纤维增强水泥基复合材料加固梁柱节点抗压性能分析

nalysis of Compresive Properties of Green FiberReinforced Cement-based Composite Reinforced Building Beam-columnJoints

打开文本图片集

中图分类号：TU528.041 文献标志码：A 文章编号：1005-8249（2025）01-0045-05

DO1：10.19860/j.cnki.issn1005-8249.2025.01.009

XIN Fang

(Shandong Fengze Engineering Project Management Co.，Ltd.，Weifang 261OOO，China）

Abstract：To improve thesafetyofreinforcedbeamcolumn joints，thecompressiveperformanceoffiber-reinforcedcementbased composite materialsreinforcedbeam columnjoints is studied.Produce4setsof specimens，1setofcommon beamcolumn joint specimens，and 3 sets of fiber-reinforced beam column joint specimens，with fiber volume contents of 1.0% ， 1.5% ， and 2.0% ，respectively. Compare the density，compressive performance，and bending performance of reinforced and unreinforced specimens. The research results show that the density of the reinforced specimens is relatively $\mathrm{\high{\it\Omega}}$ ，and the density of the fiber-reinforced beam column joint specimens with a fiber volume fraction of 1.5% is relatively high；The compressive strength of the specimen remains the highest after adding 1.5% composite material reinforcement；The decrease in elastic stiffessofallspecimensisslightlysmall，andafterreiforcement，theyarerelativelylessaffctedbypressre；The bending strengthrapidlydecreases during theinitial loading stage，and there isno significant decreasethereafter.However， afterreinforcement，thebendingstrengthofthespecimenreaches1MPa，indicatingasignificantlystrongerbendingcapacity. Whenreinforcing beam column joints withcement-basedcomposite materials，theoptimalcuring time is28days，andthemost suitable fiber volume fraction is 1.5% ：

Key words：grenfiber；reinforced cement base；composite material；reinforcing buildings；beam-column joint；compresive performance

0 引言

梁柱节点是指在结构中梁和柱间的交汇部位，是常规建筑物中的一种连接形式[1-2]。（剩余6692字）