摘要
基于软岩地基中全粘结式抗浮锚杆分级加载和多级用循环加载两种抗拔试验结果,分析了全粘结式岩石抗浮锚杆荷载-变形规律、锚固长度、位移允许值及岩石与锚固体粘结强度等取值,试验结果表明:软岩地基中全粘结式抗浮锚杆的变形由弹性变形发展到弹塑性变形,最终达到塑性变形的过程;全粘结式抗浮锚杆在允许变形量在10mm范围内,锚固长度可取到4m是安全的;软岩地基中全粘结式抗浮锚杆与岩体粘结强度特征值最小可取到127kPa。
This paper presents test results of static incremental loading and cyclic loading test results of fully bonded buoyancy anchors in soft rock mass.Various parameters,such as,stress-deformation,bonding length,allowable anchor deflection and bonding strength between anchor and soft rock,are evaluated.The following conclusions could be reached:the deformation characteristics of the fully bonded anchors in soft rock start with the elastic,elasto-plastic and finally,full plastic stage would be reached;An allowable deflection of 10 mm at the head of the anchor can be used;the maximum bond length of 4 meters can be used and the average bond strength,frbk,of 127 kPa can be used in the design.
作者
王小卫
WANG Xiaowei(Jiangsu Jianyuan Geotechnical Engineering Survey Co.,Ltd.,Nanjing 210019)
出处
《土工基础》
2018年第6期681-684,共4页
Soil Engineering and Foundation
关键词
抗浮锚杆
抗拔试验
锚固长度
位移允许值
粘结强度
Buoyancy Rock Anchors
Pullout Tests
Anchor Length
Allowable Deflection
Bond Strength
