- Volume 11 Issue 6
Optimization scheme is presented for the design of precast prestressed double-tee beams used as slabs in the parking or market structures. The objective considered is defined by a function that minimizes the hight of the double-tee beam, including the prefabricated element and the concrete topping poured in a second phase. The Sequential Quadratic Programming method is adopted to solve the problem. As an example 12 double-tee beams are designed with the design loads of the current design code of our country. The results from optimization process show that at least 29cm less in overall height than that designed by PCI design handbook. The section determined from the optimization process was refined for practical considerations. A MathCad 7.0 Pro Spreadsheet was prepared to verify all ACI requirements for flexure, shear and deflections. Flexural tests are performed on four full-scale 12.5m prototype models and show that all the specimens are fully comply the flexural strength requirements as specified by ACI 318-95. The present optimization scheme can be used for wider application of the design of precast prestressed double-tee beams with different materials and configurations particularly for in a large scale or for important designs.
- Building Code Requirements for Reinforced Concrete and Commentary (ACI 318-95) ACI 318-95
- Warszawa/Martinus Nijhoff Publishers Criteria and Methods of Structural Optimization Brandt A. M.
- 건설교통부제정 철근콘크리트 구조설계기준 한국콘크리트학회 · 대한건축학회
- Computers and Structures v.8 no.1 Optimality Criteria and Mathematical Programming in Structural Weight Design Fleury C.;Geradin M.
- Martinus Nijhoff Elements of Structural Optimization Haftka R. T.;Kamat M. P.
- Optimum Structural Design Kirsch U.
- Prestressed Concrete Magnel G.
- Foundations of Structural Optimization: a Unified Approach Morris A. J.
- PCI Design Handbook (4th ed.)
- Proceedings of the Second National Conference on Electronic Computation Structural Design by Systematic Approach Schmit L. A.
- Interative Structural Design, Appendix A. Spillers W. R.
- Numerical Optimization Techniques for Engineering Design Vanderplaats G. N.
- 콘크리트학회논문집 v.11 no.3 최적이론에 의하여 설계된 최소 깊이 더블티 슬래브의 휨거동 평가 유승룡;김대훈;유재천
- 콘크리트학회논문집 v.11 no.4 최적이론에 의하여 설계된 최소 깊이 더블티 댑단부 전단거동 평가 유승룡;김대훈