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(四)计算横梁内力的简化方法根据FGS—2—30筛框各构件的力学性质,及上面分析的结果可以看出:若只须计算横梁内力,并不一定须要解超静定结构。可按单梁计算,这样既简便,误差也不大。 1)横梁2、3、……9在xoy平面内的弯曲变形,可以简化为两端固定的单梁。因为横梁2—12的弯曲劲度i_(2,12)~2≈50吨米;两侧板1—2、2—3的弯曲劲度i_(1,2)~2≈i_(2,3)~2≈500吨米,要比单梁2—12的弯曲劲度
(D) a simplified method of calculating the internal force beam According to the mechanical properties of the FGS-2-30 screen frame components, and the above analysis results can be seen: If only to calculate the beam internal force, does not necessarily need to solve the statically indeterminate structure. According to the single beam calculation, this is easy, the error is not large. 1) Beams 2, 3, ... 9 Bending deformation in the xoy plane can be simplified to a single beam fixed at both ends. Because the bending stiffness of the beam 2-12 i_ (2,12) ~ 2 ≈ 50 tons of meters; bending stiffness i_ (1,2) ~ 2 ≈ i_ (2,3 ) ~ 2 ≈ 500 tons of rice, bending stiffness than single beam 2-12