Method for setting longitudinal stiffening rib of high web of elastic rotation constrained boundary steel-concrete composite beam
A technology of rotational restraint and stiffeners, applied in bridge construction, bridges, bridge materials, etc., can solve the problems of high web stiffening design influence, high web error, etc.
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[0074] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the present invention is not limited.
[0075] A method for setting longitudinal stiffeners of steel-concrete composite beams with high webs bounded by elastic rotation constraints. Firstly, the displacement function equation and boundary conditions with elastic rotation constraints are established, and the stiffening under two states of rigid stiffening and flexible stiffening is derived based on the energy method. The formula for calculating the buckling stress of ribs is obtained to obtain the formula for calculating the critical stiffness of longitudinal stiffeners bounded by elastic rotation constraints; then, considering the principle of external force work and minimum potential energy, a formula for calculating the critical buckling stress of non-uniform compression plates under elastic rotation constraints is proposed; Finally, according to the...
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