Evaluation of the reliability of hydraulic structures

Lyatkher, V. M.; Zolotov, L. A.; Ivashchenko, I. N.; Yancher, V. B.

doi:10.1007/bf01440443

Cited by 6 publications

(4 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6, pp. 8-11, June, 1988. important hydraulic structures an annual probability of incidents from I0 -4 to i0 -5 can be considered permissible~ This value agrees well with the ratio of the mean annual number of incidents on dams of all designs and classes to the total number of dams [6,7].…”

Section: (1)mentioning

confidence: 90%

“…ic) shows that already at distances of the order of 1-2 m (radius of correlation), negligibly small level of statistical relation of the values of the soil characteristics is reached. The negligibly small value of the radius of correlation r i in comparison with L according to (6) makes it possible to neglect also the quantity DqL = O. In this case the value of the reliability index R becomes equal to 0.9992, which is greater than R*.…”

Section: (1)mentioning

confidence: 93%

“…The basic principles of the proposed engineering method of numerical evaluation of reliability are examined in [6,7]. …”

mentioning

confidence: 99%

See 2 more Smart Citations

Engineering method of calculating the reliability of hydraulic structures

Ivashchenko¹,

Yancher²

1988

Hydrotechnical Construction

Self Cite

View full text Add to dashboard Cite

The introduction of the methodology of reliability theory into the practice of designing, constructing, and operating hydraulic structures makes it possible to more well-foundedly solve problems of optimization of engineering decision being made. In this case, the quantitative indices of reliability, along with cost and technological factors, perform the role of optimization criteria. The considerable labor intensity of probabilistic calculations prevents their wide use. We will examine some techniques of simplifying the method of calculating reliability.The random variability of the characteristics of effects, materials, foundation rocks, as well as of the parameters of the initial state and construction and operating conditions determine the nonzero numerical value of the probability of failure P (or damage) of structures during a fixed time (for example, during a year or period of operation T). The probability of no-failure operation (i -P) is taken as the index of reliability [i, 2, 1.0].The probabilistic nature of the occurrence of limit states of hydraulic structures is taken into account by design standards when designating the probability of the design characteristics of effects and properties [3~ However, the deterministic form of such consideration leads to the necessity of regulating the limited number of design cases related to individual types of limit states and determining the combination and level of design effects and characteristics of the properties. As a consequence of this, noneconomical or extremely risky design decisions are possible. The indicated shortcomings are eliminated, as is known [i, 2, 7-10], by using a single index of the state of the structure -the probability of its no-failure (reliable) operation R.

show abstract

Section: (1)mentioning

confidence: 90%

Section: (1)mentioning

confidence: 93%

See 1 more Smart Citation

Engineering method of calculating the reliability of hydraulic structures

Ivashchenko¹,

Yancher²

1988

Hydrotechnical Construction

Self Cite

View full text Add to dashboard Cite

show abstract

“…At present the most prevalent method is that of evaluating the safety of operating structures based on comparing individual indices of their state determined, as a rule, from the results of instrumental measurements, with the "maximum allowable values" [1,2,4,6,9]. In this case, not all information about the state of the structure is used.…”

mentioning

confidence: 99%