玻璃纤维增强型钢筋混凝土梁抗爆性能试验研究  

Experimental study on the blast resistance performance of glass fiber reinforced concrete beams

作　　者：范威 蔡路军[1] 吴立过 李嫣惠 邹朋来 FAN Wei;CAI Lu-jun;WU Li-guo;LI Yan-hui;ZOU Peng-lai(Wuhan University of Science and Technology,College of Science,Wuhan 430065,China)

机构地区：[1]武汉科技大学理学院,武汉430065

出　　处：《工程爆破》2024年第3期29-35,45,共8页Engineering Blasting

基　　金：国家自然科学基金资助项目(51574184);湖北省教育厅科学研究计划重点基金资助项目(D20151105)。

摘　　要：为了研究玻璃纤维混凝土梁的抗爆性能,对1根未掺纤维的普通钢筋混凝土(RC)梁和4根玻璃纤维体积掺量分别为0.05%、0.10%、0.15%、0.20%的玻璃纤维钢筋混凝土(GFRC)梁进行爆炸试验,综合分析玻璃纤维体积掺量对钢筋混凝土梁结构在爆炸荷载作用下动态响应的影响。结果表明:4根GFRC梁在爆炸荷载作用下的加速度、应变、损伤指数值、裂缝数量和宽度均小于RC梁,且玻璃纤维体积掺量为0.15%的混凝土梁各项指标相对最小,表明掺入一定量的玻璃纤维能有效抑制混凝土中裂纹的萌生和扩展,可以提高混凝土梁的抗爆性能,且玻璃纤维体积掺量为0.15%的玻璃纤维钢筋混凝土梁抗爆性能较优。In order to study the anti-explosion performance of glass fiber reinforced concrete(GFRC)beams,an ordinary reinforced concrete(RC)beam without fiber and four glass fiber reinforced concrete(GFRC)beams with volume content of 0.05%,0.10%,0.15%and 0.20%respectively were subjected to explosion tests,and the impact of volume content of glass fiber on the dynamic response of reinforced concrete beam structure under explosion load was comprehensively analyzed.The results show that the acceleration,strain,damage index value,number and width of cracks of four GFRC beams under explosive load are smaller than those of RC beams,and the concrete beams with 0.15%volume of glass fiber are relatively the smallest,indicating that a certain amount of glass fiber can effectively inhibit the initiation and expansion of cracks in concrete,and can improve the anti-explosion performance of concrete beams,Moreover,the blast resistance of glass fiber reinforced concrete beams with 0.15%volume fraction of glass fiber is better.

关 键 词：爆炸荷载 玻璃纤维 纤维体积含量 抗爆性能 

分 类 号：U448.33[建筑科学—桥梁与隧道工程] TD235[交通运输工程—道路与铁道工程]