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Dissertation
The use of small scale modeling to study the behavior of simply-supported reinforced concrete slabs with openings under uniform loading
Doctor of Philosophy (Ph.D.), Drexel University
1994
DOI:
https://doi.org/10.17918/00010192
Abstract
The small scale modeling techniques are implemented to carry out an extensive experimental study on the complex behavior of reinforced concrete slabs, with particular emphasis on slabs with openings. A total of thirty small scale model slabs were constructed (at one tenth scale) and tested for this investigation. Eight of the slabs tested were solid slabs which were studied for variation in the method of reinforcement (uniform isotropic reinforcement compared to strip method reinforcement), and for variation in the amount of top corner reinforcement. The remaining 22 slabs were slabs with one or two openings at various locations and of various sizes. The slabs were tested using uniformly distributed monotonic loading to failure. The test results were correlated and compared to analytical solutions, and to each other. Overall, the test results on the slabs indicate that the analytical solutions of the slab configurations tested are on the conservative side. It was found from these tests that slabs designed using the strip method behaved satisfactorily and were comparable in behavior to slabs designed using other methods, such as the yield line theory. Three different opening sizes were studied (K = 1/4, 1/2, and 5/8) where K is the ratio of the opening side length to the slab length. It was found that the strength of the slab is not greatly reduced by the presence of the opening, up to a value of K = 1/2, as long as the steel in the area disturbed by the opening is redistributed around the opening edges. In the slabs which had no redistributed steel around the opening, the load carrying capacity was reduced (by up to 30%) especially for uniformly reinforced slabs, as opposed to slabs designed using the strip method. The behavior of slabs with two openings at three different locations is reported and analyzed. All such slabs showed no sign of excessive weakness despite the presence of two openings.
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Details
- Title
- The use of small scale modeling to study the behavior of simply-supported reinforced concrete slabs with openings under uniform loading
- Creators
- Salah Mohammed Sagur
- Contributors
- Harry George Harris (Advisor) - Drexel University, Drexel University (1970-)
- Awarding Institution
- Drexel University
- Degree Awarded
- Doctor of Philosophy (Ph.D.)
- Publisher
- Drexel University; Philadelphia, Pennsylvania
- Number of pages
- xx, 331 pages
- Resource Type
- Dissertation
- Language
- English
- Academic Unit
- College of Engineering (1970-2026); Drexel University
- Other Identifier
- 991021889000804721