Font Size: a A A

Research On The Reliability Of The Stability Of The Earth-rock Fill Dam And Its Application

Posted on:2007-07-29Degree:MasterType:Thesis
Country:ChinaCandidate:Q B YuFull Text:PDF
GTID:2132360212958546Subject:Structural engineering
Abstract/Summary:PDF Full Text Request
The evaluation of structural safety and reliability has stepped into the stage of practical use due to the development of the reliability theory. In the field of hydraulic structures, the influences of those nondeterministic factors involved in the analysis approaches become more and more signicant as these approaches for the structural stress, deformation and stability are increasingly improved. Therefore, the research on the reliability analysis of earth-rock filled dams is of practical importance for us to examine the present reliability level and to guide the design, construction, operation and management in earth-rock fill dam engineering.Firstly,Based on probability statistics and the reliability theory , in view of the characteristics of the earth-rock dam,this paper has elaborated the principle and method of the reliability analysis of soil slopes systematically , emphatically discussed the statistic method and characteristics of shearing strength of the dam material ,has concluded that Direct method should be adopted in the statistic of shearing strength of the dam material.Secondly with the "JC" method and the "Rosenblueth" method , this paper has applied the random field of soil parameters,combined with "Bishop" method and "Morgenstern - Price" method and derived the calculation formulae of the slope stability analysis in terms of soil parameter space variance and correlation.Finally this paper has computed and analysised the sensitivity of the soil parameter with the isotropic slope,it has concluded that the reliability index which has considered the self-correlation distance of the soil parameter is 5% to 10 % bigger than the one without considering the distance.It is concluded that two kinds of slip surfaces are Not unanimous. The reliability index of slope stability feeblers according to a lasting situation, short-term situation, occasionally situation and be able to meet regulatory requirements.
Keywords/Search Tags:earth-rock fill dam, stability of dam slope, reliability index, soil parameter model, sensitive analysis, project application
PDF Full Text Request
Related items