【摘要】 鱼脊型水石分离结构是一种用于持续分离粗颗粒的新型泥石流防治结构,为确定实际应用中该结构的强度计算方法,理论分析发现:结构中引流坝的计算方法与传统重力拦砂坝类似,且泥石流荷载主要作用于水石分离格栅的肋梁上;通过简化肋梁的计算模型,将肋梁与脊梁连接处简化成铰结点,肋梁与基础之间的约束简化成铰支座,主要考虑泥石流重力、泥石流中石块冲击力及泥石流体动压力3种荷载作用,据此计算出3种荷载作用下肋梁任意截面的内力,最终建立肋梁强度验算公式,以此作为工程设计中选取水石分离格栅合理截面型式及尺寸的依据。更多还原

【Abstract】 A new herringbone water-sediment separation structure was designed to continuously separate coarse particle from debris flow. Calculation method of structural strength and stability should be determined before it used in debris flow mitigation. Theoretical analysis showed that the calculation methods of draining dyke is similar to that of traditional close-type dam,and debris flow force,which include debris flow gravity,impact force of rock blocks,debris flow dynamical pressure,mainly loaded on the ribbed beam of the herringbone water-sediment separation grid. By simplifying structural mechanical model,calculation formulas of the ribbed beam’s strength and stability were determined,which can be used to determine optimal sectional type and dimension of the grid.更多还原