振冲器

左下段预进占从1997年4月21日～4月29日完工，采用75kW振冲器施工。

The left lower pre advancement section was constructed from April 21 of 1997 to April 28 of 1997 and the 75 W vibroflot was adopted .

右上段进占施工时间1997年2月5日～2月19日，采用液压驱动150kW振冲器。

The right upper pre advancement section was constructed from February 5 of 1997 to February 19 of 1997 and the 150 W hydraulic motored vibroflot was adopted .

采用150kW振冲器进行了处理。

For which the consolidation treatment is made with the method of vibroflotation by the vibrator of 150 kW .

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 ;

但是目前饱和砂土地基高频振动液化特性的研究较少，不利于高频振冲器的开发和推广应用工作。

It also can penetrate without water of pressure , and is suitable for different condition . However , there is little work on the research of dynamic behavior of soil under high frequencies .

通过现场试验，研究了不同振冲工艺及参数、不同型号振冲器对粉细砂地基土加固效果的影响，得出了粉细砂地基中采用无填料振冲法加固的一些定性规律。

Basing on local test , the differences of anchoring effect were studied in different conditions & different technologies and parameters , different models of vibrators .