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简要介绍了动态测试系统 ,对沪宁线车速 1 7～ 1 36 km/ h情况下客货车产生的路基动应力进行了测试分析 ,结果表明 ,随着列车速度的提高 ,路基动应力略有增加 ,为既有线路基在提速状态下的评估技术和标准提供了依据
The dynamic test system is briefly introduced. The dynamic stress of subgrade under passenger car and wagon vehicle under the speed of 17 ~ 136 km / h is tested and analyzed. The results show that as the train speed increases, the dynamic stress of subgrade is slightly increased , Provided the basis for the evaluation techniques and standards of the existing railway line under speed-up status