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Showing 1 to 12 of 12 for “"Post-tensioned concrete"”.
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Laminar cracking in post-tensioned concrete nuclear containment buildings
… structure, the long-term integrity of post-tensioned concrete containment buildings (PCCs) is necessary for continued operation of the reactors they house. In 2009, during preparations for a steam generator replacement, extensive subsurface laminar cracking was identified in a portion …
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Time-Dependent Behavior of Noncomposite and Composite Post-Tensioned Concrete Girder Bridges
Made available in DSpace on 2014-12-13T19:31:34Z (GMT). No. of bitstreams: 1 7708986.pdf: 13239689 bytes, checksum: d8b3845b2959497ec2c2907215386015 (MD5) Previous issue date: 1976
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Linear and Nonlinear Finite Element Analyses of Anchorage Zones in Post-Tensioned Concrete Structures
Linear and nonlinear finite element analyses are used for the investigation of rectangular anchorage zones with the presence of a support reaction. The investigation is conducted based on four load configurations consisting of concentric, inclined concentric, eccentric, and inclined eccentric …
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Investigation of the Time-Dependent Longitudinal Flexural Behavior of the Varina-Enon Bridge
Post-tensioned concrete is a building technology which provides a compressive force to concrete via steel tendons. This combination of steel and concrete allows for the construction of lighter and stiffer structures. Post-tensioned concrete is widely utilized throughout the United States highway …
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Verificação no estadio I e II e na ruptura de seções em concreto protendido
… limit state and the ultimate fadigue state of a post-tensioned concrete section subjected to a bending moment and normal force. The program allows the analysis of sections for any age of the structure, as well as for applications of the prestressing operations and duct injections in various …
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Behavior of Post-Tensioning Systems Subjected to Inelastic Cyclic Loading
Post-tensioning (PT) strands have been employed in a number of self-centering seismic force resisting systems as part of the restoring force mechanism which virtually eliminates residual building drifts following seismic loading. As a result of the PT strands large elastic deformation capability, …
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Fibers and Fragments: Weaving local resources into the Arabian Gulf's modern material culture.
… that constitute a future construction practice: concrete in compression (mined from demolition sites) and carbon fibers in tension. The discovery of oil in 1932 accelerated the use of reinforced concrete in the Gulf, which was first spurred by British officials and economic agents in Bahrain. …
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Refined Evaluation of Effective Prestress in the Varina-Enon Bridge
The Varina-Enon Bridge is a cable-stayed, post-tensioned segmental box girder bridge in Richmond, Virginia. A large flexural crack was noted by inspectors in July 2012 which prompted a number of investigations into the current condition of the bridge. Particular focus has been put on prestress …
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Effective Prestress Evaluation of the Varina-Enon Bridge Using a Long-Term Monitoring System and Finite Element Model
… Bridge is a cable-stayed, precast, segmental, post-tensioned box girder bridge located in Richmond, Virginia. Inspectors noticed flexural cracking in July of 2012 that prompted concerns regarding long-term prestress losses in the structure. Prestress losses could impact the future performance, …
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Long-Term Monitoring and Evaluation of the Varina-Enon Bridge
… of the prestress losses is very important. In post-tensioned structures, the prestress losses due to creep and shrinkage can cause serviceability issues and can reduce flexural capacity. The Varina-Enon Bridge is a cable-stayed, precast, segmental, post-tensioned box girder bridge located in …
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Structural Condition Assessment Of Prestressed Concrete Transit Guideways
… is composed of six-span continuous prestressed concrete bridge segments. The overall transit system incorporates a number of continuous bridges which share common design details, geometries, and loading conditions. The original analysis is based on certain simplifying assumptions such as rigid …