scholarly journals A mechanical model for failures in shear of members without transverse reinforcement based on development of a critical shear crack

2018 ◽  
Vol 157 ◽  
pp. 300-315 ◽  
Author(s):  
Francesco Cavagnis ◽  
Miguel Fernández Ruiz ◽  
Aurelio Muttoni
Keyword(s):  
Mechanical Model ◽  
Shear Crack ◽  
Transverse Reinforcement

Design of Semilightweight Bridge Girders: Development-Length Considerations

2000 ◽  
Vol 1696 (1) ◽  
pp. 41-47 ◽  
Author(s):  
Robert J. Peterman ◽  
Julio A. Ramirez ◽  
Jan Olek
Keyword(s):  
Shear Crack ◽  
Point Load ◽  
Critical Section ◽  
Tension Force ◽  
Transverse Reinforcement ◽  
Development Length ◽  
Bond Failure ◽  
Moment Capacity ◽  
Maximum Moment ◽  
Prestressed Reinforcement

In a recent study, 25 development-length tests were conducted on rectangular and T-shaped semilightweight beams having design compressive strengths of 48 MPa (7,000 psi) and 69 MPa (10,000 psi). In the rectangular beam tests, the design moment capacity was exceeded in every case. However, in the tests on T-shaped beams, bond failure occurred in some specimens immediately after the formation of a flexure-shear crack. Additional tests were then conducted on similar T-shaped beams having varying amounts of transverse reinforcement near the point load. These tests showed that bond failure could be prevented by increasing the transverse reinforcement near the point of maximum moment. The study showed that the shift in the tension force that occurs when flexural cracks turn diagonally may lead to bond failure if sufficient anchorage of the strand is not provided. Therefore, the investigators recommend that the current AASHTO requirements for strand development be enforced at a “critical section” located at a distance dp from the point of maximum moment toward the free end of the strand, where dp is the distance from the extreme compression fiber to the centroid of the prestressed reinforcement.

Shear Strength of Members without Transverse Reinforcement Based on Development of Critical Shear Crack

2020 ◽  
Vol 117 (1) ◽  
Author(s):  
Francesco Cavagnis ◽  
João T. Simões ◽  
Miguel Fernández Ruiz ◽  
Aurelio Muttoni
Keyword(s):  
Shear Strength ◽  
Shear Crack ◽  
Transverse Reinforcement

scholarly journals Mechanical Model for Drift-Induced Punching of Slab-Column Connections without Transverse Reinforcement

2018 ◽  
Vol 115 (2) ◽  
Author(s):  
Ioannis-Sokratis Drakatos ◽  
Aurelio Muttoni ◽  
Katrin Beyer
Keyword(s):  
Mechanical Model ◽  
Transverse Reinforcement
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