CN109594484A - Bridge strengthening device, ruggedized construction, reinforced construction method and reinforcement and repair method - Google Patents
Bridge strengthening device, ruggedized construction, reinforced construction method and reinforcement and repair method Download PDFInfo
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- CN109594484A CN109594484A CN201710922449.7A CN201710922449A CN109594484A CN 109594484 A CN109594484 A CN 109594484A CN 201710922449 A CN201710922449 A CN 201710922449A CN 109594484 A CN109594484 A CN 109594484A
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- sides
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- web portion
- hinge seam
- rim
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to a kind of bridge strengthening devices, ruggedized construction, reinforced construction method and reinforcement and repair method, bridge strengthening structure includes adjacent two rim bridges to form the hinge seam that front and back extends in left and right, it further include the strenthening member that the section that extends along the longitudinal direction is in inverted T-type structure, strenthening member includes the web portion in the corresponding insertion hinge seam extended along the longitudinal direction, web portion lower end two sides are equipped with the corresponding two sides bottom wing edge for being fitted in two rim bridge bottom surfaces, grouting material is filled at left and right sides of web portion in hinge seam, the upper end two sides for extending hinge seam of web portion are equipped with the corresponding two sides upper limb edge for being fitted in corresponding grouting material and two rim bridge top surfaces, bridge deck pavement is equipped with above two sides upper limb edge and rim bridge.Compared with prior art, the two sides bottom wing edge of the strenthening member lower end of inverted T-type structure can participate in structure stress with girder common combination, improve ultimate load capacity of cross section.
Description
Technical field
The present invention relates to a kind of bridge strengthening device, ruggedized construction, reinforced construction method and reinforcement and repair methods.
Background technique
Blank board bridge is one of small across footpath Reinforced Concrete Bridge and the most common structure of Prestressed Concrete Bridges,
In main stressed member be pre-cast hollow slab.When construction, multiple hollow slab girders are arranged side by side to form bridge floor, and in multiple skies
Filler is set so that multiple hollow slab girders are fixed together, when load-bearing, multiple hollow slab girders are together at the hinge seam between core beam
Load-bearing is to reduce the load that single hollow slab girder is subject to.But due to the influence of the factors such as construction, aging, nature or vehicle overload,
The filler that seam is cut with scissors between multiple hollow slab girders, which is often destroyed, to fall off, and directly results in single hollow slab girder and directly bears structure lotus
It carries, largely reduced the load-bearing capacity of hollow slab girder." single slab bearing " is the common serious plant disease of blank board bridge, and less serious case causes
Paving destroys, and severe one leads to hollow slab girder fracture accident.
Application publication number is that the patent of invention of CN103898841A discloses a kind of blank board bridge reinforcement means, including under
State step: a, cleaning bridge mat formation and cut with scissors seam；B, steel plate is inserted into hinge seam, and the horizontal direction at the top of steel plate two will be fixed in
The steel member that side extends and the reinforcing bar being implanted in hinge seam two sides bridge hollow board or the exposed junction Joint of screw rod；C, will extend
The plate exposure end for cutting with scissors seam lower end to bridge hollow board is carried out with the junction steel plate for being fixed in hinge seam two sides bridge hollow board bottom surface
It is affixed；D, particulate grouting material or other grouting materials are pressed or inserted into the gap between hinge seam and steel plate；E, restore bridge floor paving
Dress and pavement structure complete structural strengthening.The blank board bridge reinforcement means by two adjacent hollow slab girders by steel plate and
Grouting material is fixed together, and strengthens the connection of two adjacent hollow slab girders, the case where so as to avoid " single slab bearing ".
Since the junction steel plate of lower end during rim bridge load-bearing is primarily subjected to pulling force, but above-mentioned reinforcement means is using connection
Steel plate is affixed to the progress of steel plate lower end, and junction steel plate is two components being bolted, and bears bolt and connection steel when pulling force
Plate bending place under tension is larger, and working long hours may deform and cause to bear ability decline even failure；On and
Blank board bridge reinforcement means is stated using a monolith steel plate, which is divided into two parts, steel plate abdomen list for grouting material
Adhesion is carried out by grouting material and steel plate, it is difficult to guarantee the mutually connected connected intensity of adjacent hollow plate-girder.
Summary of the invention
The purpose of the present invention is to provide a kind of blank board bridge ruggedized constructions, to solve to use two companies in the prior art
It connects the connected steel plate lower end of steel plate and bears the technical issues of pulling force is easy to happen failure；The present invention is provided used in one kind structure
Bracing means；The present invention also provides a kind of bridge strengthening construction methods and a kind of bridge strengthening restorative procedure.
To achieve the above object, bridge strengthening structure provided by the invention is using technical solution 1: bridge strengthening structure includes
It is in inverted T-type structure that two rim bridges of the adjacent hinge seam extended with formation front and back in left and right, which further include the section extended along the longitudinal direction,
Strenthening member, strenthening member includes the web portion in the corresponding insertion hinge seam extended along the longitudinal direction, web portion lower end
Two sides are equipped with the corresponding two sides bottom wing edge for being fitted in two rim bridge bottom surfaces, are filled at left and right sides of the web portion in hinge seam
Grouting material, the upper end two sides for extending the hinge seam of the web portion are equipped with correspondence and are fitted in corresponding grouting material and Liang Qiao
Bridge deck pavement is equipped with above the two sides upper limb edge of beam portion top surface, two sides upper limb edge and rim bridge.
The beneficial effects of the present invention are: the grouting material reinforcing at left and right sides of strenthening member is connected to two adjacent rim bridges and makes
The case where the two consolidation is integral, avoids " single slab bearing " occurs；Wherein, inverted T-type structure strenthening member insertion hinge seam after with
The prior art compares the injection for being convenient for grouting material with bigger grouting mouth；The two sides of the strenthening member lower end of inverted T-type structure
Pulling force is born in bottom wing edge, and substantially increases the ultimate bearing capacity of ruggedized construction at composite structure with hollow panel；On two sides
The bridge deck pavement being laid with above the portion of the edge of a wing cooperates that improve bridge floor integrated with rim bridge with two sides upper limb edge, further
The case where avoiding " single slab bearing " occurs.
It is improved to obtain technical solution 2 on the basis of technical solution 1 of bridge strengthening structure: the web portion lower end
Equipped with the bottom plate extended along the longitudinal direction, the both sides which is located at left and right sides of web portion form the two sides lower flange
Portion.Two sides bottom wing edge is two positions on one piece of bottom plate, does not have bending part on one piece of bottom plate, not when bearing pulling force
Can deform failure.
It is improved to obtain technical solution 3 on the basis of technical solution 1 of bridge strengthening structure: the two sides lower flange
The width of portion in the lateral direction is greater than the width of two sides upper limb edge in the lateral direction.It mainly holds two sides upper limb edge
By pressure, and two sides bottom wing edge is primarily subjected to pulling force, using the not measuring body characteristic of plate tension by two sides upper limb edge width
It reduces and increases two sides bottom wing edge width, so that two edges of a wing portion is in best stress, increase bridge strengthening knot
The reliability of structure.
It is improved to obtain technical solution 4 on the basis of technical solution 1 of bridge strengthening structure: the two sides lower flange
Portion is connect with the bottom surface gluing of the rim bridge.Gluing connection carries out the preliminary fixation of strenthening member, facilitates the reality of subsequent step
It applies.
It is improved to obtain technical solution 5 on the basis of the technical solution 1 or 2 of bridge strengthening structure or 3 or 4: described
It is equipped with multiple lower ends in bridge deck pavement and is connected in the vertical reinforcer on the upper surface of two sides upper limb edge.Vertical reinforcer
It is connected with bridge deck pavement, improves the integrated degree of bridge floor and rim bridge, the concentrfated load that dispersion wheel provides.
It is improved to obtain technical solution 6 on the basis of the technical solution 1 or 2 of bridge strengthening structure or 3 or 4: described
Bridge deck pavement includes the in-situ layer being laid on two sides upper limb edge and on rim bridge.
It is improved to obtain technical solution 7 on the basis of technical solution 6 of bridge strengthening structure: be set in the in-situ layer
There are multiple lower ends to be connected in the vertical reinforcer on the upper surface of two sides upper limb edge.
It is improved to obtain technical solution 8 on the basis of technical solution 6 of bridge strengthening structure: the bridge deck pavement
It further include the waterproof layer being laid on the in-situ layer and bitumen concrete bridge floor layer.According to different bridge floor demands, waterproof layer or drip are set
Cyan layer or concrete bridge floor layer.
It is improved to obtain technical solution 9 on the basis of the technical solution 1 or 2 of bridge strengthening structure or 3 or 4: described
Web portion is equipped with the multiple through-holes being spaced apart along the longitudinal direction.The setting of through-hole can make the grouting material of web portion two sides can
The case where being mutually consolidated, further increasing the globality of ruggedized construction, avoid " single slab bearing ".
It is improved to obtain technical solution 10 on the basis of the technical solution 1 or 2 of bridge strengthening structure or 3 or 4: described
The upper end two sides for extending the hinge seam of web portion are installed with the L-type component extended along the longitudinal direction respectively, and L-type component includes
The vertical edge for forming the horizontal edge of two sides upper limb edge and being connected with the web portion upper end.Made after grouting using L-type component
Strenthening member is fixed on two rim bridges, conducive to the solidification of grouting material.
It is improved to obtain 11: two L-type component of technical solution on the basis of technical solution 10 of bridge strengthening structure
The upper end of vertical edge and web portion is equipped with the bolt mounting holes of corresponding perforation, and the bolt mounting holes are intervally distributed with along the longitudinal direction
Multiple, two L-type components and web portion are by together with the fastening bolt fixing assembling that is installed in the bolt mounting holes, two L
The vertical edge of type component and/or the bolt mounting holes on web portion are the slotted eye that long axis vertically extends.Slotted eye makes two
With certain adjustable space when side upper limb edge and web portion are connected, two sides upper limb edge is made preferably to press adjacent beam bridge
Two top surfaces, and then preferably it is connected in ruggedized construction on adjacent two rim bridge, disperse the concentrated stress from wheel.
The technical solution 1 that the present invention provides a kind of bridge strengthening construction method includes the following steps:
(1) section extended along the longitudinal direction adjacent two rim bridge in left and right is fixed in inverted T shaped strenthening member to be formed by
It cuts with scissors at seam, strenthening member includes the web portion in the insertion hinge seam extended along the longitudinal direction, and web portion lower end two sides are equipped with
The corresponding two sides bottom wing edge for being fitted in two rim bridge bottom surfaces；
(2) to the grouting of hinge seam to close corresponding hinge seam；
(3) it is correspondingly provided with to correspond in the upper end two sides that web portion extends upward hinge seam and is fitted in the grouting and corresponding rim bridge
The two sides upper limb edge of top surface；
(4) bridge deck pavement is laid on two sides upper limb edge and rim bridge.
Inverted T shaped strenthening member is fixed in hinge seam by above-mentioned construction method, has bigger filling compared with prior art
Mouth is starched, convenient for injecting grouting material into hinge seam；Being fitted on grouting material by two sides upper limb edge again makes adjacent two bridge
The case where portion is consolidated, and avoids " single slab bearing ".
It is improved to obtain technical solution 2 on the basis of technical solution 1 of bridge strengthening construction method:, will in step 1
Section first makes two sides bottom wing edge and corresponding rim bridge in the insertion of the inverted T shaped strenthening member from bottom to top hinge seam
Gluing connection in bottom surface recycles fixed device to lift strenthening member upwards strenthening member to be fixed at the hinge seam.Pass through
Gluing and the tentatively fixed strenthening member of fixed device, prevent the strenthening member when carrying out subsequent grouting from moving, avoid because adding
Gu component occurs mobile and generates the intensity that gap weakens ruggedized construction.
It is improved to obtain technical solution 3: step 3 on the basis of the technical solution 1 of bridge strengthening construction method or 2
In, behind fixation two sides upper limb edge, multiple vertical reinforcers are fixedly connected in two sides upper limb edge upper surface.It is perpendicular
It is connected to reinforcer and bridge deck pavement, improves the integrated degree of bridge floor and rim bridge, the concentrfated load that dispersion wheel provides.
It is improved to obtain technical solution 4 on the basis of technical solution 3 of bridge strengthening construction method: in step 4
Bridge deck pavement includes the in-situ layer being laid on two sides upper limb edge and on side rim bridge, the vertical reinforcer position
In the in-situ layer, bridge deck pavement further includes the waterproof layer being laid on the in-situ layer and bitumen concrete bridge floor layer.According to
Different bridge floor demand setting waterproof layers or bitumen layer or concrete bridge floor layer.
It is improved to obtain technical solution 5: step 2 on the basis of the technical solution 1 of bridge strengthening construction method or 2
In, stop when extremely concordant with rim bridge upper surface to hinge seam grouting, grouting upper surface is carried out to smooth out maintenance processing.
The technical solution 1 that the present invention provides a kind of bridge strengthening restorative procedure includes the following steps:
(1) the hinge seam between impaired adjacent two rim bridge is cleared up；
(2) at by the section extended along the longitudinal direction in the hinge seam after the fixed cleaning of inverted T shaped strenthening member, strenthening member includes
Web portion in the insertion extended along the longitudinal direction the hinge seam, web portion lower end two sides are equipped with correspondence and are fitted in two rim bridge bottoms
The two sides bottom wing edge in face；
(3) to the grouting of hinge seam to close corresponding hinge seam；
(4) it is correspondingly provided with to correspond in the upper end two sides that web portion extends upward hinge seam and is fitted in the grouting and corresponding rim bridge
The two sides upper limb edge of top surface；
(5) bridge deck pavement is laid on two sides upper limb edge and rim bridge.
Above-mentioned bridge strengthening restorative procedure first clears up hinge seam, is easily installed inverted T shaped strenthening member；It will be inverted T shaped
Strenthening member be fixed on hinge seam in, compared with prior art have bigger grouting mouth, convenient for hinge seam in inject injection material
Material；Being fitted on grouting material by two sides upper limb edge again makes adjacent two rim bridge be consolidated, and avoids " single slab bearing "
The case where.
It is improved to obtain technical solution 2 on the basis of technical solution 1 of bridge strengthening restorative procedure:, will in step 1
Section first makes two sides bottom wing edge and corresponding rim bridge in the insertion of the inverted T shaped strenthening member from bottom to top hinge seam
Gluing connection in bottom surface recycles fixed device to lift strenthening member upwards strenthening member to be fixed at the hinge seam.
It is improved to obtain technical solution 3: step 4 on the basis of the technical solution 1 of bridge strengthening restorative procedure or 2
In, behind fixation two sides upper limb edge, multiple vertical reinforcers are fixedly connected in two sides upper limb edge upper surface.
It is improved to obtain technical solution 4 on the basis of technical solution 3 of bridge strengthening restorative procedure: in step 5
Bridge deck pavement includes the in-situ layer being laid on the both wings edge and on side rim bridge, and the vertical reinforcer is located at institute
It states in in-situ layer, bridge deck pavement further includes the waterproof layer being laid on the in-situ layer and bitumen concrete bridge floor layer.
It is improved to obtain technical solution 5: step 3 on the basis of the technical solution 1 of bridge strengthening restorative procedure or 2
In, stop when extremely concordant with rim bridge upper surface to hinge seam grouting, grouting upper surface is carried out to smooth out maintenance processing.
The present invention provides a kind of technical solution 1 of bridge strengthening device: bridge strengthening device includes extending along the longitudinal direction
Section be in inverted T-type structure strenthening member, strenthening member includes extending along the longitudinal direction for being inserted into corresponding two rim bridge
The web portion in the hinge seam extended along the longitudinal direction is formed, web portion lower end two sides, which are equipped with, is fitted in corresponding two bridge for correspondence
The two sides bottom wing edge of beam portion bottom surface, bracing means further include the upper end for extending the hinge seam for being connected in web portion
Two sides upper limb edge, under two sides top flange portion is respectively provided on the grouting for being fitted in corresponding hinge seam and corresponding rim bridge
Side.The two sides upper limb edge of inverted T shaped strenthening member and two sides bottom wing edge correspondence press against on corresponding two rim bridge, side
Two rim bridges are carried out preliminary connected, two rim bridges are consolidated by the grouting material in web portion two sides later
Even, compared with the existing technology, since the grouting mouth for cutting with scissors the side of sewing on after inverted T shaped strenthening member insertion hinge seam is bigger, therefore injection material
Material, which can be poured into more uniformly in hinge seam, plays preferably connected effect.
It is improved to obtain technical solution 2 on the basis of technical solution 1 of bridge strengthening device: the web portion lower end
Equipped with the bottom plate extended along the longitudinal direction, the side of the bottom plate being located at left and right sides of web portion forms the two sides lower flange
Portion.Two sides bottom wing edge is two positions on one piece of bottom plate, does not have bending part on one piece of bottom plate, not when bearing pulling force
Can deform failure.
It is improved to obtain technical solution 3 on the basis of the technical solution 1 of bridge strengthening device or 2: the web portion
It is equipped with the multiple through-holes being spaced apart along the longitudinal direction.The setting of through-hole can make the grouting material of web portion two sides can be by logical
The case where hole is mutually fixed together, and further increases the globality of ruggedized construction, avoids " single slab bearing ".
It is improved to obtain technical solution 4: bridge strengthening dress on the basis of the technical solution 1 of bridge strengthening device or 2
It sets including the L-type component for being installed in web portion upper end two sides, L-type component includes forming two sides upper limb edge
Horizontal edge and for the web portion upper end be connected vertical edge.
It is improved to obtain the perpendicular of 5: two L-type component of technical solution on the basis of technical solution 4 of bridge strengthening device
Side and the upper end of web portion are respectively equipped with the bolt mounting holes of corresponding perforation, and the bolt mounting holes are spaced apart along the longitudinal direction
There is the slotted eye multiple, the vertical edge of two L-type components and/or the bolt mounting holes on web portion vertically extend for long axis.It is ellipse
Round hole makes two sides upper limb edge and web portion, with certain adjustable space, push up two sides upper limb edge preferably when being connected
Two top surfaces of adjacent beam bridge are pressed, and then are preferably connected in ruggedized construction on adjacent two rim bridge, disperse the collection from wheel
Middle stress.
Detailed description of the invention
Fig. 1 provides the structural schematic diagram of bridge strengthening device main view direction for the present invention；
Fig. 2 is the three-dimensional partial structural diagram of bridge strengthening device shown in Fig. 1；
Fig. 3 is the main view direction structural schematic diagram of strenthening member inverted T shaped in bridge strengthening device shown in Fig. 1；
Fig. 4 is the side-looking direction structural schematic diagram of strenthening member inverted T shaped in bridge strengthening device shown in Fig. 1；
Fig. 5 is the three-dimensional partial structural diagram of two sides upper limb edge in bridge strengthening device shown in Fig. 1；
Fig. 6 provides the structural schematic diagram of bridge strengthening structure for the present invention；
Fig. 7 is using bridge strengthening structure shown in Fig. 6 to the structural schematic diagram of blank board bridge integral reinforcing；
In attached drawing: 11- web portion, the two sides 12- bottom wing edge, 13- slotted eye, 14- hexagonal honeycomb hole, the two sides 21- upper limb
Edge, the vertical reinforcer of 22-, 23- bolt mounting holes, 24- fastening bolt, 3- rim bridge, 4- grouting material, 5- in-situ layer, 6-
Waterproof layer and bitumen concrete bridge floor layer.
Specific embodiment
The embodiment for providing bridge strengthening structure to the present invention with reference to the accompanying drawing is described further.
The embodiment 1 of present invention offer bridge strengthening structure:
As shown in Figure 6 and Figure 7, bridge strengthening structure includes adjacent two bridges to form the hinge seam extended along the longitudinal direction in left and right
Portion 3, rim bridge 3 are specially two adjacent two hollow slab girders in blank board bridge, further include extending to cut along the longitudinal direction
Face is in the strenthening member of inverted T-type structure, and strenthening member includes the web portion 11 for extending along the longitudinal direction and being inserted into hinge seam, web
11 lower end of portion has bottom plate, and the both sides for being located at 11 left and right sides of web portion of the bottom plate form corresponding press two rim bridges, 3 bottom
The two sides bottom wing edge 12 in face, two sides bottom wing edge 12 are connect with two rim bridges, 3 bottom surface gluing, in web portion 11 or so in hinge seam
Two sides are filled with grouting material 4, the upper end two sides that web portion 11 extends hinge seam be equipped with it is corresponding be fitted in corresponding grouting material 4 and
The two sides upper limb edge 21 of two rim bridges, 3 top surface is equipped with bridge deck pavement, bridge above two sides upper limb edge 21 and rim bridge 3
Face pave-load layer specifically includes the in-situ layer 5 being laid on two sides upper limb edge 21 and on rim bridge 3, further includes being laid on in-situ layer
Waterproof layer and bitumen concrete bridge floor layer 6 on 5 are wherein equipped with multiple lower ends and are fixedly connected on two sides upper limb edge 21 in in-situ layer 5
On vertical reinforcer 22, vertical reinforcer 22 is specially that lower end is fixedly connected on the peg of 21 upper surface of two sides upper limb edge.
Web portion 11 is inserted into hinge seam, being connect by two sides bottom wing edge 12 with two rim bridges, 3 bottom surface gluing keeps web portion 11 preliminary
It is fixed in hinge seam, is fixedly connected with two rim bridges 3 as an entirety by filling grouting material 4 in hinge seam, then lead to
It crosses two sides upper limb edge 21 and further strengthens the connection cut with scissors at seam with two rim bridges 3, the peg that two sides upper limb edge 21 is equipped with makes
In-situ layer 5 and two rim bridges 3 are connected, and improve 3 stress condition of rim bridge.
The upper end that web portion 11 extends hinge seam is installed with the L-type component extended along the longitudinal direction respectively, and L-type component includes
The vertical edge for forming the horizontal edge of two sides upper limb edge 21 and being connected with 11 upper end of web portion, the vertical edge upper end of two L-type components, which is equipped with, to be passed through
Logical bolt mounting holes 23, two L-type components and web portion 11 pass through together with 24 fixing assembling of fastening bolt, wherein web portion 11
It is equipped with the slotted eye 13 that long axis vertically extends.The slotted eye 13 that long axis vertically extends is that the installation of L-type component mentions
Installation surplus is supplied.
Wherein, web portion 11 is equipped with the multiple through-holes being spaced apart along the longitudinal direction, and through-hole is specially hexagonal honeycomb
Hole 14.The setting of multiple through-holes enables the grouting material 4 of 11 two sides of web portion to be mutually fixed together, and further improves two
The bonding strength of rim bridge 3 makes two rim bridges 3 have better shear behavior.
Further, the width of two sides bottom wing edge 12 in the lateral direction is greater than two sides upper limb edge 21 in left and right
Width on direction.Two sides upper limb edge 21 is primarily subjected to extrusion stress, and two sides bottom wing edge 12 is primarily subjected to tensile stress, to keep away
Exempt from two sides upper limb edge 21 and be bent over and improve 12 stress-bearing capability of two sides bottom wing edge, two sides upper limb edge 21 should it is shorter and two
Side bottom wing edge 12 should be longer.
The embodiment 2 of present invention offer bridge strengthening structure:
The present embodiment Bridge ruggedized construction and the difference of embodiment 1 essentially consist in, and cancel two sides upper limb edge and web portion
The bolt mounting holes being equipped with directly weld together two sides upper limb edge with web portion.
The embodiment 3 of present invention offer bridge strengthening structure:
The present embodiment Bridge ruggedized construction and the difference of embodiment 1 essentially consist in, the vertical reinforcer on the upper limb edge of two sides
For stop catch plate, in-situ layer and the connected degree of two rim bridges are further increased.
The embodiment 4 of present invention offer bridge strengthening structure:
The present embodiment Bridge ruggedized construction and the difference of embodiment 1 essentially consist in, the two sides lower flange of inverted T shaped strenthening member
Portion be it is identical as the structure of two sides upper limb edge, be fixed together by fastening bolt and web portion.It is provided in the present embodiment
Two sides bottom wing edge is releasable connection, convenient transportation.
Above-described embodiment median ventral plate portion is equipped with multiple through-holes for reinforcing two rim bridge bonding strengths, which is six sides
Shape honeycomb hole can also be other shapes in other embodiments.
The present invention provides a kind of embodiment of bridge strengthening construction method, includes the following steps:
(1) section extended along the longitudinal direction adjacent two rim bridge in left and right is fixed in inverted T shaped strenthening member to be formed by
It cuts with scissors at seam, strenthening member includes the web portion in the insertion hinge seam extended along the longitudinal direction, and web portion lower end two sides are equipped with
The corresponding two sides bottom wing edge for being fitted in two rim bridge bottom surfaces；
(2) to the grouting of hinge seam to close corresponding hinge seam；
(3) it is correspondingly provided with to correspond in the upper end two sides that web portion extends upward hinge seam and is fitted in the grouting and corresponding rim bridge
The two sides upper limb edge of top surface；
(4) bridge deck pavement is laid on two sides upper limb edge and rim bridge.
Wherein step 1 median ventral plate portion and bottom plate are structure as a whole to form strenthening member, and bottom plate is located at web portion or so two
The both sides of side form two sides bottom wing edge, are first inserted into web portion from bottom to top in hinge seam, are lifted upwards using fixed device
Strenthening member is strenthening member to be fixed at hinge seam.
Strenthening member can also be pressed against on two rim bridges from below using fixed device in step 1, and then make to reinforce
Component is fixed at hinge seam.
Stop grouting in step 2 when grouting material arrival is concordant with rim bridge upper surface, and grouting upper surface is carried out
Smooth out maintenance processing.
Step 3 median ventral plate portion upper end and two sides upper limb edge vertical section are equipped with bolt mounting holes, two sides upper limb edge and abdomen
Plate portion is assembled together by fastening bolt, and directly two sides upper limb edge can also be welded on web portion.
After being arranged in step 3 and fixing two sides upper limb edge, it is fixedly connected in two sides upper limb edge upper surface multiple vertical
Reinforcer, the vertical reinforcer can be welded on peg or baffle on the upper surface of two sides upper limb edge for lower end.
The grouting upper surface cut with scissors at seam is polished flat before upper limb edge in two sides is installed in step 3.
Bridge deck pavement in step 4 includes the in-situ layer being laid on the upper limb edge of two sides and on side rim bridge, is erected
It is located in in-situ layer to reinforcer, bridge deck pavement further includes the waterproof layer being laid on in-situ layer and bitumen concrete bridge floor layer.
The present invention provides a kind of bridge strengthening restorative procedure, includes the following steps:
(1) the hinge seam between impaired adjacent two rim bridge is cleared up；
(2) at by the section extended along the longitudinal direction in the hinge seam after the fixed cleaning of inverted T shaped strenthening member, strenthening member includes
Web portion in the insertion extended along the longitudinal direction the hinge seam, web portion lower end two sides are equipped with correspondence and are fitted in two rim bridge bottoms
The two sides bottom wing edge in face；
(3) to the grouting of hinge seam to close corresponding hinge seam；
(4) it is correspondingly provided with to correspond in the upper end two sides that web portion extends upward hinge seam and is fitted in the grouting and corresponding rim bridge
The two sides upper limb edge of top surface；
(5) bridge deck pavement is laid on two sides upper limb edge and rim bridge.
Wherein, step 2 median ventral plate portion and bottom plate are structure as a whole to form inverted T shaped strenthening member, and bottom plate is located at web
Both sides at left and right sides of portion form two sides bottom wing edge, are first inserted into web portion from bottom to top in hinge seam, utilize fixed device
Lifting strenthening member is upwards strenthening member to be fixed at hinge seam.
Strenthening member can also be pressed against on two rim bridges from below using fixed device in step 2, and then make to reinforce
Component is fixed at hinge seam.
Stop grouting in step 3 when grouting material arrival is concordant with rim bridge upper surface, and grouting upper surface is carried out
Smooth out maintenance processing.
Step 4 median ventral plate portion upper end and two sides upper limb edge vertical section are equipped with bolt mounting holes, 21 He of two sides upper limb edge
Web portion is assembled together by fastening bolt, and directly two sides upper limb edge 21 can also be welded on web portion.
After being arranged in step 4 and fixing two sides upper limb edge, it is fixedly connected in two sides upper limb edge upper surface multiple vertical
Reinforcer, the vertical reinforcer can be welded on peg or baffle on the upper surface of two sides upper limb edge for lower end.
The grouting upper surface cut with scissors at seam is polished flat before upper limb edge in two sides is installed in step 4.
Bridge deck pavement in step 5 includes the in-situ layer being laid on the upper limb edge of two sides and on side rim bridge, is erected
It is located in in-situ layer to reinforcer, bridge deck pavement further includes the waterproof layer being laid on in-situ layer and bitumen concrete bridge floor layer.
The present invention provides a kind of embodiment 1 of bridge strengthening device:
As shown in Fig. 1 to Fig. 5, bridge strengthening device includes adjacent two bridges to form the hinge seam extended along the longitudinal direction in left and right
Portion 3, rim bridge 3 are specially two adjacent two hollow slab girders in blank board bridge, further include extending to cut along the longitudinal direction
Face is in the strenthening member of inverted T-type structure, and strenthening member includes the web portion 11 for extending along the longitudinal direction and being inserted into hinge seam, web
11 lower end of portion has bottom plate, and the both sides for being located at 11 left and right sides of web portion of the bottom plate form corresponding press two rim bridges, 3 bottom
The two sides bottom wing edge 12 in face, two sides bottom wing edge 12 are connect with two rim bridges, 3 bottom surface gluing, and web portion 11 extends hinge seam
Upper end two sides are equipped with the corresponding two sides upper limb edge 21 for being fitted in 11 top surface of corresponding grouting material 4 and two rim bridges, two sides upper limb
21 upper surface of edge is equipped with multiple lower ends and is fixedly connected on the vertical reinforcer 22 on two sides upper limb edge 21, vertical reinforcer 22
Specially peg.Web portion 11 is inserted into hinge seam, being connect by two sides bottom wing edge 12 with two rim bridges, 3 bottom surface gluing makes abdomen
Plate portion 11 is tentatively fixed in hinge seam, web portion 11 and hinge slit at grouting mouth facilitate the injection of grouting material, then pass through
Two sides upper limb edge 21 further strengthens the connection at hinge seam with two rim bridges 3, and the peg that two sides upper limb edge 21 is equipped with makes existing
It pours layer 5 and two rim bridges 3 is connected, improve rim bridge stress condition.
The upper end two sides that web portion 11 extends hinge seam are installed with the L-type component extended along the longitudinal direction, L-type component respectively
Including the vertical edge for forming the horizontal edge of two sides upper limb edge 21 and being connected with 11 upper end of web portion, the upper end of the vertical edge of two L-type components
Bolt mounting holes 23 equipped with perforation, web portion 11 are equipped with the slotted eye 13 that long axis vertically extends, two L-type components and abdomen
Plate portion 11 passes through 24 fixing assembling of fastening bolt together.Slotted eye 13 provides installation surplus for the installation of L-type component.
Wherein, web portion 11 is equipped with the multiple through-holes being spaced apart along the longitudinal direction, and through-hole is specially hexagonal honeycomb
Hole 14.The setting of multiple through-holes enables the grouting material 4 of 11 two sides of web portion to be mutually fixed together, and further improves two
The bonding strength of rim bridge 11 makes two rim bridges 11 have better shear behavior.
Further, the width of two sides bottom wing edge 12 in the lateral direction is greater than two sides upper limb edge 21 in left and right
Width on direction.Two sides upper limb edge 21 is primarily subjected to extrusion stress, and two sides bottom wing edge 12 is primarily subjected to tensile stress, to keep away
Exempt from two sides upper limb edge 21 and be bent over and improve 12 tension ability of two sides bottom wing edge, two sides upper limb edge 21 should it is shorter and two
Side bottom wing edge 12 should be longer.
The embodiment 2 of present invention offer bridge strengthening device:
The present embodiment Bridge bracing means and the difference of embodiment 1 essentially consist in, directly by two sides upper limb edge and web portion
Weld together.This embodiment avoids the troubles for installing multiple fixing bolts, mitigate construction personnel's work load.
The embodiment 3 of present invention offer bridge strengthening device:
The present embodiment Bridge bracing means and the difference of embodiment 1 essentially consist in, the vertical reinforcer on the upper limb edge of two sides
For stop catch plate, in-situ layer and the connected degree of two rim bridges are further increased.
Above-described embodiment median ventral plate portion is equipped with multiple through-holes for reinforcing two rim bridge bonding strengths, which is six sides
Shape honeycomb hole can also be other shapes in other embodiments.
The present invention provides the embodiment 1 of fixed device:
Fixed device is specially the L-type component of short section, passes through spiral shell using the L-type component of the short section when tentatively being fixed after grouting
Bolt is fixedly connected with web portion, and then plays the role of the inverted T shaped strenthening member of lifting.
The present invention provides the embodiment 2 of fixed device:
Fixed device is specially the bracket being equipped on bridge floor, and bracket is equipped with the steel wire cable of connection web portion upper bolt hole,
Inverted T shaped strenthening member is lifted by steel wire cable after grouting.
The present invention provides the embodiment 3 of fixed device:
Fixed device is specially L-type component, and when tentatively being fixed after grouting, web portion two sides L-type component is passed through bolt pair
It should be installed in a staggered manner on the bolt hole of web portion, guarantee that L-type component is that grouting reserves enough grouting mouths.
Claims (10)
1. a kind of bridge strengthening structure, including adjacent two rim bridges to form the hinge seam that front and back extends in left and right, it is characterised in that:
It further include the strenthening member that the section that extends along the longitudinal direction is in inverted T-type structure, strenthening member includes extending along the longitudinal direction
Web portion in the corresponding insertion hinge seam, web portion lower end two sides are equipped with the corresponding two sides bottom wing for being fitted in two rim bridge bottom surfaces
Edge cuts with scissors and is filled with grouting material in seam at left and right sides of the web portion, and the web portion extends the upper of the hinge seam
End two sides are equipped with the corresponding two sides upper limb edge for being fitted in corresponding grouting material and two rim bridge top surfaces, two sides upper limb edge and bridge
Bridge deck pavement is equipped with above beam portion.
2. bridge strengthening structure according to claim 1, it is characterised in that: the web portion lower end is equipped with along the longitudinal direction
The bottom plate of extension, the both sides which is located at left and right sides of web portion form the two sides bottom wing edge.
3. bridge strengthening structure according to claim 1, it is characterised in that: two sides bottom wing edge is in the lateral direction
Width be greater than the width of two sides upper limb edge in the lateral direction.
4. bridge strengthening structure according to claim 1, it is characterised in that: two sides bottom wing edge and the rim bridge
Bottom surface gluing connection.
5. a kind of bridge strengthening construction method, characterized by the following steps:
(1) section extended along the longitudinal direction adjacent two rim bridge in left and right is fixed in inverted T shaped strenthening member to be formed by
It cuts with scissors at seam, strenthening member includes the web portion in the insertion hinge seam extended along the longitudinal direction, and web portion lower end two sides are equipped with
The corresponding two sides bottom wing edge for being fitted in two rim bridge bottom surfaces；
(2) to the grouting of hinge seam to close corresponding hinge seam；
(3) it is correspondingly provided with to correspond in the upper end two sides that web portion extends upward hinge seam and is fitted in the grouting and corresponding rim bridge
The two sides upper limb edge of top surface；
(4) bridge deck pavement is laid on two sides upper limb edge and rim bridge.
6. bridge strengthening construction method according to claim 5, it is characterised in that: in step 1, by section in inverted T shaped
In the insertion of the strenthening member from bottom to top hinge seam, it connect two sides bottom wing edge with the bottom surface gluing of corresponding rim bridge,
Fixed device is recycled to lift strenthening member upwards strenthening member to be fixed at the hinge seam.
7. a kind of bridge strengthening restorative procedure, characterized by the following steps:
(1) the hinge seam between impaired adjacent two rim bridge is cleared up；
(2) at by the section extended along the longitudinal direction in the hinge seam after the fixed cleaning of inverted T shaped strenthening member, strenthening member includes
Web portion in the insertion extended along the longitudinal direction the hinge seam, web portion lower end two sides are equipped with correspondence and are fitted in two rim bridge bottoms
The two sides bottom wing edge in face；
(3) to the grouting of hinge seam to close corresponding hinge seam；
(4) it is correspondingly provided with to correspond in the upper end two sides that web portion extends upward hinge seam and is fitted in the grouting and corresponding rim bridge
The two sides upper limb edge of top surface；
(5) bridge deck pavement is laid on two sides upper limb edge and rim bridge.
8. bridge strengthening restorative procedure according to claim 7, it is characterised in that: in step 1, by section in inverted T shaped
In the insertion of the strenthening member from bottom to top hinge seam, it connect two sides bottom wing edge with the bottom surface gluing of corresponding rim bridge,
Fixed device is recycled to lift strenthening member upwards strenthening member to be fixed at the hinge seam.
9. a kind of bridge strengthening device, it is characterised in that: the section including extending along the longitudinal direction is in the reinforcing structure of inverted T-type structure
Part, strenthening member include that corresponding two rim bridge that is used to be inserted into extended along the longitudinal direction forms the hinge seam extended along the longitudinal direction
In web portion, web portion lower end two sides are equipped with for the corresponding two sides bottom wing edge for being fitted in corresponding two rim bridge bottom surface, add
It is fixedly mounted with the two sides upper limb edge set further include for being connected in the upper end for extending the hinge seam of web portion, two sides upper limb edge
It is respectively provided with the grouting for being fitted in corresponding hinge seam and the downside on corresponding rim bridge.
10. bridge strengthening device according to claim 9, it is characterised in that: the web portion lower end is equipped with along front and back
To the bottom plate of extension, the side of the bottom plate being located at left and right sides of web portion forms the two sides bottom wing edge.
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|---|---|---|---|
| CN201710922449.7A CN109594484A (en) | 2017-09-30 | 2017-09-30 | Bridge strengthening device, ruggedized construction, reinforced construction method and reinforcement and repair method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710922449.7A CN109594484A (en) | 2017-09-30 | 2017-09-30 | Bridge strengthening device, ruggedized construction, reinforced construction method and reinforcement and repair method |
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| CN201710922449.7A Pending CN109594484A (en) | 2017-09-30 | 2017-09-30 | Bridge strengthening device, ruggedized construction, reinforced construction method and reinforcement and repair method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440156A (en) * | 2019-08-30 | 2019-11-12 | 新月光电（深圳）股份有限公司 | The ruggedized construction of LED lamp bead pedestal |
| CN110904866A (en) * | 2019-12-25 | 2020-03-24 | 德州市公路工程总公司 | Concrete bridge deck pavement replacement and repair structure and construction method |
| WO2021209078A3 (en) * | 2020-09-22 | 2021-12-02 | 郑州市交通规划勘察设计研究院 | Hollow slab bridge |
| CN114250719A (en) * | 2020-09-22 | 2022-03-29 | 郑州市交通规划勘察设计研究院 | Steel beam structural part for hollow slab bridge maintenance |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006241801A (en) * | 2005-03-02 | 2006-09-14 | Asahi Engineering Kk | Repair structure of girder bridge |
| CN102352606A (en) * | 2011-08-05 | 2012-02-15 | 天津城市建设学院 | Transverse in-vitro prestress solidifying method of road hinged hollow slab bridge |
| CN103046478A (en) * | 2013-01-20 | 2013-04-17 | 青岛理工大学 | Assembled plate girder bridge hinge joint reinforcing opposite-pulling device |
| CN203007819U (en) * | 2013-01-20 | 2013-06-19 | 青岛理工大学 | Assembled plate girder bridge hinge joint reinforcing opposite-pulling device |
| CN103898841A (en) * | 2014-04-23 | 2014-07-02 | 魏志新 | Hollow slab bridge reinforcing method |
| CN203741730U (en) * | 2013-12-20 | 2014-07-30 | 江苏中瑞路桥建设有限公司 | T-shaped bridge reinforcing structure |
| CN203890900U (en) * | 2014-04-28 | 2014-10-22 | 郑州大学 | Structure for quickly restoring hollow slab bridge hinge joint |
| CN104532997A (en) * | 2014-12-26 | 2015-04-22 | 宝钢建筑***集成有限公司 | Assembly type floor system and construction method thereof |
| CN105019365A (en) * | 2014-04-28 | 2015-11-04 | 郑州大学 | Structure for rapidly restoring hinge joint of hollow slab bridge and construction method thereof |
| CN105735148A (en) * | 2016-03-04 | 2016-07-06 | 中交路桥（北京）科技有限公司 | Strengthening method for treating hollow board bridge single board stress under bridge |
| CN205669175U (en) * | 2016-06-06 | 2016-11-02 | 交通运输部公路科学研究所 | Bridge hinge seam bracing means |
| CN106223212A (en) * | 2016-08-11 | 2016-12-14 | 宁波市交通规划设计研究院有限公司 | A kind of reinforcement means suffering fired damage bridge |
| CN106245539A (en) * | 2016-08-04 | 2016-12-21 | 上海朗兆公路铁路养护工程技术有限公司 | A kind of simply supported slab beam bridge is for the reinforcement means of Over-size transport |
| CN106835929A (en) * | 2017-03-09 | 2017-06-13 | 河南大建桥梁钢构股份有限公司 | A kind of assembled Wavelike steel webplate continuous composite beam |
| CN106958207A (en) * | 2016-12-16 | 2017-07-18 | 上海浦江桥隧运营管理有限公司 | The small hinge seam early stage precuring complete set technology of plate girder bridge |
| CN207435923U (en) * | 2017-09-30 | 2018-06-01 | 郑州市交通规划勘察设计研究院 | A kind of bridge strengthening device and ruggedized construction |
-
2017
- 2017-09-30 CN CN201710922449.7A patent/CN109594484A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006241801A (en) * | 2005-03-02 | 2006-09-14 | Asahi Engineering Kk | Repair structure of girder bridge |
| CN102352606A (en) * | 2011-08-05 | 2012-02-15 | 天津城市建设学院 | Transverse in-vitro prestress solidifying method of road hinged hollow slab bridge |
| CN103046478A (en) * | 2013-01-20 | 2013-04-17 | 青岛理工大学 | Assembled plate girder bridge hinge joint reinforcing opposite-pulling device |
| CN203007819U (en) * | 2013-01-20 | 2013-06-19 | 青岛理工大学 | Assembled plate girder bridge hinge joint reinforcing opposite-pulling device |
| CN203741730U (en) * | 2013-12-20 | 2014-07-30 | 江苏中瑞路桥建设有限公司 | T-shaped bridge reinforcing structure |
| CN103898841A (en) * | 2014-04-23 | 2014-07-02 | 魏志新 | Hollow slab bridge reinforcing method |
| CN105019365A (en) * | 2014-04-28 | 2015-11-04 | 郑州大学 | Structure for rapidly restoring hinge joint of hollow slab bridge and construction method thereof |
| CN203890900U (en) * | 2014-04-28 | 2014-10-22 | 郑州大学 | Structure for quickly restoring hollow slab bridge hinge joint |
| CN104532997A (en) * | 2014-12-26 | 2015-04-22 | 宝钢建筑***集成有限公司 | Assembly type floor system and construction method thereof |
| CN105735148A (en) * | 2016-03-04 | 2016-07-06 | 中交路桥（北京）科技有限公司 | Strengthening method for treating hollow board bridge single board stress under bridge |
| CN205669175U (en) * | 2016-06-06 | 2016-11-02 | 交通运输部公路科学研究所 | Bridge hinge seam bracing means |
| CN106245539A (en) * | 2016-08-04 | 2016-12-21 | 上海朗兆公路铁路养护工程技术有限公司 | A kind of simply supported slab beam bridge is for the reinforcement means of Over-size transport |
| CN106223212A (en) * | 2016-08-11 | 2016-12-14 | 宁波市交通规划设计研究院有限公司 | A kind of reinforcement means suffering fired damage bridge |
| CN106958207A (en) * | 2016-12-16 | 2017-07-18 | 上海浦江桥隧运营管理有限公司 | The small hinge seam early stage precuring complete set technology of plate girder bridge |
| CN106835929A (en) * | 2017-03-09 | 2017-06-13 | 河南大建桥梁钢构股份有限公司 | A kind of assembled Wavelike steel webplate continuous composite beam |
| CN207435923U (en) * | 2017-09-30 | 2018-06-01 | 郑州市交通规划勘察设计研究院 | A kind of bridge strengthening device and ruggedized construction |
Non-Patent Citations (1)
| Title |
|---|
| 薛建阳: "《钢与混凝土组合结构》", vol. 978, 华中科技大学出版社, pages: 74 - 76 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440156A (en) * | 2019-08-30 | 2019-11-12 | 新月光电（深圳）股份有限公司 | The ruggedized construction of LED lamp bead pedestal |
| CN110904866A (en) * | 2019-12-25 | 2020-03-24 | 德州市公路工程总公司 | Concrete bridge deck pavement replacement and repair structure and construction method |
| CN110904866B (en) * | 2019-12-25 | 2021-04-06 | 德州市公路工程总公司 | Concrete bridge deck pavement replacement and repair structure and construction method |
| WO2021209078A3 (en) * | 2020-09-22 | 2021-12-02 | 郑州市交通规划勘察设计研究院 | Hollow slab bridge |
| CN114250719A (en) * | 2020-09-22 | 2022-03-29 | 郑州市交通规划勘察设计研究院 | Steel beam structural part for hollow slab bridge maintenance |
| CN114250718A (en) * | 2020-09-22 | 2022-03-29 | 郑州市交通规划勘察设计研究院 | Hollow slab bridge and maintenance method thereof |
| CN114250719B (en) * | 2020-09-22 | 2023-02-03 | 郑州市交通规划勘察设计研究院 | Steel beam structural part for hollow slab bridge maintenance |
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