Results 151 to 160 of about 1,707 (203)

Applying Prestressed CFRP Sheets to Restore Prestress Losses in Prestressed Concrete Beams

SP-245: Case Histories and Use of FRP for Prestressing Applications, 2007
This paper has described how the issue of the rehabilitation of damaged structures has attracted the attention of researchers in order to resolve the undesired problems caused by increased traffic loads, corrosion, or impact damage. Appropriate methods are therefore essential for extending the lifespan of the structures and the application of carbon ...
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Redevelopment of Prestressing Force in Severed Prestressed Strands

Journal of Bridge Engineering, 2011
The flexural capacity rating of prestressed girders having severed or corroded strands often progresses by simply neglecting the contribution of the affected strands from the girder section and assessing the capacity. While this is an adequate approach at the affected section, it is conservative elsewhere along the span, assuming that fully bonded ...
Jarret Kasan, Kent A. Harries
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Ultimate Stress of Prestressing Steel in Prestressed Concrete Beams Strengthened by External Prestressing

Journal of the Korea Concrete Institute, 2004
This study deals with literature review, developing a predicting equation for the ultimate stress of internal and external prestressing steel, and an experimental test with the parameters affecting the ultimate stress of prestressing steel in prestressed concrete beams strengthened by external prestressing tendons.
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Magnetic detection of prestressing steel fractures in prestressed concrete

Materials and Corrosion, 1998
The paper deals with the remanent magnetism method (RM-method) to identify unsafe prestressed structures concerning sudden collapses of structural components due to fractures of the prestressing steel. It describes the non-destructive testing method that allows to localize fractures of single prestressing steel wires even in post-tensioned tendons. The
B. Hillemeier, H. Scheel
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Prestressed Concrete Girder with Multistage Prestressing Concept

ACI Structural Journal, 2003
Short- and medium-span bridges commonly use prestressed concrete (PSC) I-type girders in their construction. Prestressing in traditional PSC girders is usually applied once at the beginning stage of fabrication. The magnitude of the prestressing force is limited within allowable stresses at various construction stages. Consequently, for longer spans, a
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Softening hinges in prestressed and partially prestressed concrete structures

2021
This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
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Prestressed pin-jointed structures—Flexibility analysis and prestress design

Computers & Structures, 1988
Two classes of prestressable structures exist. Class I are geometrically rigid and statically indeterminate structures. Class II are statically and kinematically indeterminate structures with infinitesimal mechanism. In structures of class I, prestress by means of imposed lack of fit can substantially enhance the design, particularly when failure is ...
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Loss Of Prestress In Pretensioned Prestressed Concrete Beams.

1964
PhD ; Civil engineering ; University of Michigan, Horace H. Rackham School of Graduate Studies ; http://deepblue.lib.umich.edu/bitstream/2027.42/183771/2/6412657 ...
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The Influence of the Prestressing Level of the Fully Threaded Anchor Bar on the Corrosion Rate

Buildings, 2023
Peter Koteš, Jakub Kraľovanec, Koteš Peter   +2 more
exaly  

MAGNITUDE OF THE PRESTRESS AND THE PRESTRESSING FORCE FOR PRESTRESSED CONCRETE BEAMS

2020
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