A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Evaluation of Different CFRP Sandwich Deck Cores of Deployable Treadway Bridge Beam
The increasing rate of the world natural disasters increased the importance of the aftermath rapid mobility. This led to the necessity of using effective deployable bridge systems in terms of weight to capacity ratio. A composite bridge deck possesses a remarkable share of a bridge superstructure’s weight. The objective of this study is to produce CFRP webbed core sandwich decks that are effective in strength to areal weight ratio compared to the military Composite Assault Bridge (CAB) deck system. Another aim of the study is to achieve the target capacity performance while not using a special expensive matrix formulation. Two potential CFRP sandwich deck configurations are considered. The buckling capacity of the core webs is enhanced using different structural shapes of the CFRP construction. The common configuration of the cores consists of several honeycomb polyisocyanurate foam beams placed parallel to each other. The honeycomb foam beams are placed between two upper and lower carbon/epoxy skins to hold the whole core together. The experimental program included coupon testing to quantify the mechanical properties of the used carbon/epoxy material, a flatwise compression test, three-point loading test, and finally a microscopic analysis to estimate the fiber volume fraction of the manufactured webbed core samples and to verify the adequacy of the used manufactured technique and infusion strategy. The test results showed promising values of shear and compression strength to areal weight ratio at least by 1.5 times and 0.99 times, respectively, compared to the CAB deck system. The configuration that showed the promising results for ultimate strength capacities is chosen as a candidate for further parametric analysis and design with the deployable bridge tread-way.
Evaluation of Different CFRP Sandwich Deck Cores of Deployable Treadway Bridge Beam
The increasing rate of the world natural disasters increased the importance of the aftermath rapid mobility. This led to the necessity of using effective deployable bridge systems in terms of weight to capacity ratio. A composite bridge deck possesses a remarkable share of a bridge superstructure’s weight. The objective of this study is to produce CFRP webbed core sandwich decks that are effective in strength to areal weight ratio compared to the military Composite Assault Bridge (CAB) deck system. Another aim of the study is to achieve the target capacity performance while not using a special expensive matrix formulation. Two potential CFRP sandwich deck configurations are considered. The buckling capacity of the core webs is enhanced using different structural shapes of the CFRP construction. The common configuration of the cores consists of several honeycomb polyisocyanurate foam beams placed parallel to each other. The honeycomb foam beams are placed between two upper and lower carbon/epoxy skins to hold the whole core together. The experimental program included coupon testing to quantify the mechanical properties of the used carbon/epoxy material, a flatwise compression test, three-point loading test, and finally a microscopic analysis to estimate the fiber volume fraction of the manufactured webbed core samples and to verify the adequacy of the used manufactured technique and infusion strategy. The test results showed promising values of shear and compression strength to areal weight ratio at least by 1.5 times and 0.99 times, respectively, compared to the CAB deck system. The configuration that showed the promising results for ultimate strength capacities is chosen as a candidate for further parametric analysis and design with the deployable bridge tread-way.
Evaluation of Different CFRP Sandwich Deck Cores of Deployable Treadway Bridge Beam
Lecture Notes in Civil Engineering
Benmokrane, Brahim (editor) / Mohamed, Khaled (editor) / Farghaly, Ahmed (editor) / Mohamed, Hamdy (editor) / Osman, Ashraf (author) / Galal, Khaled (author)
8th International Conference on Advanced Composite Materials in Bridges and Structures ; Chapter: 54 ; 469-479
2022-09-27
11 pages
Article/Chapter (Book)
Electronic Resource
English
CFRP Strengthening evaluation of the N.S. da Guia bridge deck
| British Library Conference Proceedings | 2001
Polypropylene FRC Bridge Deck Slabs Transversely Prestressed with CFRP Tendons
| Online Contents | 1998
Long-Term Thermal Performance of a CFRP-Reinforced Bridge Deck
| British Library Conference Proceedings | 2008
Polypropylene FRC Bridge Deck Slabs Transversely Prestressed with CFRP Tendons
| British Library Online Contents | 1998