| Title |
Computational Optimum Topology Evaluation for Strut and Tie Model Design of Reinforced Concrete Structures |
| Authors |
Lee Dong-Kyu ; Shin Soo-Mi |
| Keywords |
Strut-and-tie Model Design ; Reinforced Concrete ; SIMP Material Topology Optimization ; Synthetic Design |
| Abstract |
This study presents topology information for evaluating optimal strut-and-tie models in reinforced concrete structures. The unknown strut-and-tie model is realized by using a continuous SIMP material-based topology optimization method. In tradition strut-and-tie model designs2),3) orientate the strut-and-tie model along the force paths with respect to elastic stress distribution and repeatedly generate truss models empirically or by intuition. These conventional methods involve a trial-and-error procedure based on designer's experience and heuristic methods. The automatic machinery of the proposed SIMP material topology optimization method provides that truss models can be quantitatively developed from optimal topology information. The present synthetic strut-and-tie model design methodology consists of a structural model, an optimal topology model, a strut-and-tie model and a reinforced model in practice. Numerical applications are studied to verify that the proposed synthetic and automatic design is suitable for developing and analyzing the strut-and-tie model for reinforced concrete structures with D(disturbed stress) regions such as a beam-to-column, a foundation and a low-rise shear wall with openings. |