Abstract:The exterior tube structure exerts radial outward forces, and the diagrid columns have significant difference in axial force.Both result in large axial tension forces in ring beams.
[摘要]重力荷载作用下网筒结构外鼓及交叉柱间轴力差异将

受到较大的拉力。
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生英语 2018年9月合集
系列
人-财经 

:物理
) However, if the cable broke — releasing its tension — springs behind the levers would force them outwards into grooves in the elevator rails, those rails were then forced against the shaft walls, quickly arresting any cars fall.
然而,如果缆绳断裂——释放拉力——杠杆后面的弹簧就会迫使杠杆向外进入电梯轨道的凹槽,然后这些轨道就会
压在井壁上,迅速阻止任何坠落的电梯轿厢。