介绍了U型钢可缩性支架缩动后的内力计算方法。
This paper gives the method of internal force calculation of U steel supports.
本文给出了U型钢可缩性支架的缩动条件，讨论了卡缆预紧力对支架抗缩动能力的影响以及支架在缩动过程中抗缩动能力的变化等问题。
The paper gives yielding conditions and discusses the influence of pre-tension of clamps on yieldable capacity of the U-steel and change of yieldable capacity in the process of yielding.
型钢可缩性支架的缩动与否，取决于支架卡缆预紧力及搭接部分两端的内力。
Whether an u-steel yielding support could yield depend on the pre-screw forces of the camps and the internal forces of both ends at the u-steel overlap parts.
永久磁铁和动触头固定在摆动板上，摆动板可偏转，顶端通过弹簧吊置在线圈支架上。
A permanent magnet and a moving contact are fixed on a swing plate which can deflect, and the top end of the swing plate is hung on a coil brace through a spring.
缩动是U型钢可缩性支架的重要特性 ，按支架缩动后进行强度计算是必要的。
Yielding is an important characteristic of U steel supports. It is necessary to consider the internal force caused by the yielding of the U steel supports in the strength calculation.
缩动是U型钢可缩性支架的重要特性 ，按支架缩动后进行强度计算是必要的。
Yielding is an important characteristic of U steel supports. It is necessary to consider the internal force caused by the yielding of the U steel supports in the strength calculation.
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