【摘要】 鉴于坝高、内压比是橡胶坝最重要的参数,考虑材料非线性和几何非线性,基于Mooney-Rivlin模型,建立了不同坝高、内压比的橡胶坝有限元模型,计算其应力和位移,分析了坝高、内压比对橡胶坝工作性态的影响。结果表明,在设计工况下,坝体最大应力位于坝袋与底板锚固处,最大位移位于坝顶偏下游侧;坝高越高、内压比越大,坝体最大有效应力及最大位移也越大。可见在满足需要的情况下,应选择较小的内压比及较低的坝高。更多还原

【Abstract】 Height and internal pressure ratio are the most important parameters of the rubber dam.Considering material nonlinearity and geometrical nonlinearity,based on Mooney-Rivlin model,the finite element model is established for different heights and internal pressures of rubber dam,and the stress and displacement are calculated.Then the influence of height and internal pressure ratio on the working state of rubber dam is analyzed.The results show that under the design conditions,the maximum stress of the dam is at the anchoring of the bag and the bottom,and the maximal displacement is located at the downstream of the dam crest slant side;the greater the height and the ratio are,the greater the maximum effective stress and the maximum displacement are.Therefore,to satisfy the need,it is best to choose smaller inner pressure ratio and smaller height of the rubber dam.更多还原