Study On Analysis And Back-Analysis Model Of Layer Property For Roller Compacted Concrete Dam

Aiming at gradually varied property of roller compacted concrete dam layer, the layer property and analysis model of equivalent parameter are studied in this dissertation, combining with the task of Chinese Ministry of Education "Back Question and Its Application for roller compacted concrete dam ". The main contents are as follows:(1) Applying the least potential energy principle and the least complementary energy principle, a formula for determining the rang of layer effect zones' thickness of RCCD is presented, and factors affecting the thickness are discussed.(2) Based on equivalent deformation assumption, a model is established to analyze equivalent elastic modulus and equivalent poisson's ratio, and back analysis equivalent elastic modulus and equivalent poisson's ratio of roller compacted concrete dam combining with the prototype monitoring data and finite element method.(3) A analysis model of equivalent temperature linear expansion coefficient is established and analyzed its property, via applying mechanics of composite material theory. In addition, statistical and deterministic mathematical models are used for back analysis of equivalent temperature linear expansion coefficient based on the prototype monitoring data.(4) The influence of two-way different elastic modulus and poisson's ratio changes on displacement, the action of shear strength parameter and seepage force on layer stability sliding are discussed via theory research and analysis case.