喷涂聚脲弹性体H型钢柱抗爆性能研究  

Study on Blast Resistance of H-section Steel Columns of Spray Polyurea

作　　者：赵亚军[1,2] 王玉珑 ZHAO Yajun;WANG Yulong(School of Civil Engineering,Hebei University of Engineering,Handan,Hebei 056038,China;Mechanics Experiment Teaching Demonstration Center,Hebei University of Engineering,Handan,Hebei 056038,China)

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038 [2]河北工程大学力学实验教学示范中心,河北邯郸056038

出　　处：《河北工程大学学报（自然科学版）》2020年第3期26-32,共7页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：国家自然科学基金资助项目(51908188)。

摘　　要：为研究聚脲涂层对H型钢柱的抗爆效果,基于ANSYS/LS-DYNA有限元软件,对喷涂聚脲弹性体H型钢柱进行抗爆数值分析。研究了H型钢柱在爆炸荷载作用下的动态响应,并分析了不同聚脲厚度对H型钢柱的防护作用及其机理。研究结果表明:当冲击波沿钢柱弱轴方向传播时,冲击波对钢柱的最大破坏作用出现在柱脚附近腹板中心,聚脲涂层能够有效提高H型钢柱的整体刚度和抗爆能力,大幅降低钢柱的整体和局部变形,并减小钢柱吸收的内能。In order to study the anti-explosion effect of polyurea coating on H-section steel columns,the anti-explosion numerical analysis of sprayed polyurea elastomer H-section steel columns was carried out based on ANSYS/LS-DYNA finite element software.The dynamic response of H-section steel columns under explosion was studied.The protective effect of different polyurea thickness on H-section steel columns and its mechanism were analyzed.It is shown that when the shock wave propagates along the weak axis of the steel column,the maximum destructive effect of the shock wave on the steel column appears in the center of the web near the base of the steel column,and the polyure coating can effectively improve the overall stiffness and anti-explosion ability of the H-section steel columns,greatly reduce the overall and local deformation of the steel column,and reduce the absorbed internal energy of the steel column.

关 键 词：聚脲 H型钢柱 爆炸荷载 数值模拟 

分 类 号：TU352.1[建筑科学—结构工程]