Advanced Steel Construction

Vol. 4, No. 3, pp. 184-197 (2008)


HYBRID COMPOSITE CABLE WITH STEEL COMPONENT AS A STRUCTURAL ELEMENT

 

D. Serdjuks 1,* and K. Rocens 2

1 Assistant Professor, Institute of Structural Engineering and Reconstruction,

Riga Technical University, Latvia

2 Professor, Institute of Structural Engineering and Reconstruction,

Riga Technical University, Latvia

* (Corresponding author: E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.)

Received: 26 September 2006; Revised: 24 August 2007; Accepted: 4 September 2007

 

DOI: 10.18057/IJASC.2008.4.3.2

 

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ABSTRACT

  High strength composite cables with large specific strength and made of base of materials using carbon fiber reinforced plastics (CFRP), glass fiber reinforced plastics (GFRP) and Vectran, are widely used in construction industry. However, the use of a steel component enables the small elongation of the cable to be moderately increased, the brittleness decreased and the scope of application of high strength composite cables expanded respectively. Cable made of steel in combination with other materials such as CFRP, GFRP and Vectran, was studied and reported in this paper. Volumetric fraction of steel was within the limits of 0.1 to 0.7. The inter-dependent relationship of external pressure per unit surface area of the distributed layer (due to the pressure of steel wire strands) of hybrid composite cable on the axial force and angle of steel wire strands twisting was estimated by engineering method of calculations. Tangential and radial stresses of the distributed layer and core of hybrid composite cable were obtained. It was shown that the angle of steel wire strands twisting should not exceed 20° in the case when the distributed layer and core are made of GFRP and CFRP respectively. Relationship between materials and their content in hybrid composite cables with the steel component was considered. Hybrid composite cables with the steel component were considered as materials of several groups of cables in a prestressed saddle-shaped cable roof. Opportunity to decrease the displacements of composite saddle-shaped cable roof by the use of hybrid composite cables with steel component in several groups of cables was investigated and reported.

 

KEYWORDS

Steel wire strands, fiber reinforced plastics, cable net, vertical displacements


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