CN207295462U - A kind of cast-in-situ box girder hoop bracket system - Google Patents
A kind of cast-in-situ box girder hoop bracket system Download PDFInfo
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- CN207295462U CN207295462U CN201720421112.3U CN201720421112U CN207295462U CN 207295462 U CN207295462 U CN 207295462U CN 201720421112 U CN201720421112 U CN 201720421112U CN 207295462 U CN207295462 U CN 207295462U
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- anchor ear
- stake
- cast
- pile foundation
- pile
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Abstract
The utility model belongs to a kind of cast-in-situ box girder hoop bracket system.System is made of anchor ear supporting rack and root pile, and anchor ear supporting rack is by main brace beam, main beam, willfully brutal, oblique reinforcing beam, upper anchor ear, lower anchor ear and middle anchor ear are formed, and root pile strengthens stake and reinforced concrete terminal pad by several screw rods and pile foundation is formed.Auxiliary support column is used to strengthen or support the conventional bracket between two bridge piers, and several Auxiliary support columns are in spacing distance between two bridge piers.The advantages of the utility model can construct in the severe construction area of complicated landform, geology, landforms, have and save construction cost, and time saving and energy saving, construction cost is low, and construction quality is good, and security is good and using effect is good.
Description
Technical field
The invention belongs to a kind of cast-in-situ box girder hoop bracket system.
Background technology
With rapid economic development, the construction for old highway, railway being widened, being increased line transformation is increasing.Due to
When old highway, the bridge pier of railway are designed, be according to former design highway, railway load and complete, and widen, increase line
The load of transformation is generally equal to or the load more than former Pier Design.For this reason, conventional method uses full framing or falsework method more
Construct, full framing or falsework method are that intensive branch of building earns frame since under bridge, carry out what branch was earned to bridge floor operation stent
Construction method, to share the load of former Pier Design.It is well known that Support Method or falsework method are higher to ground requirement for bearing capacity, meet
It is limited to Unfavorable geology, steep slope topography, construction site or cannot be fitted when Large River is when complicated landform, geology, landforms construction
With.Typically, since the input such as longer influence duration in basement process cycle, machinery, personnel, material is more and increases cost, and take
Expenses of labour power, speed of application are slow.And the area for that need to transform often is limited in Unfavorable geology, steep slope topography, construction site or
Across the complicated landforms such as Large River, geology, landforms severe construction area.It is difficult to full framing or falsework method is constructed.
Such as：Along the river to Dejiang highway K72+850 overline bridges, center pile No. changes road K0+145.00, across footpath combination in Guizhou Province
For 20+32+20m, superstructure uses prestressed concrete cross-section Cast-in-Situ Continuous Beam, single box single chamber, and bridge lower part uses
1.6m diameter column piers, bored pile foundation, stake footpath 1.8m；The bridge location is on straight line.Full-bridge scope is in hillside band, ground
Gesture is precipitous, and earth's surface there are a large amount of stability it is poor abandon stone, spoir, and deal with relatively difficult.Full hall branch can not be used
Frame or falsework method are constructed.
The content of the invention
, can be in complicated landform, geology, the evil of landforms the purpose of the present invention is designing a kind of cast-in-situ box girder hoop bracket system
Bad construction area is constructed, and is had and is saved construction cost, time saving and energy saving, construction cost is low, and construction quality is good, and security is good and makes
With effect it is good the advantages of.
For this reason, the cast-in-situ box girder hoop bracket system of the present invention, including bridge pier and conventional bracket, wherein：
Anchor ear supporting rack, anchor ear supporting rack are in triangular form supporting rack, and anchor ear supporting rack is by main brace beam, main beam, willfully strong
Beam, oblique reinforcing beam, upper anchor ear, lower anchor ear and middle anchor ear are formed, and the upper end of two main brace beams is fixed on the lower end of main beam
Two edge, the lower end of two main brace beams are fixed as one, and main brace beam top and middle part are equipped with the willfully brutal parallel with main beam,
Two main brace beams willfully between brutal are equipped with oblique reinforcing beam, and upper anchor ear, middle anchor ear and lower anchor ear are located at the same side respectively
On face and same vertical line two willfully on the lower end of brutal and main brace beam, the upper end of main beam holds the lower end of conventional bracket, main
The lower end of support beam or lower anchor ear holds the upper end of the reducing at reinforced concrete terminal pad or staking column, on upper and lower and middle anchor ear
Equipped with connecting plate, connecting plate is equipped with fastening snail hole, and upper and lower and middle anchor ear is fastened on bridge by connecting plate and bolt respectively
The upper and lower and pars intermedia of pier side.
Root pile, for reinforcement or the intensity or load of load sharing pile foundation, root pile strengthens stake and reinforced concrete by several screw rods
Terminal pad and pile foundation are formed, and at least three screw rod strengthens stake and be located at the periphery of pile foundation in spacing distance, and stake is oblique sets for screw rod reinforcement
To put, it is 10 °~40 ° that screw rod, which strengthens the axial line of stake and the axial line angle of pile foundation, and the junction of bridge pier and pile foundation is equipped with groove,
The middle part of reinforced concrete terminal pad is connected with pile foundation concave part, and the outside diameter of reinforced concrete terminal pad is more than the diameter of pile foundation, each spiral shell
The upper end that bar strengthens stake is connected in spacing distance with the lower end of reinforced concrete terminal pad.
Auxiliary support column, for strengthening or supporting the conventional bracket between two bridge piers, several Auxiliary support columns are in spacer
Off normal between two bridge piers, Auxiliary support column is in I-shaped, and the upper end of Auxiliary support column is held in the lower end of conventional bracket, auxiliary
The lower end of support column is held on hard ground.
The anchor ear supporting rack is located at the side of bridge pier, or the correspondence both sides of a bridge pier respectively set an anchor ear support
Frame.The Pile Diameter and the ratio of reinforced concrete terminal pad outer diameter length are 1: 1.3~2.The height of the reinforced concrete terminal pad
For 40~100cm.The axis of the screw rod reinforcement stake of the composition root pile is with the section by the pile foundation center of circle in same plane
On.
Said system has reached the purpose of this utility model.
The present invention can construct in the severe construction area of complicated landform, geology, landforms, have and save construction cost, save
The advantages of Shi Shengli, construction cost is low, and construction quality is good, and security is good and using effect is good.
The present invention is using frictional force between anchor ear and pier or the supporting structure that is formed as load of staking column change path position, to be upper
Portion's conventional bracket provides and sets up platform, especially suitable so as to fast, conveniently and safely realize the work that pours of cast-in-situ box girder
For the region with a varied topography such as mountain area, dramatically speed up construction speed, reduce construction cost.
If：The load weight that bridge pier and pile foundation original load capacity are less than the cast-in-situ box girder of design and bear, then using anchor ear
Supporting rack adds root pile construct, and root pile steadily fixes trunk principle using tree root dispensing support, can using less, carefully,
Oblique screw rod strengthens the steady fixed support structure of stake dispensing support and bridge pier and the bearing capacity of pile foundation.There is provided for top conventional bracket
Platform is set up, work is poured so as to fast, conveniently and safely realize cast-in-situ box girder, especially suitable for landform such as mountain areas
Complex region, dramatically speeds up construction speed, reduces construction cost.
With ratio conventional method of the invention and structure construction time contracting square 70%, construction material 80%, construction cost are saved
Reduce by 60%；Construction quality is good, and effects of energy conservation and environmental protection is good.
Brief description of the drawings
Fig. 1 is the schematic diagram of the anchor ear supporting rack of the present invention.
The anchor ear supporting rack that Fig. 2 is the present invention implements status architecture schematic diagram.
The anchor ear supporting rack that Fig. 3 is the present invention implements state partial structural diagram.
Fig. 4 is the structure diagram of the root pile of the present invention.
Fig. 5 is the A-A cross-sectional views of Fig. 4.
Embodiment
As shown in Figures 1 to 5, cast-in-situ box girder hoop bracket system of the invention, including bridge pier 12 and conventional bracket 11 and
The cast-in-situ box girder 10 supported by conventional bracket, wherein：
Anchor ear supporting rack：Anchor ear supporting rack is in triangular form supporting rack.Anchor ear supporting rack is by main brace beam 3, main beam 2, willfully
Brutal 9, oblique reinforcing beam 8, upper anchor ear 1, lower anchor ear 7 and middle anchor ear 5 are formed.The upper end of two main brace beams is fixed on main beam
Two edge of lower end, the lower end of two main brace beams is fixed as one.Main brace beam top and middle part are equipped with parallel with main beam two
A willfully brutal.Two main brace beams willfully between brutal are equipped with oblique reinforcing beam.Upper anchor ear, middle anchor ear and lower anchor ear difference
On same side and same vertical line two willfully on the lower end of brutal and main brace beam.The upper end of main beam holds conventional bracket
Lower end.The lower end of main brace beam or lower anchor ear holds the upper end of 13 reducing at reinforced concrete terminal pad or staking column.
Upper and lower and middle anchor ear is equipped with connecting plate 4, and connecting plate is equipped with fastening snail hole 6.Upper and lower and middle anchor ear
The upper and lower and pars intermedia of bridge pier side is fastened on by connecting plate and bolt respectively.Upper and lower and middle anchor ear is in two semicircular folding
Shape anchor ear, the junction of two folding shape anchor ears set connecting plate, when each anchor ear is encircled when on the bridge pier periphery wall of corresponding position, with tight
After Gu snail passes through the fastening snail hole on two connecting plates, bolt is tightened, each anchor ear is connected with bridge pier periphery wall.
Root pile, for reinforcement or the intensity or load of load sharing pile foundation.Root pile strengthens stake 17 and reinforcing bar by several screw rods
Concrete terminal pad 16 and pile foundation 14 are formed.At least three screw rod strengthens the periphery that stake is located at pile foundation in spacing distance.Screw rod strengthens stake
Angularly disposed, it is 10 °~40 ° that screw rod, which strengthens the axial line of stake and the axial line angle of pile foundation,.The junction of bridge pier and pile foundation is set
Fluted 18, the middle part of reinforced concrete terminal pad is connected with pile foundation concave part.The outside diameter of reinforced concrete terminal pad is more than pile foundation
Diameter, the upper end that each screw rod strengthens stake are connected in spacing distance with the lower end of reinforced concrete terminal pad.
Auxiliary support column 15：For strengthening or supporting the conventional bracket between two bridge piers.Several Auxiliary support columns are in interval
Distance is positioned at two bridge piers between, and Auxiliary support column is in I-shaped, and the upper end of Auxiliary support column is held in the lower end of conventional bracket, auxiliary
The lower end of support column is helped to hold on hard ground.
The anchor ear supporting rack is located at the side of bridge pier, or the correspondence both sides of a bridge pier respectively set an anchor ear support
Frame.At this time, two main brace beams can share same upper and lower and middle anchor ear, therefore be not repeated.
The Pile Diameter and the ratio of reinforced concrete terminal pad outer diameter length are 1: 1.3~2.The reinforced concrete terminal pad
A height of 40~100cm.The axis of the screw rod reinforcement stake of the composition root pile is with the section by the pile foundation center of circle same
In plane.
A kind of method constructed with cast-in-situ box girder hoop bracket system, includes the following steps：
(1) according to bridge pier size prepare the main brace beam of anchor ear supporting rack, main beam, willfully brutal, oblique reinforcing beam, upper embrace
Hoop, lower anchor ear and middle anchor ear.
(2) calculate respectively and design the former carrying weight of the cast-in-situ box girder 10 to be onstructed and load weight born, bridge pier and pile foundation
Amount, every screw rod strengthen the load capacity of stake, if：Bridge pier and pile foundation original load capacity be greater than or equal to design it is to be onstructed cast-in-place
Box beam and the load weight born, then with anchor ear supporting frame construction.
Include the following steps：
(1) anchor ear under being installed in bridge pier side, lower anchor ear is directly installed at staking column position, at staking column
Reducing is made at the secure support of lower anchor ear, to ensure the sufficiently stable of lower anchor ear；
(2) anchor ear is installed after determining position according to calculating and positioning measurement, main beam then is installed on upper anchor ear；
(3) since lower anchor ear embrace ear to main beam slanted floor to installation main brace beam；
(4) middle anchor ear and willfully brutal and oblique reinforcing beam are installed, form anchor ear supporting rack；
(5) conventional bracket is installed successively on main beam top, is set in the conventional bracket between bridge pier in spacing distance
Auxiliary support column；
(6) conventional bracket carries out pouring for cast-in-situ box girder after precompressed qualification；
(7) after the concrete setting phase for treating cast-in-situ box girder, conventional bracket and Auxiliary support column are removed, in main beam upper end
To support frame, support frame and anchor ear supporting rack is set between the cast-in-situ box girder lower end of corresponding position permanent integral is formed with bridge pier
Box beam supporting structure.
If：If the load weight that the bridge pier and pile foundation original load capacity are less than the cast-in-situ box girder of design and bear,
Add root pile construct using anchor ear supporting rack, include the following steps：
(1) screw rod strengthens the design of stake, strengthens the design load capacity of stake according to every screw rod, calculates screw rod used and strengthens
The quantity of stake, should ensure that：Total load capacity that screw rod strengthens stake adds bridge pier and pile foundation original load capacity to be equal to or more than cast-in-place case
Beam and the load weight born；
(2) screw rod strengthens the construction of stake, and each screw rod is set in spacing distance in the neighboring equidistant of bridge pier and pile foundation
Strengthen the bore position of stake, each screw rod reinforcement stake is angularly disposed, and each screw rod strengthens the axial line of stake and the axial line angle of pile foundation
For 10 °~40 °, the junction of bridge pier and pile foundation is equipped with groove or sets groove at the reducing of staking column, strengthens stake with screw rod and bores
Hole equipment auger shell bar strengthens stake holes, and the concrete irrigated to the concrete that each screw rod is strengthened irrigating in stake drilling in drilling approaches
The middle part of concave part；
(3) it should soon insert and carry slowly using the concrete for perfusion of vibrating in vibrating spear insertion screw rod reinforcement stake holes, vibrating spear, repeatedly
Shake is smash, is goed deep into the stake holes of lower 2 meters of stake top, ensures pile crown concrete quality；
(4) after the completion of vibrating, in the pile crown upper berth plastic cloth health handled well, pile crown is protected；
(5) after treating the concrete setting phase that screw rod strengthens stake, reinforced concrete terminal pad construction, finishing reinforced concrete connection are carried out
The foundation pit of disk sets locating template in the foundation pit perisporium of reinforced concrete terminal pad, checks and each connected positioned at reinforced concrete to designed elevation
Each screw rod in disk foundation pit strengthens the absolute altitude and appearance of stake top, and each pile crown top should be located at the lower part of reinforced concrete terminal pad foundation pit
Interior, the pile crown to being higher by design requirement and surface irregularity, carries out manual amendment；
(6) after setting bar-mat reinforcement in the foundation pit of reinforced concrete terminal pad, concreting is carried out, using covering geotextiles watering
Health, finally removes locating template；
(7) lower anchor ear, is directly installed on the upper surface of reinforced concrete terminal pad, by steel by anchor ear under being installed in bridge pier side
Muscle concrete terminal pad is made at the secure support of lower anchor ear, to ensure the sufficiently stable and weight load sharing of lower anchor ear；
(8) anchor ear is installed after determining position according to calculating and positioning measurement, main beam then is installed on upper anchor ear；
(9) since lower anchor ear embrace ear to main beam slanted floor to installation main brace beam；
(10) middle anchor ear and willfully brutal and oblique reinforcing beam are installed, form anchor ear supporting rack；
(11) conventional bracket is installed successively on main beam top, is set in the conventional bracket between bridge pier in spacing distance
Auxiliary support column；
(12) conventional bracket carries out pouring for cast-in-situ box girder after precompressed qualification；
(13) after the concrete setting phase for treating cast-in-situ box girder, conventional bracket and Auxiliary support column are removed, on main beam
End forms permanent integral to support frame, support frame and anchor ear supporting rack is set between the cast-in-situ box girder lower end of corresponding position with bridge pier
Box beam supporting structure.
The stake footpath straight bar section that the screw rod strengthens stake uses 0.3m, thread segment stake core diameter 0.199m, and straight bar section is not small
In total stake it is long 1/3rd and be not less than 4m.The collar plate shape that it is 1.3~2 times of Pile Diameter that the reinforced concrete terminal pad, which is,
Body.
In short, the present invention releases the construction system that anchor ear adds root pile, can be applied in complicated landform, geology, the severe of landforms
Work area is constructed, and is had and is saved construction cost, and time saving and energy saving, construction cost is low, and construction quality is good, and security is good and uses effect
The advantages of fruit is good.
Claims (5)
1. a kind of cast-in-situ box girder hoop bracket system, including bridge pier and conventional bracket, it is characterised in that：
Anchor ear supporting rack, anchor ear supporting rack are in triangular form supporting rack, and anchor ear supporting rack is by main brace beam, willfully main beam, brutal, tiltedly
Reinforcing beam, upper anchor ear, lower anchor ear and middle anchor ear are formed, and the upper end of two main brace beams is fixed on the lower end both sides of main beam
Portion, the lower end of two main brace beams are fixed as one, and main brace beam top and middle part are equipped with the willfully brutal parallel with main beam, two
Willfully the main brace beam between brutal is equipped with oblique reinforcing beam, upper anchor ear, middle anchor ear and lower anchor ear respectively positioned at same side and
On same vertical line two willfully on the lower end of brutal and main brace beam, the upper end of main beam holds the lower end of conventional bracket, main brace beam
Or the lower end of lower anchor ear holds the upper end of the reducing at reinforced concrete terminal pad or staking column, upper and lower and middle anchor ear is equipped with
Connecting plate, connecting plate are equipped with fastening snail hole, and upper and lower and middle anchor ear is fastened on bridge pier one by connecting plate and bolt respectively
The upper and lower and pars intermedia of side；
Root pile, for reinforcement or the intensity or load of load sharing pile foundation, root pile is strengthened stake by several screw rods and is connected with reinforced concrete
Disk and pile foundation are formed, and at least three screw rod strengthens the periphery that stake is located at pile foundation in spacing distance, and screw rod reinforcement stake is angularly disposed,
It is 10 °~40 ° that screw rod, which strengthens the axial line of stake and the axial line angle of pile foundation, and the junction of bridge pier and pile foundation is equipped with groove, steel
The middle part of muscle concrete terminal pad is connected with pile foundation concave part, and the outside diameter of reinforced concrete terminal pad is more than the diameter of pile foundation, each screw rod
The upper end for strengthening stake is connected in spacing distance with the lower end of reinforced concrete terminal pad；
Auxiliary support column, for strengthening or supporting the conventional bracket between two bridge piers, several Auxiliary support columns are offed normal in spacer
Between two bridge piers, Auxiliary support column is in I-shaped, and the upper end of Auxiliary support column is held in the lower end of conventional bracket, Auxiliary support
The lower end of column is held on hard ground.
A kind of 2. cast-in-situ box girder hoop bracket system as described in claim 1, it is characterised in that：The anchor ear supporting rack position
An anchor ear supporting rack is respectively set in the correspondence both sides of the side of bridge pier, or a bridge pier.
A kind of 3. cast-in-situ box girder hoop bracket system as described in claim 1, it is characterised in that：The Pile Diameter and steel
The ratio of muscle concrete terminal pad outer diameter length is 1: 1.3~2.
A kind of 4. cast-in-situ box girder hoop bracket system as described in claim 1, it is characterised in that：The reinforced concrete terminal pad
A height of 40~60cm.
A kind of 5. cast-in-situ box girder hoop bracket system as described in claim 1, it is characterised in that：The composition root pile
Screw rod strengthen the axis of stake with by the section in the pile foundation center of circle at grade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720421112.3U CN207295462U (en) | 2017-04-21 | 2017-04-21 | A kind of cast-in-situ box girder hoop bracket system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720421112.3U CN207295462U (en) | 2017-04-21 | 2017-04-21 | A kind of cast-in-situ box girder hoop bracket system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207295462U true CN207295462U (en) | 2018-05-01 |
Family
ID=62271594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720421112.3U Withdrawn - After Issue CN207295462U (en) | 2017-04-21 | 2017-04-21 | A kind of cast-in-situ box girder hoop bracket system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207295462U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109056536A (en) * | 2018-08-09 | 2018-12-21 | 杭州江润科技有限公司 | Based on combined type hoop bracket construction of cast-in-situ box-beam method |
| CN110593114A (en) * | 2019-09-27 | 2019-12-20 | 杭州悦为科技有限公司 | Box girder construction method based on large-span box girder multi-hoop truss support bailey bracket |
-
2017
- 2017-04-21 CN CN201720421112.3U patent/CN207295462U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109056536A (en) * | 2018-08-09 | 2018-12-21 | 杭州江润科技有限公司 | Based on combined type hoop bracket construction of cast-in-situ box-beam method |
| CN109056536B (en) * | 2018-08-09 | 2020-04-28 | 杭州江润科技有限公司 | Cast-in-place box girder construction method based on combined hoop support |
| CN110593114A (en) * | 2019-09-27 | 2019-12-20 | 杭州悦为科技有限公司 | Box girder construction method based on large-span box girder multi-hoop truss support bailey bracket |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180501 Effective date of abandoning: 20180724 |