地聚物混凝土梁的抗冲击性能研究  

Impact Resistance of Geopolymer Concrete Beams

作　　者：周芬[1] 陈恩至 杜运兴[1] ZHOU Fen;CHEN Enzhi;DU Yunxing(College of Civil Engineering,Hunan University,Changsha,Hunan 410082,China)

机构地区：[1]湖南大学土木工程学院,湖南长沙410082

出　　处：《公路工程》2023年第2期165-170,共6页Highway Engineering

基　　金：国家自然科学基金项目(51638008,52178206)。

摘　　要：采用单次落锤冲击试验对地聚物混凝土梁的抗冲击性能进行研究,以混凝土种类与强度为研究变量,设计了3根地聚物混凝土(GC)试验梁与1根普通混凝土(OPC)试验梁,试验获得了各试验梁的跨中挠度、冲击力、支座反力的时程曲线,以及裂缝分布和破坏模式,并根据混凝土种类与强度的不同对试验梁冲击行为的差异进行了分析,以评价这种地聚物混凝土梁的抗冲击性能。The impact resistance of geopolymer concrete beam is studied by single drop hammer impact test.Taking the type and strength of concrete as the research variables,three geopolymer concrete(GC)test beams and one ordinary concrete(OPC)test beam are designed.The time history curves of mid span deflection,impact force and support reaction,crack distribution and failure mode of each test beam are obtained,according to the different types and strength of concrete,the difference of impact behavior of the test beam is analyzed to evaluate the impact resistance of this geopolymer concrete beam.

关 键 词：地聚物混凝土梁 落锤试验 破坏形态 冲击性能 

分 类 号：TU375.1[建筑科学—结构工程]