The behaviour of slab column junction of reinforced concrete flat slab structures, subjected to various combinations of vertical load and moment, was studied. Two different failure modes were investigated, (i) Shear failure. (ii)Flexural failure. The theoretical approach of the shear failure based on the equilibrium of the internal forces in a slab and the compatibility of the deformation of the concrete and steel. The failure criteria is assumed to be the failure of a concrete cone under biaxial compression in the compressive zone at the vicinity of the column faces. The analysis of the flexural failure was achieved by studying the yield line patterns and using the virtual work method. The theoretical method of analysis was applied for internal columns and extended to the case of external columns. To fill in the gap of available experimental data ten square slabs of 5 ft. side lengths and three circular slabs of 5 ft, diameter, and 4 in. thick simply supported along the edges were specially designed and tested under different combinations of axial load and bending moment. The proposed analysis is applied to these slab tests and a comparison between the observed and predicted failure loads is presented. The theoretical analysis is applied to all other available slab tests and compared with the experimental findings. Good agreement is obtained between the test and calculated loads. A number of conclusions are drawn from these comparisons as well as from the experimental observations. Some suggestions are also made for further research on the subject.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:338239 |
| Date | January 1970 |
| Creators | Anis, Nader Nabil |
| Publisher | Imperial College London |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Source | http://hdl.handle.net/10044/1/17669 |
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