空心钢管混凝土构件抗侧向冲击性能研究  

Impact resistance of hollow concrete filled-steel tubular members subjected to lateral impact loading

作　　者：王洪欣[1] 查晓雄[1] 叶福相[1] 

机构地区：[1]哈尔滨工业大学深圳研究生院城市与土木工程学科部,广东深圳518055

出　　处：《华中科技大学学报（自然科学版）》2010年第8期107-110,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：深圳科技计划资助项目(深科信[2009]37号)

摘　　要：采用落锤冲击实验和有限元方法对空心钢管混凝土构件的抗侧向冲击性能进行研究.实验结果表明:当空心率相同时,随着冲击速度的增加,构件的变形增大;当锤重和冲击速度不变时,随着构件空心率的增大,构件变形增加、所受的冲击力减小.采用有限元方法与实验结果进行对比分析,两者结果相符;同时采用有限元方法分析了材料强度、边界条件和空心率等因素对构件抗侧向冲击性能的影响,结果表明,提高材料的强度、加强构件的边界约束可以提高构件的抗冲击性能,而空心率的增大降低了构件的抗冲击性能.Drop hammer experimental methods and finite element （FE） methods were used to research the impact resistance of hollow concrete-filled steel tubular （H-CFST） members subject to lateral impact loading. The deformation increased with the increasing velocity of the drop hammer when the hollow ratio of member is invariable. The deformation increased with the increasing hollow ratio when the mass and velocity of the drop hammer is invariable. The results of FE methods have a good agreement with the experiments and some factors that related with the impact resistance of H-CFST members were discussed by FE methods. It shows that the impact resistances improved with strengthen of materials and boundary conditions, and weakened with the incensement of the hollow ratio of members.

关 键 词：冲击 有限元方法 变形 空心率 空心钢管混凝土 落锤 

分 类 号：TU375[建筑科学—结构工程]