摘要
基于实际工程中锚索应力监测数据,结合工程实际施工进度以及基坑开挖过程中土压力变化规律等,研究了桩锚支护结构中锚索部分的应力演化规律,将锚索应力随时间变化分为波动期、急变期、稳定期三个阶段,分析了每个阶段产生的原因以及各自的特点。本文所提出的锚索应力变化阶段划分方式能够适应绝大多数桩锚支护结构锚索应力变化过程,该分类方法对今后桩锚支护结构中锚索应力的研究以及桩锚支护结构在实际工程中的应用具有一定的参考价值。
Based on stress monitoring data of anchor cables in the actual project,combined with the actual construction progress of the project and the law of soil pressure change during the excavation of the foundation pit,the stress evolution law of the anchor cable part in the pile anchor support structure is studied,and the change of anchor cable stress with time is divided into three stages:fluctuation period,rapid change period and stability period,and the causes and characteristics of each stage are analyzed.The stage division method of anchor cable stress change proposed in this paper can adapt to the anchor cable stress change process of most pile anchor support structures,and this classification method has certain reference value for the future research of anchor cable stress in pile anchor support structure and the application of pile anchor support structure in practical engineering.
作者
曾绍勤
ZENG Shaoqin(China Railway Urban Construction Group Nanchang Construction Co.Ltd.,Nanchang Jiangxi 330002,China)
出处
《铁道建筑技术》
2023年第5期184-188,共5页
Railway Construction Technology
基金
中铁城建集团有限公司科技研究开发计划项目(CJKY-NC-2022-008)。
关键词
深基坑
支护结构
锚索
应力演化规律
deep foundation pit
support structure
anchor cable
stress evolution law
