Abstract
This paper conducted a full-scale experiment on a PCCP with an inner diameter of 1400 mm and a length of 6000 mm. A finite element model was established on the basis of this experiment, and the influence of different recovery stresses, Fe-SMA bar diameters, and material types on the strengthening effect was investigated. The simulation results indicated a notable enhancement in the strengthening effect upon employing Fe-SMA bars with recovery stresses of 0 MPa, 175 MPa, 330 MPa, and 382 MPa, respectively. With the increased recovery stress, the micro-cracking pressure enhanced 33.8 %, 51.5 %, 72.1 %, and 80.9 % and the visible cracking pressure enhanced 12 %, 24.8 %, 31.6 %, and 33.1 %, respectively, compared to the non-strengthened PCCP. Finally, this paper proposed a design concept for a short-duration, micro excavation PCCP strengthening method based on the self-prestressing of the Fe-SMA.
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.
