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随深孔弧形闸门孔口尺寸的加大及设计水头的增高,对止水的要求也不断提高。为了解决止水问题,近年来国内外有些工程已经采用偏心铰弧形闸门和变形止水(也称伸缩止水),但至今尚未见到变形止水的完整计算方法。笔者根据变形止水的形状提出了计算变形和弹性反力的方法,并做了例题。计算公式虽是近似的,但有助于设计者作出判断。由于变形止水型式很多,本文以图1型式为代表,进行研究。
With the deep-hole radial gate orifice size increases and the design of the head increases, the requirements of stop water also continue to increase. In order to solve the problem of water stop, some projects at home and abroad in recent years have adopted eccentric hinge arc gate and deformation stop water (also known as telescopic water stop), but so far have not yet seen a complete calculation method of deformation water stop. According to the shape of deformation, the author put forward a method to calculate the deformation and elastic reaction force, and made an example. Although the formula is approximate, but it helps designers to make judgments. As the deformation of a large number of water stop, this paper in Figure 1 as the representative of the study.