Previous and current limitations and material models [6]

Contexts in source publication

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... Terms: High-strength reinforcing steel; High-strength concrete, Fiber reinforced concrete; Flexural strength; Cracking behavior, Non-linear finite element Failure mode of S80-NS, S80-SF and S80-SYF specimens after 5 % in the load Figure 29: Experimentally measured and analytically predicted (based on Frosch equation) crack width versus longitudinal bar stress responses for S50-(NS, SF and SYF) and S80-(NS, SF and SYF) ................................................................................ 64 Figure 30: Crushing and cracking of concrete surrounding the rebar at the surface ... 65 Figure 31: Section strain distributions for NS specimens at ultimate load .................. 67 Figure 32: Section strain distributions based on different approaches for SF and SYF specimens at ultimate load ... Figure 35: Comparison between experimentally and analytically (FE) generated load versus mid-span deflection responses for: S50-NS; S80-NS; D50-NS; and D80-NS . 72 Figure 36: Comparison between the analytically (FE) developed and experimentally observed crack patterns for S50-NS specimen ............................................................ 73 Figure 37: load versus mid-span deflection responses when varying the reinforcement ratio for: (a) S50-NS; and Figure 57: Crack width-load responses for D50-(NS, SF, and SYF)-1; and D80-(NS, SF, and SYF)-1 .. Figure 58: Crack width-stress in longitudinal reinforcement responses for D50-(NS, SF, and SYF)-1; and D80-(NS, SF, and SYF)-1.......................................................... 92 Figure 59: Load versus slip responses for the three HSS bars embedded in: 50-NS, 80-NS; 50-SF; 80-SF; 50-SYF; and 80-SYFpulltout blocks .......................................... factor relating depth of equivalent rectangular compressive stress block to neutral axis depth Chapter 1: Introduction As technology advances, reinforcing steel bars made of new steel grades are being introduced to the construction industry. ...

Context 2

... Terms: High-strength reinforcing steel; High-strength concrete, Fiber reinforced concrete; Flexural strength; Cracking behavior, Non-linear finite element Failure mode of S80-NS, S80-SF and S80-SYF specimens after 5 % in the load Figure 29: Experimentally measured and analytically predicted (based on Frosch equation) crack width versus longitudinal bar stress responses for S50-(NS, SF and SYF) and S80-(NS, SF and SYF) ................................................................................ 64 Figure 30: Crushing and cracking of concrete surrounding the rebar at the surface ... 65 Figure 31: Section strain distributions for NS specimens at ultimate load .................. 67 Figure 32: Section strain distributions based on different approaches for SF and SYF specimens at ultimate load ... Figure 35: Comparison between experimentally and analytically (FE) generated load versus mid-span deflection responses for: S50-NS; S80-NS; D50-NS; and D80-NS . 72 Figure 36: Comparison between the analytically (FE) developed and experimentally observed crack patterns for S50-NS specimen ............................................................ 73 Figure 37: load versus mid-span deflection responses when varying the reinforcement ratio for: (a) S50-NS; and Figure 57: Crack width-load responses for D50-(NS, SF, and SYF)-1; and D80-(NS, SF, and SYF)-1 .. Figure 58: Crack width-stress in longitudinal reinforcement responses for D50-(NS, SF, and SYF)-1; and D80-(NS, SF, and SYF)-1.......................................................... 92 Figure 59: Load versus slip responses for the three HSS bars embedded in: 50-NS, 80-NS; 50-SF; 80-SF; 50-SYF; and 80-SYFpulltout blocks .......................................... factor relating depth of equivalent rectangular compressive stress block to neutral axis depth Chapter 1: Introduction As technology advances, reinforcing steel bars made of new steel grades are being introduced to the construction industry. High-strength steel (HSS) which is characterized by a yield strength of 689 MPa is expected to be one of the promising alternatives to the commonly used mild steel, particularly in heavily reinforced members. ...

Context 3

... Terms: High-strength reinforcing steel; High-strength concrete, Fiber reinforced concrete; Flexural strength; Cracking behavior, Non-linear finite element Failure mode of S80-NS, S80-SF and S80-SYF specimens after 5 % in the load Figure 29: Experimentally measured and analytically predicted (based on Frosch equation) crack width versus longitudinal bar stress responses for S50-(NS, SF and SYF) and S80-(NS, SF and SYF) ................................................................................ 64 Figure 30: Crushing and cracking of concrete surrounding the rebar at the surface ... 65 Figure 31: Section strain distributions for NS specimens at ultimate load .................. 67 Figure 32: Section strain distributions based on different approaches for SF and SYF specimens at ultimate load ... Figure 35: Comparison between experimentally and analytically (FE) generated load versus mid-span deflection responses for: S50-NS; S80-NS; D50-NS; and D80-NS . 72 Figure 36: Comparison between the analytically (FE) developed and experimentally observed crack patterns for S50-NS specimen ............................................................ 73 Figure 37: load versus mid-span deflection responses when varying the reinforcement ratio for: (a) S50-NS; and Figure 57: Crack width-load responses for D50-(NS, SF, and SYF)-1; and D80-(NS, SF, and SYF)-1 .. Figure 58: Crack width-stress in longitudinal reinforcement responses for D50-(NS, SF, and SYF)-1; and D80-(NS, SF, and SYF)-1.......................................................... 92 Figure 59: Load versus slip responses for the three HSS bars embedded in: 50-NS, 80-NS; 50-SF; 80-SF; 50-SYF; and 80-SYFpulltout blocks .......................................... factor relating depth of equivalent rectangular compressive stress block to neutral axis depth Chapter 1: Introduction As technology advances, reinforcing steel bars made of new steel grades are being introduced to the construction industry. High-strength steel (HSS) which is characterized by a yield strength of 689 MPa is expected to be one of the promising alternatives to the commonly used mild steel, particularly in heavily reinforced members. ...

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... 3D solid element has 3 degrees of freedom per node. The longitudinal HSS bars and the stirrups geometries were modeled using 2-node truss elements, as shown in Figure 33. ...

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... in order to take the advantage of symmetry and reduce the computational time, only one half of the beam was modeled, as shown in Figure 34. The FE results were initially verified with the experimental results for the four beams considered. ...

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... FE model was also able to capture the crack distribution observed during the experiments for each of the modeled beams. Figure 36 shows a sample of the captured crack distribution in D50-NS beam based on the FE model, along with the experimentally observed crack distribution for the same specimen. ...