Steel strand external stay cable structure system for wind tower and manufacturing and installation method thereof
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A technology of steel strand and cable structure, which is applied in basic structure engineering, installation/support configuration of wind turbines, towers, etc., to achieve the effect of flexible scheme adjustment, reduction of construction cost, and guarantee of construction quality
Pending Publication Date: 2019-09-20
LIUZHOU OVM MASCH CO LTD
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[0003] At present, the prestressed wind tower structure is divided into internal prestressed concrete towers and external prestressed concrete towers. The construction cost of wind power towers has become the focus of investment companies. How to effectively and quickly build towers to form efficient construction Quality has become the joint point of cost control; among them, the advantages of external prestressed concrete towers have been favored abroad, mainly reflected in the aspects of convenient installation, low cost and convenient maintenance; but for multi-section spliced super high As far as the concrete tower structure is concerned, there will be a structural inflection point at the top of the tower, and the prestressed cables installed in the tower have an installation oblique angle and may interfere with the tower wall. Therefore, how to construct in a small space and ensure the tension The prestress transmission and anti-seismic aspects of the cable and tower foundation are technical problems that must be solved by those skilled in the art
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Embodiment 1
[0066] A steel strand external cable structure system for wind towers:
[0067] Such as figure 1 As shown, the external cable structure system of the steel strand for the wind tower includes a combined anchorage structure system cable, an isolation and anti-wear device 3, a restraint shock absorbing device 4 and a foundation conversion bracket assembly 5;
[0068] The steel strand cable 2 is a combined anchoring structure system, which is composed of a multi-strand steel strand cable body 21, an upper end anchor assembly 1 and a tension end anchor assembly 6, and the upper end anchor assembly 1 is an integral anchor Head, tension end anchor assembly 6 is a single loose cable clamping and anchoring structure;
[0069] The upper end anchor assembly 1 includes a nut 11 and an extruded anchor head 12, and the extruded anchor head has external threads (see figure 2 );
[0070] The tension end anchor assembly 6 includes a sealing cylinder 61, an anchor plate 62, a clip 63 and a ...
Embodiment 2
[0077] A method for manufacturing and installing a steel strand external stay cable structure system for a wind tower, which is a method for producing and installing a steel strand external stay cable structure system for a wind tower described in Embodiment 1, and it includes the following steps:
[0078] A. Make the finished steel strand cable 2 whose upper end anchorage component 1 is an integral extruded anchor head:
[0079] A1. Making the integral extruded anchor head:
[0080] According to the designed cable length, the steel strand body is tailored, the steel strand body 21 and the extruded anchor head 12 are extruded and wrapped by special extrusion equipment, and after the upper anchor assembly 1 is manufactured, the anchor head is threaded. (Such as figure 2 shown);
[0081] A2, carry out hypertension to steel strand;
[0082] A3. Install the isolation and anti-wear device:
[0083] After stretching, wear-resistant sleeve 31, spacer sleeve 32, and heat shrinkabl...
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Abstract
The utility model relates to a steel strand external stay cable structure system for a wind tower. The steel strand external stay cable structure system comprises a steel strand stay cable, an isolation and anti-wear device, a constraining and shock absorption device and a basic conversion bracket assembly; the isolation and anti-wear device comprises an anti-wear sleeve pipe, isolation sleeves and a thermal shrinkage sleeve, the anti-wear sleeve pipe sleeves the stay cable, and the isolation sleeves are arranged at several points of an excircle steel strand and are fixed by the thermal shrinkage sleeve; the constraining and shock absorption device comprises two half clamping plates and a hinged damping rod; in an installation state, the basic conversion bracket assembly is pre-buried and poured in tower foundation concrete, and the upper end of the steel strand stay cable is locked at a platform base plate at the top of the tower by an upper anchor assembly, and the tail end of the cable body of the steel strand stay cable end penetrates to a support cylinder hole of the basic conversion bracket assembly and is anchored by a tension end anchor assembly; the isolation and anti-wear device is positioned at a tower top corner structure; and the constraining and shock absorption device is installed at a laying-off position of a tower barrel and the steel strand stay cable. The steel strand external stay cable structure system is conducive to the installation and construction of a tower top narrow space structure, seismic resistance is good, the quality of the stay cable construction is ensured, and the service life is prolonged.
Description
technical field [0001] The invention relates to a prestressed cable for a wind tower, in particular to a steel strand external cable structure system for a wind tower and a manufacturing and installing method thereof. Background technique [0002] In recent years, with the vigorous development of the wind power industry, related wind power supporting technologies have also been improved. The construction of wind towers for wind power generation has become a key technology for increasing power generation rates. At present, the prestressing technology used in ultra-high concrete wind towers has obtained attention and use. [0003] At present, the prestressed wind tower structure is divided into internal prestressed concrete towers and external prestressed concrete towers. The construction cost of wind power towers has become the focus of investment companies. How to effectively and quickly build towers to form efficient construction Quality has become the joint point of cost ...
Claims
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Application Information
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