A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Behavior of Partially Restrained Reinforced Concrete Slabs
This study was performed in conjunction with a Federal Emergency Management Agency program to plan, design, and construct Keyworker blast shelters. Keyworker shelters are box-type shelters in which damage is more likely in the roof slab than in the walls or floor. This study investigates the effect of partial edge restraint on the strength, ductility, and failure mechanisms of a slab. Sixteen one-way, reinforced concrete plate elements were tested in a specially designed reaction structure under uniform static water pressure. Facilities were designed and constructed to measure the slab end actions, including thrusts, moments, and rotations. The primary parameters investigated included the span-thickness ratio, reinforcement ratio, and degree of edge restraint. Most slabs were loaded until significant tensile membrane forces developed. Rotational restraint significantly influenced overall slab behavior. If a slab is to develop significant compressive membrane forces, both lateral and rotational restraint must be provided. Small rotational freedoms had a relatively small effect on the slab's compressive membrane response. With large rotational freedoms, however, the slabs generally snapped through to the tensile membrane stage before significant thrusts were developed. Thin slabs generally exhibited a mush better tensile membrane response than thicker slabs and underwent larger deflections before collapse. Recommendations are presented and an analytical procedure which considers nonlinear geometric behavior is proposed for investigating total slab response. Keywords: Blast effect, Concrete slabs.
Behavior of Partially Restrained Reinforced Concrete Slabs
This study was performed in conjunction with a Federal Emergency Management Agency program to plan, design, and construct Keyworker blast shelters. Keyworker shelters are box-type shelters in which damage is more likely in the roof slab than in the walls or floor. This study investigates the effect of partial edge restraint on the strength, ductility, and failure mechanisms of a slab. Sixteen one-way, reinforced concrete plate elements were tested in a specially designed reaction structure under uniform static water pressure. Facilities were designed and constructed to measure the slab end actions, including thrusts, moments, and rotations. The primary parameters investigated included the span-thickness ratio, reinforcement ratio, and degree of edge restraint. Most slabs were loaded until significant tensile membrane forces developed. Rotational restraint significantly influenced overall slab behavior. If a slab is to develop significant compressive membrane forces, both lateral and rotational restraint must be provided. Small rotational freedoms had a relatively small effect on the slab's compressive membrane response. With large rotational freedoms, however, the slabs generally snapped through to the tensile membrane stage before significant thrusts were developed. Thin slabs generally exhibited a mush better tensile membrane response than thicker slabs and underwent larger deflections before collapse. Recommendations are presented and an analytical procedure which considers nonlinear geometric behavior is proposed for investigating total slab response. Keywords: Blast effect, Concrete slabs.
Behavior of Partially Restrained Reinforced Concrete Slabs
L. K. Guice (author)
1986
199 pages
Report
No indication
English
Punching of Restrained Reinforced Concrete Slabs
| NTIS | 1991
Behavior of Partially Restrained Slabs under Concentrated Load
| Online Contents | 1994
Computer Modeling of Restrained Reinforced Concrete Slabs in Fire Conditions
| Online Contents | 2004
Computer Modeling of Restrained Reinforced Concrete Slabs in Fire Conditions
| British Library Online Contents | 2004