关于桩前不开挖的抗滑桩动力离心机模型试验研究  

Experimental study on dynamic centrifuge model for anti-slide pile without excavation

作　　者：吴静华[1] 孙勇[1] 

机构地区：[1]贵州大学喀斯特环境与地质灾害防治重点实验室,贵阳550025

出　　处：《工程建设》2016年第4期1-5,15,共6页Engineering Construction

基　　金：国家自然科学基金资助项目(51168009);贵州省科学技术基金(黔科合J字[2010]2245);贵州省优秀教育人才省长基金(黔省专合字2011-35)

摘　　要：采用离心机振动台试验的方法对抗滑桩桩前不存在开挖的情形进行了研究,输入的地震波为加州El Centro地区某个场地记录到的地面运动的南北分量,没开挖时的峰值加速度为0.37g。研究表明:在不开挖情况下,通过离心机振动台试验可知抗滑桩对周围土体响应有一定的加固和阻滞作用,桩顶位移随地震波的输入变大,抗滑桩各截面的弯矩和动土压力变化相似,最大值都出现桩的下部。Based on method of the centrifuge shaking table test,the anti-slide pile without excavation before it was studied,and the input earthquake waves were the North-South component recorded in a certain field in California EI Centro. The peak acceleration was 0. 37 g without excavation. The research shows that,under condition of non-excavation,the anti-slide pile has a certain reinforcement and retardation action on response of the surrounding soil though the centrifuge shaking table test,the pile top displacement becomes larger with the input of seismic wave,the bending moment of each section of the anti-slide pile is similar to the change of soil pressure,and the maximum value appears in the lower part of the piles.

关 键 词：抗滑桩 动力离心机试验 加速度 位移 弯矩 土压力 

分 类 号：TU473.1[建筑科学—结构工程]