Use this URL to cite or link to this record in EThOS: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.622337
Title: The interaction between slab and columns in flat slab construction
Author: Chan, Hon Chuen
Awarding Body: University of London
Current Institution: Imperial College London
Date of Award: 1965
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Abstract:
This thesis in concerned with the effect of the overall stiffness of the slab, acting in conjunction with the columns, on the restraining moment at the column due to unequally vertically loaded panels; and on the horizontal deflection of the slab due to wind load. An elastic analysis is used to determine the momentrotation relation at the joint of the column and slab. The dissipation of the bending moment from the joint to the field of the slab is computed. Further solutions are obtained for vertical loading on the slab. One panel, four panel and infinite slab are considered. A small scale perspex model is used to verify the elastic solutions and good agreement is obtained. Tests were carried out on a full scale one panel reinforced concrete flat slab designed with the help of the elastic solution. The behaviour of the slab subjected co wind as well as vertical load was observed to be satisfactory. Correlation between the experimental results and theory is reasonably close. A yield line analysis for a flat slab subjected to wind and vertical load is presented. The experiment confirmed the predicted failure mechanism and the ultimate strength. The effect of slab stiffness on the column restraining moment is studied and a simple effective width method is suggested to estimate the restraining moment at the column head. A suitable bending moment distribution is suggested for the design of the slab to resist this restraining moment and wind moment. The effective width of the slab to be assumed in calculating the horizontal deflection of the structure is also investigated and an approximate expression is proposed. The results are related to current design practice, which is found to be less than satisfactory, particularly in respect of wind loading.
Supervisor: Sparkes, S. R. ; Chapman, J. C. Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.622337  DOI: Not available
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