刘均利, 裴天师, 安永昌,等.预埋带锚板预应力螺纹钢筋抗拔性能试验研究[J].河南理工大学学报（自然科学版）,doi:10.16186/j.cnki.1673-9787.2023040001.

LIU J L, PEI T S, AN Y C, et al.Experimental study on pullout performance of prestressed threaded barembedded with anchor plate[J].Journal of Henan Polytechnic University(Natural Science) ,doi:10.16186/j.cnki.1673-9787.2023040001.

预埋带锚板预应力螺纹钢筋抗拔性能试验研究(网络首发)

刘均利1, 裴天师1, 安永昌2, 梁涛2, 陈俊3, 郑艳1

1.桂林理工大学 土木与建筑工程学院，广西 桂林 541004;2.广西桂通工程管理有限公司，广西 南宁 530029;3.湘潭大学 土木工程与力学学院 湖南 湘潭 411105

摘要:为了提高带锚板预应力螺纹钢筋在钢筋混凝土厚板或基础中的锚固性能，以有效锚固长度、套管有 无、锚板宽度和构造钢筋数量为试验参数，对7个试件进行抗拔试验。研究了试件的破坏特征，分析了荷载-位移曲线、极限抗拔承载力、试件开裂荷载、试件屈服点刚度和荷载-应变曲线。试验结果表明：采用套 管试件的开裂荷载比未采用套管试件高3.66倍；基于试验结果和相关文献结果，将破坏类型为锚固区混凝 土锥体破坏试件的试验值与计算值进行对比，Nilforoush建议式、《混凝土结构设计规范》式6.5.1-1和日本 JSCE规范式9.2.11分别比试验值低19%、17%和10%。以上结果对采用套管可以有效减缓预应力螺纹钢筋 表面凸出的肋纹对混凝土造成剥裂或减缓混凝土试件表面裂缝开展有启发；对使用《混凝土结构设计规范》 式6.5.1-1计算抗拔承载力较为安全，又可避免预应力螺纹钢筋由于锚固长度过长造成的浪费有指导作用。

关键词:带锚板;带套管;预应力螺纹钢筋;抗拔承载力;试验研究

中图分类号：TU375;TU511.32

doi:10.16186/j.cnki.1673-9787.2023040001

基金项目:国家自然科学基金资助项目（52068012）

收稿日期:2023-04-02

修回日期:2023-05-29

网络首发日期:2023-11-29

Experimental study on pullout performance of prestressed threaded barembedded with anchor plate（Online）

LIU Junli1, PEI Tianshi1, AN Yongchang2, LIANG Tao2, CHEN Jun3, ZHENG Yan1

1.School of Civil and Architectural Engineering， Guilin University of Technology， Guilin  541004， Guangxi，China;2.Guangxi Guitong Engineering Management Co.， Ltd.， Nanning  530029， Guangxi，China;3.College of Civil Engineering and Mechanics， Xiangtan University， Xiangtan  411105，Hunan， China

Abstract:In order to improve the anchorage performance of prestressed threaded steel bars with anchor plates in reinforced concrete slabs or foundations. Taken the effective anchorage length， the presence or absence of sleeve， the width of the anchor plate and the number of structural reinforcement as the test parameters， the pull-out test was carried out on 7 specimens. The failure characteristics of the specimen were studied， and the load-displacement curve， ultimate pull-out capacity， cracking load， yield point stiffness and load-strain curve of the specimen were analyzed. The test results show that the cracking load of the specimen with sleeve was 3.66 times higher than that of the specimen without sleeve. Based on the test results and the results of related literature， the test values of the specimens whose failure type was anchorage zone concrete failure were compared with the calculated values， The formula suggested by Nilforoush， formula 6.5.1-1 of "Code for Design of Concrete Structures" and formula 9.2.11 of Japanese JSCE code was 19%， 17% and 10% lower than the test value， respectively. The above results was enlightened to the use of sleeves to effectively slow down the protruding ribs on the surface of prestressed threaded steel bars to cause spall of concrete or slow down the development of cracks on the surface of concrete specimens； It was safer to use formula 6.5.1-1 of "Code for Design of Concrete Structures" to calculate the uplift bearing capacity， and it could also avoid the waste of prestressed threaded steel bars due to excessive anchorage length.

Key words:anchor plate;sleeve;prestressed threaded steel baranchorage performance

CLC：TU375;TU511.32