Reinforcement Design Algorithm For Concrete Shells
The absence of universally accepted solutions in the structural concrete codes for the design of reinforcement in shells gives rise to the problem of calculating the required reinforcement in these structures. The constant development of the computer s performance and storage capacity combined with the
powerful numerical methods reveal the need for a standard procedure to design shells subjected to membrane and flexural forces. In this paper, the solution for the design of the required reinforcement in concrete shells is presented based on a complete iterative computational algorithm to design shell elements subjected to combined membrane forces and bending moments. In the design equations, the reinforcement will contribute to tension and the concrete
compression struts parallel to the crack direction will contribute to compression. The reinforcement is assumed to have two orthogonal layers placed in the top and bottom surfaces with appropriate covers. Each reinforcement layer has reinforcing bars placed orthogonally. For the concrete compression
struts, the stress is assumed to be uniformly distributed in the depth of Whitney s stress block. This design algorithm is achieved by developing a design code (DRCSH) based on a complete iterative computational algorithm. This program can be used as a stand-alone version, to determine the load carrying
capacity of critical points in reinforced concrete panels, plates and shells; and to verify the design code on the element level, five experimental models are designed. The designed elements give calculated ultimate strengths from 7 to 18% higher than test results values, except one model, which confirms the
adequacy of the design algorithm, and the developed design code.
- Each author retains the right to use the work for non-commercial purposes and for further research and spoken presentations.
- Each author retains the right to use the illustrations and research data in his/her future work.
- Only one offprint is provided free for each author. The authors can order offprints at the proof stage at certain rates depending on the number of additional copies required and the year of publication.
The publisher of the journal has all rights for publication in the paper, electronic and facsimile formats and for electronic capture, reproduction and licensing in all formats now and in perpetuity in the original and all derivative works.