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RISSimplified Analytical Approach for Calculating the Transverse Load Distribution of Precast Slab Bridges with and without Concrete Overlays
Publisher: American Society of Civil Engineers
Abstract: Precast slab bridges are an attractive option for short- to medium-span bridges; however, the presence of longitudinal joints and concrete overlays adds great complexity to the transverse load distribution (TLD) analysis. ...
Investigation of Bursting Forces in Anchorage Zones: Compression-Dispersion Models and Unified Design Equation
Publisher: American Society of Civil Engineers
Abstract: Anchorage zones of posttensioned structures are prone to splitting cracks, necessitating rational reinforcement design methods for anticracking in such regions. This paper presents a generalized method to calculate bursting ...
Transverse Bursting Stresses due to Horizontally Curved Tendons in the Top Slab of Box Girders
Publisher: American Society of Civil Engineers
Stresses in External and Internal Unbonded Tendons: Unified Methodology and Design Equations
Publisher: American Society of Civil Engineers
Abstract: A unified methodology is proposed to compute the tendon stresses in externally prestressed beams in elastic and ultimate states, and practical design equations are developed to predict the ultimate tendon stresses. Previous ...
Crack Propagation and Control in Concentric Posttensioned Anchorage Zones
Publisher: American Society of Civil Engineers
Abstract: In past decades, significant progress has been made in prediction of the behavior of posttensioned anchorage zones. An aspect that has not been sufficiently cleared up yet, however, is the service behavior of posttensioned ...
Elastic-to-Plastic Strut-and-Tie Model for Concentric Anchorage Zones
Publisher: American Society of Civil Engineers
Abstract: The strut-and-tie model (STM) has been adopted as a preferred methodology for the design of disturbed regions; however, an aspect that has not yet been sufficiently cleared up is the service behavior of structural concrete ...
Analytical Pushover Method and Hysteretic Modeling of Precast Segmental Bridge Piers with High-Strength Bars Based on Cyclic Loading Test
Publisher: American Society of Civil Engineers
Abstract: Compared to cast-in-place bridge piers, precast piers can accelerate bridge construction, but their use in seismic systems is challenging. High-strength bars (≥500 MPa) incorporated with precast piers can further expedite ...
Transverse Post-Tensioning in Long-Span Concrete Box-Girder Bridges: Refined Modeling and Alternative System
Publisher: ASCE
Abstract: Transverse post-tensioning is commonly introduced in top slabs of concrete box girders to control transverse tensile stresses induced by dead and live wheel loads. However, longitudinal cracks with a definite pattern have ...
Joint Distribution of Wind Speed, Wind Direction, and Air Temperature Actions on Long-Span Bridges Derived via Trivariate Metaelliptical and Plackett Copulas
Publisher: ASCE
Abstract: Comprehensive bridge design should consider simultaneous actions of wind and temperature. The current load combination method of directly superposing extreme wind and temperature actions ignores the correlation between ...
Bond Behaviors between UHPC and Normal-Strength Concrete: Experimental Investigation and Database Construction
Publisher: ASCE
Abstract: This study builds a large database from an extensive survey of existing bond strengths between ultrahigh-performance concrete (UHPC) and normal-strength concrete (NC), with total 563 specimens being collected. To make up ...