Experimental study of the dynamic response of PVB laminated glass under vented explosion loads of methane–air mixtures

• Published in: International journal of impact engineering Vol. 143; p. 103588
• Main Authors: Liu, Jin-Chun, Yang, Shi-Gang, Yang, Ya, Fang, Qin, Rong, Chao, Gan, Jia-Ping
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.09.2020; Elsevier BV
• Subjects: Accident prevention; Antiknock performance; Curtain walls; Dynamic response; Explosions; Forensic engineering; Gas blasting load; Gas explosions; Glass; Interlayers; Laminates; Methane; Natural gas; Natural gas explosion; PVB laminated glass; Safety glass; Thickness; Natural gas explosion; Dynamic response; Antiknock performance; Gas blasting load; PVB laminated glass
• ISSN: 0734-743X; 1879-3509
• DOI: 10.1016/j.ijimpeng.2020.103588

•The dynamic response of laminated glass under gas explosion loads is closely related to methane concentration.•Different venting closures directly affect the magnitude of the gas blasting loads and thus indirectly affect the center displacement of the glass specimen.•The thickness of the glass layer of laminated glass has a significant effect on the dynamic response under the gas explosion load.•The larger the thickness of the PVB clamp layer is, the stronger the deformation resistance of laminated glass is. Glass curtain walls are widely used in modern architectural design, the majority, of which are built using laminated glass. Shattering of these glass walls during natural gas explosions caused by accidental leakages create hazardous glass shards. This work therefore experimentally investigates the dynamic response of laminated glass during a gas explosion by varying the methane concentration, vent closure material, glass layer thickness, and PVB interlayer thickness. The results indicate that the closer the gas concentration is to 9.5%. The use of a stiffer venting material venting also caused a greater displacement of the glass, thus decreasing its resiliency. The PVB interlayer can bond the glass fragments together to restrain the flying effect. Furthermore, increasing the thickness of the glass, and PVB clamp layers improved the ability of the specimen to resist the gas explosion loads. These test results provide a reference for the design of explosion-resistant laminated glass design and accident prevention.