Design method for the fire resistance of glulam bolted connections under standard fire exposure
To explore fire resistance design methods for bolted connections in timber structures,standard fire tests were conducted on glulam bolted beam-column connections with inserted-in steel plates,and the fire re-sistance time of the connections under constant load was obtained.A database was developed using fire test da-ta from beam-column bolted connections,as well as fire test data from various dowel-type connections gath-ered over the past 30 years worldwide.Based on this database,some formulas relating load ratio to fire resist-ance time were derived,and their accuracy was validated by comparing the theoretical results with experimen-tal data.Additionally,a method for calculating the fire resistance of glulam beam-column bolted connections under combined bending and shear was proposed.The findings indicate that,for a given load ratio,the calcu-lated theoretical fire resistance time closely aligns with the experimental results.The theoretical values are slightly lower than the experimental results,with a maximum error of-11.34％.The conservative nature of the theoretical results provides a safety margin for the fire resistance design of timber connections.
timber structuresbeam to column connectionsfire resistancecalculation methed
万方数据
维普
