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A platform for research: civil engineering, architecture and urbanism
Influence of cracks on the mechanical performance of dowel type glulam bolted joints
Graphical abstract
HighlightsThe effect of cracks on behavior of bolted joints is experimentally investigated.Different parameters and crack patterns are included in the experimental research.An analytical method is proposed to predict the capacity of cracked glulam joints.
AbstractCracks are easily observed in glulam bolted joints due to the high moisture transport rate in the area and constraint stresses caused by the presence of steel fasteners. The purpose of this research is to explore to what extent initial cracks affect the mechanical performance of bolted glulam joints. Experiments were conducted on full-scale specimens with different bolt diameters, bolt layouts, and combinations of different crack patterns (e.g. crack length, location, etc.) were considered. This paper presents the failure modes and the reduction in several mechanical parameters of cracked glulam joints. It is found that initial cracks have a significant effect on the mechanical behavior of the joints. The cracks lead to a reduction up to 52% in the stiffness and a reduction up to 61% in the ductility ratio of the joints, respectively. In addition, an analytical method based on the yield theory and fracture mechanics was proposed to predict the load carrying capacity of the cracked glulam joints, and the proposed model was further verified by the experimental results.
Influence of cracks on the mechanical performance of dowel type glulam bolted joints
Graphical abstract
HighlightsThe effect of cracks on behavior of bolted joints is experimentally investigated.Different parameters and crack patterns are included in the experimental research.An analytical method is proposed to predict the capacity of cracked glulam joints.
AbstractCracks are easily observed in glulam bolted joints due to the high moisture transport rate in the area and constraint stresses caused by the presence of steel fasteners. The purpose of this research is to explore to what extent initial cracks affect the mechanical performance of bolted glulam joints. Experiments were conducted on full-scale specimens with different bolt diameters, bolt layouts, and combinations of different crack patterns (e.g. crack length, location, etc.) were considered. This paper presents the failure modes and the reduction in several mechanical parameters of cracked glulam joints. It is found that initial cracks have a significant effect on the mechanical behavior of the joints. The cracks lead to a reduction up to 52% in the stiffness and a reduction up to 61% in the ductility ratio of the joints, respectively. In addition, an analytical method based on the yield theory and fracture mechanics was proposed to predict the load carrying capacity of the cracked glulam joints, and the proposed model was further verified by the experimental results.
Influence of cracks on the mechanical performance of dowel type glulam bolted joints
He, Minjuan (author) / Zhang, Jing (author) / Li, Zheng (author)
Construction and Building Materials ; 153 ; 445-458
2017-07-10
14 pages
Article (Journal)
Electronic Resource
English
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