Experimental study on mechanical properties of laminated bamboo beam-to-column connections. (1st May 2020)

• Record Type: Journal Article
• Authors: Leng, Yubing; Xu, Qingfeng; Harries, Kent A.; Chen, Lingzhu; Liu, Kewei; Chen, Xi
• Is Part Of: Engineering structures. Volume 210(2020)
• Publication Date: 2020-05-01
• Subjects: Laminated bamboo structures -- Beam-to-column connection -- Bolt arrangement -- Local cross lamination -- Carrying capacity; Structural engineering -- Periodicals; Structural analysis (Engineering) -- Periodicals; Construction, Technique de la -- Périodiques; Génie parasismique -- Périodiques; Pression du vent -- Périodiques; Earthquake engineering; Structural engineering; Wind-pressure; Periodicals; 624.105
• DOI: 10.1016/j.engstruct.2020.110305
• Languages: English
• ISSNs: 0141-0296

Abstract

Highlights: Three types of laminated bamboo beam-to-column connections were proposed. The connections were tested under monotonic and reversed cyclic loads. The influence of bolt arrangement and the local cross-lamination were investigated. The T-connections and L-connections showed higher stiffness and capacities. Calculation was conducted according to Eurocode 5 for discussion. Abstract: Moment-rotation behavior of three types of beam-to-column connections intended for laminated bamboo structures are presented: (a) conventional bolted connections with slotted-in steel plates; (b) T-shaped extended end plate connections with side plates that confine the beam; and, (c) an L-shaped end bracket connection which partially confines both the beam and column. Each connection was tested under monotonic and reversed cyclic loads and the influence of bolt arrangement and the local inclusion of cross-laminated laminae locally in the connection region were investigated. Specimens having cross-laminated laminae did not exhibit parallel-to-grain splitting initiating at the bolt lines which was prevalent otherwise. Connections fabricated with slotted-in steel plates clearly exhibited slip deformation and lower stiffness and capacities than the T-connections and L-connections. Load-carrying capacities calculated according to Eurocode 5 were found to conservatively estimate the capacities of the T-connections and L-connections. For the I-connections, the safety margin was considerably lower.