CN114164747B - New and old structure cooperative stress structure for bridge widening - Google Patents
New and old structure cooperative stress structure for bridge widening Download PDFInfo
- Publication number
- CN114164747B CN114164747B CN202111573020.4A CN202111573020A CN114164747B CN 114164747 B CN114164747 B CN 114164747B CN 202111573020 A CN202111573020 A CN 202111573020A CN 114164747 B CN114164747 B CN 114164747B
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- 230000035939 shock Effects 0.000 claims description 28
- 210000002435 tendon Anatomy 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 12
- 238000013016 damping Methods 0.000 claims description 11
- 239000004575 stone Substances 0.000 claims description 11
- 239000010426 asphalt Substances 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 claims description 5
- 230000002349 favourable effect Effects 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 238000010030 laminating Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 206010023230 Joint stiffness Diseases 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of 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
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/041—Elastomeric bearings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/083—Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a cooperative stress structure of a new structure and an old structure for splicing a bridge, which comprises a bearing piece, a connecting piece and a fixing piece, wherein one end of the bearing piece is connected with a beam body of a newly built bridge, the other end of the bearing piece is close to the root of a cantilever arm of the built bridge, and a first through hole is formed in one end of the bearing piece close to the built bridge; the connecting piece penetrates through the first through hole on the supporting piece and the second through hole correspondingly arranged on the cantilever arm of the established bridge; the fixing piece is used for fixing the two ends of the connecting piece on the supporting piece and the cantilever arm of the established bridge respectively. Through the structure, the newly-built bridge and the established bridge are structurally connected, so that the newly-built bridge and the established bridge are stressed cooperatively, the overall performance is good, the travelling comfort is high, meanwhile, the damage to the established bridge caused by a large number of planted bars in the traditional connection mode of the newly-built bridge and the established bridge is avoided, and the bearing capacity and durability of the established bridge are ensured.
Description
Technical Field
The invention relates to the technical field of bridge engineering, in particular to a new and old structure cooperative stress structure for bridge widening.
Background
The wide bridge is a bridge which is built in a transverse stage or newly built in a splicing widening mode in the transverse direction of the original bridge, and finally the whole bridge deck is formed. The splicing mode commonly adopted by the upper structure of the spliced wide bridge is divided into two main types of structure unconnected and structure connected. When the structure is not connected, the stress is definite, the construction has little influence on the traffic of the established bridge, the cost is low, but the bridge has poor integrity, the later maintenance workload is large, and the comfort is poor. At present, most of the existing bridge adopts the form of connection of an upper structure, so that the upper structure is stressed integrally, the comfort is good, the bridge deck has good waterproof property, but when the upper structure is connected in the prior art, a large number of bars are required to be planted on the established bridge, the bars are easy to collide with a pre-stressed beam and a main bar of the established bridge, the established bridge is seriously damaged, and the bearing capacity and durability of the established bridge are affected.
Disclosure of Invention
The invention aims to solve the technical problem that when the prior spliced wide bridge adopts an upper structure for connection, excessive planted ribs are easy to collide with a pre-stress beam and a main reinforcing steel bar of the established bridge, the established bridge is seriously damaged, the bearing capacity and the durability of the established bridge are affected, and the novel and old structure collaborative stress structure for splicing the wide bridge is provided.
The invention solves the technical problems by the following technical proposal:
the invention provides a cooperative stress structure of a new structure and an old structure for splicing a bridge, which comprises a bearing piece, a connecting piece and a fixing piece, wherein one end of the bearing piece is connected with a beam body of a newly built bridge, the other end of the bearing piece is close to the root of a cantilever arm of the built bridge, and a first through hole is formed in one end of the bearing piece, which is close to the built bridge; the connecting piece penetrates through the first through hole on the supporting piece and the second through hole correspondingly arranged on the cantilever arm of the established bridge; the fixing piece is used for fixing the two ends of the connecting piece on the supporting piece and the cantilever arm of the established bridge respectively.
In this scheme, the support piece is connected with the roof beam body of newly-built bridge, for the structural connection of newly-built bridge and built bridge provides the support, the connecting piece passes support piece and built bridge, connect support piece and built bridge, and fix through the mounting, guarantee the stability of connection, through above-mentioned structure, newly-built bridge and built bridge have realized structural connection, make newly-built bridge and built bridge atress in coordination, wholeness is good, driving travelling comfort is higher, the damage that adopts a large amount of planting muscle to the built bridge to cause in having avoided traditional newly-built bridge and the connection mode of built bridge simultaneously, the bearing capacity and the durability of built bridge have been guaranteed.
Preferably, the cooperative stress structure of the new and old structures for the bridge widening further comprises a damping piece, wherein the damping piece is arranged between the supporting piece and the cantilever arm of the established bridge, and the damping piece is used for buffering load impact transmitted from the upper part of the established bridge.
In this scheme, the shock attenuation piece is used for buffering the load impact that established bridge upper portion transmitted, and then has slowed down the load impact that the bearing piece received, has improved the travelling comfort of the stability and the driving of connection simultaneously.
Preferably, a third through hole is formed in the center of the shock absorbing member, the first through hole, the second through hole and the third through hole are coaxially and correspondingly formed, and the connecting member penetrates through the first through hole, the second through hole and the third through hole.
In this scheme, cantilever arm, shock-absorbing member and the bearing piece coaxial setting of established bridge correspond second through-hole, third through-hole and first through-hole for pass the connecting piece for connect closely, wholeness can be good.
Preferably, the first through holes and the second through holes are arranged in a plurality of one-to-one correspondence, the connecting pieces penetrate through the first through holes and the corresponding second through holes respectively, and the shock absorbing pieces are surrounded by the connecting pieces.
In this scheme, the connecting piece does not pass the shock attenuation piece, but sets up around the shock attenuation, surrounds the shock attenuation piece, has avoided the slippage of shock attenuation piece, and the stability of connection has been improved in the setting of a plurality of connecting pieces simultaneously.
Preferably, a wedge-shaped cushion stone is arranged between the shock absorbing piece and the cantilever arm of the established bridge, and the wedge-shaped cushion stone is attached to the shock absorbing piece and the cantilever arm of the established bridge.
In this scheme, because the arm downside of encorbelmenting of established bridge is the inclined plane generally, and the laminating with the shock attenuation piece is inseparable inadequately, is provided with the wedge filler between the arm of encorbelmenting of shock attenuation piece and established bridge, and the inclined plane one side of wedge filler is laminated with the arm downside of encorbelmenting of established bridge, and the horizontal plane one side of wedge filler is laminated with the shock attenuation piece, has guaranteed the compactness of connection.
Preferably, the shock absorbing member is a rubber bearing.
In the scheme, the rubber support is simple in structure and low in cost, has certain rotation and displacement functions, and is excellent in vibration reduction effect.
Preferably, the position of the built bridge for installing the fixing piece is provided with an installation chamber, and the installation chamber is filled with concrete.
In this scheme, offer the installation of being convenient for the connecting piece pass and mounting of mounting in the installation room, fill the concrete after waiting to install, resume the planarization on road surface.
Preferably, the supporting piece is a bracket, and the root of the bracket is welded or connected with the beam body of the newly-built bridge through bolts.
In this scheme, bracket simple structure can prefabricate production, but the assembly performance is good, effectively improves construction speed.
Preferably, a wedge-shaped backing plate is arranged between the bracket and the fixing piece, and one horizontal side of the wedge-shaped backing plate is perpendicular to the connecting piece.
In this scheme, because the downside of bracket is the inclined plane generally, and the laminating with the mounting is inseparable inadequately, sets up the wedge backing plate between bracket and mounting, the inclined plane one side of wedge backing plate is laminated with the downside of bracket, and the horizontal plane one side of wedge backing plate is laminated with the mounting, has guaranteed the compactness of connection.
Preferably, the connecting piece is a prestressed tendon, and the fixing piece is an anchor.
In the scheme, the prestress rib generates prestress through tensioning and has a certain self-resetting function, so that the connection between a newly-built bridge and an established bridge is firmer, and meanwhile, the prestress rib buffers load impact to a certain extent, thereby being beneficial to driving comfort.
Preferably, a sleeve is arranged on the outer side of the prestressed reinforcement, and the sleeve penetrates through the first through hole and the second through hole.
In this scheme, first through-hole and inside sleeve pipe that passes earlier of second through-hole, conveniently pass the prestressing tendons afterwards, the sleeve pipe is used for protecting the prestressing tendons simultaneously, avoids the corrosion of prestressing tendons, is favorable to improving the durability of prestressing tendons.
Preferably, the new and old structure collaborative stress structure for bridge widening further comprises a bridge deck pavement connecting part, wherein the bridge deck pavement connecting part is arranged above the newly-built bridge and the cantilever end part of the bridge body of the established bridge.
In this scheme, bridge deck pavement connecting portion will establish bridge and the bridge deck pavement of established bridge and connect for bridge floor integration is favorable to the travelling comfort of driving.
Preferably, the bridge deck pavement connection part is divided into two layers, wherein the upper layer is an asphalt layer, and the lower layer is a concrete cushion layer.
In this scheme, the upper strata is the asphalt layer, and waterproof performance is good, is favorable to the durability of bridge, and the lower floor is concrete cushion, and deformability is strong.
Preferably, steel bars are arranged in the concrete cushion layer, and the steel bars are respectively implanted into bridge deck pavement layers of the newly-built bridge and the established bridge.
In this scheme, establish the reinforcing bar in the concrete cushion, the reinforcing bar is continuous between new bridge and old bridge for there is the transmission of power also between new bridge and old bridge, has increased bridge deck pavement's wholeness, is favorable to driving comfortablely.
The invention has the positive progress effects that:
the bearing piece is connected with the beam body of the newly-built bridge, supports are provided for structural connection of the newly-built bridge and the built bridge, the connecting piece penetrates through the bearing piece and the built bridge, the bearing piece and the built bridge are connected and fixed through the fixing piece, and the stability of connection is guaranteed.
Drawings
FIG. 1 is an overall block diagram of a preferred embodiment of the present invention.
Fig. 2 is a partial enlarged view of the portion a in fig. 1.
Reference numerals illustrate:
built bridge 1
Second through hole 11
Installation room 12
New bridge 2
Support 3
First through hole 31
Connecting piece 4
Fixing piece 5
Damping member 6
Third through hole 61
Wedge-shaped packing stone 7
Plane pad 81
Wedge-shaped backing plate 82
Sleeve 9
Bridge deck pavement joint 10
Asphalt layer 101
Concrete cushion 102
Detailed Description
The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention.
As shown in fig. 1 and 2, the present embodiment provides a collaborative stress structure for a new and old bridge widening structure, which includes a supporting member 3, a connecting member 4 and a fixing member 5, wherein one end of the supporting member 3 is connected with a beam body of a newly built bridge 2, the other end of the supporting member is close to a root of a cantilever arm of the built bridge 1, and one end of the supporting member 3 close to the built bridge 1 is provided with a first through hole 31; the connecting piece 4 penetrates through a first through hole 31 on the supporting piece 3 and a second through hole 11 correspondingly arranged on the cantilever arm of the established bridge 1; the fixing piece 5 is used for fixing the two ends of the connecting piece 4 on the supporting piece 3 and the cantilever arm of the established bridge 1 respectively.
In this embodiment, the bearing member 3 is connected with the beam body of the newly-built bridge 2, so as to provide support for the structural connection of the newly-built bridge 2 and the built bridge 1, the connecting member 4 passes through the bearing member 3 and the built bridge 1, connects the bearing member 3 and the built bridge 1, and fixes the bearing member 3 and the built bridge 1 through the fixing member 5, so as to ensure the stability of connection, and through the structure, the newly-built bridge 2 and the built bridge 1 realize structural connection, so that the newly-built bridge 2 and the built bridge 1 are stressed cooperatively, the overall performance is good, the travelling comfort is higher, and meanwhile, the damage to the built bridge 1 caused by adopting a large number of planted bars in the traditional connection mode of the newly-built bridge 2 and the built bridge 1 is avoided, and the bearing capacity and durability of the built bridge 1 are ensured.
In this embodiment, a new and old structure cooperation atress structure for bridge piece together still includes damping part 6, and damping part 6 sets up between the cantilever arm of bearing part 3 and established bridge 1, and damping part 6 is used for buffering the load impact that established bridge 1 upper portion transmitted, and then has slowed down the load impact that bearing part 3 received, has improved the stability of connection and the travelling comfort of driving.
In this embodiment, the damper 6 is provided with a third through hole 61 at a central position, and the first through hole 31, the second through hole 11 and the third through hole 61 are coaxially and correspondingly arranged, and the connecting member 4 penetrates the first through hole 31, the second through hole 11 and the third through hole 61. The cantilever arm, the damping piece 6 and the bearing piece 3 of the built bridge 1 are coaxially provided with a corresponding second through hole 11, a third through hole 61 and a first through hole 31, and are used for penetrating through the connecting piece 4, so that the connection is tight, and the overall performance is good.
In other embodiments, the first through holes 31 and the second through holes 11 may be provided in plural and one-to-one correspondence, and the plurality of connection members 4 penetrate through the first through holes 31 and the corresponding second through holes 11, respectively, and the plurality of connection members 4 surround the shock absorbing member 6. The connecting piece 4 does not pass through the shock absorbing piece 6, but is arranged around the shock absorbing piece, so that the shock absorbing piece 6 is surrounded, the slipping of the shock absorbing piece 6 is avoided, and meanwhile, the stability of connection is improved due to the arrangement of the plurality of connecting pieces 4.
In this embodiment, a wedge-shaped cushion stone 7 is disposed between the shock absorbing member 6 and the cantilever arm of the bridge 1, and the wedge-shaped cushion stone 7 is attached to the shock absorbing member 6 and the cantilever arm of the bridge 1. Because the cantilever arm downside of the established bridge 1 is generally an inclined plane, the joint with the shock absorbing piece 6 is not tight enough, a wedge-shaped cushion stone 7 is arranged between the shock absorbing piece 6 and the cantilever arm of the established bridge 1, one side of the inclined plane of the wedge-shaped cushion stone 7 is jointed with the cantilever arm downside of the established bridge 1, one side of the horizontal plane of the wedge-shaped cushion stone 7 is jointed with the shock absorbing piece 6, and the joint tightness is ensured.
In this embodiment, the shock absorbing member 6 is a rubber mount. The rubber support has simple structure and low cost, has certain rotation and displacement functions and has excellent vibration damping effect.
In this embodiment, the installation room 12 is provided at the position where the fixing member 5 is installed in the bridge 1, and the installation room 12 is filled with concrete. The installation room 12 is provided with a connecting piece 4 which is convenient to penetrate through and the fixing piece 5 to be installed, concrete is filled after the installation is completed, and the flatness of the road surface is restored.
In this embodiment, the supporting member 3 is a bracket, and the root of the bracket is welded or bolted to the beam body of the newly-built bridge 2. The bracket has simple structure, can be prefabricated for production, has good assembly performance and effectively improves the construction speed.
In this embodiment, a planar pad 81 is disposed between the bridge 1 and the fixing member 5, a wedge-shaped pad 82 is disposed between the bracket and the fixing member 5, and a horizontal side of the wedge-shaped pad 82 is perpendicular to the connecting member 4. Because the downside of bracket is generally the inclined plane, and the laminating with mounting 5 is inseparable inadequately, sets up wedge backing plate 82 between bracket and mounting 5, wedge backing plate 82's inclined plane one side and bracket's downside laminating, wedge backing plate 82's horizontal plane one side and mounting 5 laminating, has guaranteed the compactness of connection.
In this embodiment, the connecting member 4 is a tendon, and the fixing member 5 is an anchor. The prestressing tendons generate prestressing force through stretching and draw, and have certain self-resetting effect for newly-built bridge 2 and established bridge 1's connection is more firm, and prestressing force buffering load impact to a certain extent is favorable to driving comfort simultaneously.
In this embodiment, the outer side of the tendon is provided with a sleeve 9, and the sleeve 9 penetrates through the first through hole 31 and the second through hole 11. The sleeve 9 is penetrated in the first through hole 31 and the second through hole 11, so that the prestressed tendons are penetrated after the prestressed tendons are convenient, and meanwhile, the sleeve 9 is used for protecting the prestressed tendons, so that the rusting of the prestressed tendons is avoided, and the durability of the prestressed tendons is improved.
In this embodiment, the new and old structures for bridge widening cooperate with the stressed structure further comprises a bridge deck pavement connecting portion 10, wherein the bridge deck pavement connecting portion 10 is arranged above the beam body cantilever arm end portions of the newly-built bridge 2 and the built bridge 1. Bridge deck pavement connecting portion 10 connects newly-built bridge 2 and bridge deck pavement of established bridge 1 for bridge deck integration is favorable to driving travelling comfort.
In this embodiment, the bridge deck pavement joint 10 is divided into two layers, the upper layer is an asphalt layer 101, and the lower layer is a concrete cushion layer 102. The upper layer is the asphalt layer 101, and waterproof performance is good, is favorable to the durability of bridge, and the lower layer is the concrete cushion layer 102, and the deformability is strong.
In this embodiment, the concrete cushion 102 is internally provided with reinforcing bars, and the reinforcing bars are respectively implanted into the bridge deck pavement layers of the newly-built bridge 2 and the built bridge 1. The concrete cushion 102 is internally provided with the steel bars, and the steel bars are continuous between the new bridge and the old bridge, so that force transmission exists between the new bridge and the old bridge, the integrity of bridge deck pavement is improved, and driving comfort is facilitated.
The specific construction method of the embodiment is as follows:
the first step: and closing the traffic of adjacent lanes at the construction positions of the established bridge 1 and the newly-built bridge 2.
And a second step of: the bracket is provided with a first through hole 31, the cantilever arm of the established bridge 1 is provided with a mounting chamber 12 and a second through hole 11, and the rubber support is provided with a third through hole 61.
And a third step of: and (3) installing brackets on the beam body of the newly built bridge 2, and placing a rubber support on one end, close to the built bridge 1, of the brackets.
Fourth step: wedge-shaped cushion stones 7 are arranged between the cantilever arms and the rubber supports of the established bridge 1.
Fifth step: and (3) penetrating the prestressed tendons through the cantilever arms, the rubber supports and the corbels of the built bridge 1, tensioning the prestressed tendons and anchoring the prestressed tendons.
Sixth step: the installation chamber 12 is filled with concrete.
Seventh step: construction of the bridge deck pavement joint 10 is performed.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (7)
1. A new and old structure cooperative stress structure for bridge widening, comprising:
one end of the supporting piece is connected with the beam body of the newly-built bridge, the other end of the supporting piece is close to the root of the cantilever arm of the built bridge, and a first through hole is formed in one end of the supporting piece close to the built bridge;
the connecting piece penetrates through the first through hole on the supporting piece and the second through hole correspondingly arranged on the cantilever arm of the established bridge;
the fixing piece is used for fixing the two ends of the connecting piece on the supporting piece and the cantilever arm of the established bridge respectively;
the damping piece is arranged between the bearing piece and the cantilever arm of the established bridge and is used for buffering load impact transmitted from the upper part of the established bridge;
the bridge deck pavement connecting part is arranged above the beam body cantilever end parts of the newly-built bridge and the built bridge;
the center of the damping piece is provided with a third through hole, the first through hole, the second through hole and the third through hole are coaxially and correspondingly arranged, and the connecting piece penetrates through the first through hole, the second through hole and the third through hole;
the first through holes and the second through holes are arranged in a plurality of one-to-one correspondence, the connecting pieces penetrate through the first through holes and the corresponding second through holes respectively, and the shock absorbing pieces are surrounded by the connecting pieces;
a wedge-shaped cushion stone is arranged between the shock absorbing piece and the cantilever arm of the established bridge, and the wedge-shaped cushion stone is attached to the shock absorbing piece and the cantilever arm of the established bridge;
the position of the built bridge for installing the fixing piece is provided with an installation chamber, and the installation chamber is filled with concrete;
the connecting piece is a prestressed tendon, and the fixing piece is an anchor.
2. The cooperative stressed structure of a new and old structure for bridge widening according to claim 1, wherein the shock absorbing member is a rubber support.
3. The cooperative stressed structure for a new and old bridge widening according to claim 1, wherein the supporting member is a bracket, and the root of the bracket is welded or bolted with the beam body of the new bridge.
4. The cooperative stressed structure for the bridge widening according to claim 3, wherein a wedge-shaped base plate is arranged between the bracket and the fixing piece, and the horizontal side of the wedge-shaped base plate is perpendicular to the connecting piece.
5. The cooperative stressed structure of a new and old structure for bridge widening according to claim 1, wherein a sleeve is arranged outside the prestressed tendon, and penetrates through the first through hole and the second through hole.
6. The cooperative stressed structure of a new and old structure for widening a bridge according to claim 1, wherein the bridge deck pavement connecting part is divided into two layers, the upper layer is an asphalt layer, and the lower layer is a concrete cushion layer.
7. The cooperative stressed structure of a new and old structure for widening a bridge according to claim 6, wherein the concrete cushion layer is internally provided with reinforcing bars, and the reinforcing bars are respectively implanted into deck pavement layers of the new bridge and the established bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111573020.4A CN114164747B (en) | 2021-12-21 | 2021-12-21 | New and old structure cooperative stress structure for bridge widening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111573020.4A CN114164747B (en) | 2021-12-21 | 2021-12-21 | New and old structure cooperative stress structure for bridge widening |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114164747A CN114164747A (en) | 2022-03-11 |
| CN114164747B true CN114164747B (en) | 2023-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111573020.4A Active CN114164747B (en) | 2021-12-21 | 2021-12-21 | New and old structure cooperative stress structure for bridge widening |
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| CN (1) | CN114164747B (en) |
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| CN114164747A (en) | 2022-03-11 |
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