非均质混凝土基复合桥面抗爆炸性能试验研究  

Experimental research on explosion resistance of composite bridge deck with inhomogeneous concrete base

作　　者：高帅 GAO Shuai(China Railway 19th Bureau Group Third Engineering Co.,Ltd.,Shenyang 100136,China)

机构地区：[1]中铁十九集团第三工程有限公司,辽宁沈阳110136

出　　处：《混凝土》2022年第3期20-24,共5页Concrete

基　　金：辽宁省“兴辽英才计划”青年拔尖人才资助项目(XLYC2007146)。

摘　　要：关于提高民用和交通基础设施抗爆炸或冲击载荷能力的研究获得了极大的关注。介绍了混凝土复合桥面在近距离爆炸荷载作用下的全尺寸爆破试验结果,提出并试验了3种不同程度非均质性的组合桥面,该试样深度分布多层玄武岩纤维网格板、总厚度为100 mm的再生织物板和典型的空心预应力板,研究了爆炸损伤程度与复合材料材料特性之间的关系,对近距离爆炸造成的试样损伤进行了详细的研究,发现所有试验的复合试样都有明显的分层现象,层状复合材料的非均质性将内部回弹引起的爆炸损伤转化为层状分层。Due to the current geopolitical situation,great attention has been paid to improving the explosion or shock load resistance of civil and transportation infrastructure.The full-scale blasting test results of concrete-based composite bridge deck under the action of short-range explosive load are introduced,and three kinds of composite bridge decks with different degree of inhomogeneity are proposed and tested.The depth distribution of the specimen is multi-layer basalt fiber grid plate,regenerated fabric plate with a total thickness of100 mm and typical hollow pre-stressed plate.The relationship between the degree of explosion damage and the properties of composite materials is studied.The damage of samples caused by close-range explosion is studied in detail.It is found that all the composite samples tested have obvious stratification phenomenon,while the layered composite materials are not.Homogeneity transforms explosive damage caused by internal rebound into layered layers.

关 键 词：混凝土梁 爆炸性能 非均质性 层状复合材料 

分 类 号：TU528.01[建筑科学—建筑技术科学]