Risk Analysis of Cracking Failure of Earth-rock Dam Based on Fuzzy Set Theory
[1]LI Zongkun,SONG Ziyuan,GE Wei,et al.Risk Analysis of Cracking Failure of Earth-rock Dam Based on Fuzzy Set Theory[J].Journal of Zhengzhou University (Engineering Science),2020,41(05):55-59.[doi:10.13705/j.issn.1671-6833.2020.03.019]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
41卷
Number of periods:
2020 05
Page number:
55-59
Column:
Public date:
2020-10-01
- Title:
- Risk Analysis of Cracking Failure of Earth-rock Dam Based on Fuzzy Set Theory
- CLC:
- -
- DOI:
- 10.13705/j.issn.1671-6833.2020.03.019
- Abstract:
- Only the randomness of variables was considered in the traditional reliability analysis for crack resistance of earth-rock dam. By introducing fuzzy set theory, the randomness and fuzziness of soil strain parameters and the fuzziness of failure criterion were considered comprehensively to establish the risk assessment model of cracking failure of earth-rock dam. Furthermore, the Monte Carlo simulation method was used to solve the upper and lower limits of fuzzy risk probability based on the interval numbers which were transferred from the fuzzy parameters by the level cut set. The model was applied to the cracking risk analysis of Maojianshan reservoir dam. When the level cut set α=0.5, the fuzzy risk intervals of cracking failure for 5 and 39.5 years of dam operation were [5.23%, 7.91%] and [28.91%, 32.49%], respectively. Compared with the conclusions based on the traditional risk determination, the result showed that the conclusions based on the fuzzy risk interval were closed to the actual situation of dam cracking, which could provide reference and basis for dam structure safety assessment and management.
- References:
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Last Update:
2020-10-23