2011年8月上 施工技术 第40卷第346期 CONSTRUCTION TECHNOLOGY 91 新型锚固技术加固悬空岩体试验研究 毛筱霏，刘玉茜2，孙莹 (1.西安建筑科技大学理学院，陕西西安710055；2.西安建筑科技大学建筑设计研究院，陕西西安710055) [摘要]砂固预应力铺杆是一种新型的锚固技术，其错固力是由砂体与错杆孔壁之间的摩擦力和机械咬合力提供 的，介绍了砂固预应力错杆的构造形式及施工工艺，揭示了其工作机理，并对错杆抗拔力进行了现场试验及理论研 究，分析了锚杆抗拔力与位移的关系，以及砂体初始密度对抗拔力的影响.结果表明，此种错杆具有优良的力学性 能，完全可以满足小型岩体的加固要求，在工程支护领域中可以推广应用. [关键词]预应力错杆；工作机理；抗拔力 [中图分类号]TU475.8 [文献标识码]A [文章编号]1002-8498(2011)15-0091-03 Experiment Study on the New Anchorage Technology Reinforcing Suspended-rock Mao Xiaofei' Liu Yuqian2 Sun Ying' (1.Science College Xi'an University of Architecture and Technology Xi'an Shaanxi 710055.China; 2.Architectural Design Research Institute Xi'an University of Architecture and Technology Xi'an Shaanxi 710055 China) Abstract:The sand-filled prestressed anchor is a new anchorage technology and its anchorage force is actually the friction resistance and machine occlude force between sand and drill hole.The authors introduce the constitution and construction methods and research the working mechanism of the sand- filling prestressed anchor.The anchor force test and theory of the anchor are studied.The relationship between anchorage force and displacement and the affection of original density of sand on anchorage force are analyzed.The test results indicate that the sand-filled prestressed anchor has excellent mechanics performance and it can be satisfied the reinforced requests of minitype rock.The new technology can be widely used in supporting project. Key words:prestressed anchor...
新型锚固技术加固悬空岩体试验研究.pdf
