摘要
国内甬台温高速公路路堤在施工过程中产生较大的沉降和侧向位移,呈现出滑坡的初期征兆。为提高本路段路堤的抗滑稳定性,在坡脚处布置钻孔灌注桩结合预应力锚索的锚索抗滑桩式挡土结构以控制路堤沉降和侧向变形,并同时实施变形与稳定性监测。通过对该路堤锚桩挡土结构内力与变形的观测监控,取得了较为完整的观测资料,在高路堤填土施工中起到指导与控制作用;结合本工程的实际监测和数据分析,评价锚索抗滑桩加固路堤的机制和效果,提出采用锚索抗滑桩加固措施时应注意的一些问题和建议,以期为类似工程提供参考和借鉴。
Great subsidence and lateral displacement take place in the embankment of Ningbo—TaizhouWenzhou expressway during construction;and embankment presents some initial signs of landslide. In order to improve the stability of embankment against sliding in the section,the anti-sliding piles with prestressed anchor cable which combines some bored pile with prestressed anchor cable are set to control the subsidence and lateral displacement of embankment. At the same time,the monitoring of displacement and stability are carried out. All the observation data are acquired through monitoring the stress and displacement of anti-sliding pile with prestressed anchor cable,in turn this result can control and guide the construction of embankment. Combining actual monitoring data analysis of this project,the reinforcement mechanism and effect of the method to reinforce the embankment using anti-sliding pile with prestressed anchor cable are evaluated;and several qissues and advices for this measurement are presented,which can provide references to similar engineering.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2007年第S2期4538-4544,共7页
Chinese Journal of Rock Mechanics and Engineering
关键词
基础工程
路堤
锚索抗滑桩
观测
加固机制
foundation engineering
embankment
anchor cable anti-sliding pile
observation
reinforcement mechanism
