Ultrahigh-strength prestressed steel wire

A prestressed steel wire, ultra-high strength technology, applied in the direction of building reinforcements, structural elements, building components, etc., can solve the problems of time-consuming connection and disassembly, loss of strength, etc.

Inactive Publication Date: 2014-03-12
SILVERY DRAGON PRESTRESSED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still defects such as loss of strength when the thread at the end of the steel wire is extruded, and time-consuming disassembly of the connection

Method used

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  • Ultrahigh-strength prestressed steel wire
  • Ultrahigh-strength prestressed steel wire
  • Ultrahigh-strength prestressed steel wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 , figure 2 As shown, the present invention includes a 2.3m-long spiral rib steel wire with a diameter of 8mm, one end of the steel wire has an external thread, the length of the external thread is 10mm, and the external thread is 2 threads, each The widths of the threads are equal, the spacing is equal, and the axial included angle is consistent with the radial rise angle. The pitch P of the external threads, that is, the axial distance between each thread is 0.5 mm. The distance between the middle diameter of the external thread and the outer diameter or inner diameter is 0.2 mm. The tooth form of the external thread is a triangular thread.

Embodiment 2

[0022] Such as figure 1 , image 3 As shown, the present invention includes a 3m-long spiral rib steel wire with a diameter of 30mm, one or both ends of the steel wire are provided with external threads, the length of the external thread is 65mm, and the external thread is 4 threads , The width of each thread is equal, the spacing is equal, and the axial angle is the same as the radial angle. The pitch P of the external thread is 3 mm. The distance between the middle diameter of the external thread and the outer diameter or inner diameter is 2.5 mm. The tooth profile of the external thread is a trapezoidal thread.

Embodiment 3

[0024] Such as figure 1 , Figure 4 As shown, the present invention includes a 2.5m long spiral rib steel wire with a diameter of 20mm, one or both ends of the steel wire are provided with external threads, the length of the external thread is 40mm, and the external thread is 3 threads. For thread, the width of each thread is equal, the spacing is equal, and the axial included angle is consistent with the radial rise angle. The pitch P of the external thread is 2 mm. The distance between the middle diameter of the external thread and the outer diameter or inner diameter is 1.5 mm. The tooth profile of the external thread is an R arc thread.

[0025] This technical solution adopts the special process of multiple threads to reduce the strength loss in the threaded area, improve the durability of concrete products, especially the high-speed rail ballastless track slab, increase the lead of the thread, improve the efficiency of installation and disassembly, and upgrade the existing...

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Abstract

The invention provides an ultrahigh-strength prestressed steel wire. The ultrahigh-strength prestressed steel wire is a spiral-rib steel wire with the length of 2.3-3m and the diameter of 8-30mm, wherein external threads are formed in one or both ends of the steel wire; the length of the external threads is 10-65mm; the external threads comprise 2-4 thread lines; all thread lines have equal width and equal spacing; and the axial angle is consistent to the radial rise angle. The ultrahigh-strength prestressed steel wire has the advantages as follows: a special multi-thread process is adopted, so that the strength loss in a thread area is reduced, the durability of a concrete product, especially a ballastless high-speed rail plate, is improved, and the lead of the thread is increased; the installing and detaching efficiency is improved; applied mechanical properties of the existing prestressed steel wire are improved.

Description

Technical field [0001] The invention relates to an ultra-high-strength prestressed steel wire. Background technique [0002] The high-strength low-relaxation spiral rib prestressed steel wire is an excellent metal product made of high-carbon microalloyed steel. Its ultra-high performance has been widely recognized by the concrete construction industry. The Zhengzhou-Xuzhou passenger train is the world's first railway with a design speed of 350 km / h and adopts a new track pattern. Its ballastless track uses high-strength low-relaxation spiral rib prestressed steel wire to improve the durability of the track slab , The technical measures of fixed length of steel wire and anchor plate are adopted to enhance the anchorage and reduce the transmission length. However, there are still defects in that the strength of the thread at the end of the steel wire is lost during extrusion, and the connection and disassembly are time-consuming. Summary of the invention [0003] The purpose of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C5/03E04C5/08
Inventor 谢铁桥谢志峰谢志安张玉光王培艾铁岭闫崇健
Owner SILVERY DRAGON PRESTRESSED MATERIALS CO LTD
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