We investigated the structural behavior and bearing capacity of system scaffolds.The research showed that the critical load of a system scaffold structure without diagonal braces is similar to that of a door-shaped st...We investigated the structural behavior and bearing capacity of system scaffolds.The research showed that the critical load of a system scaffold structure without diagonal braces is similar to that of a door-shaped steel scaffold structure.Joint stiffness between vertical props in system scaffolds can be defined based on a comparison between analytical and experimental results.When the number of scaffold stories increases,the critical loads of system scaffolds decrease.Diagonal braces markedly enhance the critical load of system scaffolds.The coupling joint position between vertical props should be kept away from story-to-story joints to prevent a reduction in critical loads.The critical load of a system scaffold decreases as the quantity of extended vertical props at the bottom of the structure increases.A large Christmas tree set up by system scaffolds under various loads was used as an example for analysis and to check the design of system scaffolds.展开更多
This paper describes fabrication of scaffolds for load-bearing applications, with primary consideration from the manufacturing perspective. An extrusion device, inspired by the FDM process, was used to create scaffold...This paper describes fabrication of scaffolds for load-bearing applications, with primary consideration from the manufacturing perspective. An extrusion device, inspired by the FDM process, was used to create scaffolds from a variety of different polymeric materials and mixtures. The effectiveness of these scaffolds to host cells for bone regeneration has been investigated. This ongoing work has generated significant insight into the future direction of research and the possibilities of developing scaffolds for medium/high load-bearing applications.展开更多
基金Project supported by the National Science Council,Taiwan(No. NSC 93-2211-E-224-002)the Service Center of Construction Tech-nology and Materials,National Yunlin University of Science and Technology,Taiwan(No.95-215)the Hong Kong Polytechnic University(Nos.PolyU 5115/07E and PolyU 5117/06E),Hong Kong,China
文摘We investigated the structural behavior and bearing capacity of system scaffolds.The research showed that the critical load of a system scaffold structure without diagonal braces is similar to that of a door-shaped steel scaffold structure.Joint stiffness between vertical props in system scaffolds can be defined based on a comparison between analytical and experimental results.When the number of scaffold stories increases,the critical loads of system scaffolds decrease.Diagonal braces markedly enhance the critical load of system scaffolds.The coupling joint position between vertical props should be kept away from story-to-story joints to prevent a reduction in critical loads.The critical load of a system scaffold decreases as the quantity of extended vertical props at the bottom of the structure increases.A large Christmas tree set up by system scaffolds under various loads was used as an example for analysis and to check the design of system scaffolds.
基金supported by A*STAR, under the title ‘A Composite Material Technology Platform for Bone Engineering’
文摘This paper describes fabrication of scaffolds for load-bearing applications, with primary consideration from the manufacturing perspective. An extrusion device, inspired by the FDM process, was used to create scaffolds from a variety of different polymeric materials and mixtures. The effectiveness of these scaffolds to host cells for bone regeneration has been investigated. This ongoing work has generated significant insight into the future direction of research and the possibilities of developing scaffolds for medium/high load-bearing applications.
