长江科学院院报2012，Vol.29Issue(2)：72-77,6.
离心模型试验中路堤地基差异沉降控制装置的研制
Development of Control Device in Centrifugal Model Test for Differential Settlement of Embankment Foundation
摘要
Abstract
A device which can control the differential settlement of embankment foundation under centrifugal loading conditions is developed to investigate the transfer and diffusion of differential settlement as well as its influence on the uneven deformation of subgrade surface. The device consists of settlement control system, fixation and supporting device, and differential settlement control boards. Differential settlement of embankment foundation is simulated through the external controller which controls the stepping motor to drive the elevator and to make the differential settlement control boards work. The whole process of differential settlement can be simulated by repeatedly controlling the settlement boards. The device is verified to be reliable and effective by three groups of centrifugal model tests on embankments of different heights. The results show that the uneven deformation slope of subgrade surface have linear' relationship with differential settlement of embankment foundation, and the allowed values of differential settlement of embankment foundation increase with the embankment height when the uneven deformation slope of subgrade surface is the same.关键词
离心模型试验/地基差异沉降/路基面不均匀变形/控制装置Key words
centrifugal model test/ differential settlement of embankment foundation/ uneven deformation of sub-grade surface/ control device分类
建筑与水利引用本文复制引用
陈虎,罗强,张良,万小全,李铁..离心模型试验中路堤地基差异沉降控制装置的研制[J].长江科学院院报,2012,29(2):72-77,6.基金项目
铁道部科技研究开发计划项目(2008G031-4) （2008G031-4）
