POST-TENSIONING THE CONNECTION REGION OF PRECAST POST-TENSIONED BRIDGE GIRDERS FOR CONTINUITY
نویسندگان
چکیده
منابع مشابه
Precast, Pretensioned, Post-Tensioned Concrete for Bridge Decks
The problem of concrete bridge deck deterioration on many of our newer as well as older bridges is severe, somewhat perplexing as to cause, and difficult to solve. Furthermore, the cost to highway agencies for their repair, and the cost of delay to the highway user, can be extremely large. The use of precast, prestressed concrete for bridge decks is a con cept of construction or reconstruction...
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The monitoring of a precast, prestressed girder bridge during fabrication and service provided the opportunity to observe temperature variations and to evaluate the accuracy of calculated strains and cambers. The use of high curing temperatures during fabrication affects the level of prestress because the strand length is fixed during the heating, the coefficients of thermal expansion of steel ...
متن کاملWhat Is Post-tensioning?
December 2000 OVERVIEW Post-tensioning is a method of reinforcing (strengthening) concrete or other materials with high-strength steel strands or bars, typically referred to as tendons. Post-tensioning applications include office and apartment buildings, parking structures, slabs-on-ground, bridges, sports stadiums, rock and soil anchors, and water-tanks. In many cases, posttensioning allows co...
متن کاملConstruction Condition and Damage Monitoring of Post-Tensioned PSC Girders Using Embedded Sensors
The potential for monitoring the construction of post-tensioned concrete beams and detecting damage to the beams under loading conditions was investigated through an experimental program. First, embedded sensors were investigated that could measure pre-stress from the fabrication process to a failure condition. Four types of sensors were installed on a steel frame, and the applicability and the...
متن کاملDesign and Construction of a Reinforcement Free Concrete Bridge Deck on Precast Bulb Tee Girders
This presentation describes the concepts involved in design and construction of a reinforcement-free bridge deck intended to provide cost effective, durable and more rapid construction for highway bridges. The new wide flanged or bulb tee precast prestressed concrete girder sections currently used in bridges allow for a shorter effective span for the bridge deck because of the wide girder flang...
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ژورنال
عنوان ژورنال: Stavební obzor - Civil Engineering Journal
سال: 2018
ISSN: 1805-2576
DOI: 10.14311/cej.2018.01.0004