CN208328665U - A kind of full assembled light abutment - Google Patents

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 are mounted on above cushion cap, 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 passes through band sealing end cover board H profile steel plate and connect with pile foundation, platform cap, ear wall, parados bracket passes through band sealing end cover board H profile steel plate respectively and connect with cushion cap, between double blocks and platform cap, it is connected by deformed bar tensioning between parados bracket and ear wall.The utility model uses full fabricated construction, has many advantages, such as the problems such as speed of application block, simple process, construction quality are easy to control, construction site occupies less, can effectively solve big heat of hydration bring quality problems, construction area area when slow construction speed existing for traditional abutment, mass concrete construction and environmental pollution.

Description

A kind of full assembled light abutment

Technical field

The utility model relates to a kind of bridge members, and in particular to a kind of full assembled light abutment.

Background technique

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 guarantee, 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 direct A large amount of economic loss generates serious pollution to surrounding in work progress.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, 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 wants bridge pier 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. The either existing following several forms of assembled abutment construction technology of traditional abutment, 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, construction efficiency is low, construction quality is difficult to ensure.

Utility model content

The technical problems to be solved in the utility model is to overcome the deficiencies of the prior art and provide a kind of full assembled light bridge The characteristics of platform, it utilizes UHPC superelevation compression strength and superhigh tenacity, subtracts significantly under the premise of guaranteeing component strength and stablizing Primary structural component size reduces the requirement in assembling construction to mechanical transport and Lifting Capacity；It can be with by the big component precast block of abutment Heat of hydration bring quality problems when avoiding mass concrete construction, and can effectively solve traditional abutment cast-in-situ construction method The problem of middle progress is slow, construction area area is big and environmental pollution is serious, and structure stress is clear, easy to control the quality, construction work Skill is simple.

In order to solve the above technical problems, the utility model proposes technical solution are as follows: a kind of full assembled light abutment, packet Pile foundation is included, the cushion cap that is mounted on above pile foundation, the platform cap being mounted on above cushion cap, platform cap left and right ends portion is mounted on and is located at and hold Double blocks above platform, the side positioned at platform cap and the parados bracket and ear wall that are mounted on above cushion cap, the parados bracket are Structure made of parados and bracket one-piece casting are prefabricated, double blocks connect with parados bracket and are mounted on above cushion cap, institute Stating double blocks is two symmetrically arranged breast boards Antivibration blocks, and described cap, double blocks, parados bracket and ear wall are interior set The UHPC prefabricated components of steel reinforcement cage, the pile foundation and cushion cap are the interior NC prefabricated components or UHPC prefabricated components for setting steel reinforcement cage, The cushion cap passes through band sealing end cover board H profile steel plate and connect with pile foundation, and described cap, ear wall, parados bracket pass through band sealing end respectively Cover board H profile steel plate is connect with cushion cap, passes through deformed bar between double blocks and platform cap, between parados bracket and ear wall Tensioning connection, deformed bar use 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, parados bracket divides 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 rear surface even application that UHPC carries out being in the milk closely knit at all segmental joints Layer, increases the leakproofness of junction.

The construction method of above-mentioned 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 working space；

B: scene splicing: carrying out splicing completion for the pile foundation of abutment, cushion cap, platform cap, parados bracket 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 are as follows:

A1: in-site measurement releases the position of pile foundation, with broken pile base top artificial after piling machine pile sinking to projected depth into The H profile steel and pile cover of the pre-buried cover plate of row are cast-in-place；

B1: lifting cushion cap is simultaneously installed by stake position, and it is pre- to protrude 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 later in place and carries out prestressed stretch-draw, carries out grouting and prestress hole to square groove later Road carries out mud jacking；

C1: lifting 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, in step a in the manufacturing process of each prefabricated component banding steel cage specific practice are as follows: Ribbed Bar is logical It crosses and is bound together with horizontal stripes rib and stirrup, bar splicing carries out mechanical connection using screw shell and forms firm reinforcing bar Cage, the prestressed pore passage of pre-buried cushion cap, platform cap, parados bracket, ear wall in reinforcing bar binding, pile foundation, the reserved band sealing end in cushion cap top Cover board 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 mesh sheet, Cushion cap, platform cap, parados bracket, ear wall steel reinforcement cage bottom the surrounding setting reinforced mesh of reserved connection square groove carry out reinforcement it It is hung in designed prefabricated punching block using crane afterwards.

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 utility model are:

1, each component (pile foundation, cushion cap, platform cap, double blocks, the parados ox in the full assembled light abutment of the utility model Leg and ear wall) prefabricated components can be used, can be a large amount of prefabricated in factory's progress, then spliced at the scene, it can be effective Solve the problems, such as that progress is slow, construction area area is big and environmental pollution is serious in traditional abutment cast-in-situ construction method；

2, platform cap, double blocks, parados bracket and the ear wall in the full assembled light abutment of the utility model are all made of The UHPC material for inside setting steel reinforcement cage, using the superhigh intensity of UHPC (ultra-high performance concrete material), high tenacity and superpower The characteristics of tensile property, on the one hand, normal concrete abutment bearing capacity in science of bridge building application can be overcome insufficient, easy The problems such as cracking；The self weight that can reduce abutment under same stress condition is the prefabricated of abutment, is transported, assembly has created The condition of benefit；The interior UHPC or NC material for setting steel reinforcement cage can be used in pile foundation and cushion cap, when using NC material, has to reduce and build Cost saves economic advantage, when using UHPC material, has the characteristics that further enhance abutment intensity；

3, the full assembled light abutment overall structure of the utility model has used UHPC (ultra-high performance concrete material), Since UHPC has the characteristics that high-densit, high-intensitive, high tenacity and superpower tensile property, excellent wearability, anticorrosive, The indexs such as durability, the capability of antidetonance have a distinct increment compared with normal concrete, can be well adapted for various adverse circumstances, significantly Extend application range of the pin-connected panel abutment in science of bridge building；

4, the full assembled light abutment of the utility model is cushion cap, and parados bracket carries out precast block, by platform cap and its Double block precast blocks at both ends provide highly advantageous condition to the production of steel reinforcement cage, and many for avoiding bar splicing is asked Topic；It is segmented that prefabricated size is small, simplifies the production of template, the lifting of very good solution substantially template, transportation problem, Ke Yiyou The service life of the shortening template of effect；

5, the full assembled light abutment of the utility model is configured with general on the basis of ultra-high performance concrete (UHPC) Logical steel reinforcement cage connect the cushion cap, parados bracket and platform cap of precast block with pair blocks using deformed bar integral, can be into One step enhances the tensile property of UHPC material and the shear resistant capacity of abutment, is connected using deformed bar to each piecemeal It connects and plays flexible connection well, have great advantage in terms of antidetonation than the rigid abutment that traditional monoblock type pours；

6, the pile foundation of the full assembled light abutment of the utility model blocks cover board H profile steel plate by band with cushion cap and connect, Platform cap, ear wall, parados bracket pass through band sealing end cover board H profile steel plate respectively and connect with cushion cap, between double blocks and platform cap, parados ox It is connected by deformed bar tensioning between leg and ear wall, each piecemeal of effective solution connects integral and anti-shearing force The problem of difference；It and is that a kind of area of section distribution more optimization, ratio of strength to weight is more reasonable economical disconnected with sealing end cover board H profile steel Face high efficiency section bar, band sealing end cover board H profile steel plate all have in all directions bending resistance strong, construction is simple, save the cost and Lightweight construction；Scientific and reasonable for structure, plasticity and flexibility are good, structural stability is high, are suitable for bearing vibration and shock loading Big building structure, anti-natural calamity ability is strong, the others connection type such as relatively traditional grout sleeve, band sealing end cover board H The stress performance of fashioned iron is good, assembling process is simple, controllable, especially suitable for the connection type between prefabricated components；

7, the full assembled light abutment of the utility model carries out each large volume component (such as cushion cap, parados bracket) Precast block, can be very good solve casting of concrete in mass during generate a large amount of heat of hydration to component generate it is a series of Quality problems；

8, the full assembled light abutment of the utility model uses full assembled, has speed of application block, simple process, work Journey system easy to control the quality, construction site occupy the advantages that few；

9, the full assembled light abutment of the utility model is to the requirement in assembling construction to mechanical transport and Lifting Capacity It is not high, it saves manpower, be conducive to realize mechanization.

Detailed description of the invention

Fig. 1 is the schematic perspective view of the utility model；

The side view of Fig. 2 the utility model；

Fig. 3 is the front view of the utility model；

Fig. 4 is that the pile foundation of the utility model connect detail drawing with cushion cap；

Fig. 5 is the piling strtucture schematic diagram of the utility model；

Fig. 6 is the detail drawing that the cushion cap of the utility model 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 utility model；

Fig. 8 is the detail drawing that the parados bracket of the utility model is connect with ear wall

Fig. 9 is the detail drawing that the platform cap of the utility model 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 embodiment

For the ease of understanding the utility model, below in conjunction with Figure of description and preferred embodiment to the utility model Work more comprehensively, meticulously describes, but the protection scope of the utility model is not limited to embodiment in detail below.

As shown in Figures 1 to 9, a kind of full assembled light abutment, including pile foundation 1, the cushion cap 2 that is mounted on the top of pile foundation 1, It is mounted on the platform cap 3 of 2 top of cushion cap, the double blocks 4 for being mounted on 3 left and right ends portion of platform cap and being located above cushion cap 2, is located at platform cap 3 side and the parados bracket 5 and ear wall 6 for being mounted on 2 top of cushion cap, double blocks 4 connect with parados bracket 5 and are mounted on cushion cap 2 tops, 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, pile foundation 1 For interior NC (normal concrete) prefabricated components for setting steel reinforcement cage, the binding of regular reinforcement cage, NC (normal concrete) stake it is prefabricated It is all completed in pre-fabricated factory with maintenance and first section tubular pole the lowermost pile top welding, then piecewise pile sinking at the construction field (site), And be attached using sleeve pile extension device, finally abolish the reserved band sealing end cover board H profile steel plate of the stake top cast-in-place pile crown of stake top again；It holds Platform 2 passes through band sealing end cover board H profile steel plate 7 and connect with pile foundation 1, and platform cap 3, ear wall 6, parados bracket 5 block cover board H by band respectively Shape steel plate 7 is connect with cushion cap 2, is opened by deformed bar 8 between double blocks 4 and platform cap 3, between parados bracket 5 and ear wall 6 Draw connection.

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 The connection of plate H profile steel plate 7 and pile foundation becomes 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 connection sleeve, common Ribbed Bar is HRB400, and bar diameter is 28mm or 25mm.

In the present embodiment, it is equipped with square groove 9 below cushion cap 2, platform cap 3, parados bracket 5 and ear wall 6, 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 and is connected by 8 tensioning of deformed bar；Reserve 4 65cm × 80cm × 80cm square grooves in 2 bottom of cushion cap 9, in stiffener net do not cut, convenient for being attached with pile foundation 1, guarantee 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 platform cap 3 is 10.4m × 1.6m × 1.2m, prefabricated U HPC breast boards grade Antivibration block 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 not comprising 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 rear surface even application that UHPC carries out being in the milk closely knit at all segmental joints Layer.

The construction method of above-mentioned full assembled light abutment, includes the following steps:

A: transport and lifting: when reach the pile foundation 1 of normal intensity value, cushion cap 2, platform cap 3, double blocks 4, parados bracket 5 and 6 prefabricated component of ear wall is lifted after transporting to working space；

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 The left and right ends portion of double blocks 4 and platform cap 3 is 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 are as follows:

(1): punching block production and determining UHPC material mix proportion: being joined according to the design 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 respectively and is poured punching block, the prefabricated punching block of pile foundation, together When design concrete material match ratio；

(2): banding steel cage: distinguishing banding steel cage in casting punching block, the prefabricated punching block of pile foundation；

(3): carrying out concreting: being made according to the match ratio for preparing concrete material in step a satisfactory UHPC material and NC material or only UHPC material are filled into the ready steel form in front, sufficiently vibrate to guarantee 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.

Specific splicing in the present embodiment, in step b are as follows:

A1: in-site measurement releases the position of pile foundation 1, with 1 top of broken pile base artificial after piling machine pile sinking to projected depth H profile steel 7 and the pile cover for carrying out pre-buried cover plate are cast-in-place；

B1: lifting cushion cap 2 is simultaneously installed by stake position, and the band sealing end cover board H profile steel plate 7 reserved at the top of broken pile base 1 protrudes into cushion cap 2 Bottom is reserved in square groove 9, and deformed bar 8 is worn after cushion cap 2 is in place and carries out prestressed stretch-draw, later to square groove 9 carry out grouting and Prestressed pore passage 81 carries out mud jacking；

C1: lifting 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 Different model band sealing end cover board H profile steel plate 7 correspond, worn after each section is in place deformed bar 8 carry 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 in step b are as follows: Ribbed Bar by with horizontal stripes rib and hoop Muscle is bound together, and bar splicing carries out mechanical connection using screw shell and forms firm steel reinforcement cage, pre- in reinforcing bar binding Bury the prestressed pore passage 81 of cushion cap 2, platform cap 3, parados bracket 5, ear wall 6, pile foundation 1, the reserved band sealing end cover board H profile steel in the top of cushion cap 2 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 after the surrounding setting reinforced mesh of reserved connection square groove 9 carries out reinforcement It is hung in designed prefabricated punching block using crane.

In the present embodiment, transported in step e using the iant flat truck that loading capacity is no less than 1000 tons, and use and be no less than 300 tons of pedrail cranes are lifted.

Claims (7)

1. a kind of full assembled light abutment including pile foundation (1), the cushion cap (2) being mounted on above pile foundation (1), is mounted on cushion cap (2) platform cap (3) above, the double blocks (4) for being mounted on platform cap (3) left and right ends portion and being located above cushion cap (2), positioned at platform cap (3) side and parados bracket (5) He Erqiang (6) being mounted on 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) be in set steel reinforcement cage 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 by band sealing end cover board H profile steel plate (7) with pile foundation (1), 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 It is equipped with square groove (9) below bracket (5) He Erqiang (6), cushion cap (2) and pile foundation (1), platform cap (3) and cushion cap (2), parados bracket (5) band sealing end cover board H profile steel plate (7) is located in square groove (9) when connecting with cushion cap (2), ear wall (6) with cushion cap (2), 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 between by deformed bar (8) tensioning.

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 between each prefabricated section by deformed bar (8).

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 are equipped with stretch-draw prestressing force duct (81) in the parados bracket (5), described Divide between parados bracket (51) and is connected by deformed bar (8) tensioning.

6. full assembled light abutment according to claim 5, it is characterised in that: it is described divide between parados bracket (51) It is connected on length direction by " 7 " word mouth (52).

7. full assembled light abutment according to claim 1 to 6, it is characterised in that: at all segmental joints There is epoxy resin layer with the rear surface even application that UHPC carries out being in the milk closely knit.