1．Beijing Zhongluan Traffic Technology Co.,Ltd，Beijing 100070，China;
2.School of Civil Engineering and Transportation of South China University of Technology
Abstract：To make up for the shorten length of some truck escape ramp, net energy absorption system used on truck escape ramp was put forward, the system feasibility were proved by low velocity test, the weaken part of the system were found out by high velocity test, FEA models were built to do factor influence analysis on weaken part and the optimization structure were brought out and the function of it was proved by two vehicle running tests. It is pointed that damping force can be put out by net energy system, the occupant safety can be guaranteed within 25kN damping force, the damping force and vehicle quality is less effective on peak force of rod tension, the rod can be effectively guaranteed not broken by controlled the diameter of rod roller within 400mm, the quality of rod roller within 130kg, and set the protective net at 30m station rear to the entrance of truck escape ramp, the gradient of 9.29 truck escape ramp installed stirring type damper net energy absorption system can stop 55T truck with 104km/h speed in 66.2m, installed brake broken damper net energy absorption system can stop 55T truck with 101km/h speed in 62.5m. The results indicate that, net energy absorption system with reasonable designation and correct setting can be an effective facility to stop brake failure vehicle.
闫书明1，方磊2，马亮1，荆坤1. 避险车道网索吸能系统[J]. 振动与冲击, 2015, 34(17): 30-37.
YAN Shu-ming1，FANG Lei2，MA Liang1,JIN Kun1. Net energy absorption system on truck escape ramp. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(17): 30-37.
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