CN109778894A - A kind of railroad bridge tubular pole and cushion cap connection structure, foundation structure and construction method - Google Patents
A kind of railroad bridge tubular pole and cushion cap connection structure, foundation structure and construction method Download PDFInfo
- Publication number
- CN109778894A CN109778894A CN201910143387.9A CN201910143387A CN109778894A CN 109778894 A CN109778894 A CN 109778894A CN 201910143387 A CN201910143387 A CN 201910143387A CN 109778894 A CN109778894 A CN 109778894A
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- Prior art keywords
- flange disk
- cushion cap
- railroad bridge
- steel bushing
- connection structure
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- 238000010276 construction Methods 0.000 title claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 238000009417 prefabrication Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 claims 1
- 238000000034 method Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000006187 pill Substances 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The invention discloses the connection structures of a kind of railroad bridge large-diameter tubular pile and cushion cap, it is characterised in that: second flange disk (32), anchor bar (5) including first flange disk (31), default steel bushing (4)；The first flange disk (31) is weldingly fixed on the end plate (2) on tubular pole (1) top, and multiple steel bushings (4) are fixedly connected in the top surface circumferential direction of the second flange disk (32)；An anchor bar (5) is fixedly connected in each steel bushing (4)；Cushion cap (6) have been poured at the top of tubular pole (1), and a part at the top of entire first flange disk (31), second flange disk (32), steel bushing (4), anchor bar (5) and tubular pole (1) is connected with each other, is embedded to wherein.This connection type ensures the globality that stake is connect with cushion cap, and the horizontal force that can be preferably subject to stake top passes to entire pile body, ensure that the continuity of stress.
Description
Technical field
The invention belongs to science of bridge building fields, and in particular to a kind of connection knot of railroad bridge large-diameter tubular pile and cushion cap
Structure, railroad bridge foundation structure and construction method.
Background technique
In recent years, for large-diameter tubular pile because being suitble to the geological conditions of soft clay area, convenient and quick construction saves the originals such as material
Because being widely used on railroad bridge.Different from building foundation loading characteristic, railroad bridge basis is because of the horizontal lotus such as brake force
It carries, bears biggish horizontal force and moment of flexure in stake top and cushion cap junction, it is former " tubular pole standard design drawing collection " recommendation, normal at present
Type of attachment mainly has stake top end plate welding anchor bar, places joint bar in pipe and placing concrete fills out the heart, but both
Connection type has been unable to meet the demand of railway large-diameter tubular pile moment connection, above deposits in the application of the connection type of tubular pole and cushion cap
In following problems:
1, stake top end plate welds the weld seam among anchor bar method junction steel plate and pile end board with the Impact direction of reinforcing bar
Vertically, stress is discontinuous, and weld seam tear is easy to cause to fail, and allows stretching resistance smaller.
2, it is direct that the switching performance that joint bar and placing concrete are filled out between the wadding weft variation and tubular pole of core method is placed in pipe
The quality of cushion cap Yu tubular pole globality is determined, to influence the transmitting of stress.
3, site operation is complicated, and builder's operation level has a certain difference, the construction quality of both connection methods
It is not easy to guarantee.
Summary of the invention
For at least one of prior art the above defects or improvement requirements, the present invention provides a kind of railroad bridge is big
The connection structure of diameter tubular pole and cushion cap is fast completely new reasonable of a kind of good bending resistance stress performance, good economy performance, speed of application
Novel foundation form.
To achieve the above object, according to one aspect of the present invention, it provides a kind of railroad bridge large-diameter tubular pile and holds
The connection structure of platform, second flange disk, anchor bar including first flange disk, default steel bushing；
The first flange disk is weldingly fixed on the end plate on tubular pole top, and multiple steel bushings are fixedly connected on described
In the top surface circumferential direction of second flange disk；An anchor bar is fixedly connected in each steel bushing；
Cushion cap has been poured at the top of tubular pole, by entire first flange disk, second flange disk, steel bushing, anchor bar with
And a part at the top of tubular pole is connected with each other, is embedded to wherein.
Preferably, the first flange disk, second flange disk and the end plate are annular.
Preferably, the ring width of the first flange disk is less than the ring width of the end plate.
Preferably, the end plate has more the two sides width segments of the first flange disk and the angle Yu of the first flange disk
Place forms weld seam and is welded and fixed.
Preferably, multiple steel bushings are evenly distributed in the ring side circumferential direction of the second flange disk.
Preferably, the inside of the steel bushing is equipped with internal screw thread, and the lower end of the anchor bar is equipped with external screw thread, described
The lower end of anchor bar, which is screwed into the steel bushing, carries out screw thread matching connection.
Preferably, the lower end of the anchor bar is inserted into the steel bushing and is welded to connect.
Preferably, the second flange disk and the steel bushing are prefabrication integral structure.
To achieve the above object, second aspect according to the invention additionally provides a kind of foundation structure of railroad bridge, packet
The connection structure of tubular pole, cushion cap and foregoing railroad bridge large-diameter tubular pile and cushion cap is included, iron is set on the cushion cap
The superstructure of road and bridge beam.
To achieve the above object, the third aspect according to the invention additionally provides a kind of foregoing railroad bridge
The construction method of foundation structure, includes the following steps:
After S1, tubular pole pile sinking are in place, the first flange disk is weldingly fixed on the end plate on tubular pole top, then by
One ring flange is bolted with the second flange disk with steel bushing；
S2, anchor bar is fixed in the steel bushing being preset on the second flange disk；
S3, cushion cap concrete is poured, realizes the connection of tubular pole and cushion cap；
The superstructure of railroad bridge more than S4, construction bearing platform.
Above-mentioned preferred feature can be combined with each other as long as they do not conflict with each other.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, have below beneficial to effect
Fruit:
1, the connection structure of railroad bridge large-diameter tubular pile of the invention and cushion cap, using a kind of flange of built-in steel sleeve
Disk can solve problem above of the existing technology simultaneously, be the connection side of a kind of completely new reasonable large-diameter tubular pile and cushion cap
Formula.
2, this connection type ensures that the globality that stake is connect with cushion cap, especially upper flange plate cross section are I-shaped
Type, bonding strength can more be improved by being embedded in cushion cap concrete, and the horizontal force that can be preferably subject to stake top passes to entire pile body,
It ensure that the continuity of stress.
3, the second flange disk for presetting steel bushing is made and is processed in machining factory, and quality is guaranteed,
Avoid the unstability of operation under field condition.
4, it is bolted between ring flange of the present invention, and by the use of prefabricated component, it is convenient to construct, and has saved construction
Time.
5, present invention can apply to the moment connections of large-diameter tubular pile and cushion cap, can not only meet bridge foundation structure by
Power, economy and exploitativeness are also superior to currently used type of attachment, and once popularization, approval extensively and application can be obtained.
Detailed description of the invention
Fig. 1 is the schematic side view of the connection structure of railroad bridge large-diameter tubular pile and cushion cap of the invention；
Fig. 2 is the second flange that steel bushing is preset in the connection structure of railroad bridge large-diameter tubular pile and cushion cap of the invention
The three-dimensional effect diagram of disk.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.The present invention is described in more detail With reference to embodiment.
As shown in Figs. 1-2, the connection structure of a kind of railroad bridge large-diameter tubular pile and cushion cap of the invention, including the first method
Second flange disk 32, the anchor bar 5 of blue disk 31, default steel bushing 4.
The first flange disk 31 is weldingly fixed on the end plate 2 on 1 top of tubular pole, and multiple steel bushings 4 are fixedly connected
In the top surface circumferential direction of the second flange disk 32；An anchor bar 5 is fixedly connected in each steel bushing 4.
Cushion cap 6 is poured at the top of tubular pole 1, by entire first flange disk 31, second flange disk 32, steel bushing 4, anchoring
The a part at 1 top of reinforcing bar 5 and tubular pole is connected with each other, is embedded to wherein.
As shown in Fig. 2, the first flange disk 31, second flange disk 32 and the end plate 2 are annular, it is concentric to set
Set and adapt to the diameter of hollow shell pill.The ring width of the first flange disk 31 is less than the ring width of the end plate 2.The end plate more than 2
8 formation weld seams weld admittedly at the angle Yu of the two sides width segments of the first flange disk 31 and the first flange disk 31 out
It is fixed, it can be multi-point welding or continuous girth welding.32 cross section of second flange disk be it is I-shaped, including upper and lower two
Disk and between cylinder and floor, multiple steel bushings 4 are evenly distributed on the ring Bian Zhouxiang of the first flange disk 31
On.
For the connection type of built-in steel sleeve and anchor bar, the first is, the inside of the steel bushing 4 is equipped with interior spiral shell
The lower end of line, the anchor bar 5 is equipped with external screw thread, and the lower end of the anchor bar 5 is screwed into the steel bushing 4 and carries out spiral shell
Line matching connection；Second is that the lower end of the anchor bar 5 is inserted into the steel bushing 4 and is welded to connect.For anchor
Gu the direction of reinforcing bar, the first is, all anchor bars 5 are all vertically arranged；Second is straightened portion setting, partially court
It is obliquely installed on the outside of tubular pole 1 with decomposition level power, such as lower end bending setting, the especially anchor bar 5 of 6 length direction of cushion cap
It is obliquely installed on the outside of towards tubular pole 1, width direction is vertically arranged.
Preferably, the second flange disk 32 and the steel bushing 4 are prefabrication integrated formed structure, and quality obtains
Guarantee, avoids the unstability of operation under field condition.
The present invention also provides a kind of foundation structures of railroad bridge, including tubular pole 1, cushion cap 6 and foregoing iron
The superstructure of railroad bridge is arranged on the cushion cap 6 for the connection structure of road and bridge beam large-diameter tubular pile and cushion cap.
The construction method of the foundation structure of railroad bridge of the invention, includes the following steps:
After S1,1 pile sinking of tubular pole are in place, first flange disk 31 is weldingly fixed on the end plate 2 on 1 top of tubular pole, then will
First flange disk 31 and the second flange disk 32 with steel bushing 4 of prefabrication are attached by bolt 33；
S2, anchor bar 5 is screwed into the steel bushing 4 being preset on second flange disk 32；
S3, the concrete for pouring cushion cap 6, by entire first flange disk 31, second flange disk 32, steel bushing 4, anchor bar
5 and the top of tubular pole 1 a part be connected with each other, embedment wherein, realize the connection of tubular pole 1 and cushion cap 6；
S4,6 or more construction bearing platform railroad bridge superstructure.
Further, before the concrete for pouring cushion cap 6, the first casting concrete bed course 7 after the completion of cushion cap foundation excavates,
The concrete of cushion cap 6 is poured again, and the width range that pours of concrete cushion 7 pours width greater than cushion cap 6.
Connection type of the invention ensures the globality that stake is connect with cushion cap, and upper flange plate is embedded in cushion cap concrete more
Bonding strength can be improved, the horizontal force that can be preferably subject to stake top passes to entire pile body, ensure that the continuity of stress.Band
There are the factory prefabricating of the first flange disk of steel bushing and the assembled in situ mode with anchor bar, while quality assurance
Speed of application is accelerated, the construction time has been saved.Present invention can apply to the moment connections of large-diameter tubular pile and cushion cap, not only may be used
Meeting bridge foundation structure stress, economy and exploitativeness can obtain also superior to currently used type of attachment once popularization
To extensive approval and application.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of connection structure of railroad bridge large-diameter tubular pile and cushion cap, it is characterised in that:
Second flange disk (32), anchor bar (5) including first flange disk (31), default steel bushing (4)；
The first flange disk (31) is weldingly fixed on the end plate (2) on tubular pole (1) top, and multiple steel bushings (4) are fixed
It is connected in the top surface circumferential direction of the second flange disk (32)；An anchoring steel is fixedly connected in each steel bushing (4)
Muscle (5)；
Cushion cap (6) are poured at the top of tubular pole (1), by entire first flange disk (31), second flange disk (32), steel bushing
(4), a part at the top of anchor bar (5) and tubular pole (1) be connected with each other, embedment wherein.
2. the connection structure of railroad bridge large-diameter tubular pile and cushion cap as described in claim 1, it is characterised in that:
The first flange disk (31) and the end plate (2) are annular.
3. the connection structure of railroad bridge large-diameter tubular pile and cushion cap as claimed in claim 2, it is characterised in that:
The ring width of the first flange disk (31) is less than the ring width of the end plate (2).
4. the connection structure of railroad bridge large-diameter tubular pile and cushion cap as claimed in claim 3, it is characterised in that:
The end plate (2) has more the two sides width segments of the first flange disk (31) and the angle Yu of the first flange disk (31)
Place forms weld seam and is welded and fixed.
5. the connection structure of railroad bridge large-diameter tubular pile and cushion cap as claimed in claim 2, it is characterised in that:
Multiple steel bushings (4) are evenly distributed in the circumferential direction of the second flange disk (32).
6. the connection structure of railroad bridge large-diameter tubular pile and cushion cap as claimed in claim 5, it is characterised in that:
The inside of the steel bushing (4) is equipped with internal screw thread, and the lower end of the anchor bar (5) is equipped with external screw thread, the anchoring
The lower end of reinforcing bar (5), which is screwed into the steel bushing (4), carries out screw thread matching connection.
7. the connection structure of railroad bridge large-diameter tubular pile and cushion cap as claimed in claim 5, it is characterised in that:
The lower end of the anchor bar (5) is inserted into the steel bushing (4) and is welded to connect.
8. such as the connection structure of claim 2-7 described in any item railroad bridge large-diameter tubular piles and cushion cap, it is characterised in that:
The second flange disk (32) and the steel bushing (4) are prefabrication integral structure.
9. a kind of foundation structure of railroad bridge, it is characterised in that:
Including tubular pole (1), cushion cap (6) and such as the described in any item railroad bridge large-diameter tubular piles of claim 1-8 and cushion cap
Connection structure, the superstructure of railroad bridge is set on the cushion cap (6).
10. a kind of construction method of the foundation structure of railroad bridge as claimed in claim 9, which is characterized in that including as follows
Step:
After S1, tubular pole (1) pile sinking are in place, the first flange disk (31) is weldingly fixed on to the end plate (2) on tubular pole (1) top
On, then first flange disk (31) and the second flange disk (32) with steel bushing (4) are bolted；
S2, anchor bar (5) is fixed in the steel bushing (4) being preset on the second flange disk (32)；
S3, cushion cap (6) concrete is poured, realizes the connection of tubular pole (1) and cushion cap (6)；
The superstructure of railroad bridge more than S4, construction bearing platform (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910143387.9A CN109778894A (en) | 2019-02-26 | 2019-02-26 | A kind of railroad bridge tubular pole and cushion cap connection structure, foundation structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910143387.9A CN109778894A (en) | 2019-02-26 | 2019-02-26 | A kind of railroad bridge tubular pole and cushion cap connection structure, foundation structure and construction method |
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| Publication Number | Publication Date |
|---|---|
| CN109778894A true CN109778894A (en) | 2019-05-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910143387.9A Pending CN109778894A (en) | 2019-02-26 | 2019-02-26 | A kind of railroad bridge tubular pole and cushion cap connection structure, foundation structure and construction method |
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| Country | Link |
|---|---|
| CN (1) | CN109778894A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258608A (en) * | 2019-06-12 | 2019-09-20 | 南通大学 | A kind of new device that prestressed pile is connect with cushion cap or bottom plate |
| CN110904986A (en) * | 2019-10-28 | 2020-03-24 | 国网福建省电力有限公司 | Precast pile-bearing platform assembly type foundation tenon type flange connection structure and construction method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001123462A (en) * | 2000-09-29 | 2001-05-08 | Nippon Stad Welding Kk | Pile head joining structure for existing concrete pile and foundation slab concrete |
| CN107435338A (en) * | 2017-09-14 | 2017-12-05 | 国家电网公司 | Overhead transmission line concrete precast pipe pile cushion cap attachment means |
| CN108265744A (en) * | 2018-03-13 | 2018-07-10 | 国家电网公司 | A kind of connection structure of overhead transmission line PHC pipe pile foundations foundation pile and cushion cap |
| CN209798807U (en) * | 2019-02-26 | 2019-12-17 | 中铁第四勘察设计院集团有限公司 | Railway bridge tubular pile and bearing platform connecting structure and railway bridge foundation structure |
-
2019
- 2019-02-26 CN CN201910143387.9A patent/CN109778894A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001123462A (en) * | 2000-09-29 | 2001-05-08 | Nippon Stad Welding Kk | Pile head joining structure for existing concrete pile and foundation slab concrete |
| CN107435338A (en) * | 2017-09-14 | 2017-12-05 | 国家电网公司 | Overhead transmission line concrete precast pipe pile cushion cap attachment means |
| CN108265744A (en) * | 2018-03-13 | 2018-07-10 | 国家电网公司 | A kind of connection structure of overhead transmission line PHC pipe pile foundations foundation pile and cushion cap |
| CN209798807U (en) * | 2019-02-26 | 2019-12-17 | 中铁第四勘察设计院集团有限公司 | Railway bridge tubular pile and bearing platform connecting structure and railway bridge foundation structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258608A (en) * | 2019-06-12 | 2019-09-20 | 南通大学 | A kind of new device that prestressed pile is connect with cushion cap or bottom plate |
| CN110904986A (en) * | 2019-10-28 | 2020-03-24 | 国网福建省电力有限公司 | Precast pile-bearing platform assembly type foundation tenon type flange connection structure and construction method |
| CN110904986B (en) * | 2019-10-28 | 2021-06-22 | 国网福建省电力有限公司 | Precast pile-bearing platform assembly type foundation tenon type flange connection structure and construction method |
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