Glue-laminated bamboo for dowel-type moment-resisting connections

Wang, Tsung Hsien; Chung, Yi-Nung; Wang, Shih-Yuan; Chang, Wen‐Shao

doi:10.1016/j.compstruct.2021.113848

Cited by 13 publications

(3 citation statements)

References 37 publications

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“…Besides, splitting could also be postponed by bonding the glulam elements with the reconstructed bamboo along the vertical direction. [16,17] Furthermore, fiber reinforced polymer (FRP) could be used to restrain the development of crack. [18,19] The second approach is to use various kinds of components to strengthen the connection at the structural level, which aims at increasing the rotational stiffness of the connection.…”

Section: Noveltymentioning

confidence: 99%

Reinforced moment‐resisting glulam bolted connection with coupled long steel rod with screwheads for modern timber frame structures

Shu

Ning

Chen

et al. 2022

Earthq Engng Struct Dyn

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Currently, there is no "timber moment frame structural system," as the basic glulam beam-to-column connections (usually represented by the bolted connections with slotted-in steel plates) offer limited rotational stiffness such that they are usually treated as pin connections. This paper proposes an innovative type of moment-resisting glulam beam-to-column connection reinforced by long steel rods with screwheads (LSRSs) and long self-tapping screws (STSs). The motivation is to provide a stiff yet resilient beam-to-column connection that could possibly be used for the mid-rise timber moment frame structural system without the need of shear walls or braces. Six specimens with different diameters of LSRSs were designed and experimentally tested to explore their rotational stiffness, moment-resisting capacities, hysteretic moment-rotation responses, and the associated failure modes. Results indicated that the proposed connection could provide not only a satisfying moment resistance, but also the energy dissipation and fast repairability that is related with structural seismic resilience. The design procedures and recommendations for the proposed connection were also provided based on the tested results. The presented experimental study serves as a handy reference for future designs and applications of the proposed connection in practical engineering projects.

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Section: Noveltymentioning

confidence: 99%

Reinforced moment‐resisting glulam bolted connection with coupled long steel rod with screwheads for modern timber frame structures

Shu

Ning

Chen

et al. 2022

Earthq Engng Struct Dyn

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show abstract

“…Connections, like a fuse in an electrical circuit, are frequently the source of ductility and energy dissipation in the structure in case of overloading because of the brittle failure behavior of wood when stressed in tension or shear [ 7 ]. The connections between structural parts must reinforce the structures to withstand gravity or vertical loads induced by self-weight, live loads, wind, and seismic loads, and then transmit these forces to the foundation [ 8 , 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Withdrawal Performance of Nails and Screws in Cross-Laminated Timber (CLT) Made of Poplar (Populus alba) and Fir (Abies alba)

et al. 2022

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Cross-laminated timber (CLT) can be used as an element in various parts of timber structures, such as bridges. Fast-growing hardwood species, like poplar, are useful in regions where there is a lack of wood resources. In this study, the withdrawal resistance of nine types of conventional fasteners (stainless-steel nails, concrete nails and screws, drywall screws, three types of partially and fully threaded wood screws, and two types of lag screws), with three loading directions (parallel to the grain, perpendicular to the surface, and tangential), and two layer arrangements (0-90-0° and 0-45-0°) in 3-ply CLTs made of poplar as a fast-growing species and fir as a common species in manufacturing of CLT was investigated. Lag screws (10 mm) displayed the highest withdrawal resistance (145.77 N), whereas steel nails had the lowest (13.13 N), according to the main effect analysis. Furthermore, fasteners loaded perpendicular to the grain (perpendicular to the surface and tangential) had higher withdrawal resistance than those loaded parallel to the grain (edge). In terms of the layer arrangement, fasteners in CLTs manufactured from poplar wood (0-45-0°) had the greatest withdrawal resistance, followed by CLTs manufactured from poplar wood in the (0-90-0°) arrangement, and finally, those made from fir wood in the (0-90-0°) arrangement. The fastener type had the most significant impact on the withdrawal resistance, so changing the fastener type from nails to screws increased it by about 5–11 times, which is consistent with other studies. The results showed that poplar, a fast-growth species, is a proper wood for manufacturing CLTs in terms of fastener withdrawal performance.

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“…make it a low-cost substitute for high-tech fibers such as carbon fiber (Yuan et al, 2018). Wang et al (2021) used glass fiber reinforced polymer (GFRP) to reinforce LBL in anti-torque connection. The test results showed that the ultimate strength of bending moment was increased by 37% compared with the specimen without reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Mechanical evaluation on BFRP laminated bamboo lumber columns under eccentric compression

Jian

Zhou

et al. 2022

Advances in Structural Engineering

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Bamboo has been studied and utilized quite significantly in recent years because of its advantages such as short growth period, good appearance, environmental protection and superior mechanical properties. Bamboo is processed into profiles to address inherent issues with size limitation and self-defects and use of BFRP can enhance the mechanical properties of bamboo for widespread application. In this paper, the mechanical properties of BFRP strengthened chamfered laminated bamboo lumber (LBL) columns with four eccentricity e0 of 30 mm, 60 mm, 90 mm, and 120 mm were tested. The strengthening effect of BFRP on the performance of LBL columns subjected to eccentric loading was compared with the specimens without any reinforcement. Several analytical models to capture the mechanical performance of BFRP reinforced LBL columns with different eccentricities have been proposed in the current study.

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Glue-laminated bamboo for dowel-type moment-resisting connections

Cited by 13 publications

References 37 publications

Reinforced moment‐resisting glulam bolted connection with coupled long steel rod with screwheads for modern timber frame structures

Reinforced moment‐resisting glulam bolted connection with coupled long steel rod with screwheads for modern timber frame structures

Withdrawal Performance of Nails and Screws in Cross-Laminated Timber (CLT) Made of Poplar (Populus alba) and Fir (Abies alba)

Mechanical evaluation on BFRP laminated bamboo lumber columns under eccentric compression

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