Key points for calculation of steel structural members or connections
2020-05-10 21:43:40
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hen calculating structural members or connections, the specified strength design value shall be multiplied by the corresponding reduction coefficient.
1 Single angle steel with single connection:
1) The strength and connection are calculated by axial force multiplied by a coefficient of 0.85;
2) Calculated stability by axial compression:
Equidistant steel multiplied by coefficient 0.6+0.0015λ, but not greater than 1.0;
The unequal edge angle steel connected by short edges is multiplied by a coefficient of 0.5+0.0025λ, but not greater than 1.0;
The unequal edge angle steel connected by long edges multiplied by the coefficient of 0.70;
The λ is aspect ratio, for the unconnected single angle steel bar, should be calculated according to the minimum radius of rotation, when λ<20, take λ=20;
2 Unpadded single side welding butt weld multiplied by coefficient 0.85;
3. High-altitude installation weld and rivet connections with poor construction conditions multiplied by a coefficient of 0.90;
4 Sink and semi-sink rivet connections multiplied by coefficient 0.80.
Note: When several cases exist simultaneously, the reduction coefficient should be multiplied by one.
