Numerical investigation of the uplift performance of prestressed fiber-reinforced polymer floating piles |
| |
| Authors: | Pengpeng Ni Yanlin Zhao |
| |
| Institution: | 1. Department of Civil Engineering, GeoEngineering Centre at Queen’s – RMC, Queen’s University, Kingston, ON, Canada;2. Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, College of Civil Engineering and Architecture, Guangxi University, Nanning, China |
| |
| Abstract: | Finite element analyses of prestressed fiber-reinforced polymer floating piles subjected to uplift force have been conducted in this paper. First, parameters of the modified BPE model (bond–slip model at the fiber-reinforced polymer–concrete interface) were calibrated using existing pullout testing data on fiber-reinforced polymer rebars embedded in concrete. Nonlinear spring elements were used in numerical modeling to characterize the bond–slip behavior at the fiber-reinforced polymer–concrete interface. A parametric study was performed to assess the influence of rebar diameter, fiber-reinforced polymer material, embedment length, and concrete strength on the mobilized bond stress. Upon the successful modeling of the pullout performance of fiber-reinforced polymer rebars in concrete, numerical models were developed to investigate the dependence of the uplift performance of floating piles on the prestress level, uplift force, fiber-reinforced polymer type, and compressive strength of concrete. |
| |
| Keywords: | Bond–slip characteristics floating piles FRP numerical modeling prestress uplift |
|
|
