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SB001 BASE STORY PMM ratio not providedsatisfied.

In steel element design, the design ratio under the influence of combined axial force and biaxial bending (PMM ratio) is made in accordance with the Design, Calculation and Construction Principles of Steel Structures (GKT and by the CYTHYE 2016 (GKT & YDKT), AISC 360-16 (ASD and & LRFD) or EN 1993-1-1 regulations. . According to the Design, Calculation and Construction Principles of Steel Structures (GKT and YDKT), the calculation of AISC 360-16, axial force and biaxial bending interaction equations is stated are calculated below.

Mathinline
body--uriencoded--$$ \normalsize (a) \; \; \dfrac%7BP_r%7D%7BP_c%7D \ge 0.2 \; \; \; \; \; \; \; \; \dfrac%7BP_r%7D%7BP_c%7D + \dfrac%7B8%7D%7B9%7D \bigg( \dfrac%7BM_%7Brx%7D%7D%7BM_%7Bcx%7D%7D + \dfrac%7BM_%7Bry%7D%7D%7BM_%7Bcy%7D%7D \bigg) \le 1.00 $$

Mathinline
body--uriencoded--$$ \normalsize (b) \; \; \dfrac%7BP_r%7D%7BP_c%7D < 0.2 \; \; \; \; \; \; \; \; \dfrac%7BP_r%7D%7B2P_c%7D + \bigg( \dfrac%7BM_%7Brx%7D%7D%7BM_%7Bcx%7D%7D + \dfrac%7BM_%7Bry%7D%7D%7BM_%7Bcy%7D%7D \bigg) \le 1.00 $$

  • The PMM ratio value must should be less than 1,00.

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Solutions:

  • The bending capacity flexural design strength of the secondary beam section can be increased by defining composite flooringbeam on the secondary beams. In this way, a composite beam design is made for the secondary beams. This title can be examined for the warning that composite beam strength is not provided.

  • The effects of incoming loads Secondary beam spacing can be reduced by reducing secondary beam distances.

  • Sub-beam Steel element cross-section size can be increasedenlarged.

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Secondary steel beam shear strength not satisfied.failure

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