钢筋混凝土梁高温试验现象及损伤  

Phenomena and Damage Degree of Reinforced Concrete Beams after High Temperature

作　　者：骆开静[1] 高全臣[1] 王凯 薛东朝 张文强[1] 鞠永伟 赵鹏 

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京100083 [2]青岛北洋建筑设计有限公司,青岛266100

出　　处：《科学技术与工程》2017年第27期270-274,共5页Science Technology and Engineering

摘　　要：进行了相同条件下不同受火时间的钢筋混凝土梁的高温试验,通过试验数据及表观现象分析,研究火灾中受火时间分别为0 h,0.5 h,1 h,1.5 h,2 h,3 h,钢筋混凝土梁构件宏观方面的变化,包括质量损失及表观颜色,裂缝,保护层等的变化规律和高温前后纵波波速的变化规律,总结出不同受火时间对钢筋混凝土梁构件损伤程度的影响。The high temperature experiment was proposed to study the effect of reinforced concrete beams in macro-scale at the different fire age,which is the only variety while the other conditions are the same. The fire age is respectively 0 h,0. 5 h,1 h,1. 5 h,2 h and 3 h. It includes the change rule about mass loss,surface clolor,cracks opening,concrete cover and the speed of longitudinal wave of ultrasonic before and after fire. It can be concluded the effect of damage degree for the reinforced concrete beams at different fire age based on the experiment.

关 键 词：钢筋混凝土梁 受火时间 高温试验 火灾 

分 类 号：TU502.8[建筑科学—建筑技术科学]