01593571

Component

This study is aimed at exploring a new ductile and corrosion-free design concept of confined concrete-filled polyvinyl-chloride tubular (CCFPT) columns. Confinement was provided with the use of a polyvinyl-chloride (PVC) tube and fiber-reinforced polymer (FRP) wrappings or FRP with a sandwiched layer of foam to enhance impact energy reduction due to potential FRP rupture and PVC fracture. Axial and flexural behavior of CCFPT columns was investigated with compressive and flexural tests, respectively, and compared with those of their corresponding concrete-filled polyvinyl-chloride tubular (CFPT) and FRP-wrapped (FW) columns. Test results obtained from 152×305 mm (6×12 in.) stub columns under axial loads and 152×1524 mm (6×60 in.) flexural beams under four-point loads indicated that the CCFPT columns can significantly enhance strength over the CFPT columns and enhance ductility over the FW columns. The transverse confining pressure from FRP wrapping and the interface property between the FRP and PVC proved critical in CCFPT design. Furthermore, the idea of introducing a cushioning foam layer between FRP layers and PVC to lessen the brittleness of FRP rupture in seismic regions proved effective.

This paper was sponsored by TRB committee AFF80 Standing Committee on Structural Fiber Reinforced Polymers. Alternate title: Concrete-Filled FRP-PVC Tubular Columns for Ductile and Durable Bridge Behavior Under Earthquake Loads

01584066

16-5691

English

17p

2016

Transportation Research Board 95th Annual Meeting

Digital/other

Figures; References; Tables

Columns; Durability; Earthquake resistant design; Fiber reinforced polymers; Loads; Polyvinyl chloride; Tubular structures

Seismic loads

Bridges and other structures; Design; Highways; Materials

Transportation Research Board Annual Meeting 2016 Paper #16-5691

TRIS, TRB, ATRI

Jan 12 2016 6:29PM