CN108166384A - A kind of novel super-high performance concrete joint construction for expansion joint beam-ends - Google Patents
A kind of novel super-high performance concrete joint construction for expansion joint beam-ends Download PDFInfo
- Publication number
- CN108166384A CN108166384A CN201810134661.1A CN201810134661A CN108166384A CN 108166384 A CN108166384 A CN 108166384A CN 201810134661 A CN201810134661 A CN 201810134661A CN 108166384 A CN108166384 A CN 108166384A
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- China
- Prior art keywords
- joint
- high performance
- performance concrete
- construction
- expansion joint
- Prior art date
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 42
- 239000004574 high-performance concrete Substances 0.000 title claims abstract description 19
- 239000011374 ultra-high-performance concrete Substances 0.000 claims abstract description 18
- 238000003466 welding Methods 0.000 claims abstract description 13
- 230000002787 reinforcement Effects 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 33
- 239000010959 steel Substances 0.000 claims description 33
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 9
- 239000000945 filler Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
-
- 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
- E01D19/06—Arrangement, construction or bridging of expansion joints
Abstract
The present invention provides a kind of novel super-high performance concrete joint construction for expansion joint beam-ends, connector including two joint bodies of ultra-high performance concrete joint body and connection for being set to two adjacent sections construction beam beam-ends, joint body includes the first built-in fitting and telescopic device main body, first built-in fitting is embedded in beam-ends and extend out to joint body in advance, telescopic device main body is embedded in joint body, and be connected with connector in advance in a manner of with the first connector lateral alternate.All welding processes of this connector are prefabricated in the factory completion, cancel the regular reinforcement through seam profile, realize scene " zero welding ", enormously simplify the construction technology at expansion joint, telescopic device is precisely installed in place, gives full play to the design function of telescopic device；And joint filler material, using ultra-high performance concrete, the high-tensile and excellent endurance quality, Life Cycle Cost that can give full play to ultra-high performance concrete are substantially reduced, service life improves.
Description
Technical field
The present invention relates to technical field of bridge construction, more particularly, to a kind of novel super-high performance for expansion joint beam-ends
Concrete joint constructs.
Background technology
Bridge structure caused by temperature change is expanded with heat and contract with cold the destruction to bridge structure in order to prevent, meets beam body, beam-ends
Telescopic displacement demand, expansion joint is widely used during bridge, road surface or architecture construction.The power of existing Expansion Joint filler
Poor-performing is learned, ensures the crack resistance of connector by adding in reinforcing bar, on the one hand, site operation difficulty is increased, on the other hand,
Long-term effect is difficult to ensure that.The precise requirements that conventional bridge extension joint docks head structure during construction are higher,
And construction is cumbersome, and construction effect is caused to be extremely difficult to target.
Invention content
The technical problem to be solved by the present invention is to：Overcome the deficiencies of the prior art and provide a kind of intensity height, tensile property
Good, the easy for construction novel super-high performance concrete joint construction for being quickly used for expansion joint beam-ends.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of novel super-high performance concrete joint construction for expansion joint beam-ends, including being set to two adjacent sections construction beam beam
The connector of two joint bodies of ultra-high performance concrete joint body and connection at end, joint body include the first built-in fitting and stretch
Compression apparatus main body, the first built-in fitting are embedded in beam-ends and extend out to joint body in advance, telescopic device main body with the first built-in fitting position
The mode being staggered is put to be embedded in joint body in advance, and with connector be connected.
In work progress, adjacent two beam-ends sets expansion joint preformed groove, and the first built-in fitting part is embedded in beam-ends, partly stretches in advance
Go out to expansion joint preformed groove, after telescopic device main body is placed into expansion joint preformed groove, be filled using ultra-high performance concrete,
Form joint body.Joint body both ends expansion joint is connected by connector, and connector is the rigid structure or close of reserving gaps
The flexible structure closed realizes that prefabricated beam body is expanded with heat and contract with cold caused by temperature change.
Joint body is poured using ultra-high performance concrete, the advantages that making full use of its high-tensile and durability, greatly
Increase adjunction head Acceptable life, so as to reduce Life Cycle Cost.
It is anti-to reach increase by the first built-in fitting, telescopic device main body and ultra-high performance concrete cooperative bearing by the present invention
The effect of tensile strength, built-in fitting are completed by prefabrication, in work progress, without carrying out site welding or other reinforcement by connection
Scene " zero welding " is realized in operation, enormously simplifies the working procedure of connector so that telescopic device can be precisely installed in place,
Give full play to the design function of telescopic device.
Further, telescopic device main body is arranged with the first built-in fitting lateral alternate.
Further, the telescopic device main body bottom end is staggered difference in height not less than the first built-in fitting with the first built-in fitting top
The 1/2 of width.
It is staggeredly arranged on first built-in fitting and telescopic device main body are vertical, the distance offset vertically is compared to the first built-in fitting
Width should not be too small, avoid when the first built-in fitting and telescopic device main body cooperative bearing caused expansion joint reserve groove location with
Beam-ends beam slab or parados position are staggered.
Further, the telescopic device main body includes anchor slab, is welded on the dowel of anchor slab side and is welded on anchor slab and is another
Side shear connections peg, connector are connect with anchor slab end.
Further, the welding of anchor slab and dowel or shear connections peg is prefabricated in the factory completion, so as to reduce site operation
Operation process.
Further, the connector is shaped steel, is connected between the shaped steel of expansion joint both ends by flexible concertina part.
The flexible concertina part is preferably rubber strip.Flexible concertina part both ends shape matches with shaped steel accommodating chamber shape,
So as to which flexible concertina part closely be engaged with shaped steel；Flexible concertina part interior thickness is smaller, relatively other more yielding appearances in region
Pliable, in beam-ends process of expansion and contraction, flexible concertina part is squeezed bending or is stretched power and is stretched；Flexibility is stretched
The snap-in function of contracting part and shaped steel effectively prevents external environment sundries and enters inside expansion joint simultaneously, ensures inside expansion joint
Effective telescopic movable space, avoids beam-ends crack caused by thermal boundary shrinkage.
Further, also it is embedded with anticracking bar-mat reinforcement in the cast-in-place ultra-high performance concrete joint body.Anticracking bar-mat reinforcement
It is laid in above telescopic device main body.
Further, the connector is broach steel plate.
Specifically, the groove of broach steel plate is placed in setting on adjacent two beam-ends, on the joint body of side with telescopic device master
The broach steel plate length of body connection is more than groove length, is protruded with respect to the joint body；It is filled on opposite side joint body with flexible
The broach steel plate length for putting main body connection is less than groove length, is recessed with respect to the joint body；During combination, long end broach steel plate is stretched
To opposite side joint body, there are certain gap, the gap and two beam-ends between the broach steel plate of opposite side joint body
Between gap position be staggered, it is of same size or roughly the same, realize beam-ends expand with heat and contract with cold, and can effectively avoid dust, rainwater
Sundries is waited to enter beam-ends gap, influence beam-ends quality.
Further, the telescopic device main body is at least one screw rod, and screw rod is bolted to connection with broach steel plate.
Specifically, pre embedded bolt top is fixedly connected on by pre-embedded bolt on broach steel plate, the bending of pre embedded bolt bottom end,
When connection sets multiple pre embedded bolts on broach steel plate, the overbending direction of pre embedded bolt can be identical or different；Bending side
To it is different when, can be two adjacent pre embedded bolts be oppositely arranged, bending front end be in contact with each other.
Further, first built-in fitting is embedded bar.
Embedded bar part when pouring beam-ends is embedded in beam-ends in advance, in cast-in-place joint body, is stretched out with respect to beam-ends
Part fully acted on ultra-high performance concrete and telescopic device main body, improve beam-ends connect with joint body it is secured
Property.
Further, the first built-in fitting further includes the pre- one group of horizontal stroke for being embedded in beam body, being arranged in parallel positioned at embedded bar bottom end
Wear reinforcing bar.
Beneficial effects of the present invention：Junction portion filler is cast-in-place ultra-high performance concrete, increases the tensile strength of connector
And durability, so as to increase the service life of construction building, reduce the construction building local fracture caused by beam body is expanded with heat and contract with cold
Performance impairment；First built-in fitting effectively connects beam-ends and joint body, and telescopic device main body is fixedly connected with connector, ensures to connect
While head stress, cancel site operation center tap end face welded reinforcement process, simplify work progress, reduce construction intensity；The
One built-in fitting, telescopic device main body and ultra-high performance concrete cooperative bearing, increase joint body and beam-ends, contact of mating formation it is steady
It is qualitative, increase tensile strength；Telescopic device main body welding portion is welded by prefabrication and completed, and ensures construction intensity, simultaneously
Accelerate construction progress；Joint construction is widely portable to bridge, highway, construction wall or the application at other beam-ends expansion joints.
Description of the drawings
Fig. 1 is that a kind of structure of novel super-high performance concrete joint construction for expansion joint beam-ends in embodiment 1 is shown
It is intended to；
Fig. 2 is the side view of side joint body in Fig. 1；
Fig. 3 is a kind of structure diagram of novel super-high performance concrete joint construction for expansion joint beam-ends in embodiment 2.
In figure:1-cross reinforcing bar, 2-embedded bar, 3-shear connections peg, 4-anticracking bar-mat reinforcement, 5-bridge floor,
6-beam body, 7-dowel, 8-anchor slab, 9-joint body, 10-shaped steel, 11-screw rod, 12-broach steel plate.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments.
Embodiment 1
With reference to attached drawing：A kind of novel super-high performance concrete joint construction for expansion joint beam-ends of the present embodiment, is applied with bridge
For work, two joint bodies 9 of ultra-high performance concrete joint body 9 and connection including being set to two adjacent sections construction beam end
Connector, joint body 9 include dowel 7, anchor slab 8 and shear connections peg 3.In the construction process, between adjacent two beam-ends
Reserved expansion joint preformed groove, the part in 6 work progress of beam body of embedded bar 2 is pre-buried in 6 end of beam body, and extend out to upwards
Preformed groove is stitched in contracting, and synchronizing pre-buried two be arranged in parallel in 2 bottom beam body 6 of embedded bar crosses reinforcing bar 1.Dowel 7, anchor slab 8, type
After the completion of welding job between steel 10 and shear connections peg 3 is prefabricated in the factory, it is embedded in expansion joint preformed groove in advance, wherein, anchor
Weld dowel 7, opposite side welding shear connections peg 3,8 end of anchor slab welding shaped steel 10 in 8 side of plate.When pre-buried, 7 bottom end of dowel
It laterally and is vertically staggeredly arranged with 2 top of embedded bar, the longitudinal difference in height being staggered is not less than the 1/ of 2 width of embedded bar
2, shearing resistance connection peg is arranged on anchor slab 8 and towards 2 side of embedded bar.8 top of anchor slab is also embedded with anticracking bar-mat reinforcement
4.After the completion of pre-buried, the cast-in-place ultra-high performance concrete filler in the preformed groove of expansion joint, molding obtains joint body 9.Connector sheet
It is connected between the shaped steel 10 at 9 both ends of body by rubber tape seals, while expansion joint is sealed, and can guarantee that beam-ends expands with heat and contract with cold
Caused volume freely changes.9 height of joint body is identical with 5 height of bridge floor.
The present embodiment welding process, without any welding process, realizes scene during the prefabricated completion of engineering, site operation
" zero welding ", greatly reduces construction volume, improves construction efficiency, shorten the construction time so that telescopic device can be installed precisely
In place, the design function of telescopic device is given full play to.Meanwhile pass through dowel 7, anchor slab 8, shear connections peg 3, anticracking bar-mat reinforcement
Cooperative bearing effect between 4 and ultra-high performance concrete, enhances the tensile capacity of connector, and the lasting of extending connector uses effect
Fruit.
Embodiment 2
With reference to attached drawing, a kind of novel super-high performance concrete for expansion joint beam-ends of the present embodiment constructs, including being set to phase
The connector of two joint bodies 9 of ultra-high performance concrete joint body 9 and connection of two section construction beam end of neighbour, joint body 9
Including pre embedded bolt 11, the bending of 11 bottom end of pre embedded bolt, 11 bottom end bending part of half of screw is opposite two-by-two, and bending front end is each other
Contact.In the construction process, adjacent two beam-ends reserves expansion joint preformed groove, and the part in 6 work progress of beam body of embedded bar 2 is pre-
It 6 end of beam body is embedded in, and extend out to expansion joint preformed groove upwards, pre-buried be arranged in parallel is synchronized in 2 bottom beam body 6 of embedded bar
Two are crossed reinforcing bar 1.Pre embedded bolt 11 with 2 top of embedded bar is horizontal and vertical is staggeredly arranged, the longitudinal direction height being staggered
Difference is not less than the 1/2 of 2 lateral distance of embedded bar.At expansion joint, preformed groove pours ultra-high performance concrete filler, and molding obtains
Joint body 9,9 upper end mounting broach steel plate 12 of joint body, and 11 top of pre embedded bolt is passed through into bolt and broach steel plate 12
It is fixedly connected.Long end broach steel plate 12 and short end broach steel plate 12, long end broach steel are connected on two neighboring joint body 9 respectively
Plate 12 stretches to 12 side of short end broach steel plate, and the gap reserved between two broach steel plates 12 is identical with expansion joint gap width, seam
Gap is located at the top of 12 place joint body 9 of short end broach steel plate, is staggered with expansion joint position, external impurities is avoided to enter flexible
In seam；During beam-ends expands with heat and contract with cold volume change, broach steel plate 12 is synchronized with the movement, and enough reserving gaps ensure beam-ends body
Broach steel plate 12 has enough spaces during product expansion.9 height of joint body is identical with 5 height of bridge floor.
Claims (10)
1. a kind of novel super-high performance concrete joint construction for expansion joint beam-ends, it is characterised in that：Including being set to phase
Neighbour two saves the connector of two joint bodies of ultra-high performance concrete joint body and connection of construction beam beam-ends, and joint body includes
First built-in fitting and telescopic device main body, the first built-in fitting are embedded in beam-ends and extend out to joint body in advance, telescopic device main body with
The mode being staggered with the first built-in fitting position is embedded in joint body, and be connected with connector in advance.
2. a kind of novel super-high performance concrete joint construction for expansion joint beam-ends as described in claim 1, feature
It is：Telescopic device main body is arranged with the first built-in fitting lateral alternate.
3. a kind of novel super-high performance concrete joint construction for expansion joint beam-ends as claimed in claim 1 or 2, special
Sign is：The difference in height of the telescopic device main body bottom end and the first built-in fitting top is not less than the 1/2 of the first built-in fitting width.
4. a kind of novel super-high performance concrete joint construction for expansion joint beam-ends as claimed in claim 3, feature
It is：The telescopic device main body includes anchor slab, is welded on the dowel of anchor slab side and is welded on anchor slab opposite side shear connections
Peg, connector are connect with anchor slab end.
5. a kind of novel super-high performance concrete joint construction for expansion joint beam-ends as claimed in claim 4, feature
It is：The welding of anchor slab and dowel or shear connections peg is prefabricated in the factory completion.
6. a kind of novel super-high performance concrete joint construction for expansion joint beam-ends as claimed in claim 5, feature
It is：The connector is shaped steel, is connected between the shaped steel of expansion joint both ends by flexible concertina part.
7. a kind of novel super-high performance concrete joint construction for expansion joint beam-ends as claimed in claim 6, feature
It is：Anticracking bar-mat reinforcement is also embedded in the cast-in-place ultra-high performance concrete joint body.
8. a kind of novel super-high performance concrete joint construction for expansion joint beam-ends as claimed in claim 3, feature
It is：The connector is broach steel plate.
9. a kind of novel super-high performance concrete joint construction for expansion joint beam-ends as claimed in claim 8, feature
It is：The telescopic device main body is at least one screw rod, and screw rod is bolted to connection with broach steel plate.
10. a kind of novel super-high performance concrete joint construction for expansion joint beam-ends as claimed in claim 1 or 2,
It is characterized in that：First built-in fitting is embedded bar and crosses reinforcing bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134661.1A CN108166384A (en) | 2018-02-09 | 2018-02-09 | A kind of novel super-high performance concrete joint construction for expansion joint beam-ends |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134661.1A CN108166384A (en) | 2018-02-09 | 2018-02-09 | A kind of novel super-high performance concrete joint construction for expansion joint beam-ends |
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| Publication Number | Publication Date |
|---|---|
| CN108166384A true CN108166384A (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810134661.1A Pending CN108166384A (en) | 2018-02-09 | 2018-02-09 | A kind of novel super-high performance concrete joint construction for expansion joint beam-ends |
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| CN (1) | CN108166384A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108978454A (en) * | 2018-09-12 | 2018-12-11 | 安徽中源建设有限公司 | A kind of resistance to compression noise reduction elastic expansion joint |
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| CN206245209U (en) * | 2016-11-24 | 2017-06-13 | 宁波大学 | A kind of bridge floor attachment means for continuous deck simply supported girder bridge |
| CN107419658A (en) * | 2017-08-28 | 2017-12-01 | 绵阳九鼎智远知识产权运营有限公司 | A kind of bridge expansion joint installation |
| CN207933885U (en) * | 2018-02-09 | 2018-10-02 | 湖南大学 | A kind of novel super-high performance concrete joint construction for expansion joint beam-ends |
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2018
- 2018-02-09 CN CN201810134661.1A patent/CN108166384A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103741597A (en) * | 2014-01-24 | 2014-04-23 | 宁波路宝科技实业集团有限公司 | Bridge expansion joint device without transition section concrete and mounting method of bridge expansion joint device |
| CN203768800U (en) * | 2014-01-24 | 2014-08-13 | 宁波路宝科技实业集团有限公司 | Non-transition-section concrete bridge expansion joint device |
| CN104612050A (en) * | 2015-02-09 | 2015-05-13 | 福州大学 | Simply supported girder bridge floor continuous new construction and construction method |
| CN206245209U (en) * | 2016-11-24 | 2017-06-13 | 宁波大学 | A kind of bridge floor attachment means for continuous deck simply supported girder bridge |
| CN107419658A (en) * | 2017-08-28 | 2017-12-01 | 绵阳九鼎智远知识产权运营有限公司 | A kind of bridge expansion joint installation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108978454A (en) * | 2018-09-12 | 2018-12-11 | 安徽中源建设有限公司 | A kind of resistance to compression noise reduction elastic expansion joint |
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