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RISReliability of Structural Steel Haunch Connections for Prestressed Concrete
Publisher: American Society of Civil Engineers
Abstract: This paper discusses a procedure to calculate current levels of reliability of prestressed concrete connections. The procedure is then utilized to determine the reliability of structural steel haunch connections used in ...
Considerations for Design Criteria for Lunar Structures
Publisher: American Society of Civil Engineers
Abstract: The development of design criteria for lunar structures must begin soon in order to establish adequate criteria. Some of the items that need consideration in such criteria are discussed. The categorization of the structures ...
Evaluation of Transverse Tie Rods in a 50-Year-Old Adjacent Prestressed Concrete Box Beam Bridge
Publisher: American Society of Civil Engineers
Abstract: Adjacent prestressed concrete box beam bridges are one of the most popular bridges in the United States for short to medium spans. Recently, there has been concern about the structural capacity of these bridges as they age ...
Early-Age Behavior of an Adjacent Prestressed Concrete Box-Beam Bridge Containing UHPC Shear Keys with Transverse Dowels
Publisher: American Society of Civil Engineers
Abstract: Adjacent precast prestressed concrete box-beam bridges have been used in the United States for many years and have performed well. However, the shear keys between adjacent box beams are susceptible to cracking, which can ...
Thermally Induced Behavior of Paired Internally Cured Concrete and Conventional Concrete Decks in Composite Bridges
Publisher: ASCE
Abstract: Many states have problems with transverse cracking of the concrete bridge decks. These cracks occur in negative and positive moment regions and can affect the serviceability of the decks. To improve the deck durability, ...
Interfacial Properties of Ultrahigh-Performance Concrete and High-Strength Concrete Bridge Connections
Publisher: American Society of Civil Engineers
Live-Load Moment-Distribution Factors for an Adjacent Precast Prestressed Concrete Box Beam Bridge with Reinforced UHPC Shear Key Connections
Publisher: American Society of Civil Engineers
Abstract: In this study, the live-load moment-distribution factors (LLMDFs) were evaluated for an adjacent precast prestressed concrete box beam bridge. The bridge used a new shear key configuration, which was grouted with ultrahigh ...
Modeling the Shear Connection in Adjacent Box-Beam Bridges with Ultrahigh-Performance Concrete Joints. I: Model Calibration and Validation
Publisher: American Society of Civil Engineers
Abstract: Recent research on ultrahigh-performance concrete (UHPC) for connection elements in highway bridges indicates an improvement in the performance of the overall bridge superstructure. However, there is limited information ...
Laboratory Evaluation of Ultrahigh-Performance Concrete Shear Key for Prestressed Adjacent Precast Concrete Box Girder Bridges
Publisher: American Society of Civil Engineers
Abstract: Precast adjacent box girder bridges have become a preferred solution in several states due to their simple structure, economy, and ease of construction. However, longitudinal cracks often appear along the shear keys between ...
Early-Age Behavior of Internally Cured Concrete Bridge Deck under Environmental Loading
Publisher: ASCE
Abstract: The early-age cracking of bridge decks is a typical issue in the US that reduces service life. Internally cured (IC) concrete has been used in some states to reduce or eliminate the development of cracks in reinforced ...