级配砂 meaning in Chinese
well graded sand
Examples
- A certain thickness of sand cushion of a certain size or gradation is paved between the foundation and ground in this new method . when earthquake happens the sand cushion will have plastic shearing strain , reducing the input of high frequency volume , thus consume the earthquake energy form substrate . it is showed in shaking table experiments that there is relevant slippage between foundation and sand cushion , which can prevent the seismic energy from being passed to the above structure and thus reduced the seismic role for the above structure
在建筑物的基础与地基之间铺设一定厚度、某种单一粒径或级配砂垫层，在地震作用时砂垫层发生的塑性剪切变形，减少地震波高频分量的输入，从而消耗了下层传来的地震能量；振动台试验表明，当振动发生时，基础与砂垫层之间有明显的滑移产生，这就对地震能量向上部结构的传递起到了隔断作用，因而对上部结构起到了减震作用。