CN110029574A - The novel bridge telescopic device and its installation method that can quickly repair - Google Patents
The novel bridge telescopic device and its installation method that can quickly repair Download PDFInfo
- Publication number
- CN110029574A CN110029574A CN201910360179.4A CN201910360179A CN110029574A CN 110029574 A CN110029574 A CN 110029574A CN 201910360179 A CN201910360179 A CN 201910360179A CN 110029574 A CN110029574 A CN 110029574A
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- steel plate
- telescopic device
- horizontal steel
- vertical reinforcement
- notch
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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
- E01D19/06—Arrangement, construction or bridging of expansion joints
Abstract
The present invention provides a kind of novel bridge telescopic device that can quickly repair, and vertical reinforcement (4), transverse steel (5) and genesis analysis reinforcing bar are arranged in the notch of expansion joint；A pair of of deformed steel is symmetrically fixed on vertical reinforcement (4) upper end and watertight rubber item (2) are set；In deformed steel plastic plate arranged below (3), casting concrete forms notch anchorage zone (10) to pouring hole (6) in the middle part of horizontal steel plate (14) downwards, after notch anchorage zone (10) reach design strength, flexible material (9) are filled in horizontal steel plate (14) above notched areas.Novel bridge telescopic device of the invention is suitable for the update of existing bridge extension joint, can also the construction and installation simultaneously in newly building bridge, structure is simple, and practicability is wide, good economy performance, is worthy to be popularized.
Description
[technical field]
The invention belongs to the rail traffics technical field of buildings such as high-speed railway, subway, light rail, and in particular to one kind is suitable for
The telescopic device and its installation method of highway or road and bridge and application.
[background technique]
Bridge extension joint is bridge floor system important component, major function be adapt to bridge temperature load,
The deformation generated under concrete shrinkage and creep and Vehicle Load, to guarantee vehicle pass-through on bridge structure stress safety and bridge
Safety and comfortable.Meanwhile bridge extension joint also has water-proof function.
Maurer expansion installation is widely used in Bridges in Our Country structure.Factual survey discovery, anchorage zone concrete cracking are broken
Broken is one of Maurer expansion installation Common Diseases, and such disease is mainly closely bound up with expansion joint site operation installation quality, directly
Connecing influences travel safety and main beam stress.When concrete cracking broken disease in anchorage zone is slight, often takes to cut to crack and break
The measure poured again after damage concrete is repaired；And the expansion joint more serious for disease, it often needs to abolish anchorage zone
New expansion joint is re-replaced after concrete, this measure is larger to the existing traffic impact of bridge floor, certainly will also increase maintenance cost
Investment.
For telescopic device is installed or repairs replacement, exist centainly on newly building bridge and servicing bridges construction method
Difference, specific as follows:
1, newly building bridge telescopic device is installed
The installation of newly building bridge telescopic device is generally used " anti-fluting " construction method at present, which is by road surface, bridge
Surfacing is unified at face, expansion joint as a whole, and to guarantee flatness, then the road surface of making is dug in expansion joint position
It opens, performs expansion joint according still further to design drawing, expansion joint top surface absolute altitude need to be flushed with the road surface or bridge floor holding that two sides have been completed.
Although the method simplifies the process of construction to a certain extent, it is ensured that road surface is connected and smooth with the absolute altitude of bridge floor
It spends and crosses, but there is also some drawbacks:
(1) stretching, there are problems for slot area bonding interface.It needs that backfill is expected and paved when expansion joint notch excavates
Ground surface material digs up, then pours anchorage zone concrete material.Some materials are bonded in pocket bottom and are difficult to clearly when practice of construction
Reason is clean, and so as to cause expansion joint anchorage zone the old and new's material bonding interface, there are quality problems.
(2) beam-ends rubbish blocks.In practice of construction, it is easy when excavating paver in the notch of expansion joint so that part material
Expect the beam-ends that falls, if unit in charge of construction does not do timely cleaning, easily causes beam-ends to block rubbish, normally become to limit girder
Shape displacement, produces bigger effect abutment parados, girder beam-ends and Bearing Seat Force safety and normal use.
(3) bar planting and installation quality are difficult to ensure." anti-fluting " method installation expansion joint is often that bridge construction is last together
Process, in order to strive for open to traffic as early as possible, generally require compression the construction time, when expansion joint being caused to construct bar planting depth not enough,
Welding quality is not good enough, spacer bar installation position is inaccurate, and expansion joint installation quality is caused to be unable to satisfy design requirement.
2, servicing bridges telescopic device maintenance replacement
The maintenance replacement of servicing bridges telescopic device usually requires to carry out traffic control first, then mixed according to anchorage zone is cut
Solidifying soil, cleaning rubbish, implantation or welding anchor connection reinforcing bar lay anticracking distribution bar, pour anchorage zone concrete material
Sequence is constructed, can open to traffic after after anchorage zone, concrete strength meets design requirement.
Above scheme is the common method of servicing bridges telescopic device maintenance replacement, but similarly has the disadvantage that:
(1) traffic control is leading, and maintenance time is limited.Highway biggish for vehicle flowrate, local road and city
For road, the replacement construction operation at expansion joint need to be usually carried out when night, vehicle flowrate was smaller, and expansion joint notch concrete
Cut, bar planting, anchorage zone concrete pour and health time-consuming longest in the whole process, in the current pressure of traffic and actually have
It imitates under conditions of the working time is limited in pairs, pursuing speed simply frequently can lead to construction quality and be difficult to ensure, cause expansion joint
The shortening of service life.When bridge width is larger, telescopic device replacement also needs to carry out stage by stage, therefore the expansion joint of stitching portion
Anchoring, fashioned iron welding quality requirement are higher, and difficulty of construction is also synchronous to be increased.
(2) maintenance replacement heavy workload, waste are obvious.As previously mentioned, expansion joint anchorage zone concrete cracking breakage disease
It is very common, if without punishing in time, under the comprehensive function of a variety of unfavorable factors such as vehicular load and the infiltration of sleet water, disease
Accelerated development is influenced travel safety until anchorage zone is failed by evil.For the relatively serious bridge of anchorage zone cracking failure disease
Beam telescopic device, re-replacing after being removed is way more general at present.Still clearly for notch lower anchor performance
And good telescopic device, the Faville repair replacement heavy workload, artificial mechanism investment is more, some are wasted unavoidably.
In conclusion in order to evade institute in above-mentioned newly building bridge and the installation of servicing bridges telescopic device or maintenance replacement process
There are the drawbacks of or disadvantage, ensure the construction quality, improve construction convenience, accelerate speed of application under the premise of, invent one kind
Have the advantages that the demand for the novel bridge telescopic device quickly repaired is very urgent.
[summary of the invention]
The purpose of the present invention is overcoming existing conventional maurer expansion seal defect, existing bridge or peace can be installed in by providing one kind
The novel bridge telescopic device of loaded on newly building bridge, easy installation and maintenance, easy construction.
To achieve the goals above, the present invention provides a kind of novel bridge telescopic device that can quickly repair, described flexible
Device includes deformed steel, watertight rubber item, vertical reinforcement, transverse steel, genesis analysis reinforcing bar and plastic foamboard；
Vertical reinforcement 4 is set in the notch of expansion joint anchorage zone, is erected at transverse steel between vertical reinforcement 4, in transverse direction
Multiple rows of genesis analysis reinforcing bar is laid on reinforcing bar 5；
The deformed steel includes horizontal steel plate 14 and the special-shaped lug boss 1 that 14 side of horizontal steel plate is arranged in, the abnormal shape
Lug boss 1 includes vertical portion 21 and the upper turn of bilge 22 being connected, and has at the middle part of vertical portion 21, with the ipsilateral one side wall of upper turn of bilge 22
There is convex edge 23, convex edge 23 and upper turn of bilge 22 collectively form special-shaped steel type chamber 24；A pair of of deformed steel is symmetrically fixed on vertical reinforcement 4
Upper end, and 1 direction of lug boss is opposite, watertight rubber item 2 are arranged between the deformed steel chamber 24 to deformed steel；
Plastic plate 3 is set in deformed steel position below, supports plastic plate 3 and the end of the genesis analysis reinforcing bar
It connects, by 14 clamping of horizontal steel plate；
Notch anchorage zone 10 is formed from the downward casting concrete of pouring hole 6 at 14 middle part of horizontal steel plate, to notch anchorage zone
After 10 reach design strength, flexible material 9 is filled in 14 or more horizontal steel plate.
In the present invention, non-limiting for ease of description, will be known as along spanning direction or direction of traffic vertical bridge to or it is vertical
To by direction normal thereto as direction across bridge or transverse direction.
In the present invention, the bridge extension joint is suitable for the expansion joint between the beam-ends of bridge two sides, is also applied for beam-ends
Expansion joint between parados, therefore, expansion joint anchorage zone notch be located between the beam-ends of bridge two sides or beam-ends and parados it
Between.
According to a kind of preferred embodiment, location hole 12 is set, silk is arranged in 4 upper end of vertical reinforcement on horizontal steel plate 14
Tooth makes vertical reinforcement 4 pass through location hole 12 and the deformed steel of realization and the connection of vertical reinforcement 4 is secured with nuts.
In the present invention, the nut for fixing vertical reinforcement 4 and the deformed steel includes upper layer nut 7 and lower layer's nut
8 (can further comprise rubber pad).Wherein, lower layer's nut 8 plays installation positioning and support, and upper layer nut 7 then will be horizontal
Steel plate 14 and vertical reinforcement 4 are connected to form entirety, realize preferable power transmission anchoring property.
Preferably, the location hole 12 is lateral elongate holes.The effect of its strip location hole is to solve practice of construction
When pre-buried or implantation vertical reinforcement position and actual apertures groove location the problem of can not exactly matching, grown by being arranged along direction across bridge
Strip-shaped hole can carry out the real-time deviation correcting of lateral position, improve applicability.
Pouring hole 6 is preferably provided at four strip location holes, the 12 diagonal line center position of horizontal steel plate 14, for circle
Shape hole is equipped with port lid.Screw thread is made in Kong Zhoutong, is poured convenient for matched port lid by screw thread installation is fixed in due course closing
Hole.Adjustment 8 elevation of lower layer's nut and the handle hole of positioning when pouring hole is used as expansion joint to install on the one hand；On the other hand it is used as slot
The pouring construction hole of mouth anchorage zone 10.
According to a kind of preferred embodiment, plastic plate 3 is polyethylene foams plate.Plastic plate 3 is embedded in horizontal steel
Between 14 or less plate, girder and parados end or between girder and girder, side wall is abutted with genesis analysis reinforcing bar, and top is borrowed
Horizontal steel plate clamping is helped, to prevent concreting shift.Plastic plate 3 functions as notch anchorage zone concreting side
Mould prevents concrete spillage in casting concrete.
When installation, according to the obtained installed height mark setting out data of measurement, the mounting height of first successive step lower layer nut 8, to
After telescopic device lifting of the invention is in place, so that vertical reinforcement 4 is passed through location hole 12, horizontal steel plate is located in lower layer's nut 8
More than, then by the pouring hole 6 on 14 surface of horizontal steel plate, lower layer's spiral shell is adjusted by tools such as torque spanneres by operator
The final height of mother 8, keeps horizontal steel plate accurately in place, then installs upper layer nut 7.
Preferably, horizontal steel plate 14 and settable rubber pad at the link position of lower layer nut 8 are rigid to solve local location
The phenomenon or problem of degree mutation and lateral stressed unevenness.
The maintenance replacement construction of later period expansion joint notch top flexible material may cause upper layer nut 7 in order to prevent
Damage, when 14 thickness of horizontal steel plate is enough, upper layer nut 7 is embedded in horizontal steel plate 14；When horizontal steel plate 14 thickness not
When being enough embedding nut, includes protectiveness material layer outside upper layer nut 7, carried out in advance for example, by using epoxy resin material
Perfusion package is to protect upper layer nut 7.
In the present invention, the following are notch anchorage zone 10, the concrete for constructing notch anchorage zone 10 should be selected horizontal steel plate
Steel fiber reinforced concrete, to improve itself cracking resistance.
In the present invention, fill the flexible material in 14 or more horizontal steel plate can be selected from elastic concrete, bituminous concrete,
ECC high-tenacity fiber enhances cement-base composite material etc..
In the present invention, in order to ensure effective connection of flexible material and horizontal steel plate, to the table of the horizontal steel plate 14
Hair pulling treatment is made in face and the side of expansion joint lug boss 1.Or further, before filling flexible material, notch side above
Face and bottom surface brushing sticking layer oil.
Novel bridge telescopic device, the present invention also provides installation method, the installation method can be quickly repaired based on above-mentioned
The following steps are included:
A, special-shaped lug boss 1 is welded with horizontal steel plate 14 by twin fillet wolt, make integrally obtain it is described different
Fashioned iron；
B, more vertical reinforcements 4 are installed on bridge main beam two sides or girder and parados, make silk tooth at the top of vertical reinforcement；
C, transverse steel 5 is laid on vertical reinforcement 4；Genesis analysis reinforcing bar is laid on transverse steel 5；
D, plastic plate 3 is set in deformed steel position below, makes the end of plastic plate 3 Yu the genesis analysis reinforcing bar
It abuts, by 14 clamping of horizontal steel plate；
E, installed height mark setting out data is measured, lower layer's nut 8 is installed, the upper end of vertical reinforcement 4 is made to pass through horizontal steel plate 14
Location hole 12, then 3 upper end of plastic plate adjusts the final mounting height of lower layer's nut 8 by 14 clamping of horizontal steel plate, then install
Upper layer nut 7；
F, notch anchorage zone 10 is formed by the downward casting concrete of pouring hole 6 on horizontal steel plate 14, until pouring hole 6
Pulp, to 10 health of notch anchorage zone to design strength；
G, flexible material is filled on 14 top of horizontal steel plate to form flexible material layer 9, the upper table of the flexible material layer 9
Face height is concordant with the special-shaped overhead height of lug boss 1；
H, between deformed steel chamber 24 install watertight rubber item 2, then can site clearing, open to traffic.
In above-mentioned installation method, since bridge extension joint is arranged along bridge expanssion joint length direction, preferably
Adjustable mounting height makes described device have unidirectional horizontal slope.Therefore when implementation steps F, each pouring on contracting seam length direction
Building hole 6, there is also differences in height, should pour by lower region at this time, after lower 6 pulp of pouring hole, install mating
Port lid, then successively carry out upper zone again pours process, gradually constructs, until completing whole notch area's concretings.
[beneficial effect]
The notch of telescopic device is divided into upper and lower two solely by horizontal steel plate by novel bridge telescopic device of the present invention
Vertical part, horizontal steel plate fill flexible material the above are upper notch region directly to bear Vehicle Load, horizontal steel plate
The following are lower part notch anchorage zone, steel fiber reinforced concrete is poured to establish preferable anchoring system.It is soft when upper notch region
Property material when there is crack, damaged disease, if lower part notch anchorage zone working performance is good, without to entire telescopic device into
Row replacement, only need to cut upper notch regional flexibility material, fill again compacting after can open to traffic, to existing bridge deck traffic
Interference time is short, realizes the purpose of quickly reparation, greatly improves the maintenance speed of bridge extension joint.Meanwhile it also avoiding
It cuts and is poured after the concrete of anchorage zone again, replaces unnecessary waste caused by expansion joint, saved project cost and support
Protect cost.
Novel bridge telescopic device of the present invention can guarantee construction quality.For newly building bridge, the present invention changes
It has been apt to the sequence of construction of telescopic device.The mode that original telescopic device generallys use " anti-fluting " is constructed, so that flexible
Device usually becomes last procedure of bridge construction, due to the limitation of duration and the urgency of open to traffic, construction quality
It often not can guarantee, and in " anti-fluting " construction, the material for backfilling preformed groove is difficult to clean out and become beam-ends rubbish, to master
Beam, parados and Bearing Seat Force and normal use bring adverse effect.Bridge extension joint of the present invention, can be in construction
Other working procedures carry out in parallel, can largely ensure the construction quality；For servicing bridges, if top flexible material
Badly broken cuts time that flexible material pours again considerably less than expansion joint is reinstalled, to avoid because of matter of time
Blindly promote the decline of construction quality caused by speed.
Telescoping apparatus of the present invention has preferable economy.When in particular for maintenance or replacement, without more
Entire telescopic device is changed, when horizontal steel plate anchorage zone working performance below is good, only needs to change top flexible material layer i.e.
Can, telescopic device maintenance cost is greatly reduced, can utmostly reduce influence of the telescopic device maintenance for traffic.In addition,
The floorings displacement due to temperature and traffic loading effect generation can be absorbed in flexible material, guarantees that surface layer is not in cracking damage
It is bad, extend the telescopic device service life.
[Detailed description of the invention]
Fig. 1 is that novel bridge telescopic device of the invention installs cross-sectional configuration figure；
Fig. 2 is the abnormally-structured figure in expansion joint；
Fig. 3 is novel bridge telescopic device position of opening schematic diagram of the invention；
[specific embodiment]
Following embodiment for explaining technical solution of the present invention without limitation.
Embodiment 1 is to existing exchanging bridge telescopic device
Certain 3 × 20m prestressed concrete freely-supported hollow slab bridge, the original expansion joint position telescopic device cracking failure of abutment are tight
Weight, need to be replaced.Plan former Maurer expansion installation and is changed to novel bridge telescopic device of the invention.
(1) processing and manufacturing of expansion joint main body
Horizontal steel plate 14 and special-shaped lug boss 1 as illustrated in fig. 1 and 2, by twin fillet wolt by horizontal steel plate 14 and abnormity
Lug boss 1 is welded as a whole, and becomes expansion joint deformed steel.
In order to adapt to install, pouring hole 6 and location hole 12 (as shown in Figure 3) are opened on horizontal steel plate 14.Wherein, it pours
Hole 6 is round hole, and for screw thread installation and concrete pouring operation, hole wall is processed screw thread, can be used cooperatively with mating port lid.It is fixed
Position hole 12 is lateral elongate holes.
In order to ensure horizontal steel plate 14 and special-shaped lug boss 1 connect with cast-in-place concrete layer 15 and the effective of flexible material layer 16
It connects, makees hair pulling treatment in the upper and lower surface of horizontal steel plate 14 and special-shaped 1 side wall of lug boss.
(2) expansion joint in-site installation
After closing lane, ensuring construction safety, freely-supported hollow slab bridge disease expansion joint is removed, avoids damaging in demolishing process
Hurt cored slab top plate and parados, while retaining available former vertical reinforcement as far as possible.
Vertical reinforcement 4 is installed at two sides beam-ends 13 (or beam-ends and parados) using bar planting mode.
Transverse steel 5 is set between vertical reinforcement 4 by way of welding or binding, then lays genesis analysis on it
Reinforcing bar.Wherein, installation of the production silk tooth in 4 upper end of vertical reinforcement to cooperate lower layer's nut 8.
Between two sides beam-ends 13, the height below of horizontal steel plate 14 setting polyethylene foams plate 3.Polyethylene
Side form when plastic plate is as the concreting of notch anchorage zone, therefore one end of genesis analysis reinforcing bar can be made to abut foam plastic
Flitch deforms displacement when pouring to prevent it, and the position for adjusting plastic plate ensures that spillage does not occur when casting concrete.
Installed height mark setting out data is measured, primarily determines the installation mark of lower layer's nut 8 on each vertical reinforcement 4
Height is installed lower layer's nut 8 (containing rubber pad), and then lifting deformed steel keeps it in place, and vertical reinforcement 4 passes through horizontal steel plate 14,
3 upper end of plastic plate and 14 clamping of horizontal steel plate.
After deformed steel lifting is in place, each lower layer is adjusted using torque spanner by 14 surface pouring hole 6 of horizontal steel plate
The final mounting height of nut 8；Then upper layer nut 7 is fastened, deformed steel and vertical reinforcement 4 are connected as entirety, form collaboration
The anchor connection system of stress.
Wherein, 14 thickness of horizontal steel plate is not enough to embedded upper layer nut 7, uses to exposed upper layer nut and pours asphalt mixtures modified by epoxy resin
The mode of rouge protects it.
By pouring hole 6 to 14 or less casting concrete of horizontal steel plate to form notch anchorage zone 10, until concrete from
Pouring hole 6 overflows, and mating port lid is in time installed on pouring hole 6.Due to the presence of deck transverse slope, there is height in telescopic device
Difference pours the progress of process sectional, pours since lower region and close pouring hole 6, successively carries out to higher region, directly
It is finished to pouring, then covers health.
It is viscous to the wall brushing of 14 upper surface of horizontal steel plate and expansion joint lug boss 1 after concrete curing to design strength
Layer oil, pours flexible material then to form flexible material layer 9.
Finally, installing watertight rubber item 2, subsequent site clearing, open to traffic between deformed steel.
Since the notch of telescopic device is divided into upper and lower two by horizontal steel plate by novel bridge telescopic device of the invention
Independent sector, when crack, damaged disease occurs in the flexible material layer in the upper notch region more than horizontal steel plate, if horizontal steel
The cast-in-place concrete layer working performance of plate lower part notch below anchorage zone is good, then without carrying out more to entire telescopic device
It changes, need to only fill flexible material layer again can be realized quick reparation, reduce maintenance consuming and maintenance cost.
Novel bridge telescopic device of the invention is suitable for the update of existing bridge extension joint, can also be in newly building bridge
Construction and installation simultaneously, practicability is wide, good economy performance, is worthy to be popularized.
Claims (10)
1. the novel bridge telescopic device that can quickly repair, it is characterised in that the telescopic device includes deformed steel, watertight rubber
Item, vertical reinforcement, transverse steel, genesis analysis reinforcing bar and plastic foamboard；
Vertical reinforcement (4) are set in the notch of expansion joint anchorage zone, are erected at transverse steel between vertical reinforcement (4), in transverse direction
Multiple rows of genesis analysis reinforcing bar is laid on reinforcing bar (5)；
The deformed steel includes the special-shaped lug boss (1) of horizontal steel plate (14) and setting in horizontal steel plate (14) side, described different
Type lug boss (1) include vertical portion (21) with the upper turn of bilge (22) that is connected, at the middle part of vertical portion (21), same with upper turn of bilge (22)
The one side wall of side has convex edge (23), and convex edge (23) and upper turn of bilge (22) collectively form special-shaped steel type chamber (24)；It will be a pair of special-shaped
Steel is symmetrically fixed on vertical reinforcement (4) upper end, and lug boss (1) direction is opposite, and watertight rubber item (2) is arranged at this to deformed steel
Deformed steel chamber (24) between；
In deformed steel position setting plastic plate (3) below, support plastic plate (3) and the end of the genesis analysis reinforcing bar
It connects, by horizontal steel plate (14) clamping；
Casting concrete forms notch anchorage zone (10) to pouring hole (6) in the middle part of horizontal steel plate (14) downwards, anchors to notch
After area (10) reaches design strength, flexible material (9) are filled in horizontal steel plate (14) above notched areas.
2. novel bridge telescopic device according to claim 1, it is characterised in that location hole is arranged on (14) in horizontal steel plate
(12), silk tooth is arranged in vertical reinforcement (4) upper end, so that vertical reinforcement (4) is passed through location hole (12) and the institute of realization is secured with nuts
State the connection of deformed steel Yu vertical reinforcement (4).
3. novel bridge telescopic device according to claim 1, it is characterised in that the location hole (12) is lateral strip
Shape hole.
4. novel bridge telescopic device according to claim 1, it is characterised in that plastic plate (3) is polyethylene foams
Plate.
5. novel bridge telescopic device according to claim 2, it is characterised in that the nut include upper layer nut (7) and
Lower layer's nut (8).
6. novel bridge telescopic device according to claim 5, it is characterised in that when horizontal steel plate (14) thickness is enough,
Upper layer nut (7) is embedded in horizontal steel plate (14)；When the thickness of horizontal steel plate (14) is not enough to embedding nut, in upper layer spiral shell
It include protectiveness material layer outside female (7).
7. novel bridge telescopic device according to claim 1, it is characterised in that the flexible material is selected from elastic coagulation
Soil, bituminous concrete, ECC high-tenacity fiber enhance cement-base composite material.
8. novel bridge telescopic device according to claim 1, it is characterised in that the surface of the horizontal steel plate (14)
Make hair pulling treatment with the side of special-shaped lug boss (1).
9. expansion joint anchorage zone notch is located between the beam-ends of bridge two sides or between beam-ends and parados.
10. the installation method of novel bridge telescopic device described in any one of -9 claims according to claim 1, the side
Method the following steps are included:
A, special-shaped lug boss (1) and horizontal steel plate (14) are welded by twin fillet wolt, make integrally obtain it is described different
Fashioned iron；
B, more vertical reinforcements (4) are installed on bridge main beam two sides or girder and parados, make silk tooth at the top of vertical reinforcement；
C, transverse steel (5) are laid on vertical reinforcement (4)；Genesis analysis reinforcing bar is laid on transverse steel (5)；
D, in deformed steel position setting plastic plate (3) below, make the end of plastic plate (3) Yu the genesis analysis reinforcing bar
It abuts, by horizontal steel plate (14) clamping；
E, installed height mark setting out data is measured, is installed lower layer's nut (8), the upper end of vertical reinforcement (4) is made to pass through horizontal steel plate
(14) then location hole (12), plastic plate (3) upper end adjust the final peace of lower layer's nut (8) by horizontal steel plate (14) clamping
Dress height, then upper layer nut (7) are installed；
F, by the pouring hole (6) on horizontal steel plate (14), casting concrete forms notch anchorage zone (10) downwards, until pouring
Hole (6) pulp, to notch anchorage zone (10) health to design strength；
G, fill flexible material on horizontal steel plate (14) top to be formed flexible material layer (9), the flexible material layer (9) it is upper
Apparent height is concordant with the overhead height of the special-shaped lug boss (1)；
H, watertight rubber item (2) are installed between deformed steel chamber (24), installation is completed in site clearing.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021088394A1 (en) * | 2019-11-04 | 2021-05-14 | 南京毛勒工程材料有限公司 | Pouring method for filler in anchorage zone of expansion joint |
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| CN204589800U (en) * | 2015-04-22 | 2015-08-26 | 浙江嘉桥交通建设有限公司 | A kind of dual fail-safe bridge expansion joint structure |
| CN204608598U (en) * | 2015-05-08 | 2015-09-02 | 山西省交通科学研究院 | A kind of seamless bridge joint structure |
| CN206396629U (en) * | 2016-12-26 | 2017-08-11 | 河北省交通规划设计院 | A kind of Fast Installation fishback retractor device |
| CN107974935A (en) * | 2017-12-11 | 2018-05-01 | 中国水利水电第十工程局有限公司 | A kind of SF combs flute profile telescopic device and its construction method of installation |
| CN109024260A (en) * | 2018-09-10 | 2018-12-18 | 郑州航空工业管理学院 | Buffer-type bridge extension joint |
| CN210134336U (en) * | 2019-04-30 | 2020-03-10 | 南京博瑞吉工程技术有限公司 | Novel bridge expansion device capable of being quickly repaired |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021088394A1 (en) * | 2019-11-04 | 2021-05-14 | 南京毛勒工程材料有限公司 | Pouring method for filler in anchorage zone of expansion joint |
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