Fatigue Reliability of Prestressed Concrete Bridges
Experimental studies indicate that fatigue is a random phenomenon. Therefore, the approach is based on probabilistic methods. The fatigue life of the prestressed concrete girder is estimated...
Statistical Properties of Prestressed Concrete Beams in Shear
Monte Carlo simulations were performed on prestressed concrete rectangular and tee-section beams in shear produced by a single concentrated load at mid span. The truss analogy model was...
Vibration Tests and Damage Detection of P/C Bridges
A three-span countryside P/C bridge has been found to have excessive deflections in two of the three spans. It is reported that the prestresses in tendons of two girders of different spans...
Prestressed Concrete Pipe Field Test
Strain changes in the prestressing wires and deflections of a 2130-mm-diameter precast (embedded cylinder), prestressed concrete pipe were measured during earth backfilling operations....
In-Situ Evaluation of 30-In. (762-mm) Diameter Prestressed Concrete Lined-Cylinder Pipeline
The results of an extensive investigation to evaluate the in-service condition and future serviceability of an existing lake water make-up pipeline are briefly described herein. The pipeline...
Combined Load Testing of Prestressed Concrete Cylinder Pipe
A series of combined load tests were run on prestressed concrete cylinder pipe in order to evaluate a proposed new method of design for pipe made to AWWA Standard C301. These tests involved...
Innovative Concept for Prestressed Pressure Pipe
A new design and manufacturing concept was developed by General Atomics for prestressed pressure pipe. With this new concept, patented in the U.S. and in the major industrialized nations,...
Failure of Prestressed Concrete Embedded Cylinder Pipe
In 1964, the Ontario Provincial Government undertook to supply water to the City of London (current population 300,000). The supply source was from Lake Huron near Grand Bend, Ontario...
Evaluation of Combined Load Tests of Prestressed Concrete Cylinder Pipe
Combined load tests of prestressed concrete cylinder pipe, presented by Tremblay in the proceedings of this conference, are analyzed. Data gathered during the tests includes first visible...
A Prestressed Kevlar/FRP Structural System
The strength/stiffness characteristics of a new lightweight composite structural system have been investigated in this study. The proposed system is constructed of FRP(E-glass/isophthalic...
Replacing Bridge Decks
U.S. bridges last an average of 68 years, their decks 35 years. But few bridges have been built with provisions for future deck repair, the only criterion being lowest first cost. During...
Optimization of Cable Prestresses of Cable Stayed Bridges Based on Minimum Strain Energy Criterion
In this study, an attempt is made to determine the optimum cable prestresses based on the strain energy criterion. The validity of the strain energy criterion on the optimum cable prestresses...
Predicted Fatigue Life Behavior of Stay Cables
Monte Carlo simulation results are used to illustrate the relationship between the fatigue lives of short prestressing strand test specimens and long strand stay cables. Long stay cables...
Fatigue of Reinforcement in Partially Prestressed Beams
A summary of the findings of an extensive experimental program on the fatigue characteristics of partially prestressed concrete beams is described. It is observed that the stress range...
Study of Partially Prestressed Beams With Unbonded Post-Tensioning
Test on partially prestressed members with bonded Post-Tensioning started recently. Experimental information regarding partially prestressed members having unbonded post-tensioning is...
Equilibrium-Serviceability Design of Hyperstatic P. C. Beams
A practical flexural design procedure for continuous prestressed concrete girders based on simulataneously ensuring specified margins of safety against both limit states of section and...
Forces in Unbonded Tendons
A rational analysis procedure for the calculation of tendon forces in prestressed beams with unbonded tendons is discussed. The prestressing tendon is analyzed as a tight-string which...
Behavior of Externally Prestressed Concrete Girders
A new technique for prestressing concrete girders is presented. The girders are externally prestressed by epoxy-bonding fiber-composite plates to the tension flange of the cambered girders....
Shear Strength of P.P.C. Beams
50 beams of partially prestressed concrete were tested and 82 data of the ultimate shear-strength were obtained. Based on these results, this paper studies the effects of the degree of...
Analysis of Slender Prestressed Concrete Columns
This paper briefly describes an analytical model developed to study slenderness effects in prestressed concrete columns and walls and predict the characteristics of such members over a...
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