建筑结构学报2025，Vol.46Issue(9)：276-288,13.DOI:10.14006/j.jzjgxb.2024.0483
远爆作用下PVB中空夹层玻璃的协同工作机制及简化设计方法
Collaborative working mechanism and simplified design method of PVB insulating laminated glass under far-field explosions
摘要
Abstract
To systematically investigate the response characteristics and collaborative working mechanism of frame-supported PVB(polyvinyl butyral)-laminated insulating glass under far-field blast loading,a finite element model considering the fluid-structure interaction between the glass panels and cavity was developed using LS-DYNA and validated against the test results.Through parametric analysis,three typical collaborative modes(contact collaborative load-bearing mode,non-contact collaborative load-bearing mode and independent front panel load-bearing mode)were identified,along with their respective load-sharing characteristics.Three key parameters(energy absorption difference coefficient,panel energy proportion coefficient,and displacement proportion coefficient)were introduced to quantitatively characterize the load sharing features between the inner and outer panels,and their relationships with blast scenarios,panel sizes,and insulating cavity thicknesses were systematically established.Furthermore,the dimensionless stiffness ratios between the glass panels and the insulating cavity were proposed.Results indicate that the displacement proportion coefficient is insensitive to scaled distance but exhibits a positive correlation with the stiffness ratio.Superior collaborative performance between panels is observed at stiffness ratios below 0.6.Finally,a simplified dynamic load sharing factor-based method was proposed and validated,demonstrating high accuracy within scaled distances of 4.3 m/kg1/3 to 10.8 m/kg1/3,panel and cavity width-to-thickness ratios exceeding 125 and 83,respectively.关键词
PVB中空夹层玻璃/抗爆设计/协同工作机制/场地爆炸试验/数值模拟/动态荷载分配系数Key words
PVB insulating laminated glass/blast resistant design/collaborative working mechanism/field blast test/numerical simulation/dynamic load sharing factor分类
建筑与水利引用本文复制引用
陈素文,陈旭,金志鹏,陈星..远爆作用下PVB中空夹层玻璃的协同工作机制及简化设计方法[J].建筑结构学报,2025,46(9):276-288,13.基金项目
国家自然科学基金面上项目(51678448,52478551),土木工程防灾减灾全国重点实验室自主课题(SLDRCE 19-B-18). （51678448,52478551）
