CN203373656U - Steel strand limiting device - Google Patents
Steel strand limiting device Download PDFInfo
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- CN203373656U CN203373656U CN201320307363.0U CN201320307363U CN203373656U CN 203373656 U CN203373656 U CN 203373656U CN 201320307363 U CN201320307363 U CN 201320307363U CN 203373656 U CN203373656 U CN 203373656U
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- steel
- hole
- steel strand
- crossbeam
- limiting device
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Abstract
The utility model discloses a steel strand limiting device and belongs to the field of constructional engineering. The steel strand limiting device comprises a beam and supporting plates. The beam is made of a rectangular steel plate. N through holes are formed in the middle of the beam, wherein N ranges from 15 to 30. Each through hole is round. The diameter of each through hole ranges from 1cm to 5cm. The distance between every two adjacent through holes ranges from 0.5cm to 3cm. The number of the supporting plates is four and the four supporting plates are distributed at the two ends of the beam. Each supporting plate is made of a right-angle triangular steel plate. According to the steel strand limiting device, the number of the through holes can be set according to the number of steel strands, the beam made of steel can effectively prevent the broken steel strands from flying and hurting people, operation is simple, and the area of the occupied land is small.
Description
Technical field
The invention belongs to building engineering field, more particularly, relate to a kind of steel strand stopping means.
Background technology
Prestressed concrete is through the development of over half a century progressively ripe along with the partial prestressing concept, and having broken through concrete can not tension and the constraint of cracking, has greatly expanded its range of application.At present, prestressed concrete has become the topmost a kind of structural meterials of domestic and abroad bridge engineering, the larger bridge for span, the prestressing steel used mostly is steel strand, but the disadvantages such as weight is large, easy-to-rust that these class steel still have, the stretching process that adds steel strand is to carry out the external of stretch-draw crossbeam, needs to accept the pulling force from hundred tons of the one-tenth of jack, very easily stress is concentrated and the accident such as burst apart, fracture, and construction workman is on every side produced to great life danger.For example: China Patent No. is 201220019698.8, open day is on October 3rd, 2012, the patent document of disclosed two dimension prestressing anti-fatigue girder, this invention consists of girder steel, prestress wire, arc cushion block, Flat gasket, prestressed high-strength bolt, nut, crimping anchor head, bearing stiffener and bearing.Be to apply the girder steel longitudinal prestressing at the web place of the nearly bottom flange of girder steel with two steel strand that are arranged symmetrically with, and, in the beam length range, be symmetrical in the web both sides, with suitable spacing, with high-strength bolt, girder steel is applied to transverse prestress.Under this two dimension prestressing effect, the girder steel bottom flange does not enter the tension stress state under Fatigue Load, under the shearing action that web produces in wheel load, the sloping section main stress bar does not enter tension state yet, thereby guarantees that the girder steel edge of a wing and web all can not produce fatigue failure.Thereby make the girder steel of being controlled by fatigue capacity can effectively utilize high-strength steel, economize on resources, improve safety, stop fatigue failure.
China Patent No. is 02235214.7, open day is on December 25th, 2002, the patent document of disclosed prestressed large-span solid abdomen steel beam structure system, this disclosure of the invention a kind of prestressed large-span solid abdomen steel beam structure system, the single span girder steel or the multispan continuous steel beam that comprise I-shaped or box section, and in the both sides of its steel beam web plate, be provided with two groups of symmetrical presstressed reinforcing steels along its length, these presstressed reinforcing steel both ends are anchored on the ground tackle be fixed on girder steel.Every group of presstressed reinforcing steel be a branch of more than, elongated or only at girder steel, bear the position that tensile stress is larger and arrange along girder steel, it can be parallel with steel beam web plate or be an angle with steel beam web plate.Presstressed reinforcing steel is bent and pass the preformed hole on frange plate, on the girder steel frange plate that it is corresponding with the presstressed reinforcing steel bending place and web, increases and is welded with the gusset of putting more energy into.The steel structure girder installation in position and fixing after, girder steel applied to prestressing force form prestressed large-span solid abdomen steel beam structure system by two groups of presstressed reinforcing steels being carried out to stretch-draw, can be used for steel building that beam span is larger or bridge etc.
Above-mentioned girder steel is applied very extensive in the manufacture process of the larger bridge of span; but it is in work progress; there is no to prevent the protective device flown up because fractureing of steel strand, steel strand are in the external tension of girder steel, and need the workman to operate to adjust the connecting portion of steel strand.If the stress excessive tensile strength that surpasses steel strand of moment applied, the accident that easily breaks, to workman's life generation threat.
Summary of the invention
the problem that 1, will solve
For the above-mentioned problems in the prior art, the invention provides a kind of steel strand stopping means, its crossbeam middle part has through hole, during use by steel strand through through hole, easy to operate, can effectively prevent from that post-rift steel strand from flying up to hurt sb.'s feelings.
2, technical scheme
In order to address the above problem, the technical solution adopted in the present invention is as follows.
A kind of steel strand stopping means, comprise crossbeam, gripper shoe, and described crossbeam is made by rectangular steel plates; Described crossbeam middle part has through hole; Described through hole has N; Described N equals 15-30; Described through hole is circular port, and its diameter is 1-5cm; The pitch of holes of described through hole is 0.5-3cm; Described gripper shoe has 4, is distributed in respectively the two ends of crossbeam; Described gripper shoe is made by the steel plate of right-angled triangle.
Further, described crossbeam is long is 100-150cm, and height is 15cm, and thickness is 2cm.
Further, described through hole has 22.
Further, described through-hole diameter is 3cm, and pitch of holes is 0.6cm.
3, beneficial effect
Adopt technical scheme provided by the invention, compare with existing technology, there is following beneficial effect:
(1) steel strand stopping means of the present invention, comprise crossbeam, gripper shoe, and described crossbeam is made by rectangular steel plates; Described crossbeam middle part has through hole, and the quantity of through hole can be set according to the quantity of steel strand, and the steel crossbeam can effectively limit the steel strand that break and fly up and hurt sb.'s feelings, easy and simple to handle, takes up an area space little;
(2) steel strand stopping means gripper shoe of the present invention arranges in the fixed cross beam bilateral symmetry, more firm in use.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1, crossbeam; 2, through hole; 3, gripper shoe.
The specific embodiment
For the ease of it will be appreciated by those skilled in the art that below in conjunction with accompanying drawing, invention is further described.
As shown in Figure 1, a kind of steel strand stopping means, comprise crossbeam 1, gripper shoe 3, and crossbeam 1 is made by rectangular steel plates; Crossbeam 1 middle part has through hole 2; Through hole 2 has 22; Through hole 2 is circular port, and its diameter is 3cm; The pitch of holes of through hole 2 is 0.6cm; Gripper shoe 3 has 4, is distributed in respectively the two ends of crossbeam 1; Gripper shoe 3 is made by the steel plate of right-angled triangle.
During use, first by steel wire bundle successively through the through hole 2 at crossbeam 1 middle part, then carry out stretch-draw with the jack pair steel strand, if certain root steel strand fracture utilizes the intact steel strand of remainder can prevent that it from flying up and hurts sb.'s feelings.
With embodiment 1, difference is that through hole 2 has 15, and its diameter is 5cm, and its pitch of holes is 3cm, and the length of crossbeam 1 is 150cm.
With embodiment 1, difference is that through hole 2 has 30, and its diameter is 1cm, and its pitch of holes is 0.5cm, and the length of crossbeam 1 is 120cm.
Above content is only to structure example of the present invention and explanation; affiliated those skilled in the art make various modifications to described specific embodiment or supplement or adopt similar mode to substitute; only otherwise depart from the design of invention or surmount this scope as defined in the claims, all should belong to protection scope of the present invention.
Claims (4)
1. a steel strand stopping means, it is characterized in that: comprise crossbeam (1), gripper shoe (3), described crossbeam (1) is made by rectangular steel plates; Described crossbeam (1) middle part has through hole (2); Described through hole (2) has N; Described N equals 15-30; Described through hole (2) is circular port, and its diameter is 1-5cm; The pitch of holes of described through hole (2) is 0.5-3cm; Described gripper shoe (3) has 4, is distributed in respectively the two ends of crossbeam (1); Described gripper shoe (3) is made by the steel plate of right-angled triangle.
2. steel strand stopping means according to claim 1, it is characterized in that: described crossbeam (1) is long is 100-150cm, and height is 15cm, and thickness is 2cm.
3. steel strand stopping means according to claim 1, it is characterized in that: described through hole (2) has 22.
4. steel strand stopping means according to claim 1, it is characterized in that: described through hole (2) diameter is 3cm, and pitch of holes is 0.6cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320307363.0U CN203373656U (en) | 2013-05-31 | 2013-05-31 | Steel strand limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320307363.0U CN203373656U (en) | 2013-05-31 | 2013-05-31 | Steel strand limiting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203373656U true CN203373656U (en) | 2014-01-01 |
Family
ID=49836201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320307363.0U Expired - Fee Related CN203373656U (en) | 2013-05-31 | 2013-05-31 | Steel strand limiting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203373656U (en) |
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2013
- 2013-05-31 CN CN201320307363.0U patent/CN203373656U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20140531 |