Three-dimensional Finite Element Simulation And Research On Induced Joints Of Concrete Side Walls

Temperature effect is the main reason that causes the cracks in the concrete side wall, and the research and analysis have important significance to the prevention and control of the cracks in the super long concrete basement structure. In this article, to the actual project of Shen Zhen Hua Run Center basement and Shen Zhen Bao An T3 Terminal Building basement structure as the research object, the introduction of concrete elastic plastic damage theory, nonlinear simulation analysis of the super long underground side wall concrete structure temperature field and stress field, and to the selection of inducing joint section of the structural weakening rate and spacing are discussed. The main content is:1 ? Using ABAQUS to establish experimental specimens of 3D nonlinear finite element model, respectively, comparative analysis of experiment and simulated the temperature field and stress field of process data, to verify the validity of the ABAQUS nonlinear simulation and Simulation of side wall find reliable ABAQUS thermal analysis, thermal stress analysis and the Elastic-plastic Damage parameters.2 ? Based on the side wall of the basement of Shen Zhen Hua Run Center and Bao An Shenzhen T3 Terminal Building as the model prototype, the nonlinear finite element model is established to analyze the temperature field and stress field. On the basis of this model, the threedimensional nonlinear finite element model of the underground side wall is analyzed. Analysis and comparison of both side walls of the temperature field, temperature field and plastic strain, it is found that the inducing joints can be the early temperature stress to induce inducing joints to produce stress concentration, effectively reduce the early temperature stress and to prevent the disorder of cracks.3?In the Shen Zhen Hua Run Center basement model, weaken the arrangement of different section rate and spacing of the inducing joints and nonlinear simulation analysis, comparison and Research on the temperature field, stress field and plastic strain distribution; this based on thecross section of different weakening rate and not with the spacing of inducing joints of the side wall is analyzed with the finite element stress field and plastic strain field of the path and process of comparative analysis. Analysis and comparison of the effect of different distance and different section of the induced gap. It is found that the effect of the model is 30% and the interval is and the interval is 24 m, which is the result of the model.