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.
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.
The effect of prestress is implemented as an increase in the tensile strength of the rammed earth material considering the direction and magnitude of the prestressing force.
The results of the tests show that the prestressed GFRP-glulam beams exhibited a 38 percent increase in allowable bending stresses compared with reinforced GFRP-glulam beams without prestress and an approximately 95 percent increase compared with unreinforced glulam beams.
Prestress force is measured and verified in place before each layer is individually bonded.
For prestressed concrete bridge girders, the center of the prestress force generally lies lower than the neutral axis of the section.
The SCC girders performed comparably to conventional concrete girders, with measured prestress losses generally agreeing with predictions.