013 | International Journal of Ge- omechanics2013，13，： | 1 |
| 14 | Identifica- tion Model for Dam Behavior Based on Wavelet Network显示文摘 | Huaizhi Su Zhongru Wu Zhiping Wen | 2007 | Computer-Aided Civil and Infrastruc- ture Engineering2007，22，6： | 1 |
| 15 | Study on an Intelligent Inference Engine in Early-Warning System of Dam Health显示文摘 | Huaizhi Su Zhiping Wen Zhongru Wu | 2011 | Water Resources Management2011，25，6： | 1 |
| 16 | A Study of Safety Evaluation and Early-warning Method for Dam Global Behavior显示文摘 | SU Huaizhi HU Jiang WU Zhongru | 2012 | Structural Health Monito- ring2012，11，3： | 1 |
| 17 | A Study of Safety Evaluation and EarlyWarning Method for Dam Global Behavior显示文摘 | SU Huaizhi HU Jiang WU Zhongru | 2012 | Structural Health Monitoring2012，11，3： | 1 |
| 18 | Study on An Intelligent Inference Engine in Early-warning Sys- tem of Dam Health显示文摘 | Huaizhi Su Zhiping Wen Zhongru Wu | 2011 | Water Resources Manage- ment2011，25，6： | 1 |
| 19 | Rate effect on mechanical properties of hydraulic concrete flexural-tensile specimens under low loading rates using acoustic emission technique显示文摘 | SU Huaizhi HU Jiang TONG Jianjie | 2012 | Ultrasonics2012，52，7： | 1 |
| 20 | Macro-comprehensive Evaluation Method of High rock Slope Stability in Hydropower projects显示文摘 | SU Huaizhi LI Jinyou CAO Jiping | 2014 | Stochastic Environmental Research and Risk Assessment2014，28，2： | 1 |
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