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使用临时性架空索道集运木材时,树木有可能落到承载索上。目前,对该情况下产生的动态力研究得很少,尚不能确定在该力的突然作用下钢索拉力的动荷系数,也从未考虑过两端支点的可挠性。本文列举了树木落在承载索上产生力的研究结果。设冲击力P作用于承载索产生的挠度等于该力静态作用于承载索产生的挠度;设计集运材架空索道时可忽略钢索的阻力和内摩擦力,但必须知道最大动态力。
When using temporary ropeways to collect timber, the trees may fall onto the load line. At present, the dynamic force generated in this case is rarely studied. The dynamic coefficient of cable pull force under the abrupt action of this force has not yet been determined, and the flexibility of the fulcrum at both ends has never been considered. This article lists the results of research on the forces that plants fall on the load-bearing cables. Assuming that the deflection caused by the impact force P on the load cable is equal to the deflection caused by the force acting on the load cable statically, the resistance and internal friction force of the cable can be neglected when designing the overhead cableway for the material carrier. However, the maximum dynamic force must be known.