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根据薄膜壳体的无矩特性,提出了分析不同注水时刻,膨润土膨胀施加给橡胶膜的膨胀力的算法。该方法从橡胶膜的膨胀位移分析橡胶膜膨胀内压应力入手,根据橡胶膜微元体三维弹性状态下的柱坐标形式的物理方程和几何方程,以及橡胶膜圆筒横截面处截面的内力平衡方程,推导了橡胶膜膨胀内压应力在不同时刻和不同位置处的计算公式。应用编制的HSSA-EXCEL程序,计算分析了在不同注水时刻,膨润土的膨胀所施加给橡胶膜的膨胀内压应力。计算结果表明:与注水端的位置较近处橡胶膜的膨胀内压应力较大;与注水端的位置较远处橡胶膜的膨胀内压应力较小。膨胀内压应力随着时间不断增长。
According to the momentless property of film shell, an algorithm for analyzing the swelling force of bentonite applied to the rubber film at different water injections was proposed. According to the physical and geometric equations of cylindrical coordinates in the three-dimensional elastic state of the rubber membrane and the internal force balance of the cross-section of the rubber cylinder, Equation, the formula for calculating the internal pressure stress of rubber diaphragm at different time and different positions is deduced. The developed HSSA-EXCEL program was used to calculate and analyze the internal pressure of expansion applied to the rubber membrane at different water injection times. The calculated results show that the inner pressure of the rubber diaphragm is larger than the position of the water inlet end, and the inner pressure of the rubber diaphragm is far from the position of the water inlet end. Expansion of internal stress increases with time.