A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Compressive Membrane Capacity Estimates in Laterally Edge Restrained Reinforced Concrete One-Way Slabs
The load capacity of laterally restrained reinforced concrete one-way slabs is estimated in compressive membrane theory with the use of a midspan deflection. However, the midspan deflection estimates exhibit large variability. The point of peak thrust leads to a more accurate index of the peak load capacity than midspan deflection. The calculation of the thrust within the compressive membrane theory is a maximum when the slab's axial shortening and the outward support movement are a maximum. The use of the peak thrust to select the peak capacity, when combined with a modification to Park and Gamble's (1980) compressive membrane theory, provides an improved overall correlation to the experimental data for a large range of span-to-thickness rations (2.7 < L/h < 28.3). In this study, peak midspan deflection estimates were developed to define the peak point of the load-deflection curve. The slab's axial concrete compressive strength and the peak concrete compressive strain are used within a curvature and geometrically based deflection equation, to preduct the midspan deflection. The post-peak trough and ultimate points are related empirically to the tensil membrane curve, and the generated load-deflection curve compares well with the experimental data.
Compressive Membrane Capacity Estimates in Laterally Edge Restrained Reinforced Concrete One-Way Slabs
The load capacity of laterally restrained reinforced concrete one-way slabs is estimated in compressive membrane theory with the use of a midspan deflection. However, the midspan deflection estimates exhibit large variability. The point of peak thrust leads to a more accurate index of the peak load capacity than midspan deflection. The calculation of the thrust within the compressive membrane theory is a maximum when the slab's axial shortening and the outward support movement are a maximum. The use of the peak thrust to select the peak capacity, when combined with a modification to Park and Gamble's (1980) compressive membrane theory, provides an improved overall correlation to the experimental data for a large range of span-to-thickness rations (2.7 < L/h < 28.3). In this study, peak midspan deflection estimates were developed to define the peak point of the load-deflection curve. The slab's axial concrete compressive strength and the peak concrete compressive strain are used within a curvature and geometrically based deflection equation, to preduct the midspan deflection. The post-peak trough and ultimate points are related empirically to the tensil membrane curve, and the generated load-deflection curve compares well with the experimental data.
Compressive Membrane Capacity Estimates in Laterally Edge Restrained Reinforced Concrete One-Way Slabs
R. W. Welch (author) / W. J. Hall (author) / W. L. Gamble (author)
1999
450 pages
Report
No indication
English
Limit capacity of laterally restrained reinforced concrete floor slabs in fire
| Online Contents | 2004
Nonlinear finite element analysis of laterally restrained reinforced concrete slabs
| British Library Conference Proceedings | 2005
Investigation of structural behaviours of laterally restrained GFRP reinforced concrete slabs
| British Library Online Contents | 2012