(1 大连万达商业地产股份有限公司， 北京 100022； 2 中国建筑科学研究院， 北京 100013；3 北京雄杰方业建筑技术发展有限责任公司， 北京 100176)

［摘要］针对工程中常用的膨胀型锚栓、模扩底锚栓、自切底锚栓和化学锚栓进行了常温条件、低温安装条件和高温受火条件下的基本抗拉性能试验，研究了锚栓在不同试验条件下的抗拉性能。研究结果表明，模扩底锚栓和自切底锚栓在各种工况下均表现出良好的抗拉性能，抗拉承载力稳定性良好；化学锚栓在常温条件下抗拉性能良好，低温安装和高温受火条件下承载力与稳定性有所下降；膨胀型锚栓在所有工况下均发生拔出破坏，承载力水平低，稳定性差。根据试验结果给出工程中推荐使用锚栓的顺序为模扩底锚栓、自切底锚栓、化学锚栓、膨胀型锚栓。

［关键词］锚栓； 抗拉试验； 常温； 低温安装； 高温受火

中图分类号：TU606文献标识码：A文章编号：1002-848X(2017)04-0063-04

Tensile property research on anchor bolt under low temperature installation and high-temperature fire exposure condition

Liu Zheng1, Zhang Dongguang1, Zhang Ke1, Zhang Qin2, Chen Tao2, Liu Jieping3

(1 Dalian Wanda Commercial Properities Co.,  Ltd.,  Beijing 100022, China; 2 China Academy of Building Research, Beijing 100013, China; 3 Beijing Xiongjie Fangye Construction Technology Development Co.,  Ltd.,  Beijing 100176, China)

Abstract:Through basic tensile experiments on expansion anchor bolt, undercut anchor bolt, self-cutting undercut anchor bolt and bonded anchor bolt under ambient temperature condition, low temperature installation condition and high-temperature fire exposure condition, the tensile properties of anchors under different conditions were studied. The research results indicate that undercut anchor bolt and self-cutting undercut anchor bolt exhibit good tensile properties and tensile bearing capacity has good stability. Bonded anchor bolt exhibits good tensile properties under ambient temperature condition, but the tesile properties and stability decrease under low temperature installation condition and high-temperature fire exposure condition. The failure mode of expansion anchor bolt is pull-out failure under all conditions, with low-level bearing capacity and bad stability. The recommended usage sequence of anchor bolt in engineering is undercut anchor bolt, self-cutting undercut anchor bolt, bonded anchor bolt and expansion anchor bolt according to experimental results.

Keywords:anchor bolt; tensile experiment; ambient temperature; low temperature installation; high-temperature fire exposure

作者简介：刘征，高级工程师，一级注册结构工程师，Email: gongchengyx@sohu.com。