CN108660948A - Detachable Prefabricated combined beam screw and combination beam - Google Patents
Detachable Prefabricated combined beam screw and combination beam Download PDFInfo
- Publication number
- CN108660948A CN108660948A CN201810463280.8A CN201810463280A CN108660948A CN 108660948 A CN108660948 A CN 108660948A CN 201810463280 A CN201810463280 A CN 201810463280A CN 108660948 A CN108660948 A CN 108660948A
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- China
- Prior art keywords
- screw
- prefabricated combined
- combined beam
- detachable prefabricated
- girder steel
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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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of detachable Prefabricated combined beam screw and combination beams.Detachable Prefabricated combined beam screw, including screw rod, screw hole dummy slider, nut and gasket, wherein screw rod provide shear resistance capacity, and screw hole dummy slider limits the relative displacement between screw hole and screw rod, while providing part bearing capacity.Nut and gasket are used to detachable Prefabricated combined beam screw being fixed on girder steel, when needing dismounting, it is only necessary to which unloading lower nut and gasket can make girder steel and concrete become to replace.A kind of combination beam using the detachable Prefabricated combined beam screw, girder steel in combination beam is according to the size reserving hole of detachable Prefabricated combined beam screw.It the beneficial effects of the invention are as follows can be dismantled, while can also be carried out by factory prefabricated, the time of structural maintenance can be reduced, minimize the expense of maintenance and indirect loss that maintenance is brought.The present invention also can guarantee corresponding rigidity and intensity requirement simultaneously.
Description
Technical field
The present invention relates to a kind of novel compositions beam shear connectors of field of civil engineering, especially detachable and prefabricated
Combination beam screw and use its combination beam.
Background technology
In most recent two decades, the fast degradation of bridge performance has become a major issue, leads to this problem
It is many because being known as：The increase of the magnitude of traffic flow, harsh environmental condition, quality of construction material etc..Bridge in the world is big
It is all influenced by the above factor.For example, in the U.S., totals over at least one third in 600,000 bridge blocks and need to carry out
It safeguards.The maintenance of bridge can ensure applicability and the safety of bridge, be usually directed to the inspection of entire bridge or bridge member
It looks into, repair, reinforce and replaces.However due to interruption of communication caused by repair, maintenance often bring some directly or
Indirect economic loss, such as flight delay, longer transportation range and the interruption etc. of business transaction.According to the type of bridge
And the range safeguarded, indirect economic loss is often several times of direct economic loss, this is bridge construction, and that person faces is main
One of challenge.Therefore whether bridge member is convenient for checking, safeguard and replacing seeming particularly significant.
In addition, in bridge member, the performance degradation speed of bridge floor is significantly faster than that other components.In the U.S., have close
The bridge floor of 33% bridge needs replacing after reaching 40 years average service service life.Being worth mentioning is, the replacement of floorings is bridge
The typical way of repair, because in most cases, repair floorings are difficult the requirement for meeting bridge life.For steel-concrete
Combined bridge, due to the connection between bridge floor and girder steel so that the bridge floor for replacing performance degradation is more challenging.
Now traditional steel-concrete composite beam, connector are mainly welded to the peg on girder steel top.Therefore, exist
It when replacing bridge floor, needs to destroy the concrete near peg, bridge floor can just be replaced, and the peg for removing welding will
Girder steel is damaged, this process is costly and time-consuming, while having danger.Other than the degeneration of bridge floor performance, other bridges
Beam degradation mechanism further includes fatigue and the corrosion of peg and girder steel, and the repair of this corrosion condition is equally relatively difficult, is needed
Expend a large amount of man power and material.
Based on this present situation, a kind of feasible method is development or proposes a kind of novel dismountable bridge structure, goes to permit
Perhaps the fast quick-detach of bridge structure, while nor affecting on the globality and mechanical property of bridge.Once bridge has detachable
Property, so that it may to go to extend the service life of bridge with smaller cost, while being lost caused by capable of also reducing traffic jam.Therefore, I
Propose the design of detachable Prefabricated combined beam screw so that structure has detachability.
Invention content
In order to overcome the non-dismountable property of conventional composite beam, a kind of detachable Prefabricated combined beam screw of present invention proposition and group
Beam is closed, not only there is good detachability using the combination beam of the screw, while can also at the scene be carried out by prefabrication
Assembly can effectively reduce the construction time.Can prefabricated property and detachability be the present invention two big features.
A kind of detachable Prefabricated combined beam screw, including screw rod, screw hole dummy slider, nut and gasket, wherein screw rod provide by
Bearing capacity is cut, and screw hole dummy slider limits the relative displacement between screw hole and screw rod, while part bearing capacity being provided.Nut and gasket
For detachable Prefabricated combined beam screw to be fixed on girder steel, when needing dismounting, it is only necessary to which steel can be made by unloading lower nut and gasket
Beam and concrete become to replace.
A kind of combination beam using the detachable Prefabricated combined beam screw, the girder steel in combination beam is according to detachable pre-
The size reserving hole of combination beam screw processed.
It the beneficial effects of the invention are as follows can be dismantled, while can also be carried out by factory prefabricated, structure can be reduced
The time of maintenance minimizes the expense of maintenance and indirect loss that maintenance is brought.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the application schematic diagram of the present invention；
Fig. 3 is the 1-1 sectional views of Fig. 2；
Fig. 4 is force-displacement curve；
In figure, detachable Prefabricated combined beam screw 1, concrete 2, girder steel 3, gasket 4, nut 5, screw hole dummy slider 6, screw rod 7.
Specific implementation mode
The present invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, detachable Prefabricated combined beam screw includes screw rod 7, screw hole dummy slider 6, nut 5 and gasket 4.Wherein spiral shell
Bar 7 provides main shear resistance capacity, and screw hole dummy slider 6 limits the relative displacement between screw hole and screw rod 7, while providing part
Detachable Prefabricated combined beam screw is fixed on girder steel by bearing capacity, nut and gasket.Girder steel in combination beam should by it is used can
The size of dismounting Prefabricated combined beam screw carrys out reserving hole, if I-beam is then boxed out in top flange.Detachable Prefabricated combined beam
The size and number of screw, according to《Code for design of steel structures》In steel-concrete composite beam be designed.
Due to the precision problem of processing installation, reserving hole is naturally larger than the diameter of bolt, so that screw rod 7 and preformed hole
There are gaps between hole, and gap so that combination beam will produce initial slippage under Loading, influence the performance of combination beam.Spiral shell
Hole dummy slider 6 solves the clearance issues between hole and bolt caused by reserving hole, and screw hole dummy slider 6 can be limited further
Relative displacement between screw hole and screw rod so that the shearing between girder steel 3 and concrete 2 is from starting to transmit, without sending out
Raw initial slippage problem.The force-displacement curve of the present invention is obtained through overtesting, by the welding for calculating the present invention and same diameter
The initial stiffness of peg very close to, such as a diameter of 13 millimeters the present invention and weld stud initial stiffness be 40KN/mm or so,
Illustrate that screw hole dummy slider can effectively limit the generation of initial slippage.A diameter of 13 millimeters of force-displacement curve of the present invention such as Fig. 4 institutes
Show.
Embodiment
The detachable Prefabricated combined beam screw intensity and number, the strength of materials of each component, size and girder steel of the present invention
The arrangement of reinforcement of concrete according to《Code for design of steel structures》In steel-concrete composite beam be designed, to meet intensity and stabilization
Requirement.
One, assembling mode is made
In fig. 1-3, the size of girder steel 3, the steel reinforcement cage of concrete 2 and size according to《Code for design of steel structures》In steel-it is mixed
Solidifying soil combination beam is designed.Detachable Prefabricated combined beam screw 1 should be embedded in concrete 2, and screw thread side needs to reserve
Enough length, to be connected with girder steel 3, the insertion concrete 2 that the non-threaded side of screw rod can be tightly.Girder steel 3 needs preformed hole
Hole, size is consistent with detachable Prefabricated combined beam screw 1, so that detachable Prefabricated combined beam screw 1 can be with top insertion and anchor
Gu.After the completion of structure design, factory can be transferred to carry out prefabricated, being transported to scene after the completion of prefabricated is installed.
When installation, 3 downside of girder steel should carry out the installation of detachable Prefabricated combined beam screw there are enough spaces, later
The beams of concrete 2 of pre-buried detachable Prefabricated combined beam screw 1 is placed on 1 upside of girder steel, and makes detachable Prefabricated combined beam screw 1
Screw thread side be inserted into girder steel 3 reserving hole.After girder steel 1 and the correspondence of beams of concrete 2 place, in detachable Prefabricated combined beam
The screw thread side of screw 1 adds gasket 4, and screws on nut 5, you can completes installation.
Two, later maintenance mode
When the component of prefabricated expansion bolt combination beam needs, which are replaced, to be safeguarded, back out in nut 5 so that girder steel 3, concrete
2 and detachable Prefabricated combined beam screw 1 become that the maintenance input of structure and loss with dismounting and change, can be substantially reduced.
New component is replaced assembling again by above-mentioned fabrication and installation mode after dismounting, you can achieve the purpose that maintenance.
Claims (2)
1. a kind of detachable Prefabricated combined beam screw, which is characterized in that including screw rod（7）, screw hole dummy slider（6）, nut（5）And pad
Piece（4）, wherein screw rod（7）Offer shear resistance capacity, and screw hole dummy slider（6）Limit screw hole and screw rod（7）Between relative displacement,
Part bearing capacity is provided simultaneously, and nut and gasket are used to detachable Prefabricated combined beam screw being fixed on girder steel.
2. a kind of combination beam using detachable Prefabricated combined beam screw as described in claim 1, which is characterized in that combination beam
In girder steel according to the size reserving hole of detachable Prefabricated combined beam screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810463280.8A CN108660948A (en) | 2018-05-15 | 2018-05-15 | Detachable Prefabricated combined beam screw and combination beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810463280.8A CN108660948A (en) | 2018-05-15 | 2018-05-15 | Detachable Prefabricated combined beam screw and combination beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108660948A true CN108660948A (en) | 2018-10-16 |
Family
ID=63778500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810463280.8A Pending CN108660948A (en) | 2018-05-15 | 2018-05-15 | Detachable Prefabricated combined beam screw and combination beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108660948A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109487699A (en) * | 2018-12-07 | 2019-03-19 | 东南大学 | A kind of steel plate support-skew nailing combined type interface connection steel-UHPC thin plate combined structure system |
| CN109487698A (en) * | 2018-12-07 | 2019-03-19 | 东南大学 | A kind of steel plate support-skew nailing combined type quickly connects steel-UHPC combined structure system |
| CN110067184A (en) * | 2019-05-14 | 2019-07-30 | 华南理工大学 | A kind of pin device constraining curved beam bridges horizontal displacement |
| CN114033205A (en) * | 2021-11-05 | 2022-02-11 | 北京航空航天大学 | Method for improving performance of existing steel-concrete composite beam |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10102603A (en) * | 1996-09-26 | 1998-04-21 | Matsushita Electric Works Ltd | Connecting construction between column and beam |
| CN202595644U (en) * | 2012-06-06 | 2012-12-12 | 刘红莹 | Anti-dazzle device for road |
| CN203878753U (en) * | 2014-04-29 | 2014-10-15 | 东南大学 | High-strength bolt shear key structure |
| CN107313540A (en) * | 2017-07-24 | 2017-11-03 | 太原理工大学 | The anti-buckling assembled combination beam of fire prevention and construction method |
| CN107313347A (en) * | 2017-07-24 | 2017-11-03 | 太原理工大学 | The assembled combination beam and construction method of replaceable antifatigue damage member |
| CN206667037U (en) * | 2017-03-28 | 2017-11-24 | 宁波金蛟龙重工钢构有限公司 | Replaceable prefabricated assembled combined beam structure |
| CN107447921A (en) * | 2017-09-13 | 2017-12-08 | 清华大学 | High ductile steel-the concrete combination beam of detachable assembling type |
| CN107780334A (en) * | 2017-10-25 | 2018-03-09 | 中铁大桥勘测设计院集团有限公司 | A kind of combination beam prestress application attachment structure and its installation method |
-
2018
- 2018-05-15 CN CN201810463280.8A patent/CN108660948A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10102603A (en) * | 1996-09-26 | 1998-04-21 | Matsushita Electric Works Ltd | Connecting construction between column and beam |
| CN202595644U (en) * | 2012-06-06 | 2012-12-12 | 刘红莹 | Anti-dazzle device for road |
| CN203878753U (en) * | 2014-04-29 | 2014-10-15 | 东南大学 | High-strength bolt shear key structure |
| CN206667037U (en) * | 2017-03-28 | 2017-11-24 | 宁波金蛟龙重工钢构有限公司 | Replaceable prefabricated assembled combined beam structure |
| CN107313540A (en) * | 2017-07-24 | 2017-11-03 | 太原理工大学 | The anti-buckling assembled combination beam of fire prevention and construction method |
| CN107313347A (en) * | 2017-07-24 | 2017-11-03 | 太原理工大学 | The assembled combination beam and construction method of replaceable antifatigue damage member |
| CN107447921A (en) * | 2017-09-13 | 2017-12-08 | 清华大学 | High ductile steel-the concrete combination beam of detachable assembling type |
| CN107780334A (en) * | 2017-10-25 | 2018-03-09 | 中铁大桥勘测设计院集团有限公司 | A kind of combination beam prestress application attachment structure and its installation method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109487699A (en) * | 2018-12-07 | 2019-03-19 | 东南大学 | A kind of steel plate support-skew nailing combined type interface connection steel-UHPC thin plate combined structure system |
| CN109487698A (en) * | 2018-12-07 | 2019-03-19 | 东南大学 | A kind of steel plate support-skew nailing combined type quickly connects steel-UHPC combined structure system |
| CN109487698B (en) * | 2018-12-07 | 2020-11-27 | 东南大学 | Steel plate support-inclined nail combined type quick connection steel-UHPC combined structure system |
| CN110067184A (en) * | 2019-05-14 | 2019-07-30 | 华南理工大学 | A kind of pin device constraining curved beam bridges horizontal displacement |
| CN114033205A (en) * | 2021-11-05 | 2022-02-11 | 北京航空航天大学 | Method for improving performance of existing steel-concrete composite beam |
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Application publication date: 20181016 |
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