Structural design knowledge: the use of steel frame buildings - support structure requirements?
Steel frame houses using - support structure requirements?
A support frame in the arrangement of the two directions are advised fundamental symmetry between floor support frame aspect ratio of not more than three.
Two three, four and not more than 50m in height should adopt steel center support, may also have eccentric bracing, buckling restrained braces and other energy dissipation.
3 center support frame cross bracing should be adopted, the word can also be used to support or monoclinic rod support, should not be used K-shaped support; support should meet at the intersection of the axis of the beam-column members axis, eccentric deviation from the intersection when the support should not exceed the width of the rod, and should be included in the resulting additional moment. When using only the central support of the tension rod monoclinic system, should also be set in different tilt directions of two diagonals, and each group in different directions monoclinic rod cross-sectional area difference between the area of the projection in the horizontal direction is not greater than 10%.
Each supporting four eccentrically braced frames should have at least one end connected to the frame beam and the intersection between the supporting beams and columns with the same cross between or within other support to form the beam energy dissipation beam segment intersections.
5 When using the buckling restrained braces, the word should be used to support, arranged in pairs monoclinic rod support and other forms should not be used in the angle between the K-shaped or X-shaped should support and column 35 ° ~ 55 °. When the buckling restrained braces compression, its design parameters, performance testing and calculation methods as the two parts of energy dissipation requirements can design.
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