层状地层全长粘结型锚杆锚固力学效应分析
摘要:考虑地层分层特征,根据剪切位移法基本原理,推导了拉拔荷载作用下层状地层全长粘结型锚杆位移、轴力及锚固体周边剪应力解析解,并结合FLAC模拟算例对比验证该方法的可行性;研究发现地层间界面处锚杆周边剪应力及轴力分布分别存在突变点和折点,其变化程度与地层物理力学性质有关,对此,提出了层状地层全长粘结型锚杆布置方案的建议。
Abstract:Based on the shear displacement method and characteristics of soil distribution, the analytic solutions arepresented for anchor displacement, shear stress and axial force of wholly grouted anchor embedded in layered soil under pull force, the correctness is verified by engineering example compared with FLAC numerical calculation. It is discovered that the distribution curves of anchor shear stress have jump points, and the distribution curves of anchor axial force have turned the points in the layered soil interface, the amplitude of variation have some connection with physical and mechanical properties of layered soils, so, the installment measure of wholly grouted anchor embedded in layered soil is suggested.
中文标题：
层状地层全长粘结型锚杆锚固力学效应分析
Mechanical Effect Analysis of Wholly Grouted Anchor in Layered Soil
作者：
周丹
Zhou Dan
作者简介:周丹,1976年生,男,湖南长沙人,硕士,工程师,主要从事结构与岩土体相互作用研究与设计工作。E-mail:zhoudansha@163.com
通讯地址：
湖南楚翰建设工程有限公司, 湖南长沙 410116
ChuhanConstructionEngineeringCo.,LTDofHunan,Changsha410116,Hunan,Chins
中图分类号:TU473.2
doi:10.3969/j.issn.1007-2993.2012.01.007
出版物：岩土工程技术
收稿日期:2011-09-03
网络出版日期:2021-07-06
关键词:层状地层,全长粘结型锚杆,拉拔荷载,剪切位移法,力学效应分析
Key words:layered soil,wholly grouted anchor,pull force,shear displacement method,mechanical effect analysis
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