| Title |
Structural Optimization of Double-Layer Vault System according to Mathematical Programming Method |
| Authors |
Kim Ho-Soo ; Park Young-Sin ; Lee Han-Joo |
| Keywords |
Double-Layer Vault System ; Size and Shape Decision ; Mathematical Programming ; Sensitivity Analysis ; Optimization Technique |
| Abstract |
This study presents the shape decision and structural optimization techniques for the double-layer vault system. Double-layer vault system takes less weight than general space frame structures and is widely used with the advantages of the lightweight structure, mass production and quick construction. But, the initial design of double-layer vault system depends on the structural engineer's experience and the repeated trial and error. Therefore, the optimization of double-layer vault system by controling displacement and stress needs a method to determine the optimal shape. First, this study develops the shape decision method for modeling double-layer vault system and presents the size and shape optimization techniques that can select main design valuables according to the radius of curvature, lattice division and height. Also, the automated computation of joint coordinates and numbering technique, and automatic input of the load are considered for the shape modeling. Finally, the optimal design and algorithm using sensitivity analysis technique through mathematical programming method are verified through the analysis example. |