We studied the effect of salinity on nail-hold- ing power in wood construction. In saline solution, the holding power of nails was less than in purified water. With the increase of salt concentration, the surface and ...We studied the effect of salinity on nail-hold- ing power in wood construction. In saline solution, the holding power of nails was less than in purified water. With the increase of salt concentration, the surface and side nail- holding power of the wood specimens both declined, but the differences between salinity treatments were not sig- nificant. However, compared to the surface and side nail- holding power, the power on the edge was generally less and the difference was not obvious in different salt con- centrations. In the same salt concentration, with the extension of the processing cycle, the performance of holding power of nails showed a downward trend, expect the temporary rise in the middle.展开更多
Modern architecture and engineering increasingly favor timber structures due to their sustain-ability.Wooden nails,as eco-friendly alternatives to traditional metal connectors,offer promising potential for widespread ...Modern architecture and engineering increasingly favor timber structures due to their sustain-ability.Wooden nails,as eco-friendly alternatives to traditional metal connectors,offer promising potential for widespread adoption.This study analyzed the influence of various parameters on the shear performance of wooden nail connections through monotonic loading tests.Key factors examined included sheathing panel material(oriented strand board(OSB)and structural plywood(SP)),thickness(9.5 and 12 mm),as well as nail diameter(3.7 and 4.7 mm),spacing(50 and 100 mm),and cap configuration(with/without caps)on the mechanical behavior of the joints.An-alyzing load-displacement curves and mechanical parameters(ultimate load,stiffness,ductility)reveals several key findings:nail cap design has minimal impact on shear performance compared to other factors;joints with SP sheathing panel material show significantly higher shear-bearing capacity than those with OSB.Stiffness and ductility vary across specimen groups,with group O9-4.7(denoting OSB sheathing,9.5 mm thickness,and 4.7 mm nail diameter)having the high-est stiffness(1332 N/mm)and group O12-4.7(OSB sheathing,12 mm thickness,and 4.7 mm nail diameter)showing superior ductility(3.47).Additionally,a comprehensive finite element(FE)simulation of full-size wood-frame shear walls using OpenSees software provides insights into the influence of sheathing panel form,material properties,and thickness on lateral resistance performance.展开更多
The static test of two single light wood trusses and two girder trusses were carried out to explore theperformance enhancement effect of girder trusses and the influence of different connection types on the mechanical...The static test of two single light wood trusses and two girder trusses were carried out to explore theperformance enhancement effect of girder trusses and the influence of different connection types on the mechanicalbehavior, which was studied through the comparison of the test results of four trusses. It is found that the girder trussescan show better load-carrying capacity and anti-deforming ability compared with which simply increases the cross-sectionsize of the members. Because of the advantage of the connection materials and the non-fastening connection mechanism,the wood pin-connected truss has more ultimate bearing capacity which is 2.6 times of single truss, and better deformationresistance which is only 66.2% of the nailed one’s creep value.展开更多
基金financially supported by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)Jiangsu Overseas Research&Training Program for University Prominent Young&Middle-aged Teachers and Presidents
文摘We studied the effect of salinity on nail-hold- ing power in wood construction. In saline solution, the holding power of nails was less than in purified water. With the increase of salt concentration, the surface and side nail- holding power of the wood specimens both declined, but the differences between salinity treatments were not sig- nificant. However, compared to the surface and side nail- holding power, the power on the edge was generally less and the difference was not obvious in different salt con- centrations. In the same salt concentration, with the extension of the processing cycle, the performance of holding power of nails showed a downward trend, expect the temporary rise in the middle.
基金supported by the National Key Technology Research and Development Program for the 14th Five-year Plan of China(No.2024YFD2201204)Fujian Provincial Department of Housing and Urban-Rural Development Science and Technology Plan Project(No.2023-K-14)Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.KYCX22-1080).
文摘Modern architecture and engineering increasingly favor timber structures due to their sustain-ability.Wooden nails,as eco-friendly alternatives to traditional metal connectors,offer promising potential for widespread adoption.This study analyzed the influence of various parameters on the shear performance of wooden nail connections through monotonic loading tests.Key factors examined included sheathing panel material(oriented strand board(OSB)and structural plywood(SP)),thickness(9.5 and 12 mm),as well as nail diameter(3.7 and 4.7 mm),spacing(50 and 100 mm),and cap configuration(with/without caps)on the mechanical behavior of the joints.An-alyzing load-displacement curves and mechanical parameters(ultimate load,stiffness,ductility)reveals several key findings:nail cap design has minimal impact on shear performance compared to other factors;joints with SP sheathing panel material show significantly higher shear-bearing capacity than those with OSB.Stiffness and ductility vary across specimen groups,with group O9-4.7(denoting OSB sheathing,9.5 mm thickness,and 4.7 mm nail diameter)having the high-est stiffness(1332 N/mm)and group O12-4.7(OSB sheathing,12 mm thickness,and 4.7 mm nail diameter)showing superior ductility(3.47).Additionally,a comprehensive finite element(FE)simulation of full-size wood-frame shear walls using OpenSees software provides insights into the influence of sheathing panel form,material properties,and thickness on lateral resistance performance.
基金National Key Technology Research and Development Program for the 12th Fiveyear Plan of China(No.2015BAD14B05).
文摘The static test of two single light wood trusses and two girder trusses were carried out to explore theperformance enhancement effect of girder trusses and the influence of different connection types on the mechanicalbehavior, which was studied through the comparison of the test results of four trusses. It is found that the girder trussescan show better load-carrying capacity and anti-deforming ability compared with which simply increases the cross-sectionsize of the members. Because of the advantage of the connection materials and the non-fastening connection mechanism,the wood pin-connected truss has more ultimate bearing capacity which is 2.6 times of single truss, and better deformationresistance which is only 66.2% of the nailed one’s creep value.
