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论文类型：会议论文

发表时间：2006-01-01

收录刊物：EI、CPCI-S

卷号：324-325

页面范围：51-+

关键字：creep; damage; failure process; numerical simulation; MFPA(2D)

摘要：The phenomenon creep fracture is well-known for concrete. In the present paper, the Material Failure Process Analysis (MFPA(2D)) model for concrete in the failure process is coupled in series with the time-dependence of the concrete damage and deformation. Further, the progressive creep failure of concrete specimens under constant tensile loading was numerically simulated and the typical time-dependent deformations: the transient creep, the steady-state creep and the accelerating creep were also represented. The numerical simulations indicate that the macroscopic creep failure is induced by clusters of micro-fractures on a mesocopic scale. The above numerical results offer us some theoretical indications and instructions to further investigate the instability failure mechanisms of engineering concrete structures in civil and hydraulic engineering.