CN113981838A - Connection construction method for widened bridge joint - Google Patents
Connection construction method for widened bridge joint Download PDFInfo
- Publication number
- CN113981838A CN113981838A CN202111222133.XA CN202111222133A CN113981838A CN 113981838 A CN113981838 A CN 113981838A CN 202111222133 A CN202111222133 A CN 202111222133A CN 113981838 A CN113981838 A CN 113981838A
- Authority
- CN
- China
- Prior art keywords
- bridge
- construction method
- widened
- groove
- new
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 43
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 73
- 239000010959 steel Substances 0.000 claims abstract description 73
- 239000004567 concrete Substances 0.000 claims abstract description 32
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 32
- 239000000835 fiber Substances 0.000 claims abstract description 28
- 239000010426 asphalt Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000004519 grease Substances 0.000 claims abstract description 13
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 9
- 230000002787 reinforcement Effects 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 6
- 230000004308 accommodation Effects 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 230000000712 assembly Effects 0.000 description 11
- 238000000429 assembly Methods 0.000 description 11
- 238000005553 drilling Methods 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011210 fiber-reinforced concrete Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a connection construction method of a widened bridge joint, wherein the widened bridge comprises a new bridge and an existing bridge, a connecting seam is arranged between the new bridge and the existing bridge, and the bridge deck of the new bridge and the bridge deck of the existing bridge are positioned on the same plane; the connection construction method comprises the following steps: grooves are chiseled on one sides of the new bridge and the existing bridge facing the connecting joints; installing a reinforcing component in each groove; pouring steel fiber concrete into each groove; filling asphalt horseshoe grease into the connecting joint after the steel fiber concrete reaches the preset strength; on one hand, steel fiber concrete is adopted, and the connecting seams are filled with the asphalt horseshoe grease, so that the integrity of the widening bridge is improved; meanwhile, the driving safety is improved; on the other hand, the method has simple construction, short construction period and low cost.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a construction method for widening connection of bridge joints.
Background
At present, with the rapid development of the urbanization process, the existing bridge can not meet the traffic demand gradually, and the existing bridge needs to be widened and modified to meet the traffic requirement.
The bridge widening is an important measure for solving the bridge deck width of the existing bridge at present, the concrete of the existing bridge shrinks after the existing bridge is used for a long time, the creep of the existing bridge is also completed due to the self-weight effect, the problems of shrinkage, creep and the like of the bridge to be widened are considered in upgrading and reconstruction, and deformation or fracture of a joint surface caused by mixing of new concrete and old concrete is avoided.
However, in the prior art, rigid connection or hinge connection is often adopted, and the bridge deck at the joint is cracked due to long-time driving load and uneven settlement of the bridge, so that driving safety is reduced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a construction method for widening the connection of a bridge joint, which has the advantages that cracks can be prevented from appearing on the bridge floor at the connection, and the integrity of the widened bridge is improved; meanwhile, the safety of driving is improved.
The above object of the present invention is achieved by the following technical solutions: a connection construction method for a widened bridge joint comprises a new bridge and an existing bridge, a connection seam is arranged between the new bridge and the existing bridge, and the bridge deck of the new bridge and the bridge deck of the existing bridge are located on the same plane; the connection construction method comprises the following steps:
grooves are chiseled on one sides of the new bridge and the existing bridge facing the connecting joints;
installing a reinforcement assembly in each of the channels;
pouring steel fiber concrete into each groove;
and after the steel fiber concrete reaches the preset strength, filling asphalt horseshoe grease into the connecting joint.
Preferably, the connection construction method for the widened bridge connection part provided by the invention further comprises the following steps of before grooves are chiseled on the new bridge and the existing bridge on the sides facing the connection seam:
and dismantling the railings of the existing bridge.
Preferably, the widened bridge joint connection construction method provided by the invention comprises the following steps that the reinforcing component comprises a plurality of fixing components and at least one reinforcing steel bar; a plurality of fixed subassembly is along the extending direction interval of slot sets up, the one end of reinforcing bar passes in proper order a plurality ofly fixed subassembly, the reinforcing bar with fixed subassembly is connected.
Preferably, in the connection construction method for the widened bridge joint provided by the invention, the fixing component comprises an anchor bar and angle steel, the anchor bar is enclosed into an accommodating space, the angle steel is arranged on the outer wall of one side of the anchor bar, which faces the connecting seam, and the inner wall of the angle steel is connected with the outer wall of the anchor bar.
Preferably, the construction method for connecting widened bridge joints provided by the invention, wherein a reinforcing component is installed in each groove, comprises the following steps:
a group of anchor bars are arranged in each groove along the extending direction of the groove;
three reinforcing steel bars penetrate through each group of anchor bars, the reinforcing steel bars penetrate through the grooves, and the reinforcing steel bars are bound with the anchor bars;
and welding the angle steel on one side of each anchor bar facing the connecting seam.
Preferably, in the connection construction method for the widened bridge connection part provided by the invention, the top surfaces of the angle steels and the bridge deck of the new bridge or the existing bridge are positioned on the same plane.
Preferably, according to the construction method for connecting the widened bridge joints, the top surface of each angle steel is coated with a rust-proof layer.
Preferably, the construction method for connecting widened bridge joints provided by the present invention further comprises, after installing the reinforcing component in each of the trenches and before pouring the steel fiber reinforced concrete into each of the trenches: and removing impurities in each groove by using an air machine.
Preferably, in the connection construction method for the widened bridge connection part provided by the invention, the anchor bar is a pentagonal frame, a first connection part and a second connection part are arranged on one side of the anchor bar, which is far away from the angle steel, the first connection part extends outwards along the first direction of the new bridge, and the second connection part extends outwards along the second direction of the new bridge.
Preferably, in the connection construction method for the widened bridge connection part provided by the invention, the width range of the groove is as follows: 20cm-30cm, the height range of the groove is as follows: 14cm-24 cm.
In conclusion, the beneficial technical effects of the invention are as follows: according to the connection construction method for the widened bridge joints, the widened bridge comprises a new bridge and an existing bridge, a connecting seam is arranged between the new bridge and the existing bridge, and the bridge deck of the new bridge and the bridge deck of the existing bridge are located on the same plane; the connection construction method comprises the following steps: grooves are chiseled on one sides of the new bridge and the existing bridge facing the connecting joints; installing a reinforcing component in each groove; pouring steel fiber concrete into each groove; filling asphalt horseshoe grease into the connecting joint after the steel fiber concrete reaches the preset strength; on one hand, steel fiber concrete is adopted, and the connecting seams are filled with the asphalt horseshoe grease, so that the integrity of the widening bridge is improved; meanwhile, the driving safety is improved; on the other hand, the method has simple construction, short construction period and low cost.
Drawings
Fig. 1 is a cross-sectional view of a widened bridge according to an embodiment of the present invention.
Fig. 2 is a schematic view of the overall structure of the widened bridge according to the embodiment of the present invention.
Fig. 3 is a cross-sectional view of a new bridge among the widened bridges provided by the embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a fixing component in a widened bridge according to an embodiment of the present invention.
Fig. 5 is a flowchart of a connection construction method for a widened bridge connection portion according to an embodiment of the present invention.
In the figure, 1, a bridge is widened; 10. a new bridge; 101. prefabricating a hollow slab; 102. a cover layer;
20. an existing bridge; 30. connecting seams; 40. a reinforcement assembly; 401. a fixing assembly; 4011. anchoring ribs; 4012. angle steel; 4013. a first connection portion; 4014. a second connecting portion; 4015. an accommodating space; 402. reinforcing steel bars; 50. steel fiber concrete; 60. asphalt horseshoe resin; 70. a trench; 80. a first direction; 90. a second direction.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, in order to disclose a connection construction method for a widened bridge connection part, the widened bridge 1 includes a new bridge 10 and an existing bridge 20, a connection seam 30 is provided between the new bridge 10 and the existing bridge 20, and a bridge deck of the new bridge 10 and a bridge deck of the existing bridge 20 are located on the same plane.
Specifically, the new bridge 10 includes a precast hollow core slab 101 and a cladding layer 102 laid on the top surface of the precast hollow core slab 101. Wherein the overlay 102 is laid from asphalt. The thickness of the cover layer 102 ranges from 5cm to 15cm, and in this embodiment, the thickness of the cover layer 102 is 9 cm.
It should be noted that the structure of the new bridge 10 is substantially the same as that of the existing bridge 20, and the structure of the existing bridge 20 is not described in detail herein.
The width of the connecting seam 30 between the new bridge 10 and the existing bridge 20 is 1cm-4cm, and in this embodiment, the width of the connecting seam 30 is 2 cm.
With continued reference to fig. 1 to 5, in this embodiment, the connection construction method includes the following steps:
s101, chiseling grooves 70 on the sides, facing the connecting seam 30, of the new bridge girder 10 and the existing bridge girder 20.
Specifically, a groove 70 is chiseled by a hand-held hydraulic rock drill on both sides of the new bridge 10 and the existing bridge 20 facing the connection seam 30. It should be noted that the reinforcing bar 402 mesh in the existing bridge 20 cannot be broken when the trench 70 is drilled.
Wherein the groove 70 extends along the length direction of the new bridge 10, and the groove 70 penetrates the new bridge 10. The cross-sectional shape of the groove 70 is L-shaped with a plane perpendicular to the new bridge 10 as a cross-section.
The structure of the groove 70 formed in the existing bridge 20 may be the same as or different from the structure of the groove 70 formed in the new bridge 10. In this embodiment, the structure of the groove 70 formed in the existing bridge 20 is the same as the structure of the groove 70 formed in the new bridge 10, and the description of the structure of the groove 70 formed in the existing bridge 20 is omitted.
Further, in the present embodiment, the width range of the trench 70 is: 20cm-30cm, the height of the trench 70 ranges from: 14cm-24 cm.
In this embodiment, the width of the trench 70 is 25cm, and the height of the trench 70 is 19 cm. Further, in the present embodiment, before the new bridge 10 and the existing bridge 20 are both chiseled with the groove 70 on the side facing the connecting seam 30, the method further includes: dismantling the railings of the existing bridge 20; the connection of the existing bridge 20 to the new bridge 10 is thereby facilitated by removing the railings of the existing bridge 20.
Specifically, after the deck pavement and the guardrail construction of the new bridge 10 are completed, the railings of the existing bridge 20 are removed. And (3) dismantling the railing of the existing bridge 20 by adopting a hydraulic rock drill, and chiseling the railing of the existing bridge 20 to the top surface of the beam plate of the existing bridge 20.
S102, a reinforcing member 40 is installed in each groove 70.
Specifically, the reinforcement assemblies 40 are installed in the channels 70 of the new bridge 10 and the channels 70 of the existing bridge 20, respectively.
With continued reference to fig. 1-4, in this example, the reinforcement assembly 40 includes a plurality of securing assemblies 401 and at least one reinforcement bar 402; the plurality of fixing assemblies 401 are arranged at intervals along the extending direction of the groove 70, one end of the steel bar 402 sequentially passes through the plurality of fixing assemblies 401, and the steel bar 402 is connected with the fixing assemblies 401; by providing a plurality of fixing assemblies 401, the firmness of the connection of the new bridge 10 to the existing bridge 20 is improved.
Specifically, a plurality of fixing assemblies 401 are inserted into the groove 70, each fixing assembly 401 is connected to the hollow slab 101, and a preset distance is formed between the plurality of fixing assemblies 401, and the preset distance ranges from 20cm to 30 cm. In this embodiment, the predetermined distance is 25 cm.
Wherein the reinforcing bars 402 extend along the length of the new bridge 10, and the reinforcing bars 402 penetrate the grooves 70.
The reinforcing assembly 40 may include a plurality of reinforcing bars 402, the reinforcing bars 402 are arranged in parallel, one end of each reinforcing bar 402 sequentially passes through the plurality of fixing assemblies 401, the reinforcing bars 402 are arranged around the fixing assemblies 401 at intervals in the circumferential direction, and the reinforcing bars 402 are connected with the fixing assemblies 401; by providing a plurality of reinforcing bars 402, the firmness of the connection of the new bridge 10 to the existing bridge 20 is further improved.
In this embodiment, the reinforcement assembly 40 includes three rebars 402.
Further, in this embodiment, fixed subassembly 401 includes anchor bar 4011 and angle steel 4012, and anchor bar 4011 encloses and establishes into accommodation space 4015, and angle steel 4012 sets up on the outer wall of anchor bar 4011 towards one side of joint line 30, and angle steel 4012's inner wall and anchor bar 4011's outer wall are connected.
Specifically, a plurality of anchor bars 4011 are passed in proper order to the one end of reinforcing bar 402, and reinforcing bar 402's periphery wall and accommodation space 4015's inner wall butt, reinforcing bar 402 is connected with anchor bar 4011. The steel bar 402 can be connected with the anchor bar 4011 in a binding mode, and the steel bar 402 can also be connected with the anchor bar 4011 in a welding mode, which is not limited in this embodiment.
For example, the angle steel 4012 may be connected to the anchor bar 4011 by welding, and of course, the angle steel 4012 may also be connected to the anchor bar 4011 by bolting.
Further, in this embodiment, anchor bar 4011 is the pentagon frame, and one side that anchor bar 4011 deviates from angle steel 4012 is provided with first connecting portion 4013 and second connecting portion 4014, and first connecting portion 4013 outwards extends along first direction 80 of new bridge 10, and second connecting portion 4014 outwards extends along second direction 90 of new bridge 10.
The first direction 80 of the new bridge 10 is the height direction of the new bridge 10, and the second direction 90 of the new bridge 10 is the width direction of the new bridge 10.
Wherein, the width of the trench 70 is the dimension of the trench 70 along the second direction 90, and the height of the trench 70 is the dimension of the trench 70 along the first direction 80.
The first connecting portion 4013 and the second connecting portion 4014 are rod-shaped.
Further, in this embodiment, S102 installs the reinforcing member 40 in each groove 70, including:
s1021, a set of anchor bars 4011 is installed in each groove 70 along the extending direction of the groove 70.
It should be noted that the anchor bars 4011 include a plurality of anchor bars 4011 therein, and the anchor bars 4011 are disposed at intervals along the extending direction of the groove 70. And the distance between every two adjacent anchor bars 4011 is 25 cm.
Wherein, the anchor bars 4011 in the groove 70 of the new bridge 10 are arranged in one-to-one correspondence with the anchor bars 4011 in the groove 70 of the existing bridge 20.
In this embodiment, the anchor bars 4011 are inserted in the grooves 70, and the anchor bars 4011 are connected with the hollow slab 101 in a bar-planting manner. Specifically, set up drilling along first direction 80 in the bottom of slot 70, wherein, drilling is the blind hole, then will drill and clean, and the drilling is clean to be accomplished the back and pours into the bar planting and glue into the drilling, then inserts first connecting portion 4013 and pours into the drilling that the bar planting glued in, first connecting portion 4013 and hollow core plate 101 fixed connection after the bar planting glue solidification.
It should be noted that the connection manner between the second connection portion 4014 and the hollow slab 101 is substantially the same as the connection manner between the first connection portion 4013 and the hollow slab 101, and details of the connection manner between the second connection portion 4014 and the hollow slab 101 are omitted here.
The anchoring depth range of the anchor bars 4011 is 1cm to 4cm, and in this embodiment, the anchoring depth of the anchor bars 4011 is 2 cm.
S1022, three steel bars 402 penetrate through each group of anchor bars 4011, the steel bars 402 penetrate through the grooves 70, and the steel bars 402 are bound with the anchor bars 4011; by providing three reinforcing bars 402, the firmness of the connection of the new bridge 10 to the existing bridge 20 is further improved.
Specifically, three reinforcing bar 402 all extends along the length direction of new bridge 10, and three reinforcing bar 402 sets up around accommodation space 4015's circumference interval, and reinforcing bar 402's periphery wall and accommodation space 4015's inner wall butt, and reinforcing bar 402 adopts the mode of ligature to be connected with anchor bar 4011.
And S1023, welding angle steel 4012 on one side, facing the connecting seam 30, of each anchor bar 4011.
Specifically, the angle steel 4012 is connected with the anchor bar 4011 in a double-sided welding manner.
In this embodiment, the top surfaces of the angle steels 4012 and the bridge deck of the new bridge 10 or the existing bridge 20 are located on the same plane; thus, the smoothness of the deck of the widened bridge 1 is ensured.
Wherein the top surfaces of the angle steel 4012 in the trench 70 of the new bridge 10 and the angle steel 4012 in the trench 70 of the existing bridge 20 are in the same plane.
After all the angle steels 4012 in each groove 70 are welded, a rust-proof layer is coated on the top surface of each angle steel 4012; therefore, the rust of the angle steel 4012 is avoided, and the service life of the angle steel 4012 is prolonged.
Specifically, the top surface of each angle steel 4012 is exposed outside, and in order to avoid rusting of the angle steel 4012, an anti-rust layer is coated on the top surface of the angle steel 4012. The rust-preventive layer is formed by coating black rust-preventive paint, but it is needless to say that the rust-preventive layer may be formed by coating other paint as long as rust is prevented.
And S103, pouring steel fiber concrete 50 into each groove 70.
The non-rigid connecting joint 30 which is formed by matching the steel fiber concrete 50 and the angle steel 4012 is adopted for treatment, the steel fiber concrete 50 has high tensile, bending, shearing, torsion and impact resistance, the external impact resistance of the connecting joint 30 can be improved, the angle steel 4012 further protects the steel fiber concrete 50 from being damaged, and the service life of the connecting joint 30 is prolonged.
Specifically, the angle steel 4012 is required to be prevented from moving in the process of pouring the steel fiber concrete 50, and after the pouring of the steel fiber concrete 50 is completed, the steel fiber concrete 50 is covered by tarpaulin or plastic cloth, and the watering and curing time is over 7 days.
For example, the steel fiber concrete 50 may be C50 steel fiber concrete 50, and of course, the steel fiber concrete 50 may be other types of steel fiber concrete 50 as long as the external impact resistance of the joint 30 is improved.
Further, in this embodiment, after installing the reinforcing member 40 in each trench 70, before pouring the steel fiber reinforced concrete 50 into each trench 70, the method further includes: the impurities in each groove 70 are removed using an air machine.
Specifically, an air compressor is used to remove dust and waste residues in each groove 70.
S104, filling the asphalt horseshoe grease 60 into the connecting seam 30 after the steel fiber concrete 50 reaches the preset strength.
The connecting joints 30 are filled with the asphalt horseshoe grease 60, the asphalt horseshoe grease 60 is a cementing material with high cohesive force formed by mineral powder and asphalt, and can effectively absorb deformation caused by shrinkage and creep of concrete of the prefabricated hollow slab 101 by being bonded with the prefabricated hollow slab 101 in the new bridge 10 and the prefabricated hollow slab 101 in the existing bridge 20, so that diseases caused by expansion and contraction due to heat and difference of new and old foundation settlement between the prefabricated hollow slab 101 in the new bridge 10 and the prefabricated hollow slab 101 in the existing bridge 20 to the connecting joints 30 are avoided, meanwhile, the asphalt horseshoe grease 60 plays a role in water proofing and shock absorption, and connection between the prefabricated hollow slab 101 in the new bridge 10 and the prefabricated hollow slab 101 in the existing bridge 20 is effectively solved. Specifically, after the strength of the steel fiber concrete 50 reaches 95%, the garbage in the connecting seam 30 is removed, and the connecting seam 30 is filled with the asphalt horseshoe grease 60.
According to the connection construction method for the widened bridge joints, the widened bridge 1 comprises a new bridge 10 and an existing bridge 20, a connecting seam 30 is arranged between the new bridge 10 and the existing bridge 20, and the bridge deck of the new bridge 10 and the bridge deck of the existing bridge 20 are located on the same plane; the connection construction method comprises the following steps: grooves 70 are chiseled on one sides of the new bridge 10 and the existing bridge 20 facing the connecting joints 30; installing a reinforcement assembly 40 in each channel 70; pouring steel fiber concrete 50 into each groove 70; after the steel fiber concrete 50 reaches the preset strength, filling the connecting seam 30 with the asphalt horseshoe grease 60; on one hand, the steel fiber concrete 50 is adopted, and the asphalt horseshoe grease 60 is filled in the connecting seams 30, so that the integrity of the widened bridge 1 is improved; meanwhile, the driving safety is improved; on the other hand, the method has simple construction, short construction period and low cost.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (10)
1. A connection construction method for a widened bridge joint is characterized by comprising the following steps: the widened bridge comprises a new bridge and an existing bridge, a connecting seam is arranged between the new bridge and the existing bridge, and the bridge deck of the new bridge and the bridge deck of the existing bridge are located on the same plane;
the connection construction method comprises the following steps:
grooves are chiseled on one sides of the new bridge and the existing bridge facing the connecting joints;
installing a reinforcement assembly in each of the channels;
pouring steel fiber concrete into each groove;
and after the steel fiber concrete reaches the preset strength, filling asphalt horseshoe grease into the connecting joint.
2. The connection construction method for the widened bridge connection part according to claim 1, characterized in that: before the new bridge with the current bridge orientation one side of connecting seam all is dug and is equipped with the slot, still include:
and dismantling the railings of the existing bridge.
3. The connection construction method for the widened bridge connection part according to claim 1, characterized in that: the reinforcing component comprises a plurality of fixing components and at least one reinforcing steel bar;
a plurality of fixed subassembly is along the extending direction interval of slot sets up, the one end of reinforcing bar passes in proper order a plurality ofly fixed subassembly, the reinforcing bar with fixed subassembly is connected.
4. The widened bridge joint connection construction method according to claim 3, characterized in that: the fixed subassembly includes anchor bar and angle steel, the anchor bar encloses and establishes into the accommodation space, the angle steel set up in the anchor bar orientation on the outer wall of one side of joint line, the inner wall of angle steel with the wall connection of anchor bar.
5. The widened bridge joint connection construction method according to claim 4, characterized in that: said installing a reinforcement assembly within each of said channels comprising:
a group of anchor bars are arranged in each groove along the extending direction of the groove;
three reinforcing steel bars penetrate through each group of anchor bars, the reinforcing steel bars penetrate through the grooves, and the reinforcing steel bars are bound with the anchor bars;
and welding the angle steel on one side of each anchor bar facing the connecting seam.
6. The widened bridge joint connection construction method according to claim 5, characterized in that: the top surfaces of the angle steels and the bridge deck of the new bridge or the existing bridge are located on the same plane.
7. The widened bridge joint connection construction method according to claim 5, characterized in that: and coating a rust-proof layer on the top surface of each angle steel.
8. The connection construction method for the widened bridge connection part according to claim 1, characterized in that: after the reinforcing component is installed in each groove and before the steel fiber concrete is poured into each groove, the method further comprises the following steps:
and removing impurities in each groove by using an air machine.
9. The widened bridge joint connection construction method according to claim 4, characterized in that: the anchor bar is the pentagon frame, the anchor bar deviates from one side of angle steel is provided with first connecting portion and second connecting portion, first connecting portion along the outside extension of the first direction of new bridge, the second connecting portion along the outside extension of the second direction of new bridge.
10. The connection construction method for the widened bridge connection part according to claim 1, characterized in that: the width range of the groove is as follows: 20cm-30cm, the height range of the groove is as follows: 14cm-24 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111222133.XA CN113981838A (en) | 2021-10-20 | 2021-10-20 | Connection construction method for widened bridge joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111222133.XA CN113981838A (en) | 2021-10-20 | 2021-10-20 | Connection construction method for widened bridge joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113981838A true CN113981838A (en) | 2022-01-28 |
Family
ID=79739634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111222133.XA Pending CN113981838A (en) | 2021-10-20 | 2021-10-20 | Connection construction method for widened bridge joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113981838A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115450146A (en) * | 2022-09-30 | 2022-12-09 | 中铁二十局集团第一工程有限公司 | Bridge widening method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1416593A1 (en) * | 1986-04-04 | 1988-08-15 | Сибирский автомобильно-дорожный институт им.В.В.Куйбышева | Method of reinforcing and expanding ferroconcrete-steel bridge span structure |
| CN102094388A (en) * | 2011-02-25 | 2011-06-15 | 大连市市政设计研究院有限责任公司 | Method for constructing settlement joint of bridge |
| CN107700345A (en) * | 2017-10-17 | 2018-02-16 | 青海省高等级公路建设管理局 | A kind of wet seam anticorrosion construction method of steel-concrete combination beam and purposes |
| CN213173346U (en) * | 2020-07-17 | 2021-05-11 | 上海市城市建设设计研究总院（集团）有限公司 | Integral bridge continuous seam structure |
-
2021
- 2021-10-20 CN CN202111222133.XA patent/CN113981838A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1416593A1 (en) * | 1986-04-04 | 1988-08-15 | Сибирский автомобильно-дорожный институт им.В.В.Куйбышева | Method of reinforcing and expanding ferroconcrete-steel bridge span structure |
| CN102094388A (en) * | 2011-02-25 | 2011-06-15 | 大连市市政设计研究院有限责任公司 | Method for constructing settlement joint of bridge |
| CN107700345A (en) * | 2017-10-17 | 2018-02-16 | 青海省高等级公路建设管理局 | A kind of wet seam anticorrosion construction method of steel-concrete combination beam and purposes |
| CN213173346U (en) * | 2020-07-17 | 2021-05-11 | 上海市城市建设设计研究总院（集团）有限公司 | Integral bridge continuous seam structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115450146A (en) * | 2022-09-30 | 2022-12-09 | 中铁二十局集团第一工程有限公司 | Bridge widening method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6316665B2 (en) | Composite structure of steel girder and precast slab and its construction method | |
| CN111270606B (en) | Connecting structure of assembled steel bridge floor concrete anti-collision guardrail and complete construction method thereof | |
| JP6097965B2 (en) | Construction method of concrete precast slab for bridge | |
| CN108867480B (en) | Steel plate connection prefabricated FRP rib concrete side anti-collision guardrail | |
| CN111485471B (en) | Wet joint structure suitable for fabricated pavement and construction method | |
| CN109648696B (en) | Steel bar connected side slope prefabricated lattice beam and manufacturing method and construction method thereof | |
| CN108867690B (en) | Reverse construction method for pile plate retaining wall of large foundation pit | |
| CN111042010A (en) | T-beam bridge widening structure and construction method | |
| CN110747754A (en) | Shear-resisting reinforcing method for oblique section of wide hollow slab | |
| CN113981838A (en) | Connection construction method for widened bridge joint | |
| CN110106772B (en) | Road cold-bending U-shaped combined beam bridge and construction method thereof | |
| US6416693B1 (en) | Method of strengthening an existing reinforced concrete member | |
| KR100535157B1 (en) | Structures and Methods for Connection between Precast Decks and Prestressed Concrete Girders | |
| CN110552706A (en) | Permanent-temporary combined shield hoisting hole sealing structure and method | |
| JP6811678B2 (en) | Method of joining concrete structures and concrete members to which continuous fiber reinforced concrete is applied | |
| CA2892704C (en) | Reinforced blockwork construction method | |
| CN113502835A (en) | Wet cellular assembled gridwork roof beam slope protection structure of connecting | |
| CN110468708B (en) | Combined bridge deck structure of steel-UHPC precast slab and construction method thereof | |
| CN105507110A (en) | Reinforcing structure and method for damaged concrete pavement panel | |
| JP2007262881A (en) | High strength reinforced concrete precast slab | |
| KR20040105940A (en) | Structures and Methods for Connection between Precast Decks and Prestressed Concrete Girders | |
| CN113374171B (en) | Recycled block concrete prefabricated assembled ring beam structure and construction method thereof | |
| CN213804892U (en) | Precast concrete bridge structures based on hollow core slab | |
| CN114753386A (en) | Triangular arrangement assembly type lattice beam slope protection structure and construction method thereof | |
| CN111321673A (en) | Bridge cylindrical pier template, assembling method and construction method of bridge cylindrical pier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220128 |
|
| RJ01 | Rejection of invention patent application after publication |