Numerical investigation of the uplift performance of prestressed fiber-reinforced polymer floating piles. Issue 6 (18th August 2017)

• Record Type: Journal Article
• Authors: Ni, Pengpeng; Mei, Guoxiong; Zhao, Yanlin
• Is Part Of: Marine georesources & geotechnology. Volume 35:Issue 6(2017)
• Page Start: 829
• Page End: 839
• Publication Date: 2017-08-18
• Subjects: Bond–slip characteristics -- floating piles -- FRP -- numerical modeling -- prestress -- uplift; Marine mineral resources -- Periodicals; 551.46
• DOI: 10.1080/1064119X.2016.1255688
• Languages: English
• ISSNs: 1064-119X

Abstract

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.