岩土力学2017，Vol.38Issue(8)：2313-2321,2334,10.DOI:10.16285/j.rsm.2017.08.020
渗透作用下土体蠕变与锚索锚固力损失特性研究
Study of anchorage force loss of anchor cable under seepage flow and soil creep
摘要
Abstract
Pre-stressed anchor cables are widely used in tunnels,slopes and foundation pits.The loss of anchorage force affects the anchoring of pre-stressed anchor cable.The engineering accidents of anchorage failure often occur owing to the loss of anchorage force of pre-stressed anchor cable.The stress state of pre-stressed cable anchor is easily changed and anchor failure leads to engineering accident in water-affluent region.Based on the deformation data,this paper establishes a coupling constitutive model considering soil creep,anchorage force loss of pre-stressed anchor cable and seepage force.Then,the three-dimensional creep equation of soil and relaxation equation of anchoring force loss of pre-stressed anchor cables are deduced.Based on FLAC3D sotftare,the corresponding procedure is developed to calculate and analyze the soil creep and anchoring force characteristics loss of the above mentioned foundation pit in coastal region.Combined with monitoring data,the above constitutive model is feasible and correct for analyzing anchoring force loss characteristics of pre-stressed anchor cables under seepage condition.The research results provide meaningful theoretical and practical guide for other similar projects.关键词
蠕变/锚固力/渗流/数值模拟Key words
creep/anchorage force/seepage/numerical simulation分类
建筑与水利引用本文复制引用
谢璨,李树忱,李术才,廖麒凯,赵世森..渗透作用下土体蠕变与锚索锚固力损失特性研究[J].岩土力学,2017,38(8):2313-2321,2334,10.基金项目
国家自然科学基金(No.51379113,No.51134001) （No.51379113,No.51134001）
高等学校博士学科点专项科研基金资助项目(No.20120131110031) （No.20120131110031）
山东省杰出青年基金(No.201313JQE27042).This work was supported by National Natural Science Foundation of China (51379113,51134001),the Research Found for the Doctoral Program of Higher Education of China (20120131110031)and the Outstanding Youth Foundation of Shandong Province,China (201313JQE27042). （No.201313JQE27042）
