Cable anchorage with bedding material
AssigneeVSL International AG
InventorsRachid Annan, Adrian Gnagi
Life of this patent
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AssigneeVSL International AG
InventorsRachid Annan, Adrian Gnagi
Estimating the term…
A cable anchorage anchors a cable, for example a stay cable having multiple strands (50), against a longitudinal tension force. The anchor block (11) of the anchorage includes multiple channels, through which the strands (50) are individually threaded. Once in position and tensioned, the space around the strands (50) in the anchor block (11) is injected with a liquid, such as a polyurethane, which subsequently sets to form a tough elastic bedding material (51) within the anchor block (11). The elastic bedding material (51) has a durometer at 23° C. in the range 10 to 70 Shore, so as to form bedding cushion extending substantially around the strand (50) in the strand-channel (6) along a bedding region (54) of strand-channel (6), the bedding cushion reducing the bending stresses in the strand (50) by absorbing bending stresses along the bedding region (54).
A method of anchoring a cable comprising individual strands subject to static and dynamic deflection in a cable anchorage, said strand defining a free end portion and a free-running portion, the cable anchorage comprising an anchor block, individual strand channels extending at least through said anchor block, said individual strand channels extending between an anchoring end and an exit end, and individual strand-anchoring conical wedges at said anchoring, end of the anchor block of each strand channel for gripping said free end portion of the strand, the cable anchorage transferring an axial tension load in the strand to the anchor block, the strand exiting from the cable anchorage at said exit end in the direction of said free-running portion of the strand, the length of the strand channel being less than 10 times the smallest diameter of the strand channel, the method comprising:
A method of anchoring a cable comprising individual strands subject to static and dynamic deflection in a cable anchorage, said strand defining a free end portion and a free-running portion, the cable anchorage comprising an anchor block, individual strand channels extending at least through said anchor block, said individual strand channels extending between an anchoring end and an exit end, and individual strand-anchoring conical wedges at said anchoring end of the anchor block of each strand channel for gripping said free end portion oldie strand, the cable anchorage transferring an axial tension load in the strand to the anchor block, the strand exiting from the cable anchorage at said exit end in the direction of said free-running portion of the strand, the length of the strand channel being less than 10 times the smallest diameter of the strand channel, the method comprising:
Dependencies are inferred from the claim text.