CN110055905A - A kind of reinforcement means of novel fabricated bricklaying donor - Google Patents
A kind of reinforcement means of novel fabricated bricklaying donor Download PDFInfo
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- CN110055905A CN110055905A CN201910190428.XA CN201910190428A CN110055905A CN 110055905 A CN110055905 A CN 110055905A CN 201910190428 A CN201910190428 A CN 201910190428A CN 110055905 A CN110055905 A CN 110055905A
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- 230000002787 reinforcement Effects 0.000 title claims abstract description 24
- 239000004567 concrete Substances 0.000 claims abstract description 53
- 239000004744 fabric Substances 0.000 claims abstract description 25
- 238000009434 installation Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 11
- 239000011178 precast concrete Substances 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 17
- 239000003292 glue Substances 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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Abstract
The invention discloses a kind of reinforcement means of novel fabricated bricklaying donor comprising has following steps: a, precast concrete arch block；B, concrete arch block is neat along tiling arranged in a straight line, to form arch block linear array；C, in the upper surface of arch block linear array tiling FRP cloth, to obtain flexible donor；D, mortar cover is poured；E, the permanent support of left and right side is poured；F, fixed placement left and right side temporary support；G, left and right side jack is installed；H, prepare lifting；I, flexible donor lifts by crane and forms arch ring；J, lifting bolt is dismantled；K, pushing tow arch ring is in place；L, left and right side jack resets；M, step h- step l is repeated to complete subsequent arch ring installation exercise, until required arch ring is mounted below the bridge floor of old bridge；N, left and right side temporary support is removed.The reinforcement means can effectively process old bridge structure, and work progress is convenient and quick, durability is good.
Description
Technical field
The present invention relates to technical field of civil engineering more particularly to a kind of reinforcement means of novel fabricated bricklaying donor.
Background technique
Use of the arch bridge structure in China has a long history, and arch bridge structure has good load-bearing property and durable
Property.Country makes the bridge cause in China be developed on an unprecedented scale the investment energetically of super highway since the 1990s；With
Economic society constantly progress, China's car ownership be also constantly increasing, along with vehicle fleet size be continuously increased with
And vehicle load is increasing, and certain concrete beam bridges can have been can exceed that greatly with the vehicle-mounted specification of original satisfaction very much.
In addition, the rigid muscle corrosion as caused by environmental factor, also results in concrete performance degeneration, and then make bridge structure
Performance degradation speed accelerate, bearing capacity decline, reduce structure service life, affect normal use, specific manifestation is such as
Under:
1, in simply supported girder bridge, reinforcing bar deformation and corrosion are irrecoverable damage；
2, concrete beam bridge structure is under heavier vehicular load, and the cracking of concrete can cause the Damage of Corroded of reinforcing bar, to drop
The service performance of low structure；
3, the collapsing of bridge is brittle break, once consequence of failure is serious.
Based on the above situation, it may be appreciated that Partial Bridges are easier to occur due to caused by reinforcement corrosion after using the shorter time limit
The mechanical properties decreases such as durability, intensity, thus caused maintenance difficulties are substantially increased, and bridge machinery and assessment cycle contract significantly
It is short, huge manpower and material resources are expended, What is more can lose traffic carrying capacity, cause safety accident, and in the long run, this is not
Conducive to the development and progress of society.So, it is necessary to existing highway bridge is reinforced by effective means.
Summary of the invention
The purpose of the present invention is to solve the shortcomings of the prior art and providing a kind of reinforcing of novel fabricated bricklaying donor
The reinforcement means of method, the novel fabricated bricklaying donor can effectively process old bridge structure, work progress
It is convenient and quick, durability is good, labor cost, time cost can be efficiently reduced and can effectively extend old bridge
The service life of structure.
In order to achieve the above objectives, the present invention is achieved through the following technical solutions.
A kind of reinforcement means of novel fabricated bricklaying donor, includes following steps, specific:
A, precast concrete arch block, concrete arch block are formed by concreting, and the longitudinal cross-section of concrete arch block is in isosceles ladder
The width value of shape shape and concrete arch block upper end is big compared with the width value of lower end；
B, prefabricated concrete arch block is neat along tiling arranged in a straight line according to required length, and two adjacent concrete
There is gap, to form arch block linear array between arch block；For being placed in the concrete arch block of lifting position, inside
It is embedded with metal threaded casing, and the upper end of metal threaded casing exposes to the upper surface of corresponding concrete arch block, each metal spiral shell
The inside of line casing offers upwardly opening internal thread hole respectively；
C, the upper surface point of each concrete arch block in the upper surface of arch block linear array tiling FRP cloth, arch block linear array
It is not fixedly connected with FRP cloth, to obtain flexible donor；
D, one layer of mortar is poured in the upper surface of flexible donor, to form mortar cover, which is located at flexible supply
The upper surface of the FRP cloth of body；
E, in the left side bridge pier right end side of old bridge by way of concreting permanent support on the left of pouring molding, in old
Have the right side bridge pier left end side of bridge permanent support on the right side of pouring molding by way of concreting, the permanent support in left side with
The left side bridge pier of old bridge pours integrally, and the right side bridge pier of the permanent support in right side and old bridge pours integrally；Wherein,
The permanent bearing surface in left side that the permanent support in left side is provided with normal direction towards upper right side, the permanent support in right side are provided with normal side
To towards the permanent bearing surface in upper left right side, and the permanent support in left side and the permanent support in right side or so face are arranged；
F, the temporary support on the left of the front end side fixed placement of the permanent support in left side, in the front end side of the permanent support in right side, fixation is put
Set right side temporary support, left side temporary support and right side temporary support or so face arrangement, the rear end face of left side temporary support and
Left side shear key, right side are installed between the permanent support of front end face contact and left side temporary support and left side of the permanent support in left side
It is filled between the front end face contact and the permanent support of right side temporary support and right side of the permanent support of the rear end face of temporary support and right side
Equipped with right side shear key；Left side temporary support is provided with the left side being aligned with before and after the permanent bearing surface in the left side of the permanent support in left side
Temporary support face, it is interim that right side temporary support is provided with the right side being aligned with before and after the permanent bearing surface in the right side of the permanent support in right side
Bearing surface；
G, dynamic in right side temporary support installation anterior-posterior horizontal in the left side jack of left side temporary support installation anterior-posterior horizontal movement
The right side jack of work；
H, each metal threaded casing of flexible donor screws in lifting bolt respectively, and installs crossbeam in the lifting of loop wheel machine driving end,
Crossbeam is connect with each lifting bolt of flexible donor respectively by lifting cable；
I, loop wheel machine lifting and flexible donor is lifted, in the process, the work of each concrete arch block in flexible donor in gravity
It is gradually bonded with adjacent concrete arch block side respectively with lower, flexible donor just automatically forms the arch of domed shape after slinging
Circle；After flexible donor is sling completely and forms arch ring, the left side that the left end of arch ring is taken to temporary support on the left of being put in is interim
It takes and is put on the right side temporary support face of right side temporary support on bearing surface and by the right end of arch ring, the left part of arch ring is located at a left side
The rear end side of side jack, the right part of arch ring are located at the rear end side of right side jack；
It j, will be under each lifting bolt disassembly on arch ring after arch ring is taken and is put between left side temporary support and right side temporary support
Come and stops lifting movement；
K, jack, right side jack on the left of simultaneously operating, left side jack the left part of pushing tow arch ring and make arch ring backwards
Left end be passed to the permanent bearing surface in left side of the permanent support in left side, right side jack backwards pushing tow arch ring right part simultaneously
So that the right end of arch ring is passed to the permanent bearing surface in right side of the permanent support in right side, arch ring is in left side jack, right side thousand
It is elapsed backwards under the synchronous effect on jin top to designated position below the bridge floor of old bridge, and the upper end of arch ring and old bridge
The bridge floor following table face contact of beam；
L, after first arch ring is installed in place, operation left side jack, right side jack simultaneously make left side jack, right side thousand
Jin top is reset to reset condition；
M, step h- step l is repeated to complete subsequent arch ring installation exercise, until required arch ring is mounted on the bridge of old bridge
Below face；
N, after the installation is completed to all arch rings, by between the permanent support of left side temporary support and left side left side shear key remove with
And remove the right side shear key between the permanent support of right side temporary support and right side, finally again by left side temporary support, right side
Temporary support is removed, that is, completes old bridge strengthening operation.
Wherein, in Yu Suoshu step c, the upper surface of each concrete arch block in the arch block linear array passes through glue respectively
Viscous mode is fixedly connected with the FRP cloth.
Wherein, in Yu Suoshu step c, each concrete arch block is fixedly connected with glue used with the FRP cloth gluing
For epoxy resin glue.
Wherein, in Yu Suoshu step c, each concrete arch block in the arch block linear array pass through respectively screw connection manner with
The FRP cloth is fixedly connected.
Wherein, left side is installed between the upper surface of the permanent support in the upper surface of the left side temporary support and the left side
Shear key is also installed with left side shear key between the right surface of the permanent support in the right surface of left side temporary support and left side；
Right side shear key is installed between the upper surface of the permanent support in upper surface and the right side of the right side temporary support, it is right
Also right side shear key is installed between the left surface of the permanent support in left surface and right side of side temporary support.
Wherein, the left side shear key includes U-shaped steel, and the front end of the U-shaped steel of left side shear key is fastened by bolts
In the left side temporary support, the rear end of the U-shaped steel of left side shear key is fastened by bolts in the permanent support in the left side；
The right side shear key also includes U-shaped steel, and the front end of the U-shaped steel of right side shear key is fastened by bolts in the right side
Side temporary support, the rear end of the U-shaped steel of right side shear key are fastened by bolts in the permanent support in the right side.
The invention has the benefit that a kind of reinforcement means of novel fabricated bricklaying donor of the present invention, packet
Included following steps: a, precast concrete arch block, concrete arch block are formed by concreting, the longitudinal cross-section of concrete arch block
Width value in isosceles-trapezium-shaped and concrete arch block upper end is big compared with the width value of lower end；B, by prefabricated coagulation
Native arch block is neat along tiling arranged in a straight line according to required length, and has gap between two adjacent concrete arch blocks, with
Form arch block linear array；For be placed in lifting position concrete arch block for, inside be embedded with metal threaded casing,
And the upper end of metal threaded casing exposes to the upper surface of corresponding concrete arch block, the inside of each metal threaded casing opens up respectively
There is upwardly opening internal thread hole；C, each coagulation in the upper surface of arch block linear array tiling FRP cloth, arch block linear array
The upper surface of native arch block is fixedly connected with FRP cloth respectively, to obtain flexible donor；D, one layer is poured in the upper surface of flexible donor
Mortar, to form mortar cover, which is located at the upper surface of the FRP cloth of flexible donor；E, in old bridge
Left side bridge pier right end side permanent support in pouring molding left side by way of concreting, it is left in the right side bridge pier of old bridge
The end side permanent support in pouring molding right side, left side bridge pier of the permanent support in left side and old bridge by way of concreting
It pours integrally, the right side bridge pier of the permanent support in right side and old bridge pours integrally；Wherein, the permanent support in left side is provided with
The permanent bearing surface in the left side in normal direction towards upper right side, the permanent support in right side are provided with normal direction towards upper left right side
Permanent bearing surface, and the permanent support in left side and the permanent support in right side or so face are arranged；F, in the front end side of the permanent support in left side
Temporary support on the left of fixed placement, the temporary support on the right side of the front end side fixed placement of the permanent support in right side, left side temporary support
It is arranged with right side temporary support or so face, the rear end face of left side temporary support and the front end face contact of the permanent support in left side and a left side
Left side shear key is installed between the permanent support of side temporary support and left side, the rear end face of right side temporary support is permanently propped up with right side
Right side shear key is installed between the front end face contact and the permanent support of right side temporary support and right side of seat；Left side temporary support is set
It is equipped with the left side temporary support face being aligned with before and after the permanent bearing surface in the left side of the permanent support in left side, right side temporary support is provided with
The right side temporary support face being aligned with before and after the permanent bearing surface in the right side of the permanent support in right side；G, before the installation of left side temporary support
The left side jack of horizontal balance afterwards, in the right side jack of right side temporary support installation anterior-posterior horizontal movement；H, flexible donor
Each metal threaded casing screw in lifting bolt respectively, and crossbeam is installed in the lifting of loop wheel machine driving end, crossbeam passes through hoisting rope
Cable is connect with each lifting bolt of flexible donor respectively；I, loop wheel machine lifts by crane and flexible donor is lifted, and in the process, flexibility supplies
Each concrete arch block in body is gradually bonded with adjacent concrete arch block side respectively under gravity, flexible after slinging
Donor just automatically forms the arch ring of domed shape；After flexible donor is sling completely and forms arch ring, by the left end of arch ring
It takes on the left side temporary support face for being put in left side temporary support and takes the right end of arch ring to be put on the right side of the temporary support of right side and face
When bearing surface on, the left part of arch ring is located at the rear end side of left side jack, after the right part of arch ring is located at right side jack
End side；J, after arch ring is taken and is put between left side temporary support and right side temporary support, each lifting bolt on arch ring is dismantled
Get off and stops lifting movement；K, jack, right side jack on the left of simultaneously operating, a left side for left side jack pushing tow arch ring backwards
End is simultaneously passed the left end of arch ring to the permanent bearing surface in left side of the permanent support in left side, right side jack pushing tow backwards
The right part of arch ring is simultaneously passed the right end of arch ring to the permanent bearing surface in right side of the permanent support in right side, and arch ring is in left side
Jack, right side jack synchronous effect under and designated position below the bridge floor that is elapsed backwards to old bridge, and arch ring
Upper end and old bridge bridge floor following table face contact；L, after first arch ring is installed in place, operation left side jack, right side
Jack simultaneously makes left side jack, right side jack be reset to reset condition；M, step h- step l is repeated to complete subsequent arch
Installation exercise is enclosed, until required arch ring is mounted below the bridge floor of old bridge；It n, after the installation is completed to all arch rings, will be left
Left side shear key between the permanent support of side temporary support and left side is removed and by right side temporary support and the permanent support in right side
Between right side shear key remove, finally again by left side temporary support, right side temporary support remove, that is, complete old bridge strengthening
Operation.Through the above steps, the reinforcement means of the novel fabricated bricklaying donor can effectively carry out old bridge structure
Processing, work progress is convenient and quick, durability is good, can efficiently reduce labor cost, time cost and can be effective
Ground extends the service life of old bridge structure.
Detailed description of the invention
The present invention is further detailed below with attached drawing, but the embodiment in attached drawing is not constituted to this hair
Bright any restrictions.
Fig. 1 is the structural schematic diagram of flexible donor of the invention.
Fig. 2 is construction schematic diagram of the invention.
Fig. 3 is the construction schematic diagram at another visual angle of the present invention.
Fig. 4 is the schematic diagram after old bridge strengthening.
Include in Fig. 1 to Fig. 4:
1 --- flexible donor 11 --- arch block linear array
111 --- concrete arch block 12 --- metal threaded casings
13 --- FRP cloth 14 --- mortar covers
21 --- the permanent support 211 in left side --- permanent bearing surfaces in left side
22 --- the permanent support 221 in right side --- permanent bearing surfaces in right side
31 --- left side temporary support 311 --- left side temporary support faces
32 --- right side temporary support 321 --- right side temporary support faces
41 --- left side shear key 42 --- right side shear keies
43 --- U-shaped steel 51 --- left side jack
52 --- right side jack 61 --- lifting bolts
62 --- crossbeams 63 --- lift cable
7 --- arch ring 8 --- old bridges.
Specific embodiment
Below with reference to specific embodiment, the present invention will be described.
As shown in Figures 1 to 4, a kind of reinforcement means of novel fabricated bricklaying donor comprising have following steps, specifically
:
A, precast concrete arch block 111, concrete arch block 111 are formed by concreting, the longitudinal cross-section of concrete arch block 111
Width value in isosceles-trapezium-shaped and 111 upper end of concrete arch block is big compared with the width value of lower end；
B, prefabricated concrete arch block 111 is mixed along neat and adjacent two arranged in a straight line of tiling according to required length
There is gap between solidifying soil arch block 111, to form arch block linear array 11；For being placed in the concrete arch block of lifting position
For 111, inside be embedded with metal threaded casing 12, and the upper end of metal threaded casing 12 exposes to corresponding concrete arch block
The inside of 111 upper surface, each metal threaded casing 12 offers upwardly opening internal thread hole respectively；
C, it tiles FRP cloth 13 in the upper surface of arch block linear array 11, each concrete arch block 111 in arch block linear array 11
Upper surface is fixedly connected with FRP cloth 13 respectively, to obtain flexible donor 1；
D, one layer of mortar is poured in the upper surface of flexible donor 1, to form mortar cover 14, which is located at soft
The upper surface of the FRP cloth 13 of property donor 1；
E, in the left side bridge pier right end side of old bridge 8 by way of concreting permanent support 21 on the left of pouring molding,
In old bridge 8 right side bridge pier left end side by way of concreting permanent support 22 on the right side of pouring molding, left side is forever
The left side bridge pier of long support 21 and old bridge 8 pours integrally, and the permanent support 22 in right side and the right side bridge pier of old bridge 8 pour
Build up one；Wherein, the permanent bearing surface 211 in left side that the permanent support 21 in left side is provided with normal direction towards upper right side, right side
Permanent support 22 is provided with normal direction towards the permanent bearing surface 221 in upper left right side, and the permanent support 21 in left side and right side
Permanent 22 or so face of support arrangement；
F, the temporary support 31 on the left of the front end side fixed placement of the permanent support 21 in left side, in the front end side of the permanent support 22 in right side
Temporary support 32 on the right side of fixed placement, left side temporary support 31 and 32 or so face of right side temporary support arrange that left side is temporarily propped up
Between the front end face contact and the permanent support 21 of left side temporary support 31 and left side of the permanent support 21 of rear end face and left side of seat 31
It is installed with left side shear key 41, the rear end face of right side temporary support 32 is with the front end face contact of the permanent support 22 in right side and right side is faced
When support 32 and the permanent support 22 in right side between be installed with right side shear key 42；Left side temporary support 31 is provided with permanent with left side
The left side temporary support face 311 being aligned before and after the permanent bearing surface 211 in the left side of support 21, right side temporary support 32 are provided with and the right side
The right side temporary support face 321 being aligned before and after the permanent bearing surface 221 in right side of the permanent support 22 in side；
G, the left side jack 51 that anterior-posterior horizontal movement is installed in left side temporary support 31 installs front and back in right side temporary support 32
The right side jack 52 of horizontal balance；
H, each metal threaded casing 12 of flexible donor 1 screws in lifting bolt 61 respectively, and installs in the lifting of loop wheel machine driving end
Crossbeam 62, crossbeam 62 are connect with each lifting bolt 61 of flexible donor 1 respectively by lifting cable 63；
I, loop wheel machine lifts by crane and flexible donor 1 is lifted, and in the process, each concrete arch block 111 in flexible donor 1 is in gravity
Under the action of be gradually bonded with 111 side of adjacent concrete arch block respectively, flexible donor 1 just automatically forms domed after slinging
The arch ring 7 of shape；After flexible donor 1 is sling completely and forms arch ring 7, the left end of arch ring 7 is taken and is put in the interim branch in left side
The right side temporary support face for being put in right side temporary support 32 is taken on the left side temporary support face 311 of seat 31 and by the right end of arch ring 7
On 321, the left part of arch ring 7 is located at the rear end side of left side jack 51, after the right part of arch ring 7 is located at right side jack 52
End side；
J, after arch ring 7 is taken and is put between left side temporary support 31 and right side temporary support 32, by each lifting bolt on arch ring 7
61 disassemble and stop lifting movement；
K, jack 51, right side jack 52 on the left of simultaneously operating, left side jack 51 left part of pushing tow arch ring 7 and make backwards
The left end of arch ring 7 is passed to the permanent bearing surface 211 in left side of the permanent support 21 in left side, the pushing tow backwards of right side jack 52
The right part of arch ring 7 is simultaneously passed the right end of arch ring 7 to the permanent bearing surface 221 in right side of the permanent support 22 in right side, arch
Circle 7 left side jack 51, right side jack 52 synchronous effect under and refer to below the bridge floor that is elapsed backwards to old bridge 8
Positioning is set, and the bridge floor following table face contact of the upper end of arch ring 7 and old bridge 8；
L, after first arch ring 7 is installed in place, operation left side jack 51, right side jack 52 simultaneously make left side jack
51, right side jack 52 is reset to reset condition；
M, step h- step l is repeated to complete subsequent 7 installation exercise of arch ring, until required arch ring 7 is mounted on old bridge 8
Below bridge floor；
N, after the installation is completed to all arch rings 7, by the left side shear key between the permanent support 21 of left side temporary support 31 and left side
41 remove and remove the right side shear key 42 between the permanent support 22 of right side temporary support 32 and right side, finally again by left side
Temporary support 31, right side temporary support 32 are removed, that is, complete old 8 reinforcement operation of bridge.
It need to explain yes, in step c, the upper surface of each concrete arch block 111 in arch block linear array 11 is distinguished
It is fixedly connected by adhesive means with FRP cloth 13；Preferably, in step c, each concrete arch block 111 and 13 gluing of FRP cloth are solid
Fixed connection glue used is epoxy resin glue.Certainly, other than using above-mentioned glue adhering fixed mode, the present invention may be used also
It is specific: each concrete arch in step c, in arch block linear array 11 to be achieved a fixed connection using the fastening means that is spirally connected
Block 111 is fixedly connected by screw connection manner with FRP cloth 13 respectively.
It is noted that for the left side shear key 41 being installed between left side temporary support 31 and the permanent support 21 in left side
For, its role is to: prevent arch ring 7 jack 51, the interim branch in left side in 52 transmit process of right side jack on the left of the use
With the permanent support 21 in left side the changing of the relative positions occurs for seat 31.Likewise, for being installed on right side temporary support 32 and the permanent support 22 in right side
Between right side shear key 42 for, its role is to: prevent arch ring 7 on the left of use jack 51, right side jack 52 pass
The changing of the relative positions occurs for the permanent support 22 of right side temporary support 32 and right side during sending.There are also be exactly the upper table of left side temporary support 31
Left side shear key 41, the right surface of left side temporary support 31 and left side are installed between the upper surface of the permanent support 21 in face and left side
Also left side shear key 41 is installed between the right surface of permanent support 21；Likewise, the upper surface of right side temporary support 32 and the right side
Right side shear key 42 is installed between the upper surface of the permanent support 22 in side, the left surface of right side temporary support 32 is permanently propped up with right side
Also right side shear key 42 is installed between the left surface of seat 22.For left side shear key 41 of the invention, right side shear key 42 and
Speech can be designed using following structures, specific: left side shear key 41 includes U-shaped steel 43, left side shear key 41 it is U-shaped
The front end of steel 43 is fastened by bolts in left side temporary support 31, and the rear end of the U-shaped steel 43 of left side shear key 41 passes through spiral shell
Bolt is anchored on the permanent support 21 in left side；Right side shear key 42 also includes U-shaped steel 43, before the U-shaped steel 43 of right side shear key 42
End is fastened by bolts in right side temporary support 32, the rear end of the U-shaped steel 43 of right side shear key 42 be fastened by bolts in
The permanent support 22 in right side.
It designing through the above steps, the reinforcement means of the novel fabricated bricklaying donor has the following effects that, specific:
1, the reinforcement means of the novel fabricated bricklaying donor is based on FRP and flexible donor, that is, have good durability and
Corrosion resistance, and can effectively extend the service life of old bridge 8；
2, the reinforcement means of the novel fabricated bricklaying donor is easy for construction, short time limit, and can efficiently reduce labour
Cost and time cost；
3, the prefabricated convenience of reinforcement means of the novel fabricated bricklaying donor, and span and height that can be required according to scene
Prefabricated specific concrete arch block 111, to be assembled into required 7 size of reinforcing arch ring；
4, FRP cloth 13 used by the reinforcement means of the novel fabricated bricklaying donor has the characteristics that high-strength light, can be with
The stability of arch ring 7 is increased substantially, to effectively be reinforced to old beam bridge structure；
5, the slide rail of left side temporary support 31, right side temporary support 32 as arch ring 7 is used in reinforcing process, arch ring 7 is complete
Recycling is removed after portion's positioning, reduces and reinforces economic cost, improves and reinforces efficiency；
6, entire reinforcing process does not use reinforcing bar, and the service performance of ruggedized construction is influenced there is no the corrosion because of rigid muscle.
The above is only a preferred embodiment of the present invention, for those of ordinary skill in the art, according to the present invention
Thought, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as to the present invention
Limitation.
Claims (6)
1. a kind of reinforcement means of novel fabricated bricklaying donor, which is characterized in that it include following steps, specific:
A, precast concrete arch block (111), concrete arch block (111) are formed by concreting, and concrete arch block (111) is indulged
It is big compared with the width value of lower end in the width value of isosceles-trapezium-shaped and concrete arch block (111) upper end to section；
B, prefabricated concrete arch block (111) is neat along tiling arranged in a straight line according to required length, and adjacent two
There is gap, to form arch block linear array (11) between concrete arch block (111)；For being placed in the concrete of lifting position
For arch block (111), inside be embedded with metal threaded casing (12), and the upper end of metal threaded casing (12) exposes to accordingly
The inside of the upper surface of concrete arch block (111), each metal threaded casing (12) offers upwardly opening internal thread hole respectively；
C, it tiles FRP cloth (13) in the upper surface of arch block linear array (11), each concrete arch in arch block linear array (11)
The upper surface of block (111) is fixedly connected with FRP cloth (13) respectively, to obtain flexible donor (1)；
D, one layer of mortar is poured in the upper surface of flexible donor (1), to form mortar cover (14), the mortar cover (14)
Positioned at the upper surface of the FRP cloth (13) of flexible donor (1)；
E, in the left side bridge pier right end side of old bridge (8) by way of concreting permanent support on the left of pouring molding
(21), in the right side bridge pier left end side of old bridge (8) by way of concreting permanent support on the right side of pouring molding
(22), the left side bridge pier of the permanent support in left side (21) and old bridge (8) pours integrally, the permanent support in right side (22) with it is old
The right side bridge pier of bridge (8) pours integrally；Wherein, the permanent support in left side (21) is provided with a left side of the normal direction towards upper right side
The permanent bearing surface in side (211), the permanent support in right side (22) are provided with normal direction towards the permanent bearing surface in upper left right side
(221), and the permanent support in left side (21) and the permanent support in right side (22) left and right face are arranged；
F, the temporary support (31) on the left of the front end side fixed placement of the permanent support in left side (21), in the permanent support in right side (22)
Temporary support (32), left side temporary support (31) and right side temporary support (32) left and right face cloth on the right side of the fixed placement of front end side
Set, the rear end face of left side temporary support (31) and the front end face contact of the permanent support in left side (21) and left side temporary support (31) with
Left side shear key (41) is installed between the permanent support in left side (21), the rear end face of right side temporary support (32) is permanently propped up with right side
Right side shear key is installed between the front end face contact and the permanent support of right side temporary support (32) and right side (22) of seat (22)
(42)；What left side temporary support (31) was aligned before and after being provided with the permanent bearing surface in left side (211) of the permanent support in left side (21)
Left side temporary support face (311), right side temporary support (32) are provided with the permanent bearing surface in right side with the permanent support in right side (22)
(221) the right side temporary support face (321) that front and back is aligned；
G, in the left side jack (51) of left side temporary support (31) installation anterior-posterior horizontal movement, pacify in right side temporary support (32)
Fill the right side jack (52) of anterior-posterior horizontal movement；
H, each metal threaded casing (12) of flexible donor (1) screws in lifting bolt (61) respectively, and drives in the lifting of loop wheel machine
End installation crossbeam (62), crossbeam (62) are connect with each lifting bolt (61) of flexible donor (1) respectively by lifting cable (63)；
I, loop wheel machine lifts by crane and flexible donor (1) is lifted, in the process, each concrete arch block (111) in flexible donor (1)
It is gradually bonded with adjacent concrete arch block (111) side respectively under gravity, flexible donor (1) is just automatic after slinging
Form the arch ring (7) of domed shape；After flexible donor (1) is sling completely and forms arch ring (7), by a left side for arch ring (7)
It takes on the left side temporary support face (311) for being put in left side temporary support (31) and takes the right end of arch ring (7) and be put in right side and face in end
When support (32) right side temporary support face (321) on, the left part of arch ring (7) is located at the rear end side of left side jack (51),
The right part of arch ring (7) is located at the rear end side of right side jack (52)；
It j, will be each on arch ring (7) after arch ring (7) is taken and is put between left side temporary support (31) and right side temporary support (32)
Lifting bolt (61) disassembles and stops lifting movement；
K, jack (51), right side jack (52) on the left of simultaneously operating, a left side for left side jack (51) pushing tow arch ring (7) backwards
End is simultaneously passed the left end of arch ring (7) to the permanent bearing surface in left side (211) of the permanent support in left side (21), right side thousand
Jin top (52) right part of pushing tow arch ring (7) and is passed the right end of arch ring (7) to the permanent support in right side (22) backwards
On the permanent bearing surface in right side (221), arch ring (7) left side jack (51), right side jack (52) synchronous effect under and by
It is elapsed backwards to designated position below the bridge floor of old bridge (8), and under the bridge floor of the upper end of arch ring (7) and old bridge (8)
Surface contact；
L, after first arch ring (7) is installed in place, operation left side jack (51), right side jack (52) simultaneously make left side thousand
Jin top (51), right side jack (52) are reset to reset condition；
M, step h- step l is repeated to complete subsequent arch ring (7) installation exercise, until required arch ring (7) are mounted on old bridge
Below the bridge floor of beam (8)；
N, after the installation is completed to all arch rings (7), by the left side between the permanent support of left side temporary support (31) and left side (21)
Shear key (41) is removed and tears the right side shear key (42) between the permanent support of right side temporary support (32) and right side (22) open
It removes, finally left side temporary support (31), right side temporary support (32) is removed again, that is, complete old bridge (8) reinforcement operation.
2. a kind of reinforcement means of novel fabricated bricklaying donor according to claim 1, it is characterised in that: in the step
In rapid c, the upper surface of each concrete arch block (111) in the arch block linear array (11) pass through respectively adhesive means with it is described
FRP cloth (13) is fixedly connected.
3. a kind of reinforcement means of novel fabricated bricklaying donor according to claim 2, it is characterised in that: in the step
In rapid c, it is epoxide-resin glue that each concrete arch block (111), which is fixedly connected with glue used with the FRP cloth (13) gluing,
Water.
4. a kind of reinforcement means of novel fabricated bricklaying donor according to claim 1, it is characterised in that: in the step
In rapid c, each concrete arch block (111) in the arch block linear array (11) passes through screw connection manner and the FRP cloth respectively
(13) it is fixedly connected.
5. a kind of reinforcement means of novel fabricated bricklaying donor according to claim 1, it is characterised in that: the left side
Left side shear key (41) is installed between the upper surface of the permanent support in upper surface and the left side (21) of temporary support (31), it is left
Also left side shear key (41) is installed between the right surface of the permanent support in right surface and left side (21) of side temporary support (31)；
Right side is installed between the upper surface of the permanent support in upper surface and the right side (22) of the right side temporary support (32)
Shear key (42) is also installed with right side between the left surface of the permanent support in left surface and right side (22) of right side temporary support (32)
Shear key (42).
6. a kind of reinforcement means of novel fabricated bricklaying donor according to claim 5, it is characterised in that: the left side
Shear key (41) includes U-shaped steel (43), and the front end of the U-shaped steel (43) of left side shear key (41) is fastened by bolts in described
Left side temporary support (31), the rear end of the U-shaped steel (43) of left side shear key (41) are fastened by bolts permanent in the left side
Support (21)；
The right side shear key (42) also includes U-shaped steel (43), and the front end of the U-shaped steel (43) of right side shear key (42) passes through
Bolt fastening is fastened by bolts in the right side temporary support (32), the rear end of the U-shaped steel (43) of right side shear key (42)
In the permanent support in the right side (22).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111218893A (en) * | 2020-01-20 | 2020-06-02 | 浙江大学城市学院 | Construction method for reinforcing existing line-crossing bridge by newly-added pier column bearing steel truss girder |
| CN112064523A (en) * | 2020-09-29 | 2020-12-11 | 保利长大工程有限公司 | Reinforcing method for additionally arranging beam slab structure on old stone arch bridge |
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| CN101793010A (en) * | 2010-03-16 | 2010-08-04 | 中交二航局第二工程有限公司 | Arch-included integral pushing method for large-tonnage multi-span combined arch bridge |
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| CN111218893B (en) * | 2020-01-20 | 2021-04-20 | 浙江大学城市学院 | Construction method for reinforcing existing line-crossing bridge by newly-added pier column bearing steel truss girder |
| CN112064523A (en) * | 2020-09-29 | 2020-12-11 | 保利长大工程有限公司 | Reinforcing method for additionally arranging beam slab structure on old stone arch bridge |
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| CN110055905B (en) | 2023-12-05 |
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