论文部分内容阅读
振冲加固是处理坝基砂层液化的一种方法,是依靠振冲器的强力振动使饱和砂层发生液化,砂颗粒重新排列,空隙减少。同时振冲器依靠水平振动力,在加回填料的情况下,使砂层挤压加密;而且在砂土液化之后,还持续施加往复振动,使初始液化土粒在往复振动应力强制作用下提高液化度,并不断挤紧;同时扩大坝基的液化范围,从而提高振孔周围、特别是振孔之间的加密效果。采用振冲加固处理地基液化,其加固效果
Vibroflotation reinforcement is a method to deal with sand liquefaction at the dam foundation, which relies on the strong vibration of the vibrator to liquefy the saturated sand layer. The sand particles are rearranged to reduce the voids. At the same time, the vibrator relies on the horizontal vibration force to squeeze and sand the sand under the condition of backfill. After the sand is liquefied, the reciprocating vibration is continuously applied so that the initial liquefied soil particles increase under the force of the reciprocating vibration stress Liquefaction, and continue to squeeze tight; while expanding the scope of the liquefaction of the dam foundation, thereby enhancing the vibration around the hole, especially the vibration between the encryption effect. Vibroflotation reinforcement ground liquefaction, the reinforcement effect