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Prestressed Reinforcement Grounding Device for Concrete Members

A technology of prestressed steel bar and grounding device, which is applied in the direction of connecting contact materials, roads, buildings, etc., can solve the problem that the prestressed steel bar cannot be grounded, and achieve the effect of eliminating stray current

Active Publication Date: 2019-02-26
杭州银龙唐普徕科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the above defects, the present invention proposes a prestressed steel grounding device for concrete components, which is used for railway concrete components to eliminate stray currents, and can solve the problem that prestressed steel bars in concrete components cannot be grounded

Method used

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  • Prestressed Reinforcement Grounding Device for Concrete Members
  • Prestressed Reinforcement Grounding Device for Concrete Members
  • Prestressed Reinforcement Grounding Device for Concrete Members

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] like figure 2 As shown, for the pre-tensioned prestressed steel bar 1 that is usually not provided with anchors, a section of thread 4 is provided at both ends of the prestressed steel bar 1, and a metal anchor 2 is placed on the thread 4, and the metal anchor 2 is connected to the prestressed steel bar 1 and After the grounding steel bar 3 and the tensioning of the prestressed steel bar are completed, the prestressed concrete member 7 is poured.

[0036] A non-prestressed grounding steel bar 3 is arranged perpendicular to each prestressed steel bar 1 at its end, close to the metal anchor 2, and welded together with the metal anchor 2 through the welding point 5 (or through Fixture connection), thereby solving the problem that the steel bar cannot be welded in the tension zone of the prestressed steel bar 1.

[0037] Add graphite powder and other materials within the close contact range between the anchor and the thread to improve the electrical conductivity between th...

Embodiment 2

[0040] like figure 2 As shown, for the prestressed steel bar 1 with anchors 2 at both ends, it is made by post-tensioning method, and the prestressed concrete member 7 is poured first and the pipe hole is reserved. After the prestressed steel bar 1 is installed, the grounding steel bar 3 passes through the welding point 5 is welded to the metal anchor 2, so that it is indirectly connected to the prestressed steel bar 1, the specific connection is the same as in embodiment 1, and then filled with grout.

[0041] Add graphite powder and other materials within the close contact range between the anchor and the thread to improve the electrical conductivity between the anchor and the thread.

[0042] In this embodiment, the strength of the anchor piece needs to be increased during the post-tensioning process, so as to ensure that the strength of the grounding steel bar 3 can still meet the tension requirement of the steel bar when it is welded on it.

Embodiment 3

[0044] like image 3 As shown, the prestressed steel bar 1 is produced by pre-tensioning or post-tensioning, and the end of the prestressed steel bar 1 is provided with a thread 4 outside the tensile zone.

[0045] In the pre-tensioning method, the prestressed steel bar 1 is stretched first, and the anchor piece 2 is sleeved on the thread 4, but the grounding steel bar 3 is directly welded on the thread 4, and finally the prestressed concrete member 7 is poured.

[0046] In the post-tensioning method, the concrete is poured first, and then the prestressed steel bar 1 is stretched. The anchor piece 2 is socketed on the thread 4, but the grounding steel bar 3 is directly welded on the thread 4, and finally the grouting is filled.

[0047] Specifically, a non-prestressed grounding steel bar 3 is horizontally arranged at the end of each prestressed steel bar 1 perpendicular to the prestressed steel bar, and is welded together at the intersection of the anchor 2 outside, which also...

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Abstract

The invention discloses a prestressed bar grounding device for a concrete member; anchors and grounding rebars are mounted at ends of a prestressed rebar, each end of the prestressed rebar is provided with a screw thread, the anchors are connected to the screw thread in sleeving manner, the grounding rebars are connected to metal ground terminals embedded in the concrete member. The anchors are made of metal and are fixedly connected with the grounding rebars by welding or fixtures, or the grounding rebars are welded to screw threads, outside stressed areas of the prestressed rebar. The problem that prestressed rebars in a concrete tie cannot be grounded is solved, and stray current in the prestressed rebars is eliminated.

Description

technical field [0001] The invention generally relates to concrete structures in the field of railways, in particular to a grounding device for prestressed steel bars of concrete components. Background technique [0002] Due to the advantages of good mechanical properties and anti-cracking, prestressed structures are widely used in the field of reinforced concrete structures. [0003] Concrete sleepers, prefabricated track slabs and various special sleepers are widely used in the railway field and are the main forms of railway track structures. [0004] Concrete sleepers are mainly used in ballasted tracks of railways, and pre-tensioned prestressed structures are generally used; prefabricated track slabs are generally used in railway ballastless tracks, and are made by pre-tensioning or post-tensioning; special types of sleepers such as ladder sleepers, longitudinal sleepers , mainly used in railway ballastless track, using pretensioning prestressed structure. [0005] Gen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B2/00H01R4/66
CPCE01B2/00H01R4/66
Inventor 许正洪陈梦阳
Owner 杭州银龙唐普徕科技有限公司
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