反向槽钢连接抗连续倒塌性能参数化分析  

Parametric Study on Reverse Channel Connection Against Progressive Collapse

作　　者：张洋洋 赵丽洁[1] 王昊 张照闪 ZHANG Yangyang;ZHAO Lijie;WANG Hao;ZHANG Zhaoshan(School of Civil Engineering,Hebei University of Engineering,Handan 056038,China;School of Civil Engineering,Tianjin Chengjian University,Tianjin 300384,China;The Development Construction Co.,Ltd of China Construction Eighth Engineering Division,Qingdao 266011,China)

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038 [2]天津城建大学土木工程学院,天津300384 [3]中建八局发展建设有限公司,山东青岛266011

出　　处：《粉煤灰综合利用》2024年第6期108-114,154,共8页Fly Ash Comprehensive Utilization

基　　金：河北省自然科学基金青年基金项目(E2019402183);邯郸市科学技术研究与发展计划项目(19422051008-29)。

摘　　要：梁柱节点连接部位是建筑结构抵抗连续倒塌的关键位置。针对较新型的反向槽钢连接形式,通过显式动力学程序ANSYS/LS-DYNA建立反向槽钢连接试件的三维有限元模型,对中柱移除条件下的反向槽钢连接抗连续倒塌性能展开参数化分析,研究了钢梁跨高比和端板构造形式对反向槽钢连接抗连续倒塌性能的影响规律。结果表明:随着跨高比增加,反向槽钢连接的梁柱节点极限承载力下降,而悬链线机制抗力对总承载力的贡献呈增加趋势;采用外伸端板的构造形式可以使反向槽钢连接具有更优的抗连续倒塌性能。The connection between beam column nodes is a critical location for building structures to resist continuous collapse.A three-dimensional finite element model of a reverse channel steel connection specimen was established using the explicit dynamics program ANSYS/LS-DYNA for a relatively new type of reverse channel steel connection.The anti continuous collapse performance of the reverse channel steel connection under the condition of removing the center column was analyzed parametrically,and the influence of steel beam span to height ratio and end plate construction form on the anti continuous collapse performance of the reverse channel steel connection was studied.The results show that the ultimate bearing capacity of the reverse channel connection decreases with the increase of the span-depth ratio,while the contribution of the catenary effect to the total bearing capacity increases;The inverted channel steel connection has better resistance to continuous collapse by adopting the construction form of extending the end plate.

关 键 词：反向槽钢连接 连续倒塌 数值模拟 跨高比 端板 

分 类 号：TU391[建筑科学—结构工程]