大风条件下货车篷布和绳网试验分析

在南疆线前百公里风区和兰新线百里风区,进行了3次大风条件下的货车篷布、篷布绳索和绳网试验。试验结果表明:D型篷布主要技术指标优于X型篷布;篷布的强度指标能够满足大风条件下的运输安全要求;挡风墙和防风网可以有效降低篷布绳索受到的气动力;最大平均风速达到32 m/s以上时,篷布、篷布绳索和绳网均出现损坏,影响运输安全;篷布绳网可以有效降低篷布绳索气动力;弹力绳可以有效解决货物沉降造成的篷布松懈问题。

Test Analysis of Freight Cars Tarpaulin and Rope Network under Strong Wind

This paper introduces the three times freight car tarpaulin and rope network test under strong wind in the area of hundred-mile wind area of South Xinjiang Line and Lanzhou-Xinjiang Line.The test result shows the main technical indices of D type tarpaulin are excelled to that of X type tarpaulin;the intensity index of the tarpaulin could satisfy the requirement of traffic safety under strong wind;the wind-break wall and wind-break network could effectively reduce the aerodynamic force on tarpaulin rope;when the maximum average wind speed above 32 m/s,the tarpaulin rope and rope network will be all damaged and influence the traffic safety;the tarpaulin rope network could effectively reduce the aerodynamic force of tarpaulin rope;and the elastic ropes could resolve the problem of tarpaulin loosening produced by goods settlement.