摘要
主缆和扣索锚碇系统的安全稳定性评价一直是困扰工程技术人员的关键技术问题。本文以张吉怀酉水大桥施工锚碇系统为例,在详细分析工程地质特点和设计资料的基础上,建立FLAC3D实体模型,分析主缆施工前和主揽施工后等多种工况下围岩、预应力锚索、锚固体的应力和变形与塑性区分布特征,计算各构件与关键部位的安全系数,并对其安全性进行评价。结果表明:施工过程中围岩、预应力锚索及锚固体变形均较小,均处于安全稳定状态,并有一定的安全储备。
The safety and stability evaluation of main cable and buckle anchorage system is always a key technical problem that puzzles engineers and technicians.This paper takes anchorage system of Youshui bridge on Zhangjihuai Railway as a study case,builts an FLAC3D physical model based on a detailed analysis of engineering geological characteristics and design materials.We analyzed the stress,deformation and plastic zone distribution characteristics of the surrounding rocks,prestress anchorage cables and anchor solids under various working conditions before and after construction of main cable,calculated the safety coefficients of each component and critical parts,and finally evaluated their safety.The results show that the deformation of surrounding rocks,prestress anchorage cables and anchor solids is small in the construction process,all of them are in a safe and stable state,having the security of reserves.
作者
余再富
李元松
汤新能
戴哲
王玉
李新坤
YU Zaifu;LI Yuansong;TANG Xinneng;DAI Zhe;WANG Yu;LI Xinkun(School of Civil Engineering and Architecture,Wuhan Institute of Technology,Wuhan 430074,China)
出处
《武汉工程大学学报》
CAS
2021年第2期197-201,共5页
Journal of Wuhan Institute of Technology
基金
武汉工程大学第十一届研究生教育创新基金(CX2019042)。
