内嵌预应力杆芯组合锚杆受力性能分析  

Analysis on mechanical performance of composite anchor with embedded prestressed anchor core

作　　者：祝文畏[1] 杨学林[1] 沈米钢[1] 周豪毅 杜尚成 ZHU Wenwei;YANG Xuelin;SHEN Migang;ZHOU Haoyi;DU Shangcheng(Zhejiang Province Institute of Architectural Design and Research,Hangzhou 310006,China)

机构地区：[1]浙江省建筑设计研究院,杭州310006

出　　处：《建筑结构》2022年第15期142-145,共4页Building Structure

摘　　要：针对普通锚杆耐久性差、性价比低,预应力锚杆存在施工工艺复杂、渗水隐患大等问题,提出了一种内嵌预应力杆芯的组合锚杆。该组合锚杆通过内嵌先张法预应力杆芯,可有效控制杆身裂缝;且杆芯为工厂预制,施工阶段无须张拉,可简化施工流程,符合地下室底板防渗漏要求。依托工程实例与有限元数值分析,给出了组合锚杆的设计理论,对其进行了受力性能分析,证明了其在技术上的可行性。Aiming at the problems of poor durability and low price-quality ratio of ordinary anchor,complicated construction technology and great hidden danger of water leakage in prestressed anchor,a composite anchor with embedded prestressed anchor cores was proposed.The composite anchor can effectively control the crack of the anchor body by embedding the pre-tensioned prestressed anchor core.The anchor core is prefabricated in the factory,and no tensioning is required during the construction stage,which can simplify the construction process and meet the requirement of anti-leakage of basement floor.Based on a specific engineering and finite element analysis,the design theory of the composite anchor was given,the mechanical performance of it was analyzed,and the technical feasibility of it was proved.

关 键 词：预应力杆芯 组合锚杆 先张法 预应力损失 有限元数值分析 

分 类 号：TU470[建筑科学—结构工程]