CN109629459A - Free cantilever erection bridge section is carried out to positive device using electromagnetic force - Google Patents
Free cantilever erection bridge section is carried out to positive device using electromagnetic force Download PDFInfo
- Publication number
- CN109629459A CN109629459A CN201910118335.6A CN201910118335A CN109629459A CN 109629459 A CN109629459 A CN 109629459A CN 201910118335 A CN201910118335 A CN 201910118335A CN 109629459 A CN109629459 A CN 109629459A
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- China
- Prior art keywords
- bridge section
- electromagnet
- free cantilever
- cantilever erection
- electromagnetic force
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/10—Cantilevered erection
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to a kind of free cantilever erection bridge section aligning devices of technical field of bridge engineering, including DC power supply, rheostat, live wire, be embedded in concrete bridge section have concave and convex surface electromagnet, be prefabricated in the factory concrete beam end when at beam-ends lateral connection pre-buried electromagnet, and convex surface and concave surface is respectively set with accurate bite in two sections of electromagnet joints interconnected.When docking at the scene, the electromagnet at beam-ends will be embedded in and be powered, electromagnetic attraction is generated to help beam-ends quick and precisely to dock by N, S interpolar.Docking is completed, and after tension of prestressed tendon, can stop being powered, electromagnetic force is avoided to impact the use of subsequent construction and bridge.The present invention can guarantee that bridge section is fast and accurately spliced in existing bridge section in bridge section free cantilever erection, avoid the case where lower, Wind effects of overhead traveling crane moving distance exact value etc. cause free cantilever erection to need repeated measurement, and then accelerate engineering construction speed.
Description
Technical field
The present invention relates to a kind of aligning devices of technical field of bridge engineering, utilize electromagnetic force more particularly to a kind of
Free cantilever erection bridge section is carried out to positive device.
Background technique
Erection by protrusion is that prefabricated beam section is lifted to bridge location using mobile cantilever loop wheel machine, then using it is wet connect, stem grafting
Or be glued connect at bridge portion it is integral.Using piecewise assembly, after a segment stretch-draw anchor, then assembled next segment.It is suitable
The beam bridge engineering that condition is good, and especially project amount is big and the duration is shorter is hung for prefabricated place and fortune.It has concrete quality
Good, contraction, creeps many advantages, such as small, occupied ground is small, without conserving.But in the actual construction process, if leading portion occurs
Deviation is amplified when angular deviation will lead to assembled subsequent block.But when lifting, influenced by wind load and temperature load etc., bridge section
It is difficult completely corresponding with accurate location.Therefore, in the actual construction process, repeated measurement bridge section position is wanted to be adjusted in the pre-connection
It is whole, considerably increase construction period and human resources.
Summary of the invention
It is an object of the invention to design it is a kind of carry out free cantilever erection bridge section to positive device using electromagnetic force, improve cantilever
The problem of bridge section is difficult to just, repeated measurement is needed when assembled.By the electromagnet being embedded in concrete block, can make to dock
When both sides beam sections can accurately be bonded.It is influenced and is shaken by external loads when avoiding beam section docking, accurate docking is difficult
The problem of, the precision of engineering is improved, and reduce the working time of measurement, accelerates speed of application.
The present invention is achieved through the following technical solutions, the present invention include DC power supply, rheostat, live wire,
It is embedded in the electromagnet that concave and convex surface is had in concrete bridge section, live wire is embedded in concrete bridge section, electromagnetism Tie Tong
Live wire is crossed to be connected with DC power supply, rheostat.
Further, in the present invention, being embedded in electromagnet link position on two sections of beams is exactly beam-ends free cantilever erection position
It sets.
Further, in the present invention, electromagnet is evenly arranged in bridge section cross face, and electromagnet is arranged on cross section
Number, electromagnet the voltage of energization can be adjusted according to bridge section size and size.
Further, in the present invention, electromagnet side in convex surface is the pole N, and concave surface electromagnet side is the pole S.
Further, in the present invention, electromagnet is embedded in concrete bridge section by pedestal.
One section of electromagnet, one section of setting crowning setting concave face, guaranteeing cannot be completely to positive connection feelings when bridge section is connected
The occlusion aligned position of concave and convex surface can be passed through under condition.It is evenly arranged electromagnet in bridge section cross face, to guarantee that it is mixed
Solidifying soil uniform force, avoids the excessive crushing of concrete local stress.
Rheostat can adjust in real time size of current to control electromagnetic force, prevent from generating excessive impact force when docking and making to mix
Solidifying soil destroys.It is also ensured that power supply can be disconnected when docking dislocation, dock again.
Compared with prior art, the present invention has the advantages that are as follows:
First, the electromagnet being inserted into concrete has positioned it in precast concrete, can when assembled at the scene
It is assembled directly to carry out being powered, it is easy to operate.
Second, two occlusal surface of electromagnet uses the form of one concave surface of a convex surface, when the docking of two block concretes has small mistake
When poor, angular slippage can use between convex surface and concave surface to correct position.
Third, there are attractions between two pieces of bridge sections, can be difficult to avoid being influenced by external loads such as wind loads
It is moved to accurate location.
4th, attraction is controlled by variable rheostat between the electromagnet in beam section, can adjust attraction, in real time with balance
Different field external loading conditions, and part impact force makes more greatly concrete destruction when avoiding contact with.
5th, the step of when use can save measurement and positioning, eliminate engineering time required for measurement and manually at
This reduces the duration to reduce project cost.
Detailed description of the invention
Fig. 1 is present invention construction schematic diagram；
Fig. 2 is present invention construction side schematic view；
Fig. 3 is electromagnet cross-sectional view in concave surface of the present invention；
Fig. 4 is electromagnet cross-sectional view in convex surface of the present invention；
Wherein, 1, bridge section of having constructed, 2, concave surface electromagnet, 3, convex surface electromagnet, 4, lifting bridge section.
Specific embodiment
It elaborates with reference to the accompanying drawing to the embodiment of the present invention, before the present embodiment is with technical solution of the present invention
It mentions, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to following embodiments.
Embodiment
The invention mainly comprises bridge section 1 of having constructed, concave surface electromagnet 2, convex surface electromagnet 3, lifting bridge sections 4, DC power supply
With rheostat (in figure and being not drawn into), bridge section of having constructed 1 is similar with the general cantilever prefabricated bridge section of assembly method, one at two bridge section docking
The pre-buried concave surface electromagnet 2 of section, the pre-buried convex surface electromagnet 3 of another side.In free cantilever erection, when lifting bridge section 4 and bridge section 1 of having constructed
When reaching certain distance, the convex surface electromagnet 3 lifted in bridge section 4 can be generated with the concave surface electromagnet 2 constructed on 1 section of bridge section
Attraction enables lifting bridge section 4 to be attached together with bridge section 1 of having constructed.If there is situations such as docking dislocation, can disconnect
Power supply, attraction releases between concave surface electromagnet 2 and convex surface electromagnet 3, and bridge section of having constructed 1 and lifting bridge section 4 separate, and hangs again
Dress.
The concave surface electromagnet 2 and 3 pedestal of convex surface electromagnet being embedded in concrete suitably increase, and are conducive to help electromagnet
Being connected firmly between concrete prevents to slide.In addition to this, moreover it is possible to increase the power transmission between electromagnet and concrete
Area prevents impact load when impact from causing concrete destruction.
When using it is wet connect, the different seam forms of construction work such as stem grafting or splicing when, it is only necessary to concave surface electromagnetism is adjusted when pre-buried
The position of iron 2 and convex surface electromagnet 3 changes them in the extension elongation of bridge section 1 and lifting 4 cross section of bridge section of having constructed
Different gaps is reserved to carry out different seam constructions.
The present invention can save the step of measurement and positioning when use, eliminate measurement required for engineering time and manually at
This reduces the duration to reduce project cost.
Wherein, the size of electromagnet arranges that number, the voltage of energization of electromagnet etc. of electromagnet can bases on cross section
Bridge section size and size are adjusted, and the number and electromagnet pedestal of electromagnet are increased in size can be close according to reinforcing bar when bridge section arrangement of reinforcement
Degree and protective layer thickness are adjusted.
This hair can be understood and applied the above description of the embodiments is intended to facilitate those skilled in the art
It is bright.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to implementations here
Example, those skilled in the art's announcement according to the present invention, the improvement made for the present invention and modification all should be of the invention
Within protection scope.
Claims (5)
1. it is a kind of using electromagnetic force carry out free cantilever erection bridge section to positive device, it is characterised in that including DC power supply, rheostat,
Live wire is embedded in the electromagnet that concave and convex surface is had in concrete bridge section, and live wire is embedded in concrete bridge section,
Electromagnet is connected by live wire with DC power supply, rheostat.
2. according to claim 1 carry out free cantilever erection bridge section to positive device using electromagnetic force, it is characterised in that pre-buried
Electromagnet link position is exactly beam-ends free cantilever erection position on two sections of beams.
3. according to claim 1 carry out free cantilever erection bridge section to positive device using electromagnetic force, it is characterised in that described
Electromagnet is evenly arranged in bridge section cross face, the number of electromagnet is arranged on cross section, the voltage of energization of electromagnet can root
It is adjusted according to bridge section size and size.
4. according to claim 1 carry out free cantilever erection bridge section to positive device using electromagnetic force, it is characterised in that convex surface
Electromagnet side is the pole N, and concave surface electromagnet side is the pole S.
5. according to claim 1 carry out free cantilever erection bridge section to positive device using electromagnetic force, it is characterised in that described
Electromagnet is embedded in concrete bridge section by pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910118335.6A CN109629459A (en) | 2019-02-16 | 2019-02-16 | Free cantilever erection bridge section is carried out to positive device using electromagnetic force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910118335.6A CN109629459A (en) | 2019-02-16 | 2019-02-16 | Free cantilever erection bridge section is carried out to positive device using electromagnetic force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109629459A true CN109629459A (en) | 2019-04-16 |
Family
ID=66065300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910118335.6A Withdrawn CN109629459A (en) | 2019-02-16 | 2019-02-16 | Free cantilever erection bridge section is carried out to positive device using electromagnetic force |
Country Status (1)
| Country | Link |
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| CN (1) | CN109629459A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111426549A (en) * | 2020-04-27 | 2020-07-17 | 河南省交院工程检测科技有限公司 | Rapid centering method of bridge metal support |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1695024A (en) * | 2002-08-30 | 2005-11-09 | 小合资企业美国有限责任公司 | Magnetic docking apparatus and method for using the same |
| CN104787278A (en) * | 2012-12-27 | 2015-07-22 | 王海龙 | Hull of rapid combination and separation type aircraft carrier |
| CN107503521A (en) * | 2017-08-22 | 2017-12-22 | 中国建筑第七工程局有限公司 | A kind of prefabricated components built-in fitting is accurately positioned fixing device and its application method |
| CN206829120U (en) * | 2017-05-25 | 2018-01-02 | 尹静 | It is a kind of to carry out the assembled frock of prefabricated components fast positioning using magnetic attraction |
| CN108222285A (en) * | 2018-01-31 | 2018-06-29 | 合肥建工集团有限公司 | A kind of assembly concrete member reinforcing steel bar magnetic suspension connects localization method |
| US10100633B2 (en) * | 2016-08-23 | 2018-10-16 | Schlumberger Technology Corporation | Magnetic detection of drill pipe connections |
-
2019
- 2019-02-16 CN CN201910118335.6A patent/CN109629459A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1695024A (en) * | 2002-08-30 | 2005-11-09 | 小合资企业美国有限责任公司 | Magnetic docking apparatus and method for using the same |
| CN104787278A (en) * | 2012-12-27 | 2015-07-22 | 王海龙 | Hull of rapid combination and separation type aircraft carrier |
| US10100633B2 (en) * | 2016-08-23 | 2018-10-16 | Schlumberger Technology Corporation | Magnetic detection of drill pipe connections |
| CN206829120U (en) * | 2017-05-25 | 2018-01-02 | 尹静 | It is a kind of to carry out the assembled frock of prefabricated components fast positioning using magnetic attraction |
| CN107503521A (en) * | 2017-08-22 | 2017-12-22 | 中国建筑第七工程局有限公司 | A kind of prefabricated components built-in fitting is accurately positioned fixing device and its application method |
| CN108222285A (en) * | 2018-01-31 | 2018-06-29 | 合肥建工集团有限公司 | A kind of assembly concrete member reinforcing steel bar magnetic suspension connects localization method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111426549A (en) * | 2020-04-27 | 2020-07-17 | 河南省交院工程检测科技有限公司 | Rapid centering method of bridge metal support |
| CN111426549B (en) * | 2020-04-27 | 2023-05-02 | 中犇检测认证有限公司 | Quick centering method for bridge metal support |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190416 |
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| WW01 | Invention patent application withdrawn after publication |