CN109972531A - It is a kind of for improving the external prestressing device of Bailey beam falsework span - Google Patents
It is a kind of for improving the external prestressing device of Bailey beam falsework span Download PDFInfo
- Publication number
- CN109972531A CN109972531A CN201910393460.8A CN201910393460A CN109972531A CN 109972531 A CN109972531 A CN 109972531A CN 201910393460 A CN201910393460 A CN 201910393460A CN 109972531 A CN109972531 A CN 109972531A
- Authority
- CN
- China
- Prior art keywords
- door frame
- tumbler
- external prestressing
- bailey
- bailey beam
- 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.)
- Granted
Links
- 210000002435 tendon Anatomy 0.000 claims abstract description 16
- 238000004873 anchoring Methods 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 238000005452 bending Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 238000003754 machining Methods 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 3
- 235000015170 shellfish Nutrition 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000725 suspension Substances 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
- 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
Abstract
The invention discloses a kind of for improving the external prestressing device of Bailey beam falsework span, including for the Bailey beam group across navigable river or existing road, it further include external prestressing tendon, the lower section surrounding of the Bailey beam group is respectively arranged with support component, the lower beam longitudinally extended is installed among the lower end of Bailey beam group, the rear and front end lower part of lower beam is equipped with lower beam tumbler, door frame component is installed in the support component, door frame crossbeam tumbler is installed at the top of door frame component, the support component corresponds to and is equipped with jack immediately below door frame crossbeam tumbler, the external prestressing tendon is threaded through in lower beam tumbler, the left and right ends of external prestressing tendon rotating around cross door frame crossbeam tumbler and with corresponding jack telescopic end anchor connection.The across footpath of Bailey beam bracket greatly improved in structure of the invention connection and reasonable arrangement, and navigation and traffic safety below Bailey beam bracket can be effectively ensured, expand the application range of construction with brackets.
Description
Technical field
The present invention relates to concrete arch-type bridge beam structure construction with brackets technical fields, specially a kind of for improving shellfish thunder
The external prestressing device of beam falsework span.
Background technique
The construction of CFST Arch Bridge beam structure generally uses construction with brackets.When bridge is across navigable river or existing
When road, to guarantee that river Navigation capacity or road traffic, bracket can generally be designed as Bailey beam bracket.However when navigable is wanted
Ask wider or existing pavement of road wider and when traffic is busier, if the span of conventional Bailey beam bracket is excessive, bracket
Middle span deflexion will become very big, be unable to satisfy the linear requirement of beam structure.Under the linear requirement of beam structure, Support Method is applied
Work will be unable to implement, or emit very big security risk, sacrifice navigation channel or road demand, reduce the across footpath of Bailey beam bracket.
Convenient, fast, the efficient and inexpensive advantage of construction with brackets just can not be played in this way.
Summary of the invention
The purpose of the present invention is to provide a kind of for improving the external prestressing device of Bailey beam falsework span, with
Solve the problems mentioned above in the background art.Can it is biggish improve Bailey beam bracket across footpath, guarantee bracket below navigation and
Secured carriageway width.
To achieve the above object, the invention provides the following technical scheme:
It is a kind of for improving the external prestressing device of Bailey beam falsework span, including for across navigable river or
The Bailey beam group of existing road, further includes external prestressing tendon, and the lower section surrounding of the Bailey beam group is respectively arranged with support group
Part is equipped with the lower beam longitudinally extended among the lower end of Bailey beam group, and the rear and front end lower part of lower beam is equipped with lower beam
Tumbler is equipped with door frame component in the support component, is equipped with door frame crossbeam tumbler, the support at the top of door frame component
Component corresponds to and is equipped with jack immediately below door frame crossbeam tumbler, and the external prestressing tendon is threaded through lower beam tumbler
Interior, the left and right ends of external prestressing tendon rotating around door frame crossbeam tumbler excessively and anchor company with corresponding jack telescopic end
It connects.
As a further solution of the present invention: the support component includes that lateral anchoring beam and one group are used to support transverse direction
The foundation steel pipe pile of beam is anchored, is fixed with multiple longitudinal anchorings between the lateral anchoring beam of front end and the lateral anchoring beam of rear end
Beam, the Bailey beam group lower end left and right sides are anchored at respectively on corresponding longitudinal anchoring beam.
As a further solution of the present invention: the door frame component includes a pair of door frame column being fixed on laterally anchoring beam
With the support bracket of inclination arrangement, two door frame column tops are fixed with the door frame crossbeam longitudinally extended, and each door frame column top is left
Right two sides are respectively and fixedly provided with support bracket, support the lower end of bracket to be fixed on laterally anchoring beam, the centre of door frame crossbeam offers
Drag-line perforation, the side of drag-line perforation are fixed with door frame crossbeam tumbler, and the jack is arranged in the underface of drag-line perforation.
As a further solution of the present invention: wind hawser, the other end of wind hawser are respectively and fixedly provided at the top of each door frame column
It is anchored in the concrete foundation on bridge bearing platform or riverbank.
As a further solution of the present invention: distribution is welded with one group of " Ω " type along longitudinal direction among Bailey beam group lower end
Mounting assembly, the lower beam are threaded through in " Ω " type mounting assembly.
As a further solution of the present invention: " Ω " the type mounting assembly is made of multiple " Ω " type monomer members,
" Ω " type monomer members are process by bar bending.
As a further solution of the present invention: the lower beam includes a pair of of I-steel, the upper surface of two I-steel and
Lower end surface, which is respectively welded, is fixed with cover board, and the length of lower beam is longer than the width of Bailey beam group；Lower beam tumbler is by seamless steel
Pipe bending machining forms.
As a further solution of the present invention: the door frame column uses steel pipe, the structure of door frame crossbeam and the knot of lower beam
Structure is identical, and drag-line perforation is reserved among the cover board of door frame crossbeam, and door frame crossbeam tumbler is formed by seamless steel pipe bending machining.
Compared with prior art, external due to using the beneficial effects of the present invention are: compared with traditional Bailey beam bracket
The across footpath of Bailey beam bracket greatly improved in prestressing apparatus, and navigation and traffic safety below Bailey beam bracket can be effectively ensured,
Expand the application range of construction with brackets.
Detailed description of the invention
Fig. 1 is a kind of for improving the schematic view of facade structure of the external prestressing device of Bailey beam falsework span；
Fig. 2 is a kind of for improving the overlooking structure diagram of the external prestressing device of Bailey beam falsework span；
Fig. 3 is that a kind of structure of A-A section in external prestressing device for improving Bailey beam falsework span is shown
It is intended to；
Fig. 4 is a kind of knot of door frame component side view in external prestressing device for improving Bailey beam falsework span
Structure schematic diagram；
Fig. 5 is the knot that door frame component is overlooked in a kind of external prestressing device for improving Bailey beam falsework span
Structure schematic diagram；
Fig. 6 is a kind of structural representation of lower beam in external prestressing device for improving Bailey beam falsework span
Figure.
In figure: 1- Bailey beam group, 2- " Ω " type mounting assembly, 3- lower beam, 4- foundation steel pipe pile, 5- laterally anchor beam,
6- door frame column, 7- external prestressing tendon, 8- concrete foundation, 9- longitudinally wear by anchoring beam, 10- cover board, 11- I-steel, 12- drag-line
Hole, 301- lower beam steering block, 601- support bracket, 602- door frame crossbeam, 603- door frame crossbeam tumbler, 604- jack,
605- wind hawser.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1~6 are please referred to, the present invention provides a kind of technical solution: a kind of for improving Bailey beam falsework span
External prestressing device, including further including external prestressing tendon 7 for the Bailey beam group 1 across navigable river or existing road,
The lower section surrounding of the Bailey beam group 1 is respectively arranged with support component, is equipped among the lower end of Bailey beam group 1 and longitudinally extends
Lower beam 3, the rear and front end lower part of lower beam 3 are equipped with lower beam tumbler 301, door frame group are equipped in the support component
Part, door frame component top is equipped with door frame crossbeam tumbler 603, under the support component corresponds to door frame crossbeam tumbler 603 just
Side is equipped with jack 604, and the external prestressing tendon 7 is threaded through in lower beam tumbler 301, a left side for external prestressing tendon 7
Right both ends rotating around cross door frame crossbeam tumbler 603 and with corresponding 604 telescopic end anchor connection of jack.
When construction, the stretching force of external prestressing tendon 7 is adjusted by jack 604, thus to the downwarp of Bailey beam group 1 into
Row control.
Wherein, the support component includes the basic steel pipe that lateral anchoring beam 5 and one group are used to support laterally anchoring beam 5
Stake 4, the lateral anchoring beam 5 of front end and the lateral of rear end anchor and are fixed with multiple longitudinal anchoring beams 9 between beam 5, under Bailey beam group 1
The end left and right sides is anchored at respectively on corresponding longitudinal anchoring beam 9.
The door frame component includes a pair of door frame column 6 being fixed on laterally anchoring beam 5 and the support bracket being in tilted layout
601, the door frame crossbeam 602 longitudinally extended is fixed at the top of two door frame columns 6, each 6 top left and right sides of door frame column is fixed
There is support bracket 601, the lower end of support bracket 601 is fixed on laterally anchoring beam 5, and the centre of door frame crossbeam 602 offers drawing
Rope perforation 12, the side of drag-line perforation 12 are fixed with door frame crossbeam tumbler 603, and the jack 604 is arranged in drag-line perforation
12 underface.
The top of each door frame column 6 is respectively and fixedly provided with wind hawser 605, the other end of wind hawser 605 be anchored at bridge bearing platform or
In the concrete foundation 8 on riverbank.Ensure the lateral stability of door frame column 6 by wind hawser 605.
It may be preferred that distribution is welded with one group of " Ω " type mounting assembly 2, institute along longitudinal direction among 1 lower end of Bailey beam group
Lower beam 3 is stated to be threaded through in " Ω " type mounting assembly 2.
" Ω " the type mounting assembly 2 is made of multiple " Ω " type monomer members, and " Ω " type monomer members are by bar bending
It is process.The effect of " Ω " type mounting assembly 2 is can suspension lower beam 3 conveniently, safely.
It may be preferred that referring to Fig. 6, the lower beam 3 includes a pair of of I-steel 11, the upper surface of two I-steel 11 and
Lower end surface, which is respectively welded, is fixed with cover board 10, and the length of lower beam 3 is longer than the width of Bailey beam group 1；Lower beam tumbler 301 by
Seamless steel pipe bending machining forms.
It may be preferred that the door frame column 6 uses steel pipe, the structure of door frame crossbeam 602 is identical as the structure of lower beam 3, door
Be reserved among the cover board 10 of frame crossbeam 602 drag-line perforation 12, door frame crossbeam tumbler 603 by seamless steel pipe bending machining and
At.
Construction technology process of the invention is: prefabricated lower beam 3 is passed through pre-processed " Ω " type installation group
Part 2 and binding and fixing, using crane barge equipment lifting to 1 span centre bottom of Bailey beam group and by " Ω " type mounting assembly 2 and Bailey beam
1 firm welding of group, lower beam 3 at this time can be suspended to 1 lower section of Bailey beam group.In the both ends basis steel pipe for setting up Bailey beam group 1
One of laterally anchoring beam 5 is added in stake 4, laterally anchors 5 restocking gating trestle 6 of beam, and 6 two sides of door frame column utilize support bracket 602
Its stability is kept, door frame crossbeam 602 is set above two door frame columns 6.Certain radian is bent to using seamless steel pipe, is fabricated to
Lower beam steering block 301 and door frame crossbeam steering block 603, at the both ends of lower beam 3 by 301 firm welding of lower beam steering block,
By 603 firm welding of door frame crossbeam steering block on door frame crossbeam 602.External prestressing tendon 7 is passed through into lower beam steering block
301, by door frame crossbeam steering block 603, it is anchored in 604 telescopic end of jack, adjusts stretching force, door frame using jack 604
The lateral stability of column 6 is anchored in the concrete foundation 8 on bridge bearing platform or riverbank using wind cable 605.So far, for improving shellfish
The external prestressing device of thunder beam falsework across footpath installs.
After external prestressing device installation in place in the present embodiment for improving Bailey beam falsework across footpath, pre- tensioning
External prestressing tendon 7, is tensioned.Accordingly, it is further applied load in Bailey beam group 1 by existing arrangement and method for construction normal construction.According to shellfish
The downwarp situation of Lei Liang group 1 adjusts stretching force size using jack 604 at any time, and the downwarp of Bailey beam group 1 is controlled in demand
Within the scope of.After construction, the temporary load(ing) in Bailey beam group 1 is first unloaded, jack 604 is recycled to unload external prestressing
Dismounting can be completed in the stretching force of device.
Wherein, the governing equation for adjusting stretching force is:Wherein:W is that adjustment target is scratched
Degree；F is the stretching force of External prestressed rope 7, and L is the span of Bailey beam group 1 in Fig. 1；H is the height of door frame column 6 in Fig. 1；EI is
The bending stiffness (specifically can inquiry table 1) of Bailey beam group 1.
1 Bailey beam group geometrical property table of table
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. it is a kind of for improving the external prestressing device of Bailey beam falsework span, including for across navigable river or both
There is the Bailey beam group (1) of road, it is characterised in that: it further include external prestressing tendon (7), the lower section four of the Bailey beam group (1)
It is respectively arranged with support component week, the lower beam (3) longitudinally extended, lower beam (3) is installed among the lower end of Bailey beam group (1)
Rear and front end lower part be equipped with lower beam tumbler (301), door frame component, door frame component top are installed in the support component
Portion is equipped with door frame crossbeam tumbler (603), and the support component corresponds to and is equipped with thousand immediately below door frame crossbeam tumbler (603)
Jin top (604), the external prestressing tendon (7) are threaded through in lower beam tumbler (301), the left and right of external prestressing tendon (7)
Both ends rotating around cross door frame crossbeam tumbler (603) and with corresponding jack (604) telescopic end anchor connection.
2. it is according to claim 1 a kind of for improving the external prestressing device of Bailey beam falsework span, it is special
Sign is: the support component includes the foundation steel pipe pile that laterally anchoring beam (5) and one group are used to support laterally anchoring beam (5)
(4), multiple longitudinal anchorings beam (9), Bei Lei are fixed between lateral anchoring beam (5) of front end and lateral anchoring beam (5) of rear end
It is anchored at respectively at left and right sides of beam group (1) lower end on corresponding longitudinal anchoring beam (9).
3. it is according to claim 2 a kind of for improving the external prestressing device of Bailey beam falsework span, it is special
Sign is: the door frame component includes the door frame column (6) that a pair is fixed in laterally anchoring beam (5) and the support ox being in tilted layout
Leg (601), two door frame columns (6) tops are fixed with the door frame crossbeam (602) longitudinally extended, left and right at the top of each door frame column (6)
Two sides are respectively and fixedly provided with support bracket (601), and the lower end of support bracket (601) is fixed in laterally anchoring beam (5), door frame crossbeam
(602) centre offers drag-line perforation (12), is fixed with door frame crossbeam tumbler (603), institute beside drag-line perforation (12)
State the underface that jack (604) is arranged in drag-line perforation (12).
4. it is according to claim 3 a kind of for improving the external prestressing device of Bailey beam falsework span, it is special
Sign is: being respectively and fixedly provided with wind hawser (605) at the top of each door frame column (6), the other end of wind hawser (605) is anchored at bridge and holds
In the concrete foundation (8) on platform or riverbank.
5. it is according to claim 1 a kind of for improving the external prestressing device of Bailey beam falsework span, it is special
Sign is: distribution is welded with one group of " Ω " type mounting assembly (2), the lower cross along longitudinal direction among Bailey beam group (1) lower end
Beam (3) is threaded through in " Ω " type mounting assembly (2).
6. it is according to claim 5 a kind of for improving the external prestressing device of Bailey beam falsework span, it is special
Sign is: " Ω " the type mounting assembly (2) is made of multiple " Ω " type monomer members, and " Ω " type monomer members are by bar bending
It is process.
7. it is according to claim 3 a kind of for improving the external prestressing device of Bailey beam falsework span, it is special
Sign is: the lower beam (3) includes a pair of of I-steel (11), and the upper surface and lower end surface of two I-steel (11) are respectively welded
It is fixed with cover board (10), the length of lower beam (3) is longer than the width of Bailey beam group (1)；Lower beam tumbler (301) is by seamless steel
Pipe bending machining forms.
8. it is according to claim 7 a kind of for improving the external prestressing device of Bailey beam falsework span, it is special
Sign is: the door frame column (6) uses steel pipe, and the structure of door frame crossbeam (602) is identical as the structure of lower beam (3), and door frame is horizontal
Drag-line perforation (12) is reserved among the cover board (10) of beam (602), door frame crossbeam tumbler (603) is by seamless steel pipe bending machining
It forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910393460.8A CN109972531B (en) | 2019-05-13 | External prestressing device for improving temporary support span of bailey beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910393460.8A CN109972531B (en) | 2019-05-13 | External prestressing device for improving temporary support span of bailey beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109972531A true CN109972531A (en) | 2019-07-05 |
| CN109972531B CN109972531B (en) | 2024-04-23 |
Family
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593115A (en) * | 2019-09-27 | 2019-12-20 | 宁波大学 | Cast-in-place box girder support system and construction method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150086272A1 (en) * | 2012-04-26 | 2015-03-26 | Xinbin Li | Self-moving tunnel support canopy |
| CN108708267A (en) * | 2018-04-28 | 2018-10-26 | 江苏省交通工程集团有限公司 | Long span assembled Bailey beam bridge and its erection method |
| CN109537470A (en) * | 2019-01-03 | 2019-03-29 | 中铁北京工程局集团第二工程有限公司 | The Y structure construction bracket structure of battered leg stress can be adjusted in real time |
| CN208803382U (en) * | 2018-08-31 | 2019-04-30 | 中铁二十四局集团安徽工程有限公司 | A kind of CFST Arch Bridge intermediate transverse girder promotion positioning apparatus |
| CN209958229U (en) * | 2019-05-13 | 2020-01-17 | 中铁二十四局集团安徽工程有限公司 | External prestressing device for improving span of temporary support of Bailey beam |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150086272A1 (en) * | 2012-04-26 | 2015-03-26 | Xinbin Li | Self-moving tunnel support canopy |
| CN108708267A (en) * | 2018-04-28 | 2018-10-26 | 江苏省交通工程集团有限公司 | Long span assembled Bailey beam bridge and its erection method |
| CN208803382U (en) * | 2018-08-31 | 2019-04-30 | 中铁二十四局集团安徽工程有限公司 | A kind of CFST Arch Bridge intermediate transverse girder promotion positioning apparatus |
| CN109537470A (en) * | 2019-01-03 | 2019-03-29 | 中铁北京工程局集团第二工程有限公司 | The Y structure construction bracket structure of battered leg stress can be adjusted in real time |
| CN209958229U (en) * | 2019-05-13 | 2020-01-17 | 中铁二十四局集团安徽工程有限公司 | External prestressing device for improving span of temporary support of Bailey beam |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593115A (en) * | 2019-09-27 | 2019-12-20 | 宁波大学 | Cast-in-place box girder support system and construction method thereof |
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