ABSTRACT
Hollo-Bolt manufactured by Lindapter consists of bolt shank, sleeve, cone, collar and rubber washer. The use of Hollo-Bolts can simplify connections to tubular members since the bolts can be tightened from one side only. Structural behaviour of flush endplate connections using Hollo-Bolts have been extensively investigated (Tizan et al. 2013, Wang et al. 2016), and the results indicate that HolloBolts have excellent performance in resisting shear and tensile forces. This is confirmed by tensile and shear tests of Hollo-Bolts at ambient temperature reported by Lindapter (Lindapter 2011) and a few other researchers (Elghazouli et al. 2009, Liu et al. 2012, Loh et al. 2006, Yeomans 1998). However, no test data of Hollo-Bolts at elevated temperatures is available. With increasing interest in using Hollo-Bolts in construction, understanding their behaviour at elevated temperatures is essential for fire safety design. Therefore, this paper presents a series of tests conducted to investigate the tensile and shear behaviour of Hollo-Bolts at elevated temperatures. The corresponding failure modes and load-deformation curves of Hollo-Bolts are presented. Finite Element (FE) models are developed to simulate the test results.
