The Application of Carbon Fibre Reinforced Polymer (CFRP) Cables in Civil Engineering Structures (original) (raw)

Dynamic behaviour of a cable stayed bridge using CFRP cables

The traditional materials were unable to respond the need with the developing technology and accelerated the search for the development of new materials. For this purpose, the composite materials were started developed during World War II and this development has continued rapidly since then. Nowadays, composite materials are commonly preferred in many engineering structures because of their advantages when these materials are compared to traditional ones. Fiber reinforced polymer (FRP) is a class of advanced composite materials used in civil engineering recently. FRP regarded as a perfect material to construct large-span structures because of its favourable properties like high strength, high rigidity, low weight, corrosion resistance, low maintenance cost and aesthetic appearance. Thus, the dynamic behaviour of this kind of structures under the earthquake being started to be chosen frequently in civil engineering must be determined accurately. In this study, it is aimed to determi...

Static and dynamic performance of CFRP cables in longspancablestayed bridges

Carbon Fiber-reinforced polymer (CFRP)cables are advantageous over steel cables such as their lightweight, high ultimate tension, and relatively lower elastic modulus. In this research, the static and dynamic behaviorof a 1500m central span cable-stayed bridge with CFRP and steel cables is analyzed and compared using a numerical finite element model.The geometric non-linearity was analyzed for the dead load, live load, and temperature load case.The live load includes the pedestrian and primary vehicle load according to BS 5400:2 on the steel deck. The results indicate that the cable tension for CFRP is less than Steel cables, however, the vertical displacement of the girder is higher in CFRP than in steel cables. The temperature load effect of the steel cables in the girder is greater than CFRP cables because of the relatively high linear thermal expansionof steel. In the modal analysis, the lateral bending frequency of CFRP is lower than steel but the vertical vibration and torsional frequency mode of the CFRP cable is relatively high. In conclusion, the static and dynamic response indicates that CFRP cables is an optimized substitute for steel stays and can be applied in longspan bridges.

Carbon Fibre-Reinforced Polymer (CFRP) Composites in Civil Engineering Application—A Comprehensive Review

Buildings

In civil engineering, carbon fibre-reinforced polymer (CFRP) composites have emerged as a promising alternative to conventional materials. The article provides a comprehensive overview of the application of CFRP composites in various building structural elements and their characteristics and properties, such as their fatigue and corrosion resistance, stiffness and high strength, and incorporation of temperature factors. The advantages and disadvantages of CFRP composites and the current trends and prospects for CFRP composites in the construction sector are discussed. In addition, the article compares various studies on CFRP composites to shed light on their performance and potential limitations. This paper aims to provide useful information to researchers and practitioners interested in using CFRP composites in civil engineering applications. In addition, the article discusses emerging materials in CFRP, such as nanostructured carbon fibres, hybrid fibre reinforcement, and self-sen...

Application of CFRP Cables in Super Long Span Cable Supported Bridges - A feasibility study

2014

Although engineers have designed bridges with main spans of almost 2 000 meters, there is still a desire of overbridging longer crossings. The cable supported bridges has the highest potential in terms of span lengths, but the use of conventional steel cables are impeding further development. The self-weight of the steel cables ultimately becomes the governing factor, why research in lightweight cable materials is essential for reaching longer spans. Carbon fibre reinforced polymers (CFRP) are the most promising alternative for substituting steel in the cables, and the application of CFRP cables in super long span bridges 1 is analysed in this thesis. The static and dynamic performance of CFRP cables are reviewed and compared with steel cables, both for cable-stayed and suspension bridges. Numerical analyses are, however, only performed for the application in suspension bridges. The aerodynamic analysis is based on a semiempirical model for evaluating the critical flutter velocity, ...

APPLICATIONS OF FIBRE REINFORCED COMPOSITE POLYMER IN CONSTRUCTIONS

1 (MTECH (SE) student department of civil engineering Usha Rama college of engineering and technology) 2 (ASSISTANT PROFESSOR department of civil engineering Usha Rama college of engineering and technology) 3 (PROFESSOR & HEAD OF THE Department of civil engineering Usha Rama college of engineering and technology) ABSTRACT: fibrere in forced polymer composites, developed primarily for the aerospace and defence industries, are a class of materials with great potential to use in civil infrastructure. Since the construction of the first all-composite bridge superstructure in Miyun, China, in 1982, they have been gradually gaining acceptance from civil engineers as a new construction material. During these 30 years, their proved to be useful in a few areas of application: mostly in form of sheets and strips for strengthening existing bridge structures, and to some extent, as reinforcing bars substituting steel as concrete reinforcement. Also, a number of constructions have built, in which FRP composites replaced traditional materials for structural elements (girders, bridge decks, stay cables). Among these constructions there is a relatively big amount of hybrid bridge structures, where only a part of the superstructure is made of FRP composites, and a much smaller amount of all-composite bridge structures, with superstructures made exclusively of this material. The purpose of this paper is to present the state of the art in the use of FRP composites in bridge engineering with the focus on hybrid and all-composite structures. Firstly, the paper will present the basic information about FRP composites, including the definition, description of the components, mechanical properties and general areas of application. Then, it will focus on FRP composites as the material of which structural elements are made, describing manufacturing processes relevant to civil engineering applications, assortment of structural profiles, cables, tendons and bridge deck systems, presenting the problem of codes and design guidelines that refer to the use FRP composites as the construction material, and methods of joining structural elements. Thirdly, it will compare the properties of FRP composites with those of traditional materials. Finally, there are presented some examples of hybrid and all composite bridge structures and a list of 355 constructions made of this material around the world, with basic data and references providing more information.

Fiber-Reinforced Polymer Composites in the Construction of Bridges: Opportunities, Problems and Challenges

Fibers

In this review, we discuss the basic issues related to the use of FRP (fiber-reinforced polymer) composites in bridge construction. This modern material is presented in detail in terms of the possibility of application in engineering structures. A general historical outline of the use and development of modern structural materials, such as steel and concrete, is included to introduce composites as a novel material in engineering, and the most important features and advantages of polymers as a construction material are characterized. We also compare FRP to basic structural materials, such as steel and concrete, which enables estimation of the effectiveness of using of FRP polymers as structural material in different applications. The first bridges made of FRP composites are presented and analyzed in terms of applied technological solutions. Examples of structural solutions for deck slabs, girders and other deck elements made of FRP composites are discussed. Particular attention is pa...