Abstract
The use of pultruded glass fibre reinforced polymer has gained wide acceptance in civil engineering due to their excellent physical and mechanical characteristics, like low weight, high strength and durability in harsh environment. However, duo to the pultrusion process, pultruded GFRP sections are orthotropic and face a critical issuse of web crippling. This paper presents an experimental study on the web crippling behavior of pultruded GFRP channel sections under transverse bearing load. A total of twenty specimens were tested under two loading conditions, namely end-two-flanges (ETF) and interior-two-flanges (ITF). Five different bearing plates with length ranging from 20 mm to 200 mm were chosen to apply the transverse concentrated loading. It is observed taht all specimens initially cracked at the web-falnge junction. The experimental result also confirmed that both the web crippling capacities and stiffness increased with the increase of the bearing length. And the web crippling capacities are improved when the bearing plates are moved from the end to the middle of the specimen. The strain distributions at the web-flange junction obtained by DIC indicated that both the materials underneath the bearing plates and that near the bearing plates engaged in carrying the transverse bearing load.
Highlights
Pultruded glass fiber reinforced polymer (GFRP) are seeing an increasing application in civil engineering due to their excellent physical and mechanical properties, like low weight, high strength and resistance to harsh environment [1,2]
The highly orthotropic causes pultruded GFRP facing a critical issue of premature web crippling failure under transverse bearing load
In order to break the hinders of the widespread of pultruded GFRP sections in the practical civil constructions, many studies [3,4] were conducted on the web crippling behavior of pultruded GFRP sections
Summary
Pultruded glass fiber reinforced polymer (GFRP) are seeing an increasing application in civil engineering due to their excellent physical and mechanical properties, like low weight, high strength and resistance to harsh environment [1,2]. Because of their inherent pultrusion process, pultruded GFRP sections exhibited much lower mechanical properties in the transverse direction than that in the pultrusion direction. This paper presents an experimental study on the web crippling behavior of pultruded GFRP channel sections. One pultruded GFRP channel section was chosen for the web crippling test. The strain distributions at the web calculated by digital image correlation (DIC) were used to reveal the stress transferring mechanism at the crack initiation
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
