(浙江省建筑设计研究院, 杭州 310006)

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。

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

中图分类号:TU470 文献标志码:A 文章编号:1002-848X(2022)15-0142-04

DOI:10. 19701 / j. jzjg. ZIAD2217

Analysis on mechanical performance of composite anchor with embeddedprestressed anchor core

ZHU Wenwei, YANG Xuelin, SHEN Migang, ZHOU Haoyi, DU Shangcheng

( Zhejiang Province Institute of Architectural Design and Research, Hangzhou 310006, China)

Abstract: Aiming at the problems of poor durability and low price-quality ratio of ordinary anchor, complicatedconstruction technology and great hidden danger of water leakage in prestressed anchor, a composite anchor with embeddedprestressed anchor cores was proposed. The composite anchor can effectively control the crack of the anchor body byembedding the pre-tensioned prestressed anchor core. The anchor core is prefabricated in the factory, and no tensioning isrequired during the construction stage, which can simplify the construction process and meet the requirement of anti-leakageof basement floor. Based on a specific engineering and finite element analysis, the design theory of the composite anchorwas given, the mechanical performance of it was analyzed, and the technical feasibility of it was proved.

Keywords:prestressed anchor core; composite anchor; pre-tensioning method; loss of prestress; finite element numericalanalysis

第一作者:祝文畏,硕士,教授级高级工程师,一级注册结构工程师,主要从事岩土工程和复杂超限结构方面的研究,Email:63667030@ qq. com。

[引用本文] 祝文畏,杨学林,沈米钢,等. 内嵌预应力杆芯组合锚杆受力性能分析[ J] . 建筑结构,2022,52( 15) :142-145. ZHU Wenwei,YANG Xuelin,SHEN Migang,et al. Analysis on mechanical performance of composite anchor withembedded prestressed anchor core[ J] . Building Structure,2022,52(15) :142-145.