In the performance analysis of existing buildings, the fracture type of concrete elements is classified as ductile if bending and as brittle if shear. While controlling the ductility of concrete elements in linear performance analysis, it is classified as brittle if the shear force value taken as the basis is greater than the shear strength, and as ductile if the shear force value is less than the shear strength.
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ICONS
ECO = Impact / Capacity ratio
R a = Earthquake Load Reduction Coefficient
β v = Shear force dynamic magnification coefficient at the curtain
f ck = Concrete characteristic cylinder compressive strength
V e = Design shear force based on column, beam and curtain
V arm leg = Above the node point and The smaller of the column shear forces calculated according to Section 4 under
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15.5.2.5 - In reinforced concrete column-beam joints , the shear forces acting on the joint for all boundary situations and calculated from Equation (7.11) should not exceed the shear strength given in 7.5.2.2 . However, Eq. (7.11) from V arms leg instead 7.3.7 according calculated without concern to hardening V e to be used, Equation (7.12) or Eq. (7.13) 'is wherein the strength calculations f ck instead of 2.15Current concrete strength determined according to the knowledge level defined in. If the joint shear demand exceeds the shear strength, the column-beam junction area will be defined as a brittle damaged element.
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