prestress


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prestress

[¦prē′stres]
(engineering)
To apply a force to a structure to condition it to withstand its working load more effectively or with less deflection.

prestress

1. The stress developed in prestressed concrete.
2. To apply loads to a structure or to a structural element for the purpose of beneficially modifying internal stresses.
References in periodicals archive ?
pe]--effective stress transferred to the pretensioned member (which considers the prestress losses due to elastic shortening, conditioned by the concrete's modulus of elasticity).
At an approximate contract value of $570,000, Oldcastle Precast - Central Pre-Mix Prestress manufactured and delivered the prestressed concrete Super Girders: (5) five Super Girders at 157'-8” long; (5) five Super Girders at 154'-8” long and (5) five Super Girders at 170'-2” long.
The experimental program was developed with two main objectives: to study the time evolution of the prestress applied to the structure and to verify the bridge structural behavior under the action of loads simulating the action of a vehicle.
Wave-prestress and wave-material interactions are described for nonlinear propagation of longitudinal waves in materials (i) with inhomogeneous prestress and (ii) with weakly variable physical properties.
The average loss of prestress following release of the clamps due to camber was 16.
As a result of the consolidation agreement, United Concrete Products will now offer clients an expanded product portfolio that features precast, prestress, pipe and pile services.
This research should include instrumenting long-span precast pretensioned girders during all phases of fabrication and construction and comparing the measured strain at the end zones, prestress losses, deflections, and cambers with the calculated values.
The aim of this study was to examine the influence of the prestress of the center pole on the displacements of treads to see if it was a determining factor for the behavior of the stair.
Agencies can realize further benefits by incorporating prestress (in the form of pretensioning or posttensioning) into the precast panels.
In the first mechanism, the stress variation can lengthen the debonded surfaces of strands adjacent to the crack surfaces, reducing available prestress in other sections and initiating additional flexural cracks on either side of existing cracks.