The relation between stress and strain of upper or lower flange is linear.
上下翼缘应力与应变关系均为直线。
The bottom plating is a principal longitudinal member providing the lower flange of hull girder.
船底板构成船体梁的下翼缘板，是主要的纵向构件。
This paper researches the plane stiffness of new composite structure for slab on the lower flange, which is compared with the traditional structure for the slab on the top flange.
本文研究了将楼板置于钢梁下翼缘的新型组合结构平面刚度，并和传统的将楼板置于钢梁上翼缘的结构形式的平面刚度和极限承载力作了比较。
Tests show that the cross section of the whole deck, working jointly as the lower flange of the main girder, should be taken for the calculated section subjected to longitudinal prestressing force.
试验证明，在纵向预应力作用下的计算截面应取道床板全部截面作为主梁下翼缘共同工作。
Tests show that the cross section of the whole deck, working jointly as the lower flange of the main girder, should be taken for the calculated section subjected to longitudinal prestressing force.
试验证明，在纵向预应力作用下的计算截面应取道床板全部截面作为主梁下翼缘共同工作。
应用推荐