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RISShear Strength of UHPFRC Beams: Mesoscale Fiber-Matrix Discrete Model
Publisher: American Society of Civil Engineers
Abstract: A theoretical method, termed the mesoscale fiber-matrix discrete model (MFDM), has been developed that can be used for estimating the shear contribution of steel fibers and calculating shear strength of ultrahigh-performance ...
Parametric Experimental Study of Ultra-Short Stud Connections for Lightweight Steel–UHPC Composite Bridges
Publisher: ASCE
Abstract: This paper reports on double shear push-out tests conducted on steel-to-ultra-high-performance concrete (UHPC) connections based on studs of 30- or 22-mm diameter in slabs of 35, 55, or 150 mm thickness. The results show ...
A Novel Shear Strength Prediction Approach for Headed Shear Studs Embedded in Ultrahigh-Performance Concrete
Publisher: ASCE
Abstract: Due to the excellent mechanical properties of ultrahigh-performance concrete (UHPC), the shear strength of stud–UHPC composite connections is significantly enhanced. Nevertheless, the underlying mechanism remains not fully ...
Effect of Steel-Fiber Shear Reinforcement on Postcracking Shear Fatigue Behavior of Nonstirrup UHPC Beams
Publisher: ASCE
Abstract: Steel fibers in ultra-high performance concrete (UHPC) have been demonstrated to improve resistance to crack growth, decrease deflection, and increase fatigue life under cyclic loads. Using steel fibers as shear reinforcements, ...
Flexural Performance of Ultrathin UHPC Slab–Steel Composite Beams with Ultrashort Stud Connections
Publisher: ASCE
Abstract: To optimally use the excellent mechanical properties of ultrahigh performance concrete (UHPC), this study experimentally investigated the flexural behavior of 10 lightweight steel-UHPC composite beams constructed using ...
Shear Strength of Dry Joints in Precast UHPC Segmental Bridges: Experimental and Theoretical Research
Publisher: American Society of Civil Engineers
Abstract: Precast segmental bridges made of ultrahigh-performance concrete (UHPC) have gained wide research attention and application. The shear transfer of dry joints between UHPC segments is one of the major concerns due to the ...
Lateral Behavior of Precast Segmental UHPC Bridge Columns Based on the Equivalent Plastic-Hinge Model
Publisher: American Society of Civil Engineers
Abstract: The concept of an equivalent plastic-hinge model was used to evaluate the lateral behavior of precast segmental ultra-high-performance concrete (UHPC) bridge columns. The columns consist of precast UHPC segments that were ...
Direct Shear Strength Prediction for Precast Concrete Joints Using the Machine Learning Method
Publisher: ASCE
Abstract: Precast segmental concrete beams (PSCBs) are being increasingly applied in bridges worldwide benefitting from the advantages of accelerated bridge construction. It is of importance to accurately predict the direct shear ...
Development and Performance of Innovative Steel Wedge Block–Crossed Inclined Stud–UHPC Connections for Composite Bridge
Publisher: ASCE
Abstract: This paper reports the shear performances of steel wedge block–crossed inclined stud–ultrahigh performance concrete (UHPC) connections for application to steel-concrete composite bridges. The study entailed 36 pushout tests ...