Study on elastic deformation calculation method of a composite-metal hybrid assembling stringed truss bridge

Abstract

A composite-metal hybrid assembling stringed truss bridge which based on pre-tightened tooth connection can make full use of the strength of the FRP fiber in the direction of the fiber, and is of higher bearing capacity than the FRP truss bridges with traditional adhesive or bolt connection. However, whether the calculation method of FRP truss bridge with traditional bondingor bolt connection is suitable for this new type of bridge needs to be researched because of the difference on the structural form and connection mode. In order to obtain the suitable method of this kind of bridge, a new method for calculating live load deformation which consider the influence of end of the steel bar sleeve of rod stiffness was established in this paper; the deformation experiment of truss bridge was carried out. The experiment and calculation results show: compared with the calculation method of the live load deformation of the traditional FRP truss bridge, the calculation method of live load deformation considering the effect of the steel sleeve on the end of the rod is in good agreement with the live load deformation obtained by the experiment; the calculation method of inelastic deflection has also been verified by the experimental results.

A rapid CAE-based design method for modular hybrid truss structures

“…Hybrid lightweight design combines several different materials into one structure, as described by Zhu, Li & Childs (2018) for aviation, by Goede et al (2009) for automotive, by Zeng et al (2019) for civil engineering and by Klein (2013) in general. The material is used where properties such as stiffness and strength best meet the application-specific needs.…”

“…(2009) for automotive, by Zeng et al. (2019) for civil engineering and by Klein (2013) in general. The material is used where properties such as stiffness and strength best meet the application-specific needs.…”

Effect of transverse clamping force on the tensile behavior of a novel pultruded carbon fiber–reinforced polymer joint: Fatigue test

“…In this way, certain transverse compressive stresses are exerted onto the FRP tooth plate, further improve the shear strength of composite material, and increase the friction stress on the contact surface; therefore, the PTST joint can have a high ultimate bearing capacity (UBC; Deng et al, 2013;Gao et al, 2018;Liu et al, 2015;Zhao et al, 2015). These studies and applications have shown that the PTST joint can be a viable technique for connecting bridge decks and bridge girders and it has been applied in FRP bridge structures (Yan et al, 2018;Zeng et al, 2019;Zhang et al, 2014Zhang et al, , 2017Zhang et al, , 2019. However, concerns about the fatigue and longterm durability of the FRP PTST joints have hindered their widespread application.…”