Hybrid pipe for stay cable and its manufacturing method
AssigneeVSL International AG
InventorsRachid Annan, Andreas Schwarz
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Abstract
The present invention relates to a hybrid pipe (1) for stay cable, comprising a tubular shaped wall (15), the wall having an internal face (18) and an external face (19). The hybrid pipe (1) further comprises at least one reinforcing element (12, 22), the reinforcing element (12, 22) being provided at the wall (15) to form the hybrid pipe (1) such that the hybrid pipe (1) has a higher mechanical properties/resistance such as higher buckling resistance, higher tensile strength and/or a lower thermal dilatation than the wall (15) itself. The present invention also relates to a cable-stayed system comprising such a hybrid pipe (1) and a method of manufacturing such a hybrid pipe (1).
Claims20
A hybrid pipe for stay cable, comprising a tubular shaped wall having an internal face and an external face, at least one reinforcing element provided at the wall to form the hybrid pipe such that the hybrid pipe has a higher mechanical resistance and/or a lower thermal dilatation coefficient than the wall itself, wherein a plurality of openings are provided on the wall corresponding to the at least one reinforcing element, and wherein the plurality of openings is arranged in such a way that the plurality of openings is encased at least on one side by the at least one reinforcing element.
A method of manufacturing a hybrid pipe for stay cable, comprising the steps of:
- a. connecting a plurality of pipe sections to obtain a required length of pipe having a tubular shaped wall,
- b. connecting one or more reinforcing elements on the wall, c. forming at least one channel at the wall with the one or more reinforcing elements and introducing high strength tensile elements into said channel.
Dependencies are inferred from the claim text.