山东建筑大学学报2015，Vol.30Issue(5)：429-434,440,7.
火灾后无机胶植筋拉拔试验研究
Experimental study on the inorganic anchorage drawing after fire
摘要
Abstract
Inorganic adhesive with organic adhesive has good performance of high temperature resistance, and fire inorganic anchoring adhesive tensile experiment has important theoretical significance. to improve anchorage technology standard. This paper made a research on the normal temperature inorganic adhesive anchorage drawing bearing capacity,for different bar diameter(14 mm, 16 mm,22 mm),different anchorage depth(15 d,20 d,22 d)of the member. By summarizing its failure mode analysis and comparing each specimen drawn anchorage ultimate bearing capacity and the loss of capacity,the paper derived the relationship between anchorage depth,bar diameter and pull bearing capacity. The results show that:when the specimen after the fire with has the anchorage depth of 15d and 20d,reinforced specimen slippage occurs;when the anchorage depth is 22d,the specimen reinforced necking destruction. When the bar diameter is constant and the anchorage depth is 15d or 20d,its high temperature limit tension after reduction than the room temperature was above 50%;With the increase of the depth of embedded steel bars,concrete internal temperature field is gradually decreasing,after high temperature of the ultimate tensile bearing capacity an increasing trend over the two changes,and the longer the length of anchoring the more obvious the ultimate pullout capacity increases.关键词
植筋/无机胶/火灾/拉拔承载力Key words
post-installed rebar/inorganic adhesive/fire/drawing bearing capacity分类
建筑与水利引用本文复制引用
李树明,陈海强,惠守江,王欣..火灾后无机胶植筋拉拔试验研究[J].山东建筑大学学报,2015,30(5):429-434,440,7.基金项目
住房和城乡建设部科学技术项目(2010-K3-53) （2010-K3-53）
山东省教育厅资助项目(J10LE53) （J10LE53）
