CN203050133U - Prestressed steel structure drag cable tensioning device capable of accurately measuring tension force - Google Patents
Prestressed steel structure drag cable tensioning device capable of accurately measuring tension force Download PDFInfo
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- CN203050133U CN203050133U CN 201320071543 CN201320071543U CN203050133U CN 203050133 U CN203050133 U CN 203050133U CN 201320071543 CN201320071543 CN 201320071543 CN 201320071543 U CN201320071543 U CN 201320071543U CN 203050133 U CN203050133 U CN 203050133U
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- rod iron
- steel structure
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Abstract
The utility model discloses a prestressed steel structure drag cable tensioning device capable of accurately measuring tension force. The prestressed steel structure drag cable tensioning device capable of accurately measuring tension force comprises a steel bar, a steel strand connector, a reaction frame, a center-penetrating type hydraulic jack and a strain gauge, wherein a through hole is formed in the axis of the steel bar, an outer thread is arranged at one end of the steel bar, the steel strand connector is arranged at the other end of the steel bar, an opening structure is arranged at one end of the reaction frame, the reaction frame is provided with a central through hole, the steel bar and the steel strand connector are located in the reaction frame, the through hole of the steel bar and the central through hole of the reaction frame are on the same line, the center-penetrating type hydraulic jack is arranged at the other end of the reaction frame and is close to the central through hole, and the strain gauge is attached to the steel bar. The prestressed steel structure drag cable tensioning device capable of accurately measuring tension force can effectively tension a steel structure prestressed drag cable and accurately measure the tension force in the tensioning process, is definite in force transmission, and is reliable in tension. The read number of the strain gauge directly reflects the tension force and is simple and definite, so that the tension quality is controlled.
Description
Technical field
The utility model relates to a kind of steel structure tensioning construction device, relates in particular to a kind of prestressed steel structure drag-line tensioning equipment of accurate measurement stretching force.
Background technology
At present; the prestressed steel structure drag-line is when stretch-draw, because there is the high-strength PE overcoat of one deck topping the drag-line outside, the general measure instrument is difficult to contact with drag-line itself; be difficult to accurately determine the actual stretching force of setting up in the drag-line, only react the size of stretching force by the hydraulic jack reading.And the reading of hydraulic jack generally is more rough, only can roughly react the pulling force reading.
The utility model content
At the weak point of above-mentioned existence in the prior art, the utility model provides a kind of prestressed steel structure drag-line tensioning equipment of accurate measurement stretching force.
In order to solve the problems of the technologies described above, the utility model has adopted following technical scheme:
Accurately measure the prestressed steel structure drag-line tensioning equipment of stretching force, comprise rod iron, steel strand connector, reaction frame, feed-through hydraulic jack and foil gauge; Described rod iron has a through hole at axis, and an end of rod iron arranges external screw thread, and the other end of rod iron arranges steel strand connector; One end of described reaction frame has hatch frame, and reaction frame has a central through hole; Described rod iron and steel strand connector are positioned at reaction frame, and the central through hole of the through hole of rod iron and reaction frame in a straight line; Described feed-through hydraulic jack is arranged on the other end and the close central through hole of reaction frame; Described foil gauge is attached on the rod iron.
As a kind of preferred version of the present utility model, this device also comprises strain gauge, and described foil gauge links to each other with strain gauge by data wire.
As another kind of preferred version of the present utility model, described reaction frame is U-shaped structure.
As another preferred version of the present utility model, described foil gauge is two, and symmetry is attached to the both sides, middle part of rod iron.
Compared with prior art, the prestressed steel structure drag-line tensioning equipment of accurate measurement stretching force of the present utility model has following advantage:
1, adopt this tensioning equipment to carry out stretch-draw, power transmission is clear and definite, and stretch-draw is reliable, and strain-ga(u)ge reading directly reacts the stretching force level, and is simple clear and definite, is conducive to control the stretch-draw quality; And can accurately set up the prestressed steel structure tensioning construction of stretching force.
2, measure accurately, compared with the oil meter reading of using the stretch-draw jack, the foil gauge in this device utilizes pressure sensor to check behind paster, and its precision can reach 0.2KN.
Description of drawings
Fig. 1 is the structural representation of accurately measuring the prestressed steel structure drag-line tensioning equipment of stretching force;
Fig. 2 is the structural representation of reaction frame.
In the accompanying drawing: 1-rod iron; 2-steel strand connector; 3-reaction frame; 4-feed-through hydraulic jack; 5-central through hole; 6-foil gauge; 7-steel strand; 8-anchorage zone bearing; 9-backing plate; 10-anchoring nut; 11-anchor bolt.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
As shown in Figure 1, accurately measure the prestressed steel structure drag-line tensioning equipment of stretching force, comprise rod iron 1, steel strand connector 2, reaction frame 3, feed-through hydraulic jack 4 and foil gauge 6.Rod iron 1 has a through hole at axis, and an end of rod iron 1 arranges external screw thread, makes it to screw in chill casting anchor anchor head and reliably connects, and the length of threaded area is also determined according to anchor head internal whorl length; The other end of rod iron 1 arranges steel strand connector 2, and steel strand connector 2 is single hole, and there is intermediate plate in its inside, can clamp prestress wire, and an end of steel strand connector 2 is connected on the rod iron 1 by the mode of welding.The structure of reaction frame 3 as shown in Figure 2, reaction frame 3 is U-shaped structure, an end of reaction frame 3 is opening, reaction frame 3 has a central through hole 5, this central through hole 5 is arranged on the other end of reaction frame 3.Rod iron 1 and steel strand connector 2 are positioned at reaction frame 3, and the central through hole 5 of the through hole of rod iron 1 and reaction frame 3 in a straight line.Feed-through hydraulic jack 4 is arranged on the other end and the close central through hole 5 of reaction frame 3.Foil gauge 6 is two, and the symmetrical both sides, middle part that are attached to rod iron, and foil gauge 6 links to each other with strain gauge by data wire.
When using this accurately to measure the prestressed steel structure drag-line tensioning equipment of stretching force, at first, steel strand for prestressed concrete 7 are passed rod iron 1, central through hole 5 on steel strand connector 2 and the reaction frame 3, the male end of rod iron 1 screws in the internal thread of drag-line anchor head (in the internal thread at anchor head hush panel place, set gradually backing plate 9 in the outside of anchorage zone bearing 8, anchoring nut 10 and anchor bolt 11, anchor bolt 11 screws in anchorage zone bearing 8, anchoring nut 10 rotation sets are being pressed on the anchorage zone bearing 8 on the anchor bolt 11 and by backing plate 9), with the transmission pulling force of safety, the steel strand connector 2 that rod iron 1 other end connects is clamped this steel strand 7.Then, the openend of reaction frame 3 is withstood on the anchorage zone bearing 8, feed-through hydraulic jack 4 is installed on the other end of reaction frame 3 and clamps steel strand 7.At last, 4 pairs of steel strand of feed-through hydraulic jack 7 carry out stretch-draw, and rod iron 1 participates in distortion as a stressed part during stretch-draw, 6 real time record of foil gauge and detection distortion.Stretch-draw is grading tension, tentatively controls stretching force earlier by the oil pump reading, and fuel cut-off when approaching the stretching force that designs is accurately read the strain size by strain gauge then.
This device is to utilize strain gauge to cooperate foil gauge to measure the principle of steel deformation of member internal force.Can produce the characteristic of tensile strain according to the steel member when the stressed stretch-draw, have foil gauge to measure to be connected the strain size of member, read strain value by strain gauge again.The poisson's ratio coefficient that steel are multiply by in this strain then can obtain corresponding stress, and stress can obtain total pulling force at the sectional area that multiply by counterpart member.
Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of the technical program, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (4)
1. accurately measure the prestressed steel structure drag-line tensioning equipment of stretching force, it is characterized in that: comprise rod iron (1), steel strand connector (2), reaction frame (3), feed-through hydraulic jack (4) and foil gauge (6); Described rod iron (1) has a through hole at axis, and an end of rod iron (1) arranges external screw thread, and the other end of rod iron (1) arranges steel strand connector (2); One end of described reaction frame (3) has hatch frame, and reaction frame (3) has a central through hole (5); Described rod iron (1) and steel strand connector (2) are positioned at reaction frame (3), and the central through hole of the through hole of rod iron (1) and reaction frame (3) in a straight line; Described feed-through hydraulic jack (4) is arranged on the other end and the close central through hole (5) of reaction frame (3); Described foil gauge (6) is attached on the rod iron (1).
2. the prestressed steel structure drag-line tensioning equipment of accurate measurement stretching force according to claim 1, it is characterized in that: also comprise strain gauge, described foil gauge (6) links to each other with strain gauge by data wire.
3. the prestressed steel structure drag-line tensioning equipment of accurate measurement stretching force according to claim 1, it is characterized in that: described reaction frame (3) is U-shaped structure.
4. the prestressed steel structure drag-line tensioning equipment of accurate measurement stretching force according to claim 1, it is characterized in that: described foil gauge (6) is two, and symmetry is attached to the both sides, middle part of rod iron (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320071543 CN203050133U (en) | 2013-02-07 | 2013-02-07 | Prestressed steel structure drag cable tensioning device capable of accurately measuring tension force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320071543 CN203050133U (en) | 2013-02-07 | 2013-02-07 | Prestressed steel structure drag cable tensioning device capable of accurately measuring tension force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203050133U true CN203050133U (en) | 2013-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320071543 Expired - Fee Related CN203050133U (en) | 2013-02-07 | 2013-02-07 | Prestressed steel structure drag cable tensioning device capable of accurately measuring tension force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203050133U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532745A (en) * | 2014-12-11 | 2015-04-22 | 中建六局土木工程有限公司 | Mounting method for unbounded pre-stress steel bars of large-span variable cross-section pre-stressed girder type bridge |
| CN105784243A (en) * | 2016-03-16 | 2016-07-20 | 浙江大学城市学院 | Method for calculating prestress loss caused by anchorage retraction |
| CN106996843A (en) * | 2017-05-05 | 2017-08-01 | 哈电集团（秦皇岛）重型装备有限公司 | HTGR steam (vapor) outlet connecting tube pipe clamp pretightening force measuring apparatus and method |
| CN109489882A (en) * | 2018-11-22 | 2019-03-19 | 长安大学 | Big-size model test is anchored with cable-stayed bridge cable and cable tension test device and method |
| CN109724740A (en) * | 2019-01-12 | 2019-05-07 | 尚廷东 | A kind of drag-line bridge cable force measurement device |
| 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 |
| CN113108968A (en) * | 2021-03-19 | 2021-07-13 | 安徽金星预应力工程技术有限公司 | Reaction frame for testing parallel steel stranded stay cables |
| CN113640333A (en) * | 2021-08-05 | 2021-11-12 | 烟台大学 | Steel cable fire resistance limit testing device coated with fireproof coating and testing method |
| TWI786611B (en) * | 2021-04-26 | 2022-12-11 | 佳彧機械工程有限公司 | High tensile steel rod strength safety detection device and its operation method |
| CN109724740B (en) * | 2019-01-12 | 2024-04-16 | 尚廷东 | Cable force measuring device for inhaul cable bridge |
-
2013
- 2013-02-07 CN CN 201320071543 patent/CN203050133U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532745A (en) * | 2014-12-11 | 2015-04-22 | 中建六局土木工程有限公司 | Mounting method for unbounded pre-stress steel bars of large-span variable cross-section pre-stressed girder type bridge |
| CN104532745B (en) * | 2014-12-11 | 2016-06-08 | 中建六局土木工程有限公司 | Long span variable cross-section prestressing force beam bridge prestressing without bondn rod iron installation method |
| CN105784243A (en) * | 2016-03-16 | 2016-07-20 | 浙江大学城市学院 | Method for calculating prestress loss caused by anchorage retraction |
| CN106996843A (en) * | 2017-05-05 | 2017-08-01 | 哈电集团（秦皇岛）重型装备有限公司 | HTGR steam (vapor) outlet connecting tube pipe clamp pretightening force measuring apparatus and method |
| CN109489882A (en) * | 2018-11-22 | 2019-03-19 | 长安大学 | Big-size model test is anchored with cable-stayed bridge cable and cable tension test device and method |
| CN109489882B (en) * | 2018-11-22 | 2020-10-13 | 长安大学 | Cable-stayed bridge cable anchoring and cable force testing device and method for large-size model test |
| CN109724740A (en) * | 2019-01-12 | 2019-05-07 | 尚廷东 | A kind of drag-line bridge cable force measurement device |
| CN109724740B (en) * | 2019-01-12 | 2024-04-16 | 尚廷东 | Cable force measuring device for inhaul cable bridge |
| 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 |
| CN113108968A (en) * | 2021-03-19 | 2021-07-13 | 安徽金星预应力工程技术有限公司 | Reaction frame for testing parallel steel stranded stay cables |
| TWI786611B (en) * | 2021-04-26 | 2022-12-11 | 佳彧機械工程有限公司 | High tensile steel rod strength safety detection device and its operation method |
| CN113640333A (en) * | 2021-08-05 | 2021-11-12 | 烟台大学 | Steel cable fire resistance limit testing device coated with fireproof coating and testing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20160207 |