摘要
为了评价机械化路面器材对车辆安全通行的保障能力,根据箱式路面器材的结构和受力特点进行结构简化,探讨铰接箱式路面体系与土壤相互作用模型。在沉陷计算的基础上分析集中载荷和均布载荷条件下行驶阻力和挂钩牵引系数的计算公式,提出铰接箱式路面体系车辆通过性评判方法,分析了附着系数、地基参数、结构尺寸对路面器材车辆通过性的影响。
To predict the trafficability of pin-jointed box road equipments, the main structures of pin- jointed box road equipments and the corresponding terramechanics behavior were discussed. The equipments were simulated as pin-jointed rigid systems and the elastic foundation beam model was adopted to simulate the interaction mechanism between the structure and soil. Thus the sinkage influence line and the maximum sinkage under concentrated loading and distributed loading was calculated. The motion resistance due to the compaction of soils was estimated. The thrust of vehicles was decided by the adhesive coefficient between vehicles and metal plates that could be changed greatly if the road was sludgy. Then the drawbar-pull coefficients, varying deformation coefficients, adhesive coefficients and dimensions of road elements were discussed. It＇s concluded that the trafficability of pin-jointed box road equipments is well if the deformation coefficient is larger than 50 kN/m^3, the adhesive coefficient is larger than 0. 2 and the length of box elements is large than 2 m.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
2007年第2期26-29,共4页
Transactions of the Chinese Society for Agricultural Machinery
关键词
车辆通过性
箱式路面器材
沉陷
挂钩牵引系数
Trafficability, Box mechanized road equipments, Sinkage, Drawbar-pull coefficient
