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Game model of safety monitoring for arch dam deformation

Science china(Technological Sciences) 2008年第S2期51卷 76-81页

作者： su huaizhi1,2,WU zhongru1,2.gu yanchang1,2.hu jiang1 & wen zhiping3 1 College of water conservancy and hydropower engineering,hohai university,nanjing 2.0098,china 2 National engineering Research Center of water Resources Efficient Utilization and engineering Safety,nanjing 2.0098,china 3 Department of Computer engineering,nanjing Institute of Technology,nanjing 210013,china College of water conservancy and {2. engineering Hohai University Nanjing China National engineering Research Center of water Resources Efficient Utilization and engineering Safety Nanjing China Department of Computer engineering Nanjing Institute of Technology Nanjing China

Arch dam deformation is comprehensively affected by water pressure,temperature,dam's structural behavior and material properties as well as other *** them the water pressure and temperature are external factors(source factors) that cause dam deformation,and dam's structural behavior and material properties are the internal factors of deformation(resistance factors).The dam deformation is the result of the mutual game playing between source factors and resistance ***,resistance factors of structure and materials that reflect resistance character of arch dam structure are introduced into the traditional model,where structure factor is embodied by the flexibility coefficient of dam body and the maximum dam height,and material property is embodied by the elastic modulus of *** the basis of analyzing the correlation between dam deformation and resistance factors,the game model of safety monitoring for arch dam deformation is put forward.

关键词： arch dam deformation monitoring model flexibility coefficient game theory

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Evaluation model for service life of dam based on time-varying risk probability

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Science china(Technological Sciences) 2009年第7期52卷 1966-1973页

作者： su huaizhi {2. zhiping hu jiang WU zhongru College of water conservancy and {2. engineering of hohai university Nanjing 210098China National engineering Research Center of water Resources Efficient Utilization and engineering Safety Nanjing 210098China College of Computer engineering Nanjing Institute of TechnologyNanjing 211167China

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 re{2.lts can provide technology {2.pport for the project management department to make treatment mea{2.res 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.

关键词： dam service life evaluation time-varying risk probability fuzzy probability theory information entropy theory

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砼-岩一体两介质破裂过程中声发射特征试验

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科学技术与工程 2019年第35期19卷 317-321页

作者：宿辉白延杰胡宝文李琦尹文强河北工程大学水利水电学院

研究砼-岩一体两介质在受载条件下的声发射特征,可为预测该类型材料的破裂失稳提供科学依据。为此开展了砼、岩石、砼-岩一体两介质在单轴压缩条件下的声发射特征研究。结果表明:砼-岩一体两介质的能量计数曲线在破裂演化过程中呈现双峰... 详细信息

研究砼-岩一体两介质在受载条件下的声发射特征,可为预测该类型材料的破裂失稳提供科学依据。为此开展了砼、岩石、砼-岩一体两介质在单轴压缩条件下的声发射特征研究。结果表明:砼-岩一体两介质的能量计数曲线在破裂演化过程中呈现双峰值,峰值1的声发射特征可作为岩石材料失稳的预判;声发射事件的时空演化规律表明砼-岩一体两介质的非稳定破裂发展先从砼材料开始,而后通过砼-岩胶结面诱导岩石材料发生失稳破坏;声发射空间定位聚类结果表明砼材料先发生剪切失稳,而后通过失稳过程中所释放出的断裂动能以及骨料的应力集中,诱导岩石材料发生劈裂破坏。

关键词：一体两介质声发射能量计数空间定位聚类分析

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