Font Size: a A A

Rheological Damege Properties Analysis Of Frozen Soil

Posted on:2012-12-08Degree:MasterType:Thesis
Country:ChinaCandidate:J F ZhengFull Text:PDF
GTID:2210330362951516Subject:Geotechnical engineering
Abstract/Summary:PDF Full Text Request
Based on the research of multiple physical and mechanical properties offrozen soil decisively impact on the both disaster prevention and mitigationand engineering construction, the study of rheological and damage propertiesof frozen soil have got a great progress in recent years, however, it has stillnot formed that systematic construction of rheological and damage propertiesof frozen soil based on different loading methods, so, this research focus onthe different loading methods of rheological and damage properties of frozensoil.Firstly, the qualitative analysis of the frozen soil creep in theory isdiscussed.Secondly, based on the analysis of general frozen rheological theory, therules of Stress-strain relationship of different loading methods includingaging theory, genetic theory of creep, hardening theory and flow theorythrough mathematical and geometric diagram.Thirdly, according to the result of previous' experiments,as well as use ofnormalization methods and principles, different Characteristics of differentmodels of different models is got.What is more, through use of experimentaldata of previous researchers, this paper proposes a new model of somepractical significance of long-termed strength based on normalizationmethods and principles.Fourth, with the appliance of complex membranes scanning electronmicroscope of fine view study of frozen soil, this paper lead in the tensor ofdamage of frozen soil based on the basic theory of damage, in addition, itconducts the derivation of the formula of elastoplastic stress-strain anisotropyrelationship, to move forward a single step, the derivation of iterative schemeof finite element of frozen soil is also got. Then, after the starting of thenumerical analysis and simulation,according to the result of mumericalanalysis and simulation, the paper discusss the relationship between stress andtime in detailed...
Keywords/Search Tags:frozen soil, rheological, damage, mumerical simulation
PDF Full Text Request
Related items