CN108442239A - A kind of full assembled light abutment and its construction method - Google Patents
A kind of full assembled light abutment and its construction method Download PDFInfo
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- CN108442239A CN108442239A CN201810525324.5A CN201810525324A CN108442239A CN 108442239 A CN108442239 A CN 108442239A CN 201810525324 A CN201810525324 A CN 201810525324A CN 108442239 A CN108442239 A CN 108442239A
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- parados
- cap
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- cushion cap
- platform
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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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
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- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A kind of full assembled light abutment, including pile foundation, cushion cap, platform cap, double blocks, parados bracket and ear wall, double blocks connect with parados bracket and above cushion caps, cushion cap, platform cap, double blocks, parados bracket and ear wall are the interior UHPC prefabricated components for setting steel reinforcement cage, pile foundation is the interior NC prefabricated components or UHPC prefabricated components for setting steel reinforcement cage, cushion cap blocks cover board H profile steel plate by band and is connect with pile foundation, platform cap, ear wall, parados bracket blocks cover board H profile steel plate by band respectively and is connect with cushion cap, between double blocks and platform cap, it is connected by deformed bar tensioning between parados bracket and ear wall；Further comprise the construction method of above structure.The present invention uses full fabricated construction, has many advantages, such as the problems such as speed of application block, simple for process, construction quality is easy to control, construction site occupies the big quality problems that the heat of hydration is brought when can effectively solve slow construction speed existing for traditional abutment, mass concrete construction less, construction area area and environmental pollution.
Description
Technical field
The present invention relates to a kind of bridge member and its construction methods, and in particular to a kind of full assembled light abutment and its applies
Work method.
Background technology
At present, the bridge substructure in China mainly uses cast in situs construction method.Cast in situs long construction period, people
Work dosage is big, and cast in situs is influenced by weather, and construction quality is not easy to ensure, and construction area area is big, cast in situs because
Concrete long distance transportation, the factors such as professionalism of construction personnel are likely to result in concrete and largely waste, and cause directly
A large amount of economic loss generates serious pollution in work progress to surrounding.In order to overcome these unfavorable factors, finds one kind and apply
Work speed block, the high bridge substructure construction method of industrialization degree become urgent problem in bridge construction.
The assembled architecture ratio of the developed countries such as America and Europe, Japan has reached 50%-70%, and cost is effectively reduced,
And this ratio of China causes the construction cost of domestic housing industrialization to be still slightly above traditional construction mode less than 10%.This is also
It is building construction, the ratio shared by the assembled of bridge is very low, and especially the lower part of bridge is even more to count on one's fingers using Standard formula
It is denumerable.The national policy target in China is：By 2018, the ratio that realization assembled architecture accounts for new building area reached 20%
More than, the year two thousand twenty is arrived, the ratio that realization assembled architecture accounts for new building area reaches 30% or more.In order to keep up with the political affairs of country
Plan, bridge lower part fabricated construction mode consequentiality.
Since the particularity of abutment stress and effect makes bridge pier be wanted using the range of fabricated construction in the construction of bridge
Much larger than abutment, cause Bridge Pier Construction it is complete after to wait and can just set a roof beam in place after abutments completion, this is serious to have dragged slowly construction speed.
Traditional abutment either has the following several forms of assembled abutment construction technology, 1. cast in situs；2. an entire abutment point left side
Right two pieces prefabricated in factory's progress, then carries out prefabricated section and be transported to on-site hoisting；3. part-structure prefabrication, part-structure are cast-in-place
(such as cushion cap is field cast-in-place, parados, aileron prefabrication etc. with platform cap).Wherein all unavoidable casting of concrete in mass,
Large volume coagulation is highly susceptible to the heat of hydration in casting process and brings the excessive quality for causing component to crack of component internal-external temperature difference
Problem.And traditional abutment mostly use it is cast-in-place construct, cast-in-place construction technique generate noise, dust, sewage；Scrap coagulation
Native at will processing, construction material stacking cause serious influence to environment in a jumble；Weather reason causes human and material resources resource consumption
Greatly, low construction efficiency, construction quality are difficult to ensure.
Invention content
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, provide a kind of full assembled light abutment and
The characteristics of its construction method, it utilizes UHPC superelevation compression strength and superhigh tenacity, in the premise for ensureing component strength and stablizing
Under greatly reduce scantling, reduce the requirement to mechanical transport and Lifting Capacity in assembling construction；By the big component piecemeal of abutment
The prefabricated quality problems that can be brought to avoid heat of hydration when mass concrete construction, but it is cast-in-place effectively to solve traditional abutment
The problem that progress is slow in construction method, construction area area is big and environmental pollution is serious, and structure stress is clear, quality is easy
Control, construction technology are simple.
In order to solve the above technical problems, technical solution proposed by the present invention is：A kind of full assembled light abutment, including stake
Base, the platform cap above cushion cap, is mounted on platform cap left and right ends portion and on cushion cap at the cushion cap above pile foundation
Double blocks of side, positioned at the side of platform cap and the parados bracket above the cushion cap and ear wall, the parados bracket are parados
With bracket one-piece casting it is prefabricated made of structure, double blocks connect with parados bracket, and double blocks are two and symmetrically set
The breast boards Antivibration block set, described cap, double blocks, parados bracket and ear wall are the interior prefabricated structures of UHPC for setting steel reinforcement cage
Part, the pile foundation and cushion cap are the interior NC prefabricated components or UHPC prefabricated components for setting steel reinforcement cage, and the cushion cap passes through band and blocks
Cover board H profile steel plate is connect with pile foundation, and described cap, ear wall, parados bracket block cover board H profile steel plate by band respectively and cushion cap connects
It connects, is connected by deformed bar tensioning between double blocks and platform cap, between parados bracket and ear wall, deformed bar
Using steel strand wires.
As a further improvement of the above technical scheme：The side of being equipped with below the cushion cap, platform cap, parados bracket and ear wall
Slot, band sealing end cover board H profile steel plate is located at when cushion cap is connect with cushion cap, ear wall with cushion cap with pile foundation, platform cap with cushion cap, parados bracket
In square groove, UHPC is perfused in square groove.
Further, the cushion cap is transversely composed by being no less than two pieces of points of cushion caps, described that interior be equipped with of cushion cap is divided to open
Draw prestressed pore passage, it is described divide between cushion cap connected by deformed bar tensioning；The precast block of cushion cap alleviates transport and hangs
The difficulty of dress, the connectivity problem after precast block can be solved very well with steel strand wires connection between piecemeal, and improve globality.
Further, described cap and double blocks are all made of several prefabricated sections and are composed, and are conducive to mitigate transporting and hoisting
Difficulty, be attached by deformed bar between each prefabricated section, the connectivity problem after precast block can be solved very well, again
Improve globality.
Further, the parados bracket is transversely composed by being no less than three pieces of points of parados brackets, the parados ox
Be equipped with stretch-draw prestressing force duct in leg, it is described divide between parados bracket connected by deformed bar tensioning, point of parados bracket
The prefabricated difficulty for alleviating transporting and hoisting of block, the connection after can solving precast block very well with steel strand wires connection between piecemeal are asked
Topic, and improve globality.
Further, described to divide between parados bracket in the longitudinal direction by the connection of " 7 " word mouth.
Further, there is epoxy resin with the UHPC rear surface even applications for carrying out being in the milk closely knit at all segmental joints
Layer, increases the leakproofness of junction.
A kind of construction method of full assembled light abutment, includes the following steps：
a：Transport and lifting：When the pile foundation, cushion cap, platform cap, double blocks, parados bracket and the ear wall that reach normal intensity value are pre-
Product is lifted after transporting to Active workings；
b：Scene splicing：The pile foundation of abutment, cushion cap, platform cap, parados bracket are subjected to splicing completion from bottom to up, then will
The left and right ends portion of double blocks and platform cap is spliced, then ear wall and the left and right ends portion of parados bracket are spliced.
Further, the specific splicing in step b is：
a1：In-site measurement releases the position of pile foundation, with artificial broken pile base top after piling machine pile sinking to projected depth into
The band sealing end cover board H profile steel plate and pile cover of the pre-buried cover plate of row are cast-in-place；
b1：It lifts cushion cap and is installed by stake position, it is pre- to stretch into cushion cap bottom for reserved band sealing end cover board H profile steel plate at the top of broken pile base
It stays in square groove, cushion cap wears deformed bar and carries out prestressed stretch-draw later in place, carries out grouting and prestress hole to square groove later
Road carries out mud jacking；
c1：Lift platform cap and double blocks, parados bracket, ear wall its underpart reserved square groove and cushion cap pre-buried difference
The band sealing end cover board H profile steel plate of model corresponds, and deformed bar is worn after each section is in place and carries out prestressed stretch-draw, later in advance
Stress duct carries out mud jacking and each seam is in the milk.
Further, the specific practice of banding steel cage is in the manufacturing process of each prefabricated component in step a：To Ribbed Bar
By being bound together with horizontal stripes rib and stirrup, bar splicing carries out mechanical connection using screw shell and forms firm steel
Muscle cage, the prestressed pore passage of pre-buried cushion cap, platform cap, parados bracket, ear wall when reinforcing bar is bound, pile foundation, the reserved band envelope in cushion cap top
End casing H profile steel plate is located in the corresponding position of steel reinforcement cage and fixes, and in each piece of bottom attachment locations stiffener net
Piece, cushion cap, platform cap, parados bracket, ear wall steel reinforcement cage bottom mended in the surrounding setting reinforced mesh of reserved connection square groove
It is hung in designed prefabricated punching block using crane after strong.
Further, 1000 tons of iant flat truck transport is no less than in step b using loading capacity, and uses and is no less than
300 tons of pedrail cranes are lifted.
Compared with the prior art, the advantages of the present invention are as follows：
1, each component in full assembled light abutment of the invention (pile foundation, cushion cap, platform cap, double blocks, parados bracket and
Ear wall) prefabricated components can be used, can be a large amount of prefabricated in factory's progress, then spliced at the scene, can effectively be solved
The problem that progress is slow in traditional abutment cast-in-situ construction method, construction area area is big and environmental pollution is serious；
2, platform cap, double blocks, parados bracket and the ear wall in full assembled light abutment of the invention have been all made of interior set
The UHPC materials of steel reinforcement cage, using the superhigh intensity, high tenacity and superpower tension of UHPC (ultra-high performance concrete material)
The characteristics of performance, on the one hand, can overcoming normal concrete abutment, bearing capacity is insufficient in science of bridge building application, is easy cracking
The problems such as；The dead weight that abutment can be reduced under same stress condition is the prefabricated of abutment, and transport, assembly creates advantageous
Condition；The interior UHPC or NC materials for setting steel reinforcement cage can be used in pile foundation and cushion cap, when using NC materials, there is reduction to be built into
Originally economic advantage, is saved, when using UHPC materials, has the characteristics that further enhance abutment intensity；
3, full assembled light abutment overall structure of the invention has used UHPC (ultra-high performance concrete material), due to
UHPC has the characteristics that high-densit, high intensity, high tenacity and superpower tensile property, excellent wearability, anticorrosive, durable
The indexs such as property, the capability of antidetonance have a distinct increment compared with normal concrete, can be well adapted for various adverse circumstances, greatly expand
Application range of the pin-connected panel abutment in science of bridge building；
4, full assembled light abutment of the invention is cushion cap, and parados bracket carries out precast block, by platform cap and its both ends
Double block precast blocks in portion provide highly advantageous condition to the making of steel reinforcement cage, avoid many problems of bar splicing；Point
The prefabricated size of section is small, simplifies the making of template, solves the substantially lifting of template, transportation problem well, can be effective
Shorten the service life of template；
5, full assembled light abutment of the invention is configured with ordinary steel on the basis of ultra-high performance concrete (UHPC)
Muscle cage makes the cushion cap, parados bracket and platform cap of precast block connect with double blocks integral using deformed bar, can be further
Enhance the tensile property of UHPC materials and the shear resistant capacity of abutment, each piecemeal is attached very using deformed bar
Good plays flexible connection, has great advantage in terms of antidetonation than the rigid abutment that traditional monoblock type pours；
6, the pile foundation of full assembled light abutment of the invention blocks cover board H profile steel plate by band with cushion cap and connect, platform cap,
Ear wall, parados bracket respectively by band block cover board H profile steel plate connect with cushion cap, between double blocks and platform cap, parados bracket and
It is connected by deformed bar tensioning between ear wall, each piecemeal connection of effective solution is integral and anti-shearing force difference
Problem；And it is a kind of area of section distribution more optimization, the more rational economic section of the ratio of strength to weight with sealing end cover board H profile steel plate
High efficiency section bar, band sealing end cover board H profile steel plate all have strong bending resistance, construction is simple, cost-effective and knot in all directions
Structure is light-weight；Scientific and reasonable for structure, plasticity and flexibility are good, structural stability is high, big suitable for bearing vibration and shock loading
Building structure, anti-natural calamity ability is strong, relatively traditional grout sleeve etc. others connection types, band sealing end cover board H-type
The stress performance of steel plate is good, assembling process is simple, controllable, especially suitable for the connection type between prefabricated components；
7, each large volume component (such as cushion cap, parados bracket) is carried out piecemeal by full assembled light abutment of the invention
It is prefabricated, it can be very good to solve to generate a large amount of heat of hydration to a series of matter of component generation during casting of concrete in mass
Amount problem；
8, the construction method of full assembled light abutment of the invention uses full assembled, has speed of application block, technique
Simply, the advantages that construction quality is easy to control, construction site occupies less；
9, the construction method of full assembled light abutment of the invention in assembling construction to mechanical transport and Lifting Capacity
It is of less demanding, save manpower, be conducive to realize mechanization.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the present invention；
The side view of Fig. 2 present invention；
Fig. 3 is the front view of the present invention；
Fig. 4 is that the pile foundation of the present invention connect detail drawing with cushion cap；
Fig. 5 is the piling strtucture schematic diagram of the present invention；
Fig. 6 is the detail drawing that the cushion cap of the present invention is connect with parados bracket, ear wall, platform cap, double blocks；
Fig. 7 is the detail drawing of each piecemeal connection of parados bracket of the present invention；
Fig. 8 is the detail drawing that the parados bracket of the present invention is connect with ear wall
Fig. 9 is the detail drawing that the platform cap of the present invention is connect with double blocks.
Marginal data：
1, pile foundation；2, cushion cap；21, divide cushion cap；3, platform cap；4, double blocks；5, parados bracket；51, divide parados bracket；52、
" 7 " word mouth；6, ear wall；7, band sealing end cover board H profile steel plate；8, deformed bar；81, prestressed pore passage；9, square groove.
Specific implementation mode
To facilitate the understanding of the present invention, the present invention is made below in conjunction with Figure of description and preferred embodiment more complete
Face meticulously describes, but the protection scope of the present invention is not limited to the following specific embodiments.
As shown in Figures 1 to 9, a kind of full assembled light abutment, including pile foundation 1, the cushion cap 2 above pile foundation 1,
Platform cap 3 above cushion cap 2, is located at platform cap at double blocks 4 mounted on 3 left and right ends portion of platform cap and above cushion cap 2
3 side and parados bracket 5 mounted on the top of cushion cap 2 and ear wall 6, double blocks 4 are connect with parados bracket 5, cushion cap 2, platform cap
3, double blocks 4, parados bracket 5 and ear wall 6 are the interior UHPC prefabricated components for setting steel reinforcement cage, and pile foundation 1 is the interior NC for setting steel reinforcement cage
(normal concrete) prefabricated components, the binding of regular reinforcement cage, the prefabricated of NC (normal concrete) stake and maintenance and first section pipe
Stake the lowermost pile top welding is all completed in pre-fabricated factory, then piecewise pile sinking at the construction field (site), and is filled using sleeve pile extension
It sets and is attached, finally abolish stake top and reserve the cover plate band sealing end cover board H profile steel plate cast-in-place pile crown of stake top again；Cushion cap 2 passes through band
Sealing end cover board H profile steel plate 7 connect with pile foundation 1, platform cap 3, ear wall 6, parados bracket 5 respectively by band sealing end cover board H profile steel plate 7 and
Cushion cap 2 connects, and is connected by 8 tensioning of deformed bar between double blocks 4 and platform cap 3, between parados bracket 5 and ear wall 6.
In the present embodiment, the pre-buried band sealing end cover board H profile steel plate 7 in the top of pile foundation 1 in 1 steel reinforcement cage of pile foundation overlapped part and
Overlapped that part will increase reinforced mesh in 2 steel reinforcement cage of cushion cap for reserved band sealing end cover board H profile steel plate 7, is blocked and is covered with reinforcing strip
Plate H profile steel plate 7 and the connection of pile foundation become an entirety.
Steel reinforcement cage used in the present embodiment is all common Ribbed Bar, and the bar splicing inside each prefabricated piecemeal is adopted
It is mechanically connected with branch sleeve, common Ribbed Bar is HRB400, and bar diameter is 28mm or 25mm.
In the present embodiment, cushion cap 2, platform cap 3, parados bracket 5 and the lower section of ear wall 6 are equipped with square groove 9, cushion cap 2 and pile foundation 1,
Band sealing end cover board H profile steel plate 7 is located at square groove 9 when platform cap 3 is connect with cushion cap 2, ear wall 6 with cushion cap 2 with cushion cap 2, parados bracket 5
In, UHPC is perfused with by reserved injected hole in square groove 9.
In the present embodiment, cushion cap 2 is the solid ultra-high performance concrete of 12.25m × 2.5m × 1.8m, transversely by two pieces
Cushion cap 21 is divided to be composed, every piece is divided cushion cap to be 6.12m × 2.5m × 1.8m, is divided and is equipped with stretch-draw prestressing force duct in cushion cap 21
81, divide between cushion cap 21 through 8 tensioning of deformed bar connection；Reserve the square groove of 4 65cm × 80cm × 80cm in 2 bottom of cushion cap
9, in stiffener net do not cut, convenient for being attached with pile foundation 1, ensure that the reliability of junction is higher.
In the present embodiment, platform cap 3 and double blocks 4 are all made of several prefabricated sections and are composed, and pass through between each prefabricated section
Deformed bar 8 is attached, and prefabricated U HPC platforms cap 3 is 10.4m × 1.6m × 1.2m, prefabricated U HPC breast boards grade Antivibration blocks
Then 4 a length of 90cm are connected by carrying out prestressed stretch-draw in stretch-draw prestressing force duct 81, later to stretch-draw prestressing force hole
Road 81 carries out Dispose by grouting (perfusion slurry uses UHPC).
In the present embodiment, parados bracket 5 is transversely composed of three pieces of points of parados brackets 51, every piece for 3.83m ×
0.6m × 2.8m (size for not including bracket), parados bracket 5 is interior to be equipped with stretch-draw prestressing force duct 81, divides between parados bracket 51
It is connected by 8 tensioning of deformed bar, divides between parados bracket 51 and connected in the longitudinal direction by " 7 " word mouth 52, it is right later
52 junction of " 7 " word mouth pours into UHPC and the progress mud jacking of stretch-draw prestressing force duct 81 is closely knit (perfusion slurry uses UHPC).
In the present embodiment, there is epoxy resin with the UHPC rear surface even applications for carrying out being in the milk closely knit at all segmental joints
Layer.
A kind of construction method of full assembled light abutment, includes the following steps：
a：Transport and lifting：When reaching the pile foundation 1 of normal intensity value, cushion cap 2, platform cap 3, double blocks 4,5 and of parados bracket
6 prefabricated component of ear wall is lifted after transporting to Active workings；
b：Scene splicing：The pile foundation 1 of abutment, cushion cap 2, platform cap 3, parados bracket 5 are subjected to splicing completion from bottom to up, so
Double blocks 4 and the left and right ends portion of platform cap 3 are spliced afterwards, then ear wall 6 and the left and right ends portion of parados bracket 5 are spelled
It connects.
In the present embodiment, the prefabrication process of each prefabricated component in above-mentioned steps a is：
(1)：Punching block makes and determines UHPC material mix proportions：According to the design ginseng of abutment in bridge structure design drawing
Number makes pile foundation 1, cushion cap 2, platform cap 3, double blocks 4, parados bracket 5 and ear wall 6 and pours into a mould punching block, the prefabricated punching block of pile foundation, together respectively
When design concrete material match ratio；
(2)：Banding steel cage：Distinguish banding steel cage in cast punching block, the prefabricated punching block of pile foundation；
(3)：Carry out concreting：It is made according to the match ratio for preparing concrete material in step a satisfactory
UHPC materials and NC materials or only UHPC materials are filled into the ready steel form in front, fully vibrate to ensure coagulation
The density of soil；
(4)：The component of pouring molding is conserved：After the completion of pouring between maintenance in carry out constant temperature and humidity steam support
Shield reaches design strength and is demoulded later, and each component of abutment distinguishes prefabricated completion at this time.
In the present embodiment, the specific splicing in step b is：
a1：In-site measurement releases the position of pile foundation 1, with artificial 1 top of broken pile base after piling machine pile sinking to projected depth
Band sealing end cover board H profile steel plate 7 and the pile cover for carrying out pre-buried cover plate are cast-in-place；
b1：It lifts cushion cap 2 and is installed by stake position, the reserved band sealing end cover board H profile steel plate 7 in 1 top of broken pile base stretches into cushion cap 2
Bottom is reserved in square groove 9, and wearing deformed bar 8 after cushion cap 2 is in place carries out prestressed stretch-draw, later to square groove 9 carry out grouting and
Prestressed pore passage 81 carries out mud jacking；
c1：Lift platform cap 3 and double blocks 4, parados bracket 5,6 its underpart of ear wall reserved square groove 9 and cushion cap 2 it is pre-buried
The band sealing end cover board H profile steel plate 7 of different model correspond, deformed bar 8 is worn after each section is in place and carries out prestressing force
It draws, prestressed pore passage 81 carries out mud jacking later and each seam is in the milk.
In the present embodiment, the specific practice of banding steel cage is in step b：To Ribbed Bar by with horizontal stripes rib and
Stirrup is bound together, and bar splicing carries out mechanical connection using screw shell and forms firm steel reinforcement cage, when reinforcing bar is bound
The prestressed pore passage 81 of pre-buried cushion cap 2, platform cap 3, parados bracket 5, ear wall 6, pile foundation 1, the reserved band sealing end cover board H-type in the top of cushion cap 2
Steel plate 7 is located in the corresponding position of steel reinforcement cage and fixes, and in each piece of bottom attachment locations stiffener mesh sheet, cushion cap 2,
Platform cap 3, parados bracket 5,6 steel reinforcement cage of ear wall bottom the surrounding setting reinforced mesh of reserved connection square groove 9 carry out reinforcement it
It is hung in designed prefabricated punching block using crane afterwards.
The iant flat truck transport that loading capacity is no less than 1000 tons is used in the present embodiment, in step e, and is used and be no less than
300 tons of pedrail cranes are lifted.
Claims (10)
1. a kind of full assembled light abutment, including pile foundation (1), be mounted on above pile foundation (1) cushion cap (2), be mounted on cushion cap
(2) the platform cap (3) above, is located at platform cap at double blocks (4) mounted on platform cap (3) left and right ends portion and above cushion cap (2)
(3) side and parados bracket (5) He Erqiang (6) above cushion cap (2), double blocks (4) and parados bracket (5)
Connection, it is characterised in that：Described cap (3), double blocks (4), parados bracket (5) He Erqiang (6) set steel reinforcement cage in being
UHPC prefabricated components, the pile foundation (1) and cushion cap (2) are the interior NC prefabricated components or UHPC prefabricated components for setting steel reinforcement cage, institute
It states cushion cap (2) to connect with pile foundation (1) by band sealing end cover board H profile steel plate (7), described cap (3), ear wall (6), parados bracket
(5) it blocks cover board H profile steel plate (7) by band respectively to connect with cushion cap (2), between double blocks (4) and platform cap (3), parados
It is connect by deformed bar (8) tensioning between bracket (5) and ear wall (6).
2. full assembled light abutment according to claim 1, it is characterised in that：The cushion cap (2), platform cap (3), parados
Square groove (9), cushion cap (2) and pile foundation (1), platform cap (3) and cushion cap (2), parados bracket are equipped with below bracket (5) He Erqiang (6)
(5) band sealing end cover board H profile steel plate (7) is located in square groove (9) when being connect with cushion cap (2) with cushion cap (2), ear wall (6), square groove (9)
Inside it is perfused with UHPC.
3. full assembled light abutment according to claim 1, it is characterised in that：The cushion cap (2) is transversely by many
It is composed in two pieces of points of cushion caps (21), it is described to divide equipped with stretch-draw prestressing force duct (81) in cushion cap (21), it is described to divide cushion cap
(21) it is connected by deformed bar (8) tensioning between.
4. full assembled light abutment according to claim 1, it is characterised in that：Described cap (3) and double blocks (4) are equal
It is composed using several prefabricated sections, is attached by deformed bar (8) between each prefabricated section.
5. full assembled light abutment according to claim 1, it is characterised in that：The parados bracket (5) transversely by
No less than three pieces of points of parados brackets (51) are composed, and stretch-draw prestressing force duct (81) are equipped in the parados bracket (5), described
Pass through deformed bar (8) tensioning between point parados bracket (51) to connect.
6. full assembled light abutment according to claim 5, it is characterised in that：Between described point of parados bracket (51)
It is connected by " 7 " word mouth (52) on length direction.
7. the full assembled light abutment according to any one of claim 1-6, it is characterised in that：At all segmental joints
There is epoxy resin layer with the UHPC rear surface even applications for carrying out being in the milk closely knit.
8. a kind of construction method of full assembled light abutment according to any one of claim 1-7, including walk as follows
Suddenly：
a：Transport and lifting：When reaching the pile foundation (1) of normal intensity value, cushion cap (2), platform cap (3), double blocks (4), parados bracket
(5) He Erqiang (6) prefabricated component is lifted after transporting to Active workings；
b：Scene splicing：The pile foundation (1) of abutment, cushion cap (2), platform cap (3), parados bracket (5) are carried out having spliced from bottom to up
At then double blocks (4) and the left and right ends portion of platform cap (3) being spliced, then by a left side for ear wall (6) and parados bracket (5)
Spliced at right both ends.
9. the construction method of full assembled light abutment according to claim 8, it is characterised in that：It is specific in step b
Splicing is：
a1：In-site measurement releases the position of pile foundation (1), with artificial broken pile base (1) top after piling machine pile sinking to projected depth
Band sealing end cover board H profile steel plate (7) and the pile cover for carrying out pre-buried cover plate are cast-in-place；
b1：It lifts cushion cap (2) and is installed by stake position, reserved band sealing end cover board H profile steel plate (7), which stretches into, at the top of broken pile base (1) holds
Platform (2) bottom is reserved in square groove (9), and wearing deformed bar (8) after cushion cap (2) is in place carries out prestressed stretch-draw, later to square groove
(9) it carries out grouting and prestressed pore passage (81) carries out mud jacking；
c1：Lift platform cap (3) and double blocks (4), parados bracket (5), ear wall (6) its underpart reserved square groove (9) and cushion cap
(2) the band sealing end cover board H profile steel plate (7) of pre-buried different model corresponds, and deformed bar (8) is worn after each section is in place
Prestressed stretch-draw is carried out, prestressed pore passage (81) carries out mud jacking later and each seam is in the milk.
10. the construction method of full assembled light abutment according to claim 8, it is characterised in that：It is each prefabricated in step a
The specific practice of banding steel cage is in the manufacturing process of part：Ribbed Bar with horizontal stripes rib and stirrup by binding one
Rise, bar splicing using screw shell carry out be mechanically connected forms firm steel reinforcement cage, when reinforcing bar is bound pre-buried cushion cap (2),
The prestressed pore passage (81) of platform cap (3), parados bracket (5), ear wall (6), pile foundation (1), the reserved band sealing end cover board H in cushion cap (2) top
Shape steel plate (7) is located in the corresponding position of steel reinforcement cage and fixes, and in each piece of bottom attachment locations stiffener mesh sheet, holds
Platform (2), platform cap (3), parados bracket (5), ear wall (6) steel reinforcement cage bottom in the surrounding of reserved connection square groove (9), reinforcing bar is set
Mesh sheet hung in designed prefabricated punching block using crane after reinforcement.
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| CN111576197A (en) * | 2020-05-08 | 2020-08-25 | 中冶南方城市建设工程技术有限公司 | Assembled bridge abutment capable of relieving bumping at bridge head and construction method thereof |
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| CN111827097B (en) * | 2020-07-06 | 2022-04-05 | 上海崇明水利工程有限公司 | Concatenation formula reinforced concrete bridge abutment structure |
| CN114182640A (en) * | 2021-12-29 | 2022-03-15 | 安徽省公路桥梁工程有限公司 | Prefabricated installation device for abutment construction and use method thereof |
| CN116290059A (en) * | 2023-01-04 | 2023-06-23 | 江苏海洋大学 | Prefabricated ultra-high performance concrete spiral pile cap and construction process |
| CN116290059B (en) * | 2023-01-04 | 2023-09-08 | 江苏海洋大学 | Prefabricated ultra-high performance concrete spiral pile cap and construction process |
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