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通过大型振动台试验研究地震荷载作用下边坡抗滑桩的抗震性能,振动台试验边坡模型放在一个长3.7 m、宽1.5 m、高1.8 m的模型箱中。模型与原型边坡按照尺寸相似比1∶20进行模型试验相似设计。经过配合比试验由标准细砂、石膏粉、滑石粉、甘油、水组成相似材料,通过控制密度2.5 g/cm3垒入模型箱中。模型振动台试验通过输入3种不同的地震波,不断加大输入地震波的幅值,通过监测桩后土压力、边坡坡面加速度和位移响应研究抗滑桩在地震作用下边坡抗震机制和地震作用桩后土压力分布形式和抗滑桩的抗震性能。试验研究为边坡抗滑桩抗震设计奠定了良好的基础。
The seismic performance of the anti-slide piles under the earthquake load is studied by the large-scale shaking table test. The shaking table test slope model is placed in a model box with a length of 3.7 m, a width of 1.5 m and a height of 1.8 m. Model and prototype slope according to the size of similar 1:20 model similar design. After the test by the proportion of standard fine sand, gypsum powder, talc, glycerol, water, similar materials, by controlling the density 2.5 g / cm3 base in the model box. The shaking table test of the model increases the amplitude of the input seismic wave by inputting three different kinds of seismic waves and studies the anti-seismic mechanism and seismic action of the anti-slide pile under earthquake action by monitoring the post-pile earth pressure, the slope slope acceleration and the displacement response EARTH PRESSURE DISTRIBUTION PATTERN AND ASEISMIC BEHAVIOR OF ANTISTATIC PILES. Experimental research has laid a good foundation for anti-slide pile anti-seismic design.