CN105625185B - The arch springing construction method of bowstring arch bridge - Google Patents
The arch springing construction method of bowstring arch bridge Download PDFInfo
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- CN105625185B CN105625185B CN201510962459.4A CN201510962459A CN105625185B CN 105625185 B CN105625185 B CN 105625185B CN 201510962459 A CN201510962459 A CN 201510962459A CN 105625185 B CN105625185 B CN 105625185B
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- hole
- concrete
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- space
- vibrator
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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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
Abstract
The present invention relates to a kind of arch springing construction method of bowstring arch bridge.This method comprises the following steps：Step 1, the fixing steel plate of through hole is provided with respectively in the both sides of the arch springing of arch rib to be formed and clamps the space of arch springing；Step 2, bar-mat reinforcement is set in space, bar-mat reinforcement is fixedly linked with arch springing and fixing steel plate, and deviates the through hole on fixing steel plate；Step 3, template is set in the outside of fixing steel plate, hole of vibrating corresponding with through hole is configured with template；Step 4, by vibrating hole and the vibrator of vibrating spear is inserted into space by through hole, concrete is then injected into space, vibrator vibrates to the concrete in space；Step 5, end of vibrating, vibrator is stayed in the space.The method according to the invention, can be by the compactness of the arch springing for greatly improving arch rib and the concrete of bridge floor connection, so that arch is more solid with the connection of bridge floor.
Description
Technical field
The present invention relates to the arch springing construction method of method for bridge construction, more particularly to bowstring arch bridge.
Background technology
Bowstring arch bridge is one kind of arch bridge, and compared with common bridge, the good appearance of bowstring arch bridge, cost is relatively low, and
And the height of bowstring arch bridge under the premise of meeting that navigation requires, can to greatest extent reduce floor elevation 1/50 or so of across footpath,
Shorten access bridge length, save construction costs.
Similarly, bowstring arch bridge includes bridge floor and the arch above bridge floor.The both ends of arch then pass through armored concrete
Together with being permanently connected with bridge floor, so as to realize that arch and bridge floor bear load jointly.However, how will encircle with bridge floor stably
Connect together, be vital for bowstring arch bridge.
The content of the invention
In view of the above-mentioned problems, the present invention proposes a kind of arch springing construction method of bowstring arch bridge.The method according to the invention,
Can be by the compactness of the arch springing for greatly improving arch rib and the concrete of bridge floor connection, so that the connection of arch and bridge floor is more
Add solid.
The arch springing construction method of the bowstring arch bridge of the present invention comprises the following steps：Step 1, in the both sides of the arch springing of arch rib
The fixing steel plate of through hole is provided with respectively clamps the space of arch springing to be formed；Step 2, bar-mat reinforcement, reinforcing bar are set in space
Net is fixedly linked with arch springing and fixing steel plate, and deviates the through hole on fixing steel plate；Step 3, set on the outside of fixing steel plate
Template is put, hole of vibrating corresponding with through hole is configured with template；Step 4, by vibrate hole and through hole by the vibrator of vibrating spear
It is inserted into space, concrete is then injected into space, vibrator vibrates to the concrete in space；Step 5, shake
End is smash, vibrator is stayed in space.
The method according to the invention, by setting through hole on fixing steel plate, and hole of vibrating is set in template, can
The vibrator of vibrating spear is inserted near arch springing through bar-mat reinforcement.So, when injecting concrete, can be to arch springing around
Concrete vibrated, be closely knit.In addition, after end of vibrating, vibrator can be stayed in into appearance by cutting off the sebific duct of vibrating spear
Receiving has in the space of arch springing, can not only can so avoid taking out the difficulty that vibrator is faced, and can avoid because taking out
Vibrator and cause the concrete around arch springing to be redistributed again, and then destroy concrete density the problem of.Thus, according to
The method of the present invention, even if there are intensive bar-mat reinforcement at arch springing, concrete that also can well at closely knit arch springing, so
It has been considerably improved the robustness that arch is connected with bridge floor.
In one embodiment, it is provided with multiple through holes in each template, and the through hole of the central region of template
Quantity is more than the quantity of the through hole of lower area.Applicant has been surprisingly found that, the lowest part of vibrated concrete, can not make bottom
Stone rises, so as to improve the compaction rate of concrete on the whole.However, vibrated in the middle part of concrete, energy
Stone is set to be evenly distributed in concrete rather than be deposited to the bottom of concrete, it is possible thereby to improve concrete on the whole
Compaction rate, this is extremely important for improving the robustness that is connected with bridge floor of arch.
In one embodiment, in step 1, support member is set on bridge floor, and the arch springing of arch rib is supported on support
On part.By setting support member, in work progress, it can prevent arch springing from destroying bridge floor.In one embodiment, in step 2
In, the bar-mat reinforcement in space includes horizontal bar-mat reinforcement, vertical bar-mat reinforcement and inclined bar-mat reinforcement.Bar-mat reinforcement will can support
Part, arch rib include arch springing and fixing steel plate is stably attached to together.So, it can prevent from injecting concrete and vibrate mixed
During solidifying soil, support member, arch rib include arch springing and fixing steel plate scatters, and causes construction to fail.
In one embodiment, in step 4, vibrator is set in a horizontal manner.This way it is possible to avoid vibrating spear
Length of the sebific duct in concrete.Thus, the length of the sebific duct finally stayed in concrete is also most short, and this also contributes to improve arch
The robustness being connected with bridge floor.
In one embodiment, in step 4, concrete is successively injected into space, treats that handled concrete layer is close
After reality, next layer concrete is injected.In another embodiment, in step 4, it is located at by the way that vibrator is tied up on bar-mat reinforcement
And it is set to vibrate the concrete in the range of reservation.The vibrator and construction in layer of this set can efficiently will be corresponding
The concrete progress of layer is closely knit, so as to improve efficiency of construction and construction quality.
In one embodiment, after handled concrete layer is closely knit, before next layer concrete is injected, will vibrate
Head is stayed in concrete and using the corresponding hole of vibrating on perforations adding plate stopend.In one embodiment, vibrate the shape in hole
Shape is to be gradually reduced along the orient diameter towards the space, and the shape of perforations adding plate and the shape in hole of vibrating match.So, pacifying
When filling perforations adding plate, perforations adding plate can be imposed severe pressure and hole of vibrating can be passed through to enter concrete without worry perforations adding plate
Inside, it is possible thereby to farthest reduce the gap between perforations adding plate and template, this is for improving the concrete after being molded
Surface aesthetics it is extremely important.
In one embodiment, the method being spot welded with many places welds together perforations adding plate with template.So, installing
After perforations adding plate, it can prevent perforations adding plate from deforming, this also contributes to the surface aesthetics for improving the concrete after being molded.
Compared with prior art, the advantage of the invention is that：(1) by setting through hole on fixing steel plate, and in mould
Hole of vibrating is set on plate, the vibrator of vibrating spear can be inserted near arch springing through bar-mat reinforcement.So, in injection coagulation
When native, the concrete around arch springing can be vibrated, be closely knit.(2) vibrate after end, can be by cutting off the sebific duct of vibrating spear
And stay in vibrator in the space for accommodating arch springing, it can not only can so avoid taking out the difficulty that vibrator is faced, and
And can avoid causing the concrete around arch springing to be redistributed again because taking out vibrator, and then destroy concrete density
The problem of.
Brief description of the drawings
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein：
Fig. 1 schematically the reality arch springing of the embodiment of the method according to the invention, support member and fixing steel plate
Position.
Fig. 2 schematically the reality embodiment of the method according to the invention there is provided the state of bar-mat reinforcement.
Fig. 3 schematically the reality embodiment of the method according to the invention there is provided the state of template.
Fig. 4 schematically reality structures of the template of the embodiment of the method according to the invention.
Fig. 5 schematically reality structures of the perforations adding plate of the embodiment of the method according to the invention.
In the accompanying drawings, identical part uses identical reference.Accompanying drawing is not according to the ratio of reality.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
When the method according to the invention is constructed, first have to the arch springing 2 of arch rib 1 being arranged on the predetermined of bridge floor 3
Opening position.Preferably, as shown in figure 1, support member 4 can be pre-set in the pre-position, then arch springing 2 is supported on again
In support member 4.Support member 4 can avoid arch springing 2 from destroying bridge floor 3.Support member 4 can for example be made up of steel plate.Next, in arch springing
2 both sides set fixing steel plate 5 respectively (only signal row ground is real one piece in Fig. 1).Folder is formd between two pieces of fixing steel plates 5
The firmly space 7 of arch springing 2.It should be understood that support member 4 is also in the space.Multiple through holes 6 are configured with fixing steel plate 5,
These through holes 6 are used to set vibrating spear 33, and this will be described below.
After support member 4, arch springing 2 and fixing steel plate 5 is set up, substantial amounts of bar-mat reinforcement 21 is set into space 7, and
Bar-mat reinforcement 21 and support member 4, arch springing 2 and fixing steel plate 5 are fixedly connected together, as shown in Figure 2.So, support member
4th, arch springing 2 and fixing steel plate 5 are formed an entirety with bar-mat reinforcement 21.Bar-mat reinforcement 21 may include horizontal bar-mat reinforcement, erect
Straight bar-mat reinforcement 212 and inclined bar-mat reinforcement 213.It should be noted that the setting of bar-mat reinforcement 21 should be avoided on fixing steel plate 5
Through hole 6.
Next, template 31 is set in the outside of fixing steel plate 5, as shown in Figure 3.It is configured with template 31 and through hole 6
Corresponding hole 41 of vibrating.Vibrate hole 41 be equally applicable to set vibrating spear 33, this will be described below.When setting template 31,
It should be noted that the hole 41 that makes to vibrate is alignd with through hole 6.Fig. 4 shows the structure of template 31, in Fig. 4 dotted line represent bar-mat reinforcement 21 with
And other structure as described above, repeat no more here.
Next, by vibrating hole 41 and the vibrator of vibrating spear 33 is inserted into space 7 by through hole 2 from outside, so
Injection concrete in backward space 7.Start vibrating spear 33, to be vibrated to the concrete in space 7.Reaching concrete
After predetermined compactness, stop vibrating spear 33, end of vibrating.The sebific duct of vibrating spear 33 is cut off, vibrator is stayed in space 7.
Vibrate hole 41 and through hole 2 is also used as peep hole and feed supplement hole.When the concrete in space 7 is somewhat insufficient,
Can be by vibrating hole 41 and through hole 2 easily fills into concrete.
In order to further in space 7 concrete carry out it is closely knit, multiple holes 41 of vibrating are provided with each template 31,
And the quantity of the through hole of the central region 51 of template 31 is more than the quantity of the through hole of lower area 52.Even, can not be under
Through hole is set in portion region 52.It has been found that when the concrete to middle level vibrates, the stone in concrete can be avoided
Bottom is sunk to, but middle level can be remained essentially in until concrete setting.Therefore set in the central region 51 of template 31
More hole 41 of vibrating more effectively can carry out closely knit to concrete on the whole.It should be understood that the middle part of fixing steel plate 5
Quantity of the quantity of the through hole in region also greater than the through hole of lower area.
It is highly preferred that setting vibrator in a horizontal manner, i.e., vibrator is inserted through through hole 6 in the horizontal direction and vibrated
Hole 41.Compared with other modes set vibrator, horizontal mode sets vibrator to cause the sebific duct of vibrator to enter concrete
Interior length is shorter.After sebific duct is cut off, with regard to shorter, this is also contributed to the length of the sebific duct stayed in vibrator in concrete
Improve the compactness of concrete.
In a manner of successively concrete can be successively injected into space 7.It is located in such a case, it is possible to which vibrator is tied up
It is set to vibrate the concrete in the range of reservation on bar-mat reinforcement.For example, according to being pre-designed, vibrator is fixed
In precalculated position.When injecting concrete, the concrete of respective amount is injected only for each fixed position.Thus, it is each
The concrete of layer can be vibrated by vibrator, be closely knit, thus can further improve the compactness of concrete on the whole.This
Outside, after the concrete compaction only in lower floor precalculated position, then concrete is injected into adjacent upper precalculated position.It should be understood that
It is that " after the concrete compaction in lower floor precalculated position, injecting concrete into adjacent upper precalculated position " mentioned here is
Refer to concrete density in lower floor precalculated position and reach requirement and before the hardening, just into adjacent upper precalculated position
Inject concrete.The determination mode of the compactness of concrete is well known to the skilled artisan in the art, is repeated no more here.
After handled concrete layer is closely knit, it is necessary to which vibrator is stayed in into space before next layer concrete is injected
It is interior and use the corresponding hole 41 of vibrating on the stopend 31 of perforations adding plate 53.Preferably, vibrate the truncated cone-shaped that is shaped as in hole 41, mend
The shape of orifice plate 53 and the shape in hole 41 of vibrating match (as shown in Figure 5).During template 31 is used, the small end in hole 41 of vibrating
Towards space 7.So, larger power can be applied to perforations adding plate 53 to block hole 41 of vibrating, without worrying that perforations adding plate 53 is worn
Cross the inside that template 31 enters concrete.Gap between perforations adding plate 53 and template 31 can be also reduced, this for improve into
The surface aesthetics of concrete after type are extremely important.In addition, also in the method for many places spot welding by perforations adding plate 53 and template 31
Weld together.So it can prevent perforations adding plate 31 from deforming, this also contributes to the surface aesthetics for improving the concrete after being molded.
Although by reference to preferred embodiment, invention has been described, is not departing from the situation of the scope of the present invention
Under, various improvement can be carried out to it and part or part therein can be replaced with equivalent.Especially, as long as being not present
The conflict of structure and step, the every technical characteristic being previously mentioned in each embodiment can combine in any way.This hair
It is bright to be not limited to specific embodiment disclosed herein, but all technical schemes including falling within the scope of the appended claims.
Claims (10)
1. the arch springing construction method of bowstring arch bridge, comprises the following steps：
Step 1, the fixing steel plate of through hole is provided with respectively in the both sides of the arch springing of arch rib to be formed and clamps the sky of the arch springing
Between；
Step 2, bar-mat reinforcement is set in the space, and the bar-mat reinforcement is fixedly linked with arch springing and fixing steel plate, and deviates
Through hole on the fixing steel plate；
Step 3, template is set in the outside of the fixing steel plate, vibrate corresponding with the through hole is configured with the template
Hole；
Step 4, hole is vibrated and the vibrator of vibrating spear is inserted into the space by through hole by described, then to the sky
Interior injection concrete, the vibrator vibrate to the concrete in the space；
Step 5, end of vibrating, the vibrator is stayed in the space.
2. according to the method for claim 1, it is characterised in that multiple through holes are provided with each template, and
The quantity of the through hole of the central region of the template is more than the quantity of the through hole of lower area.
3. according to the method for claim 2, it is characterised in that in the step 4, shaken in a horizontal manner described in setting
Smash head.
4. according to the method for claim 3, it is characterised in that in the step 1, support member is set on bridge floor, and
And the arch springing of the arch rib is supported on the support member.
5. according to the method for claim 4, it is characterised in that in the step 2, the bar-mat reinforcement bag in the space
Include horizontal bar-mat reinforcement, vertical bar-mat reinforcement and inclined bar-mat reinforcement.
6. the method according to any one of claim 1 to 5, it is characterised in that in the step 4, to the space
Concrete is inside successively injected, after handled concrete layer is closely knit, injects next layer concrete.
7. according to the method for claim 6, it is characterised in that in the step 4, set by the way that the vibrator is tied up
It is set to vibrate the concrete in the range of reservation on bar-mat reinforcement.
8. according to the method for claim 7, it is characterised in that next injecting after handled concrete layer is closely knit
Before layer concrete, the vibrator is stayed in the concrete and blocks shaking accordingly in the template using perforations adding plate
Smash hole.
9. according to the method for claim 8, it is characterised in that the direction being shaped as towards the space in the hole of vibrating
Reduced diameter, the shape of the perforations adding plate and the shape in the hole of vibrating match.
10. according to the method for claim 9, it is characterised in that in the method for many places spot welding by the perforations adding plate and institute
Template is stated to weld together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510962459.4A CN105625185B (en) | 2015-12-22 | 2015-12-22 | The arch springing construction method of bowstring arch bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510962459.4A CN105625185B (en) | 2015-12-22 | 2015-12-22 | The arch springing construction method of bowstring arch bridge |
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| CN105625185A CN105625185A (en) | 2016-06-01 |
| CN105625185B true CN105625185B (en) | 2017-11-28 |
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| CN109853353B (en) * | 2019-03-20 | 2021-01-08 | 广州市市政工程设计研究总院有限公司 | Spatial special-shaped arch bridge and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201144396Y (en) * | 2007-12-26 | 2008-11-05 | 中铁二院工程集团有限责任公司 | Deck tied steel anchor box |
| CN102286929B (en) * | 2011-09-02 | 2013-08-28 | 大连理工大学 | Hinged arch springing of arch center |
| CN203284725U (en) * | 2013-06-05 | 2013-11-13 | 中交第一公路勘察设计研究院有限公司 | Steel corrugated plate circular arc arch bridge arch foot fixing structure |
| KR101636679B1 (en) * | 2014-06-02 | 2016-07-06 | 박성빈 | A arch bridge using a ceramic block |
| CN204370295U (en) * | 2014-12-12 | 2015-06-03 | 江苏省交通科学研究院股份有限公司 | The arch springing of lower support type concrete-filled steel tube tied arch |
| CN204530422U (en) * | 2014-12-24 | 2015-08-05 | 中交第二公路勘察设计研究院有限公司 | A kind of for the syndeton of FRP pipe concrete arch ring with basis |
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