大隆水库大坝坝基为含卵砾中粗砂层，即使大功率振冲器也难以贯入。
The foundation of the dam for Dalong reservoir consists of the layer of medium-coarse sand with gravel, so it is difficult to be penetrated even by the high-power vibrator.
目前普遍使用的电动型振冲器难以解决这些问题，因此在一些大型工程的地基处理中已经应用进口高频液压振冲器。
It is difficult to deal with these problems only by depending on electric vibrator. So imported vibrator of high-frequency has been used in the foundation treatment of some large construction.
现场试验包括：①测定振冲器水平振动力作用下产生的地面加速度以及制桩时引起的地面加速度与距振点距离之间的关系；
The in-situ measurement includes:( 1 ) the ground acceleration due to horizontal vibrating force caused by the vibroflot and its variation with the distance from the vibrating center;
本文利用神经网络PID控制算法，对使用磁流变阻尼器和钢丝绳减振器的舰用智能减振抗冲元件进行了理论和仿真研究。
In this dissertation, theoretical and numerical simulation studies have been conducted about structure vibration control with MR dampers, wire rope isolators and neural network PID control strategy.
本文利用神经网络PID控制算法，对使用磁流变阻尼器和钢丝绳减振器的舰用智能减振抗冲元件进行了理论和仿真研究。
In this dissertation, theoretical and numerical simulation studies have been conducted about structure vibration control with MR dampers, wire rope isolators and neural network PID control strategy.
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