碎石填芯钢管桩加固抗液化特性的试验研究  

Study on Anti-liquefaction Characteristics of Gravel-filled-steel Tube Pile in Reinforcement Experiment

作　　者：黄涛[1] 牛琪瑛[1] 汤黄俊 HUANG Tao NIU Qiying TANG Huangj un(College of Architecture and Civil Engineering, Taiyuan University of Technology, Taiyuan 030024,Chin)

机构地区：[1]太原理工大学建筑与土木工程学院,太原030024

出　　处：《太原理工大学学报》2016年第1期32-35,共4页Journal of Taiyuan University of Technology

基　　金：国家青年自然科学基金资助项目:地震波作用下非饱和土中PHC管桩水平振动机理研究(51408393);山西省交通科学研究院开放基金项目(KLTLR-Y13-3)

摘　　要：为了进一步研究碎石填芯钢管桩加固液化土地基的效果和机理,制备了钢管桩、碎石桩及碎石填芯钢管桩加固三种地基模型,模拟地震荷载,进行振动台对比试验。结果表明,碎石填芯钢管桩不仅消散了孔隙水压力,还可以增强土体强度及减小桩体位移,具有良好的加固液化土体的效果。To make further study on the effect and mechanism of the gravel-filled-steel tubular pile in liquefied soil foundation reinforcement, three models, including steel pipe pile composite reinforcement,gravel pile composite reinforcement and gravel-filled-steel tubular pile composite reinforcement,were prepared to conduct shaking table test. The results show that the gravel- filled-steel tubular pile dissipated pore-water pressure, increased soil strength and reduced pile displacement. It turns out to be that gravel-filled-steel tubular pile produces good results in rein- forcing liquefying of soil.

关 键 词：复合桩加固 振动台 孔隙水压力 位移 液化土 

分 类 号：TU473.1[建筑科学—结构工程]