Hybrid Bridge Structures Made of Frp Composite and Concrete

Abstract

A b s t r a c tDespite many advantages over the conventional construction materials, the contemporary development of FRP composites in bridge engineering is limited due to high initial cost, low stiffness (in case of glass fibers) and sudden composite failure mode. In order to reduce the given limitations, mixed (hybrid) solutions connecting the FRP composites and conventional construction materials, including concrete, have been tested in many countries for 20 years. Shaping the hybrid structures based on the attributes of particular materials, aims to increase stiffness and reduce cost without losing the carrying capacity, lightness and easiness of bridges that includes such hybrid girders, and to avoid the sudden dangerous failure mode. In the following article, the authors described examples of hybrid road bridges made of FRP composite and concrete within the time of 20 years and presented the first Polish hybrid FRP-concrete road bridge. Also, the directions of further research, necessary to spread these innovative, advanced and sustainable bridge structures were indicated.

Fiber reinforced polymer composites in bridge industry

“…In addition, hybrid girders are made in the form of concrete-filled FRP tubes (CFFT) [13,[88][89][90][91] and stay-in-place (SIP) formworks [43]. Different shapes of FRP girders are shown in Fig.…”

Evaluating Flexural Strength of RC Beams Strengthened by CFRP using Different Analytical Models

“…During the past three decades, fiber-reinforced polymer (FRP) has been an increasing interest for using in the strengthening and retrofitting of structural elements. Because of its desired properties such as high tensile strength, low weight, and corrosion resistance [1][2][3]. Carbon fiber reinforced polymer (CFRP) as externally bonded (EB) is one of the most used techniques to improve the stiffness, strength and structural performance of reinforced concrete (RC) elements.…”

A Review of Fibre Reinforced Polymer Bridges

“…Its top and bottom flanges are made of hybrid carbon and glass fibre laminates. The girder webs consist of sandwich panels having glass fibre skins and a polyurethane core[27,65,67].…”