CN202644401U - Omnipotent prestress stretch-draw connecting structure for finish-rolling screw-thread steel - Google Patents
Omnipotent prestress stretch-draw connecting structure for finish-rolling screw-thread steel Download PDFInfo
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- CN202644401U CN202644401U CN 201220218496 CN201220218496U CN202644401U CN 202644401 U CN202644401 U CN 202644401U CN 201220218496 CN201220218496 CN 201220218496 CN 201220218496 U CN201220218496 U CN 201220218496U CN 202644401 U CN202644401 U CN 202644401U
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Abstract
The utility model discloses an omnipotent prestress stretch-draw connecting structure for finish-rolling screw-thread steel. The omnipotent prestress stretch-draw connecting structure for the finish-rolling screw-thread steel comprises a connector, a counter-force frame and an anchor plate especially. A steel strand anchor and a finish-rolling screw-thread steel anchor are respectively fixed to the connector, wherein the steel strand anchor is for fixation of steel strand and the finish-rolling screw-thread steel anchor is for fixation of the finish-rolling screw-thread steel. The omnipotent prestress stretch-draw connecting structure for the finish-rolling screw-thread steel is suitable for prestress stretching and drawing. When the stretching and drawing process begins, a jack can be used to stretch or draw the steel strand and the prestress can be conducted to the finish-rolling screw-thread steel through the connector. When the strength of stretching and drawing meets the design tonnage, the finish-rolling screw-thread steel anchor can be used for anchoring to achieve stretching and drawing of the finish-rolling screw-thread steel. The omnipotent prestress stretch-draw connecting structure for the finish-rolling screw-thread steel is simple in structure, explicit when under stress and wide in scope of application. Especially, when used for prestress stretching and drawing of finish-rolling screw-thread steel with small diameter and relatively small tonnage of stretching and drawing, the omnipotent prestress stretch-draw connecting structure for the finish-rolling screw-thread steel can adopt the widely used method of replacing a finish-rolling screw-thread steel prestress stretch-draw device by a steel strand stretch-draw device. The bridge construction equipment is substantially simplified and the economical efficiency of bridge construction and the generality of construction equipment are substantially promoted.
Description
Technical field
The utility model belongs to the bridge construction field of engineering technology, especially relates to a kind of omnipotent fining twisted steel prestressed stretch-draw syndeton.
Background technology
The prestressed strand that uses on the bridge at present mostly is steel strand or major diameter, and corresponding tensioning equipment is comparatively general, and prestressed strand adopts the probability of finish rolling screw thread prestressed strand more and more less, especially minor diameter steel bundle uses still less, supporting tensioning equipment utilization rate is lower, less economical, thus cause supporting with it tensioning equipment fewer and feweri.
The superimposed wooden bridge panel of stress is a kind of bridge deck that improve globality between plate by applying transverse prestress.Because timber belongs to a kind of biomaterial, under External Force Acting, environment and the impact of self moisture content, loss of prestress is more serious, so the prestressed strand of the superimposed wooden bridge panel of stress needs repeatedly repeat stretch-draw, timber compressive strength is low than general concrete or steel in addition, required prestress value is less, so the prestressed strand of its use is generally minor diameter and makes things convenient for the fining twisted steel of repeat stretch-draw.
Use the superimposed timber floor of bridge slab of jack tension stress bundle, the problem of its existence mainly contains:
(1) prestressed strand that uses on the present bridge is generally steel strand, but steel strand anchorage repeat stretch-draw inconvenience and safety are not enough, and steel strand surface is more smooth, steel strand are used for the superimposed wooden bridge panel of stress can reduce frictional force between steel bundle plank, cause the prestressing force effect to reduce, so the superimposed timber floor of bridge slab of stress bundle does not generally adopt steel strand, can not use steel strand jack commonly used at present to carry out stretch-draw;
(2) the general diameter of fining twisted steel and the tension tonnage that use on the present bridge are all larger, the tensioning equipment that is suitable for the minor diameter fining twisted steel is less, adopt the fining twisted steel jack that uses on the present bridge can cause the stretch-draw precision not enough, and needing the stretch-draw connector of process mating, construction is inconvenient.
Summary of the invention
For the defective that exists in the above-mentioned prior art or deficiency, the utility model purpose is, a kind of omnipotent fining twisted steel prestressed stretch-draw syndeton is provided, it is simple in structure, stressed clear and definite, the scope of application is extensive, and the fining twisted steel prestressed stretch-draw that especially minor diameter and tension tonnage are less can utilize the steel strand tension equipment replacement fining twisted steel tensioning equipment that generally uses at present, greatly simplify equipment for bridge construction, improve bridge construction economy and construction equipment versatility.
In order to realize above-mentioned task, the utility model adopts following technical solution to be achieved:
A kind of omnipotent fining twisted steel prestressed stretch-draw syndeton, comprise connector, it is characterized in that, also include reaction frame and anchor plate, described connector has upper steel strand anchorage and the fining twisted steel ground tackle of being fixed with respectively, wherein, steel strand anchorage is used for fixedly steel strand, and the fining twisted steel ground tackle is used for fixedly fining twisted steel.
Other characteristics of the present utility model are:
Described connector is comprised of upper steel plate, lower steel plate and connector rod iron, upper steel plate and lower steel plate are positioned at connector rod iron both sides, have the steel strand preformed hole for steel strand on the upper steel plate, have on the lower steel plate be used to the fining twisted steel preformed hole of wearing fining twisted steel.
Described reaction frame is comprised of reaction frame steel plate and reaction frame rod iron, and reaction frame steel plate center has be used to the reaction frame steel strand preformed hole that passes steel strand, and described reaction frame is supported on the anchor plate upper surface during stretch-draw.
Described steel strand are a branch of or multi beam.
The diameter of described fining twisted steel is φ 18 and φ 20.
Described anchor plate (7) is steel plate or is the hard plank.
Omnipotent fining twisted steel prestressed stretch-draw syndeton of the present utility model compared with prior art has the following advantages:
1, simple in structure, reasonable in design and easy to operate, can adopt steel strand tension equipment commonly used to realize the stretch-draw of fining twisted steel.
2, economic results in society are high, can simplify equipment for bridge construction, improve the versatility of bridge tensioning equipment, thereby improve its economy.
3, easy to use and applied widely, syndeton is simple to operate, and is easy to use, and can make it to be fit to by increase and decrease steel strand radical the fining twisted steel of different-diameter, and the scope of application is extensive.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the connector construction schematic diagram.
Fig. 3 is the reaction frame structural representation.
Mark among the figure represents respectively: 1, steel strand, 2, steel strand anchorage, 3, fining twisted steel, 4, fining twisted steel ground tackle, 5, connector, 6, reaction frame, 7, anchor plate, 8, upper steel plate, 9, the steel strand preformed hole, 10, lower steel plate, 11, fining twisted steel preformed hole, 12, the connector rod iron, 13, the reaction frame steel plate, 14, reaction frame steel strand preformed hole, 15, the reaction frame rod iron.
The utility model is described in further detail below in conjunction with drawings and Examples.
The specific embodiment
Referring to Fig. 1, Fig. 2 and Fig. 3, present embodiment provides a kind of concrete omnipotent fining twisted steel prestressed stretch-draw syndeton, is comprised of steel strand 1, steel strand anchorage 2, fining twisted steel 3, fining twisted steel ground tackle 4, connector 5, reaction frame 6 and anchor plate 7 etc.Wherein, steel strand anchorage 2 is used for fixedly steel strand 1, and fining twisted steel ground tackle 4 is used for fixedly fining twisted steel 3.Directly with jack tension steel strand 1, by connector 5 prestressing force is passed to fining twisted steel 3 again during stretch-draw, stretch-draw namely reaches the purpose of stretch-draw fining twisted steel 3 behind the builder's tonnage with 4 anchorings of fining twisted steel ground tackle.
In the present embodiment, connector 5 is comprised of upper steel plate 8, lower steel plate 10 and connector rod iron 12, upper steel plate 8 and lower steel plate 10 are positioned at connector rod iron 12 both sides, have the steel strand preformed hole 9 for steel strand 1 on the upper steel plate 8, have on the lower steel plate 10 be used to the fining twisted steel preformed hole 11 of wearing fining twisted steel 3.
Steel strand 1 are a branch of or multi beam.Steel strand anchorage 2 is corresponding to single anchor or group's anchor of steel strand 1.The diameter of fining twisted steel 3 is φ 18 and φ 20, and the diameter of the size of fining twisted steel ground tackle 4 and fining twisted steel 3 is complementary.
In implementation process, first fining twisted steel 3 is penetrated as requested and apply in advance in the prestressed member, and fining twisted steel 3 carried out preservative treatment, fining twisted steel ground tackle 4 anchorings of fining twisted steel 3 one ends, anchor plate 7 is set between ground tackle and member, the other end penetrates in the fining twisted steel preformed hole 11 of connector 5, and with 4 anchorings of fining twisted steel ground tackle.Steel strand 1 are penetrated in the steel strand preformed hole 9 of connector 5 simultaneously, and use steel strand anchorage anchoring, the other end to pass the reaction frame steel strand preformed hole 14 of reaction frame 6.During stretch-draw, directly use the jack tension steel strand, by supporting the reaction frame 6 on the anchor plate 7, with steel strand jack tension steel strand 1, then utilize connector 5 that pretension is passed to fining twisted steel 3, stretch-draw is tightened fining twisted steel ground tackle 4 during to builder's tonnage, thereby reaches the purpose of fining twisted steel prestressed stretch-draw.
In sum, omnipotent fining twisted steel prestressed stretch-draw syndeton of the present utility model, reasonable in design, stressed clear and definite, the scope of application is extensive, especially the fining twisted steel prestressed stretch-draw that minor diameter and tension tonnage are less, can utilize the steel strand tension equipment replacement fining twisted steel tensioning equipment that generally uses at present, greatly simplify equipment for bridge construction, improve bridge construction economy and construction equipment versatility.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; every any simple modification, change and equivalent structure of above embodiment being done according to the utility model technical spirit changes, and all still belongs in the protection domain of technical solutions of the utility model.
Claims (6)
1. omnipotent fining twisted steel prestressed stretch-draw syndeton, comprise connector (5), it is characterized in that, also include reaction frame (6) and anchor plate (7), described connector (5) has upper steel strand anchorage (2) and the fining twisted steel ground tackle (4) of being fixed with respectively, wherein, steel strand anchorage (2) is used for fixedly steel strand (1), and fining twisted steel ground tackle (4) is used for fixedly fining twisted steel (3).
2. omnipotent fining twisted steel prestressed stretch-draw syndeton as claimed in claim 1, it is characterized in that: described connector (5) is comprised of upper steel plate (8), lower steel plate (10) and connector rod iron (12), upper steel plate (8) and lower steel plate (10) are positioned at connector rod iron (12) both sides, have the steel strand preformed hole (9) for steel strand (1) on the upper steel plate (8), have on the lower steel plate (10) be used to the fining twisted steel preformed hole (11) of wearing fining twisted steel (3).
3. omnipotent fining twisted steel prestressed stretch-draw syndeton as claimed in claim 1, it is characterized in that, described reaction frame (6) is comprised of reaction frame steel plate (13) and reaction frame rod iron (15), reaction frame steel plate (13) center has be used to the reaction frame steel strand preformed hole (14) that passes steel strand (1), and described reaction frame (6) is supported on anchor plate (7) upper surface during stretch-draw.
4. omnipotent fining twisted steel prestressed stretch-draw syndeton as claimed in claim 1, it is characterized in that: described steel strand (1) are a branch of or multi beam.
5. omnipotent fining twisted steel prestressed stretch-draw syndeton as claimed in claim 1 is characterized in that, the diameter of described fining twisted steel (3) is φ 18 and φ 20.
6. omnipotent fining twisted steel prestressed stretch-draw syndeton as claimed in claim 1 is characterized in that: described anchor plate (7) is for steel plate or be the hard plank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220218496 CN202644401U (en) | 2012-05-15 | 2012-05-15 | Omnipotent prestress stretch-draw connecting structure for finish-rolling screw-thread steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220218496 CN202644401U (en) | 2012-05-15 | 2012-05-15 | Omnipotent prestress stretch-draw connecting structure for finish-rolling screw-thread steel |
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| Publication Number | Publication Date |
|---|---|
| CN202644401U true CN202644401U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220218496 Expired - Fee Related CN202644401U (en) | 2012-05-15 | 2012-05-15 | Omnipotent prestress stretch-draw connecting structure for finish-rolling screw-thread steel |
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| Country | Link |
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| CN (1) | CN202644401U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257321A (en) * | 2015-09-28 | 2016-01-20 | 上海市基础工程集团有限公司 | Shield tunnel initial-stage construction duct piece pulling connection device and construction method |
| CN109695315A (en) * | 2019-02-02 | 2019-04-30 | 河北工业大学 | A kind of assembled steel tube bank prestressed concrete combination beam and its construction method |
| CN113091978A (en) * | 2021-03-19 | 2021-07-09 | 安徽金星预应力工程技术有限公司 | Device and method for detecting prestress of parallel steel strand type stay cable |
-
2012
- 2012-05-15 CN CN 201220218496 patent/CN202644401U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257321A (en) * | 2015-09-28 | 2016-01-20 | 上海市基础工程集团有限公司 | Shield tunnel initial-stage construction duct piece pulling connection device and construction method |
| CN105257321B (en) * | 2015-09-28 | 2018-05-04 | 上海市基础工程集团有限公司 | Shield tunnel construction at initial stage section of jurisdiction sockets device and construction method |
| CN109695315A (en) * | 2019-02-02 | 2019-04-30 | 河北工业大学 | A kind of assembled steel tube bank prestressed concrete combination beam and its construction method |
| CN113091978A (en) * | 2021-03-19 | 2021-07-09 | 安徽金星预应力工程技术有限公司 | Device and method for detecting prestress of parallel steel strand type stay cable |
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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: 20130102 Termination date: 20130515 |