Site 4 #15 Double Row of Beams test pad liquefaction tests

Four 2D geophone sensors and five PPTs are pushed into the ground at varying depths according to a general sensor layout. The vibroseis T-Rex is used to cyclicly load the ground with 100 cycles in staged loading trials with forces ranging from 3,000 to 30,000 lbs. The sensors measured the ground response to cyclic loading with regard to ground motion and the development of water pressure.

按照通用传感器布设方案，将4个二维检波器（2D geophone）与5个PPT传感器埋设于不同深度的地下。本试验采用特雷克斯可控震源（Vibroseis T-Rex），在分级加载试验中以3000至30000磅力的载荷对地面进行100次循环加载。上述传感器采集了循环载荷作用下的地面响应，涵盖地面运动与水压力的演化过程。