玄武岩纤维布约束混凝土柱耐火性能热因素分析

关键字：玄武岩,纤维,布约束,混凝土柱,耐火

（湖北商贸学院 土木工程学院，湖北 武汉  430079）

    摘要：对玄武岩纤维复合材料（BFRP）约束混凝土柱在高温下的温度场和极限承载力进行了分析。结果表明，对于有机胶约束混凝土柱，当表面温度高于340 ℃后约束开始消失；对于无机胶约束混凝土柱，当表面温度高于580 ℃后约束开始消失；当温度达到800 ℃时，无机及有机胶粘贴的玄武岩纤维布均失去约束效力；BFRP有一定的隔热能力，使用无机胶粘贴的BFRP其隔热性能优于有机胶。
    关键词：BFRP；混凝土柱；耐火性能；粘结剂；热因素分析
    中图分类号：TU528.7        文献标识码：A        文章编号：1001-702X（2017）11-0051-04
 

Analysis on thermal factor to fire-resistance performance of basalt fiber cloth confined concrete column
LI Wei
（School of Civil Engineering，Hubei Commercial College，Wuhan 430079，China）

    Abstract：This paper analyzed the temperature field and ultimate load-carrying capacity of BFRP confined concrete at high temperature. The results show that for organic glue，the constraint begin to disappear when the surface temperature over 340 ℃. And for inorganic glue，the constraint begin to disappear when the surface temperature over 580 ℃. However，when the surface temperature is 800 ℃，both of organic glue and inorganic glue lose the constraint efficacy on BFRP concrete. BFRP has a certain heat-insulating capability，and the heat-insulating capability of BFRP with inorganic glue is superior to BFRP with organic glue.
    Key words：BFRP，concrete column，fire resistance，binder，thermal factor analysis