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为了对船闸的人字闸门门扇背拉杆施加予应力,以增加门扇的抗扭能力,从而避免运转时门扇产生过度的扭曲变形造成损害,影响通航。在设计予应力背拉杆时,需要提供无背拉杆门扇的抗扭弹性常数。但在我国目前已有的以及今后还将兴建的具有闭合边柱的人字闸门,则还缺少该项计算表达式,经分析后,本文推导了具有闭合边柱的人字闸门无背拉杆门扇的抗扭弹性常数(即门扇的整体刚度)的计算式Q_0=8K_1GA_0~2/L∑-(S_i/t_i)并经试验证实,可供采用。
In order to apply prestress to the back lever of the gate of the lock gate of the ship lock to increase the torsional resistance of the door leaf so as to avoid excessive twisting deformation of the door leaf during operation and cause damage and affect navigation. When designing a prestressed tie rod, it is necessary to provide the torsion spring constant of the backless tie leaf. However, in China’s current and future will be built with closed side columns of the word gate, the lack of the calculation of the expression, after analysis, this article has deduced the closed side column with herringbone non-backswing door leaf The formula for the torsional elastic constant (ie, the overall stiffness of the door leaf) is calculated using the formula Q_0=8K_1GA_0~2/L∑-(S_i/t_i) and confirmed experimentally to be applicable.