BFRP约束混凝土柱高温后承载力试验

摘要

进行了玄武岩纤维增强复合材料（ Basalt Fiber Reinforced Polymer，BFRP）约束混凝土柱高温后的承载力试验，结果表明：当炉内温度低于200℃时，试件均表现为纤维布的拉断破坏，同时混凝土被压碎；当炉内温度为375℃时，因大部分环氧树脂胶已挥发，使试件出现了环氧树脂胶与混凝土的黏结破坏；BFRP约束混凝土柱承载力随试件表面温度的升高而逐渐降低。该研究成果可为高温后BFRP加固混凝土结构的安全评估提供参考。%BFRP confined concrete column after high temperature bearing capacity is studied,the results show that when the furnace temperature is less than 200 ℃,Specimens were characterized by the tensile failure of BFRP,and concrete crushed at the same time;when the furnace temperature is 375 ℃,be-cause most of the epoxy resin adhesive has been volatile,and lead bond destruction between BFRP and concrete;load-carrying capacity of BFRP confined concrete with the temperature increasing of specimen surface and gradually was reduced. The results can provide reference for safety assessment of BFRP rein-forced concrete structure after high temperature.