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Test Study on Speed-dynamic Characteristic of reinforced roadbed at bridge approach

机译:桥梁钢筋法速度特性的试验研究

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Through dynamic test system, the speed-dynamic characteristic of a bridge-approach roadbed is studied in field test of a high speed railway, the dynamic stress influence characteristic of seamless track bridge-approach roadbed in line and depth is obtained under train's running speed; at the same time, the conception of speed power coefficient is presented, and the speed power coefficient of bridge-approach roadbed is lesser than 0.3, and the existence of the critical speed which influence the roadbed dynamic characteristic is forecast. The research results provide some important instruction for the design and construction of bridge-approach structure of high speed railway.
机译:通过动态测试系统,研究了高速铁路的现场试验中桥接路面的速度动力学特性,在火车的运行速度下获得了无缝轨道桥接方法的动态应力影响路基的动态应力影响。 同时,提出了速度功率系数的概念,并且桥接路基的速度功率系数小于0.3,并且预测了影响路基动态特性的临界速度的存在。 研究结果为高速铁路桥梁近结构的设计和构建提供了一些重要的指导。

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