Design of steel beams cross three directions with sprengel
N.N. Demidov, National Research Moscow State Civil Engineering University, Moscow, Russia
presents one of the possible formulations and solutions of the
optimization problem of designing the cross-beams of the combined
system, reinforced bongs. The basis for efforts as functions of
variable parameters was a displacement method. Approximate analytical
depending forces and displacements in beams, and the puffs. Analytical
expressions possible to formulate the problem of how to design
optimization. The article points out that the problem was posed and
solved for a fixed geometry puffs and beams. This narrows the area of
optimal solutions, but greatly simplifies the solution itself. The
objective function – linear. Restrictions – nonlinear
functions, therefore considered the problem relates to the problems of
nonlinear programming. Optimum obtained in one of the points of
intersection of two active constraints – for tightening strength
and maximum permissible deflection of the structure. Because of this
discrete mathematical optimum mix does not coincide with the physical,
so the solution obtained approximately.
steel construction; cross beams with spatial tightening; terms beams
strength; terms strength puffs; deflection of the structure
Read the whole article in pdf
(Demidov N.N. Design of steel beams cross three directions
with sprengel. Magazine of Civil Engineering. 2017. No. 4. Pp.
46–53. doi: 10.18720/MCE.72.6.).