Simulation study on reinforced concrete deep beams with openings designed using topology optimization-STM method
To improve design rationality,a topology optimization-strut-and-tie model(STM)design method for reinforced concrete deep beams was proposed.A comparative study was performed between the method and the empirical design approach recommended by current Chinese standard codes.Six reinforced concrete deep beams with openings were divided into three groups for design,followed by corresponding nonlinear finite element static simulations.The results findings reveal that beams designed using the topology optimization-STM method can achieve an increase of over 20%in load-bearing capacity and about 30%in deformation capability,while reducing the amount of steel bars by 15%～25%.Additionally,these beams mitigated concrete tension damage in high-stress areas,notably in the corners of openings.The reduction in tension damage improved the efficiency of reinforcement utilization in these specific regions.Conclusively,the topology optimization-STMmethod offers valuable insights for future designs of reinforced concrete deep beams with openings.
reinforced concrete deep beam with openingstopology optimizationstrut-and-tie model(STM)empirical design method
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