一、前言 本文通过分析弧形闸门的受力状况应用理论力学的方法,研究和探讨了弧门启闭力的计算理论,建立了新的计算方法。该方法首先研究弧形闸门的实际作用荷载,建立力系的平衡方程式,并把解算过程简化和归结为解如下的一元二次正弦函数方程式: Sin~2β-MSinβ+N=0式中β为支铰反力对水平面的倾角,M、N为仅与力系中已知力有关的系数。以下本文将阐明这一计算方法的推演过程并提供必要的解题步骤,以供设计参考。 二、弧形闸门的启门力计算 I. INTRODUCTION In this paper, by applying the method of theoretical mechanics to analyze the force situation of arc gate, the calculation theory of arc gate opening and closing force is studied and discussed, and a new calculation method is established. The method firstly studies the actual acting load of the arc gate, establishes the equilibrium equation of the force system, and simplifies and solves the solving process as follows: Sol ~ 2β-MSinβ + N = 0 β For the hinge reaction force on the horizontal plane tilt, M, N is only known force in the force system-related coefficients. Following this article will illustrate the process of deduction of this calculation method and provide the necessary steps to solve the problem, for the design of reference. Second, the arc gate opening force calculation