CN109356035A - A kind of bracket, bridge pier and construction method - Google Patents
A kind of bracket, bridge pier and construction method Download PDFInfo
- Publication number
- CN109356035A CN109356035A CN201811419353.XA CN201811419353A CN109356035A CN 109356035 A CN109356035 A CN 109356035A CN 201811419353 A CN201811419353 A CN 201811419353A CN 109356035 A CN109356035 A CN 109356035A
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- built
- fitting
- crossbeam
- pier shaft
- bracket
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention provides a kind of bracket, bridge pier and construction methods, are related to the technical field of bridge construction, wherein bracket is set on pier shaft, is constructed for continuous beam 0# block, comprising: built-in fitting and mounting rail；Built-in fitting includes that at least two the first built-in fittings and at least one second built-in fitting, the first built-in fitting is disposed in proximity on the pier shaft side of pier shaft top surface, and the second built-in fitting is relatively arranged on the pier shaft side below the first built-in fitting；Mounting rail includes crossbeam and supporting beam, and one end of crossbeam is connect with the first built-in fitting, and the other end of crossbeam is vacantly arranged；One end of supporting beam is connect with the second built-in fitting, and the other end of supporting beam and the free end of crossbeam connect.The present invention reduces the difficulty of construction of continuous beam 0# block, simplifies construction details, save construction material, also largely save cost, be conducive to the raising of bracket turnover rate by using shelf bracket method construction 0# block.
Description
Technical field
The present invention relates to the technical fields of bridge construction, more particularly, to a kind of bracket, bridge pier and construction method.
Background technique
With the development of transportation, bridge construction, including river bridge, land bridge are more and more.In bridge
In beam construction, bridge pier is the basis of construction, and usual highway, Railway Bridges And Piers construction are constructed using bracket.In recent years, continuous beam suspended bracket
Construction technology is widely used, and continuous beam suspended bracket construction technology is with equipment is few, bracket is few and is not limited by span
Advantage is widely used in the construction of bridge, and in turn, the construction technology of continuous beam also reaches its maturity.In the construction process, 0#
Block construction is the beginning of entire bridge construction, and the basis of entire Construction of continuous beam, and the preparation for carrying out the construction of 0# block is outstanding
For key, therefore the construction of 0# block is emphasis, the difficult point of bridge construction.
Conventional large-span continuous beam 0# block construction uses floor steel pipe column bracket method, and floor steel pipe column bracket method is by landform item
Part is affected, and application scenarios are subject to certain restrictions, particularly with for pier steel pipe column bracket, difficulty of construction is big, cost in water
It is high.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of bracket, bridge pier and construction method, to reduce continuous beam 0# block
Difficulty of construction.
In a first aspect, being set on pier shaft the present invention provides a kind of bracket, construct for continuous beam 0# block, comprising: pre-
Embedded part and mounting rail；The built-in fitting includes at least two the first built-in fittings and at least one second built-in fitting, and described first is pre-
Embedded part is disposed in proximity on the pier shaft side of pier shaft top surface, and second built-in fitting is relatively arranged below first built-in fitting
The pier shaft side on；The mounting rail includes crossbeam and supporting beam, and one end of the crossbeam and first built-in fitting connect
It connects, the other end of the crossbeam is vacantly arranged；One end of the supporting beam is connect with second built-in fitting, the supporting beam
The other end is connect with the free end of the crossbeam.
With reference to first aspect, the present invention provides the first possible embodiments of first aspect, wherein described pre-buried
Part includes embedded bar and pre-embedded steel slab, and the embedded bar is arranged in the pier shaft, the medial surface of the pre-embedded steel slab with
The outer end of the embedded bar is welded, and the lateral surface of the pre-embedded steel slab matches with the pier shaft outer profile.
The possible embodiment of with reference to first aspect the first, second the present invention provides first aspect are possible
Embodiment, wherein the built-in fitting further includes otic placode, and the otic placode is arranged on the lateral surface of the pre-embedded steel slab；It is described
The otic placode that crossbeam and the supporting beam pass through the corresponding built-in fitting of pin shaft respectively is hinged.
The possible embodiment of with reference to first aspect the first or second of possible embodiment, the present invention provides
The third possible embodiment of first aspect, wherein the quantity at least two of the crossbeam and the supporting beam；Two
The adjacent crossbeam is linked together by chord member, and the crossbeam is linked together with the adjacent supporting beam by strut.
The possible embodiment of with reference to first aspect the first or second of possible embodiment or the third possibility
Embodiment, the present invention provides the 4th kind of possible embodiments of first aspect, wherein the crossbeam and the support
The angle that beam is formed is between 40 °~50 °.
Second aspect, the present invention provides a kind of bridge pier, including pier shaft, the reinforcer being arranged in inside the pier shaft, with
And bracket described in two groups；Bracket described in two groups is oppositely arranged on the pier shaft two sides, the reinforcer through the pier shaft,
And the both ends of the reinforcer the first built-in fitting connection corresponding with bracket described in two groups respectively；The reinforcer includes
Bellows, and the reinforcing bar being arranged in the bellows.
In conjunction with second aspect, the present invention provides the first possible embodiments of second aspect, wherein the pier shaft
Cross section be oblong, the transition position between the plane and curved surface of the pier shaft is arranged in a part of first built-in fitting
It sets, the first built-in fitting described in another part is positioned close in the plane of the crossover position.
The third aspect, the present invention also provides a kind of construction methods of bridge pier as described above, comprising the following steps: to institute
When stating pier shaft casting concrete, the reinforcer, first built-in fitting and second built-in fitting are buried, and described will add
Strong part is connected with corresponding first built-in fitting；The crossbeam and the supporting beam are installed；By the free end of the crossbeam with
The supporting beam is hinged.
The present invention provides a kind of bracket, bridge pier and construction method, compared with floor steel pipe column bracket method in the prior art, this
Invention is constructed 0# block using shelf bracket method, and simple construction details saves construction material, reduces pier continuous beam in water
Difficulty of construction；It is hinged using pin shaft between all parts, it is easy to operate, it is easy for installation, reliably；Meanwhile also largely
Cost is saved, the set-up time is shortened, and is conducive to the raising of bracket turnover rate, the construction method of bridge pier is fairly simple, easily
In operation, there is great promotion and application value.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
In order to illustrate more clearly of technical solution of the present invention, letter will be made to attached drawing needed in the embodiment below
It singly introduces, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as to range
It limits, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other relevant attached drawings.
Fig. 1 shows the structural schematic diagram of bridge pier provided by the present invention；
Fig. 2 shows the cross-sectional views of bridge pier provided by the present invention；
Fig. 3 shows A-A sectional view provided by the present invention；
Fig. 4 shows B-B sectional view provided by the present invention；
Fig. 5 shows the main view of the first built-in fitting provided by the present invention；
Fig. 6 shows the left view of the first built-in fitting provided by the present invention；
Fig. 7 shows the main view of the second built-in fitting provided by the present invention；
Fig. 8 shows the top view of the second built-in fitting provided by the present invention；
Fig. 9 shows the elevation of crossbeam provided by the present invention；
Figure 10 shows the plan view of crossbeam provided by the present invention；
Figure 11 shows the elevation of supporting beam provided by the present invention；
Figure 12 shows the plan view of supporting beam provided by the present invention.
Icon: 1- pier shaft；2- bracket；The first built-in fitting of 211-；The second built-in fitting of 212-；213- embedded bar；214- is pre-
Bury steel plate；215- otic placode；216- pin shaft；221- crossbeam；222- supporting beam；223- chord member；224- strut；3- reinforcer.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing in the present invention, to this hair
Technical solution in bright is clearly and completely described, it is clear that described embodiment is only that present invention a part is implemented
Example, instead of all the embodiments.The component of the invention being usually described and illustrated herein in the accompanying drawings can be with various differences
Configuration arrange and design.Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to below
The range of claimed invention is limited, but is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention,
Those skilled in the art's every other embodiment obtained without making creative work, belongs to the present invention
The range of protection.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, or be somebody's turn to do
Invention product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, without
It is that the device of indication or suggestion meaning or element must have a particular orientation, be constructed and operated in a specific orientation, therefore not
It can be interpreted as limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and cannot manage
Solution is indication or suggestion relative importance.
In addition, the terms such as term "horizontal", "vertical" are not offered as requiring component abswolute level or pendency, but can be slightly
Low dip.It is not to indicate that the structure has been had to if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It is complete horizontal, but can be slightly tilted.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be indirect by intermediary
It is connected, can be the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
In recent years, continuous beam suspended bracket construction technology is widely used, continuous beam suspended bracket construction technology have equipment it is few,
Bracket is few and the advantages such as is not limited by span, is widely used in the construction of bridge, in turn, the construction technology of continuous beam
It reaches its maturity.In the construction process, it is the beginning of entire bridge construction that 0# block, which is constructed, and the entirely basis of Construction of continuous beam,
The preparation for carrying out the construction of 0# block is particularly critical, therefore the construction of 0# block is emphasis, the difficult point of bridge construction.Conventional large span connects
Continuous beam 0# block construction uses floor steel pipe column bracket method, but floor steel pipe column bracket method is affected by orographic condition, application
Scene is subject to certain restrictions, particularly with for pier steel pipe column bracket, difficulty of construction is big, at high cost in water.Therefore, the present invention with
The construction of 0# block is background, provides a kind of bracket, is described below by specific embodiment.
As shown in Fig. 1~Figure 12, the present invention provides a kind of brackets 2, are set on pier shaft 1, apply for continuous beam 0# block
Work, comprising: built-in fitting and mounting rail；Built-in fitting includes at least two the first built-in fittings 211 and at least one second built-in fitting
212, the first built-in fitting 211 is disposed in proximity to 1 side of pier shaft of 1 top surface of pier shaft, and it is pre- that the second built-in fitting 212 is relatively arranged on first
1 side of pier shaft of 211 lower section of embedded part；Mounting rail includes crossbeam 221 and supporting beam 222, one end of crossbeam 221 and first pre-buried
Part 211 connects, and the other end of crossbeam 221 is vacantly arranged；One end of supporting beam 222 is connect with the second built-in fitting 212, supporting beam
222 other end is connect with the free end of crossbeam 221.
As described above, crossbeam 221 and supporting beam 222 form triangular structure, it should be noted that triangular structure
Stability is highest, to improve the overall stability of bracket.Shelf bracket method construction 0# block and traditional construction support body
The construction method of system simplifies construction details compared to having very big difference and innovation, and when use is not influenced by orographic condition, drops
The difficulty of low 0# block construction, uses pin-hinges between each component, simple and convenient, while shortening the set-up time, has
There are great promotion and application to be worth.
It should be noted that connection type mentioned in the present invention is all made of pin or pin shaft connection, each workpiece are all
Eyelet is all made of drilling, must not live punching, the finish of hole wall and pin shaft should execute in strict accordance with design requirement, each pin shaft and
Aperture allows mismachining tolerance to be ± 0.25mm, and the allowable error of stomidium back gauge is ± 0.5mm.In addition to this, the cross in the present invention
Beam 221 and supporting beam 222 are all made of 128B I-steel, and the parameters such as length, thickness and quantity are all real by continuous scene
It tests and determines.
Further, built-in fitting includes embedded bar 213 and pre-embedded steel slab 214, and embedded bar 213 is arranged in pier shaft 1,
The medial surface of pre-embedded steel slab 214 and the outer end of embedded bar 213 are welded, lateral surface and the 1 outer profile phase of pier shaft of pre-embedded steel slab 214
It coincide.
As described above, connection type of the outer end of the medial surface of pre-embedded steel slab 214 and embedded bar 213 using welding, weldering
When connecing, welding deformation is avoided as far as possible, needs first to make reasonable welding procedure before welding, and Deformation control is made to allow model in specification
Within enclosing.In addition to this, embedded bar 213 should use whole finish rolling deformed bar as far as possible, both ends be all provided with matched nut and
Anchor plate.The lateral surface of pre-embedded steel slab 214 will match with 1 outer profile of pier shaft, therefore the pre-embedded steel slab 214 at each position
The shape of lateral surface is all different, but is all matched with 1 outer profile of pier shaft, not only seems regular in this way, can also make
Pre-embedded steel slab 214 is preferably fused together with pier shaft 1, to improve overall stability and consistency.
In turn, built-in fitting further includes otic placode 215, and otic placode 215 is arranged on the lateral surface of pre-embedded steel slab 214；221 He of crossbeam
Otic placode 215 of the supporting beam 222 respectively by the corresponding built-in fitting of pin shaft 216 is hinged.
It should be noted that otic placode 215 is exactly connecting plate, in steel construction, this connection is leaned in the connection between rod piece mostly
Plate expands joint face as transition piece to complete.Connecting plate is important component, and the net section of own must do Strength co-mputation,
The also Yao Zuo rivet hole partial pressing of bolt riveting calculates, and welding will do weld seam tension, shear Strength Calculation.Pin shaft 216 is arranged in ear
On plate 215, i.e., crossbeam 221 and built-in fitting are hinged by pin shaft 216 under the fixation of otic placode 215, similarly, supporting beam
222 with built-in fitting also under the fixation of otic placode 215 by pin shaft 216 it is hinged；You need to add is that built-in fitting, otic placode
The structures such as 215 only represent a kind of identical components, are not to refer in particular to some fixed structure.
Specifically, the quantity at least two of crossbeam 221 and supporting beam 222；Two adjacent beams 221 pass through chord member 223
It links together, crossbeam 221 is linked together with adjacent supports beam 222 by strut 224.
In turn, the main function of chord member 223 and strut 224 is to keep bracket integrally stronger, passes through chord member 223 and strut
Bracket can be connected into an entirety by 224 interconnection, so that whole undertake gravity.The effect of strut 224 with plus
The effect of strengthening tendons is similar, and by strut 224, the stability of crossbeam 221 improves many.
In turn, the angle that crossbeam 221 and supporting beam 222 are formed is between 40 °~50 °.
It should be noted that the angle that crossbeam 221 and supporting beam 222 are formed is between 40 °~50 °, it can by force analysis
Know, the gravity shared in crossbeam 221 and supporting beam 222 at this time is relatively uniform.For important stressed member, detailed inspection,
To ensure structure stress safety, and crossbeam 221 and supporting beam 222 have propped up entire bracket, so their stress condition is wanted
It resits an exam worry.Therefore whole stability can be improved in the limitation of angle, and then extends the service life of bracket.Supporting beam 222 is adopted
With Two bors d's oeuveres channel steel, two 36B channel steels are stitched together, the total bearing capacity of supporting beam 222 can be improved.
Based on the same technical idea, the present invention provides a kind of bridge pier, for details, reference can be made to following embodiments.
The present invention also provides a kind of bridge piers, including pier shaft 1, the reinforcer being arranged in inside pier shaft 13 and two groups of support
Frame 2；Two groups of brackets 2 are oppositely arranged on 1 two sides of pier shaft, reinforcer 3 through pier shaft 1, and the both ends of reinforcer 3 respectively with two groups
The connection of corresponding first built-in fitting 211 of bracket 2；Reinforcer 3 includes bellows, and the reinforcing bar being arranged in bellows.
As described above, the concrete vertical pressure load acted in template passes through cross when 0# block concrete pouring construction
Beam 221 is passed on bracket 2, and the chord member 223 of bracket 2 and 224 system of strut are by pin handover progress self-balancing, on bracket 2
After vertical load passes to hinged built-in fitting by chord member 223 and strut 224, then pass in pier shaft 1.
Specifically, reinforcer 3 is disposed through inside pier shaft 1, and the first built-in fitting 211 of 1 two sides of pier shaft is connected to one
It rises, is more consolidated so that the first built-in fitting 211 is fixed.
In turn, 1 cross section of pier shaft is oblong, and the plane and curved surface of pier shaft 1 is arranged in a part of first built-in fitting 211
Between crossover position, the first built-in fitting of another part 211 is positioned close in the plane of crossover position.
It should be noted that it is most-often used structure that 1 cross section of pier shaft, which is oblong, pier shaft 1 can be divided into two parts,
Two semicylinders are combined with a cuboid, then place of the semicylinder in conjunction with cuboid is set as crossover position.First
Installation of the built-in fitting 211 on pier shaft should be installed in strict accordance with design position, and the structure stress for avoiding the later period from installing is unsatisfactory for
Design requirement.In order to reach better support effect, on crossover position and the first built-in fitting 211, Ke Yiti is arranged in side
High whole stability.
Based on the same technical idea, the present invention also provides a kind of construction methods of bridge pier, comprising the following steps: right
When 1 casting concrete of pier shaft, bury reinforcer 3, the first built-in fitting 211 and the second built-in fitting 212, and by reinforcer 3 with it is right
The first built-in fitting 211 connection answered；Crossbeam 221 and supporting beam 222 are installed；The free end of crossbeam 221 and supporting beam 222 are cut with scissors
It connects.
It is constructed with continuous beam 0# block as background, after processing is completed, bracket 2 should carry out examination spelling to each component, want after the completion of assembled
Carry out static test, the intensity and deformation values of bracket when determining bracket entirety stress condition and peak load, to eliminate
Inelastic deformation and the accurate pre- lift value of setting.Static test carries out simulation ballast according to 1.2 times that the block one-time-concreting side 0# is measured,
It carries out in three times；0-50%-100%-120%-unloading, every grade of load will be measured and be recorded after adding
Initial data provides foundation for pre- lift.
Compared with the existing technology, present invention has the advantage that
A kind of bracket, bridge pier and construction method provided by the invention are constructed 0# block using shelf bracket method, simple construction
Details saves construction material, reduces the difficulty of construction of pier continuous beam in water；It is hinged using pin shaft between all parts, behaviour
Make simply, it is easy for installation, reliably；Meanwhile cost is also largely saved, the set-up time is shortened, and be conducive to hold in the palm
The raising of frame turnover rate has great promotion and application value.
Finally, it should be noted that embodiment described above, only a specific embodiment of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, those skilled in the art should understand that: anyone skilled in the art
In the technical scope disclosed by the present invention, it can still modify to technical solution documented by previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
Corresponding technical solution essence be detached from technical solution of the present invention spirit and scope, should all cover protection scope of the present invention it
It is interior.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. a kind of bracket, is set on pier shaft, construct for continuous beam 0# block characterized by comprising built-in fitting and installation
Beam；
The built-in fitting includes that at least two the first built-in fittings and at least one second built-in fitting, first built-in fitting is set to
On the pier shaft side of pier shaft top surface, second built-in fitting is relatively arranged on the pier shaft below first built-in fitting
On side；
The mounting rail includes crossbeam and supporting beam, and one end of the crossbeam is connect with first built-in fitting, the crossbeam
The other end is vacantly arranged；One end of the supporting beam is connect with second built-in fitting, the other end of the supporting beam with it is described
The free end of crossbeam connects.
2. a kind of bracket according to claim 1, which is characterized in that the built-in fitting includes embedded bar and pre-buried steel
Plate, the embedded bar are arranged in the pier shaft, and the outer end of the medial surface of the pre-embedded steel slab and the embedded bar is welded,
The lateral surface of the pre-embedded steel slab matches with the pier shaft outer profile.
3. a kind of bracket according to claim 2, which is characterized in that the built-in fitting further includes otic placode, and the otic placode is set
It sets on the lateral surface of the pre-embedded steel slab.
4. a kind of bracket according to claim 3, which is characterized in that the crossbeam and the supporting beam pass through pin shaft respectively
The otic placode of the corresponding built-in fitting is hinged.
5. a kind of bracket according to claim 4, which is characterized in that the quantity of the crossbeam and the supporting beam is at least
Two；
Two adjacent crossbeams are linked together by chord member, and the crossbeam is connected to the adjacent supporting beam by strut
Together.
6. a kind of bracket according to claim 1, which is characterized in that the crossbeam and the angle of supporting beam formation exist
Between 40 °~50 °.
7. a kind of bridge pier, which is characterized in that including pier shaft, the reinforcer being arranged in inside the pier shaft and two groups such as right
It is required that 1~6 described in any item brackets；
Bracket described in two groups is oppositely arranged on the two sides of the pier shaft, and the reinforcer is through the pier shaft, and the reinforcement
The the first built-in fitting connection corresponding with bracket described in two groups respectively of the both ends of part.
8. a kind of bridge pier according to claim 7, which is characterized in that the reinforcer includes bellows, and setting exists
Reinforcing bar in the bellows.
9. a kind of bridge pier according to claim 8, which is characterized in that the cross section of the pier shaft is oblong, a part
The crossover position between the plane and curved surface of the pier shaft, the first built-in fitting described in another part is arranged in first built-in fitting
It is positioned close in the plane of the crossover position.
10. a kind of construction method of the bridge pier as described in any one of claim 7~9, which comprises the following steps:
When to the pier shaft casting concrete, the reinforcer, first built-in fitting and second built-in fitting are buried,
And the reinforcer is connected with corresponding first built-in fitting；
The crossbeam and the supporting beam are installed；
The free end of the crossbeam and the supporting beam is hinged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811419353.XA CN109356035A (en) | 2018-11-26 | 2018-11-26 | A kind of bracket, bridge pier and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811419353.XA CN109356035A (en) | 2018-11-26 | 2018-11-26 | A kind of bracket, bridge pier and construction method |
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| CN109356035A true CN109356035A (en) | 2019-02-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113430945A (en) * | 2021-07-01 | 2021-09-24 | 广西路桥工程集团有限公司 | Design method of assembly type bracket, bracket and construction method of bridge 0# block |
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