摘要
岩石吸能锚杆有效解决了工程领域中软岩大变形和高冲击荷载的问题,在深部软岩工程中发挥着重要的作用,分别从材料和结构方面归纳和阐述了国内外典型岩石吸能锚杆的发展历程,根据岩石吸能锚杆组成方式和吸能机理,将岩石吸能锚杆分为材料型和结构型两类,总结了两类锚杆中典型岩石吸能锚杆的结构组成元件与杆体本构关系。另外还引入微型阻尼器装置,设计了一种具有高强、高韧、高吸能效率的新型阻尼器式(DTEA)岩石吸能锚杆,完成了DETA岩石吸能锚杆在静力、临界静力及高冲击3种状态下杆体本构关系理论的推导。
Energy-absorbing rock bolts play an important role in deep soft rock engineering,as an efficient solution to large deformation and impact load of soft rocks in the engineering field.The development history of typical energy-absorbing rock bolts at home and abroad is summarized and illustrated in terms of materials and structures.By the composition and energy absorbing mechanism,energy-absorbing rock bolts are divided into two categories:materials and structures.The structural components and constitutive relations of typical energy-absorbing rock bolts are summarized.In addition,a new type of DTEA energy-saving rock bolt featuring high strength,toughness and energy absorption efficiency was designed with the miniature damper,and the constitutive relation of the DTEA energysaving rock bolt under static force,critical static force and high impact was theoretically deduced.
作者
尚江淮
缪易辰
潘文
彭启友
杨帅帅
袁勋
SHANG Jiang-huai;MIAO Yi-chen;PAN Wen;PENG Qi-you;YANG Shuai-shuai;YUAN Xun(School of Architectural Engineering and Mechanics,Kunming University of Science and Technology,Co.,Ltd.,650500,Kunming,China;Earthquake Engineering Researching Center of Yunnan,Co.,Ltd.,650500,Kunming,China;MCC5 Group Shanghai Corporation Ltd,201900,Shanghai,China;China Railway Eryuan Engineering Group Co.,Ltd.,610031,Chengdu,China)
出处
《建筑技术》
2024年第16期2038-2044,共7页
Architecture Technology
关键词
岩石吸能锚杆
本构关系
冲击荷载
负泊松比
阻尼器
energy-absorbing rock bolt
constitutive relation
impact load
negative poisson ratio
damper
