Development Of The Nonlinear Fiber Beam Element Based On SiPESC Platform

With the development of high-rise buildings in civil engineering, more stringent building standards for building were required by people. As an important form of architectural structures, the safety of reinforced concrete structure, especially in extreme loads, was paid attention in more cases by engineers. Elastoplastic fiber beam, a widely used element in the field of civil engineering,which was fit for different cross-sectional shapes or different forms of reinforcement was used to simulate the reinforced concrete structures into the plastic stage with extreme loads. Fiber beam module based on the finite element software platform, SiPESC, developed by Dalian University of Technology (DUT) was programed with C++ language.The versatility, scalability, and other modern software design patterns were fully taken into consideration. This thesis includes the following four parts:1 Discussion of the theory of nonlinear fiber beam element and the program implementa-tion in SiPESC platform was narrated.2 The summary of one-dimensional constitutive model for reinforced concrete was com-pleted.3 The integration of displacement control and pushover control algorithms was accom-plished.4 By comparison with the results of OpenSees, fiber beam module was verified correct. The safety of engineering structure was evaluated in our analysis, which proved the feasibility and practical value of nonlinear fiber beam module.