2012-10-02 Turorial on Response 2000 Metric

2012-10-02 Turorial on Response 2000 Metric -...

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Example: Use of Response 2000 (R2K) to Calculate Sectional Response Characteristics Problems to be Solved Using R2K: For the 300 × 600 mm section, obtain the following using program R2K (Search for “Response 2000” on Google.com to download) 1. M cr and φ cr of the gross section (easier to do this by hand using geometric properties calculated by R2K) 2. M cr and φ cr of the transformed section with three 20 mm diameter bars at 65 mm from bottom of section 3. M y and φ y of this section with these three 20 mm diameter bars 4. M n and φ n of this section with these three 20 mm diameter bars 5. The Effect of Axial Compression on Moment Curvature Response 6. A s,min of this section so that the section so that M y > M cr 7. M y and φ y of this section but with five 32 mm diameter (Area = 804 mm 2 ) bars 8. Determine A s,max (Amount of Reinforcement for which first yield occurs when top strain = 0.003) 9. Effect of Adding Compression Reinforcement on Moment Curvature Response 10. Axial Load – Moment Interaction Diagram 11. Effect of Adding a Top Flange Problem 1: Determine M cr and φ cr of the gross section (i) Options Preferences SI Metric (ii) To define the concrete section: Define Concrete Section Rectangle Section (input b = 300, & h = 600) Select OK (iii) To define the concrete and reinforcement material properties Define Material Properties Concrete Detailed f’c (input “cylinder strength = 35 MPa”, “tension strength = 3.5 MPa”, make “Tension Stiffening Factor = 0”, Select Base Curve = Parabola or Popovics, “Peak Strain = 0.002”Select Modify or Add and then OK)
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2012-10-02 Turorial on Response 2000 Metric -...

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