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Experimental Study of RCC Gravity Dam Strengthened with Steel Reinforcement in Monolith for Seismic Resistance

Author: ZhangBin
Tutor: ChenJianYun
School: Dalian University of Technology
Course: Hydraulic Structure Engineering
Keywords: RCC gravity dam Dynamic model test Seismic measures Reinforcement Damage Optimization
CLC: TV312
Type: Master's thesis
Year: 2009
Downloads: 183
Quote: 2
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Abstract


With the fast development of the national economy, energy development and utilization of hydropower in China is entering an important period of development. The large number of world-class high concrete dam in southwest China started construction in these areas is the high-intensity earthquake-prone areas, and some fortified seismic intensity even reached Ⅸ degrees. The seismic safety of these high concrete dam will be directly related to the relevant areas of the national economy and people's lives and property safety. The RCC gravity research seismic failure modes, failure mechanism and seismic measures for the purpose of RCC gravity dam section Dynamic model test start, combined with the failure mode of the numerical calculation of gravity and seismic measures to discuss earthquake with tendons optimization problem. Provide a reference for the engineering staff targeted engineering measures Dam Seismic Design. Specific to do the work of the following five aspects: 1. To simulate actual engineering seismic reinforcement measures, explore the characteristics of fine wire in the simulation of concrete. Four-point bending test analog reinforcement in the appropriate tendons case can not consider the effect of the bond-slip of reinforcement and concrete conclusions. In this case, similar to the rate of reinforcement amount: Newton's third law similar to the bond strength criteria derived a similar rate as a similar amount of reinforcing steel reinforced effective area than feet. To simulate concrete matrix mixed with clay or rubber particles to enhance the simulation of Plasticity explore the physical properties of materials of high plasticity simulation. Provide a reference for the similar model in the the incomplete geometry similar case of large deformation response and plastic concrete material. 3. Underwater electro-hydraulic servo earthquake simulation system Areva typical Monolith no of seismic measures with local analog the reinforcement seismic measures model test of RCC gravity dam. Analysis of Plant Monolith power failure modes, research local reinforcement destroy the power of retaining and spillway section under seismic loads nonlinear reaction. Using the the ABAQUS platform of Areva RCC gravity dam finite element analysis. Elastoplastic damage constitutive modeling of concrete nonlinear, similar to the ratio of the amount of reinforcing steel according to the model test prototype finite element model of the local seismic reinforcement of the dam, the Barrage Block seismic reinforcement impact analysis. Optimization reinforcement program calculated and analyzed the effects of different forms of local seismic reinforcement of the power of the Barrage Block nonlinear reaction, specific power magnification, extremal stress extremum displacement, damage development, unrecoverable strain and overall energy-consuming aspects to explore. At the same time to qualify to regulate the amount of reinforcing steel in the elastic case with which to compare.

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CLC: > Industrial Technology > Hydraulic Engineering > Hydraulic structures > Structural theory and computational > Structural Dynamics
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