CN110735390A - Support assembly for preventing and treating bump at bridge head and construction method thereof - Google Patents
Support assembly for preventing and treating bump at bridge head and construction method thereof Download PDFInfo
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- CN110735390A CN110735390A CN201911116708.2A CN201911116708A CN110735390A CN 110735390 A CN110735390 A CN 110735390A CN 201911116708 A CN201911116708 A CN 201911116708A CN 110735390 A CN110735390 A CN 110735390A
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- 230000007704 transition Effects 0.000 claims abstract description 36
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- 238000010586 diagram Methods 0.000 description 3
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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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/16—Foundations formed of separate piles
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Abstract
The invention discloses a support assembly for preventing and treating bump at bridge head and a construction method thereof, wherein the support assembly is arranged on a transition section between a bridge deck section and a road deck section, the transition section comprises a road surface, a roadbed and a foundation from top to bottom, the support assembly comprises a butt strap, at least two layers of reinforcing members and a plurality of rigid piles, the at least two layers of reinforcing members are arranged in the roadbed at intervals, a rigid pile is embedded in the foundation, the heights of the plurality of rigid piles are sequentially shortened from the bridge deck section to the road deck section, the end of the butt strap is connected below the bridge deck section, the end of the butt strap is connected to the top end of a rigid pile close to the bridge deck section, and through the cooperation of the butt strap, the rigid pile and the roadbed provided with the reinforcing members, the bearing capacity of the foundation and the roadbed can be effectively improved, the restraining capacity of the foundation and the roadbed soil can be enhanced, the settlement transition effect can be enhanced, so that the uneven settlement of the transition section is reduced.
Description
Technical Field
The invention relates to the technical field of geotechnical engineering, in particular to support components for preventing and treating vehicle bump at bridge head and a construction method thereof.
Background
The method is characterized in that with the rapid development of the transportation industry, the tonnage of vehicles and the density of traffic flow increase rapidly, the traditional bridge is damaged seriously, and a spliced section of a highway and a bridge has fixed problems, wherein it is common that differential settlement exists at the joint of abutment structures and filled earth behind the abutment structures, so that steps or obvious longitudinal slope changes are formed on the road surface, and vehicles running at high speed generate bumping and jumping when passing, thereby generating a bridge head bumping phenomenon.
At present, problems are still solved for the problem of vehicle jump at the bridge head of a highway, the two main reasons are that foundation soil is soft and settlement amount is large, and compression deformation is easy to generate due to the effect of self weight and load of a roadbed, the two reasons cause excessive post-construction settlement, a bridge generally adopts a pile foundation and has small settlement amount, so that differential settlement is generated between a road and a bridge to cause the problem of vehicle jump at the bridge head.
Disclosure of Invention
The invention aims to overcome the defects that the cost is increased and the effect is poor in the structure and the method for jointly preventing and treating the bridge head bumping in the prior art, and provides supporting components for preventing and treating the bridge head bumping and a construction method thereof.
The invention solves the technical problems through the following technical scheme:
A supporting component for preventing and treating bump at bridge head, it sets up on the changeover portion between bridge floor section and road surface section, the changeover portion is from last to including road surface, road bed and ground down, its characterized in that, the supporting component includes:
at least two layers of reinforcing members arranged in the roadbed at intervals along the thickness direction of the roadbed;
a plurality of th rigid piles arranged at intervals and buried in the foundation, wherein the heights of the th rigid piles are sequentially shortened from the bridge deck section to the pavement section;
an end of the strap being connected below the deck section and the other end of the strap being connected to the top end of the th rigid pile adjacent the deck section.
In the scheme, a reinforcing member is arranged in a roadbed for reinforcing the strength of the roadbed to improve the bearing capacity of the roadbed, a th rigid pile is arranged in the roadbed below the roadbed for reinforcing the strength of the roadbed, the overall strength of a transition section can be reinforced by arranging the reinforcing member and a th rigid pile to improve the bearing capacity of the transition section, the height of a th rigid pile is gradually shortened from a end close to an abutment to an end far away from the abutment, the rigidity is gradually reduced by adopting the structural form, the settlement change is also gradually reduced, the larger settlement rate change is not easy to occur, the traveling is more stable and comfortable, the more obvious settlement of the transition section close to the abutment is, the more obvious rigidity difference is mainly between the transition section close to the abutment and the abutment, the different rigidity on the transition section is not obvious, therefore, the height of the th rigid pile close to an end of the abutment is higher than that of an end end far away from the abutment, the rigidity difference between the bridge deck transition section close to the abutment and the transition section is convenient to reduce the rigidity difference between the transition section and the transition section, the foundation settlement is effectively reduced, the foundation settlement of the foundation, the foundation is suitable for improving the foundation and the foundation.
Preferably, the bridge deck section comprises a bridge deck, a second rigid pile and an abutment between the bridge deck and the second rigid pile, a bearing platform is arranged at the upper end of the th rigid pile, and two ends of the butt strap are respectively arranged on the abutment and the bearing platform.
In this scheme, set up the both ends of attachment strap respectively on abutment and cushion cap, be favorable to improving the reinforcement effect of attachment strap, the rigidity of attachment strap and abutment and cushion cap is all stronger moreover, also is favorable to more reliable reduction difference to subside.
Preferably, the top of the end of the butt strap which is lapped on the bridge abutment is positioned below the bridge floor, and the top of the end of the butt strap which is lapped on the bearing platform is flush with the upper surface of the foundation.
In this scheme, the attachment strap adopts the slope to arrange, along the direction downward sloping of being close to the abutment to the direction of keeping away from the abutment, has played fixed effect in the aspect of the transition of just gentle, can effectively eliminate the foundation and subside the step difference that warp and form at the bridgehead, because the rigidity difference of attachment strap changeover portion and type highway section when avoiding only setting up the attachment strap, the secondary phenomenon of jumping that easily takes place in the junction.
Preferably, the butt strap is close to the tip of abutment with the back wall of abutment passes through the anchor bar and connects, the butt strap is close to the bottom surface of abutment with the bracket of abutment passes through the crab-bolt and connects.
Preferably, the upper edge of the end of the butt strap close to the abutment is provided with a -th chamfer, and a gap is reserved between the end face of the butt strap close to the abutment and the back wall surface.
In the scheme, a -th chamfer is arranged at the upper edge of the end of the butt strap close to the abutment, so that the damage to the road surface and the abutment structure caused by the rotation of the butt strap is prevented, and the driving comfort is prevented from being influenced, and a gap is reserved between the end surface of the butt strap close to the abutment and the back wall surface and is used for arranging a continuous expansion joint between the abutment and the butt strap so as to adjust the displacement and the connection between upper structures caused by vehicle load and bridge building materials, so that the driving speed, the comfort and the safety are ensured.
Preferably, the upper edge of the bracket is provided with a second chamfer.
In this scheme, set up the second chamfer on the upper edge of bracket for the strap that the slope was arranged is for face contact with the contact surface of bracket, with the stress on reduction bracket and the strap, improves supporting component's life-span.
Preferably, the pile position arrangement shape of the th rigid pile is a rectangle or a quincunx.
Preferably, the length of the butt strap is in the range of 3m-8 m.
In the scheme, the length of the butt strap is in direct proportion to the height of the abutment, the higher the abutment is, the longer the length of the butt strap is, for example, the length of the butt strap is 3m for open culverts, the length of the butt strap is 4m for channels, the length of the butt strap is between 4m and 5m for small bridges, and the length of the butt strap is between 6m and 8m for large bridges and extra large bridges.
Preferably, the reinforcement is a geogrid.
In this scheme, geogrid not only can reduce the quantity to rigid pile, saves the cost, can also realize less difference and subside, prevents the bridgehead and jump the car.
Preferably, the geogrid is anchored with the butt strap near the end of the bridge deck section, the geogrid extends out of the lowest rigid pile and towards the road surface section away from the end of the bridge deck section, the geogrid at the bottom layer is as wide as the roadbed, and the geogrid at the top layer is as wide as the top width of the filling layer.
In the scheme, the geogrid and the butt strap are anchored so that the geogrid and the butt strap are combined more reliably, differential settlement is reduced more reliably, and bumping at the bridge head is prevented, the lowest -th rigid pile extends from the end of the geogrid, which is far away from a bridge deck section, the laying length of the geogrid is ensured to be larger than the length of a pile processing section, the rigidity difference of a transition section can be eliminated, differential settlement of the transition section is reduced more reliably, and the phenomenon of secondary bumping is avoided.
Preferably, the plurality of layers of geogrids are parallel to each other, and the number of layers of the geogrids ranges from 2 to 3.
In this scheme, the multilayer geogrids are parallel to each other, are favorable to improving the homogeneity that geogrids strengthen the roadbed to be favorable to reducing the rigidity difference reliably, prevent the secondary and jump the car.
Preferably, each layer of the geogrid is formed by connecting a plurality of geogrids, and the geogrids are connected through a sewing method or a lapping method.
A construction method of a support assembly for preventing bump at bridge head, characterized in that the construction method is used for arranging the support assembly for preventing bump at bridge head on the transition section between the bridge deck section and the pavement section, and the construction method comprises the following steps:
s1, lifting a plurality of rigid piles, and inserting a plurality of rigid piles into the foundation;
s2, piling the th rigid pile;
s3: setting up the butt strap;
s4: laying at least two layers of the reinforcing parts, and backfilling the roadbed;
s5: and constructing the pavement.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The supporting component for preventing and treating the bump at the bridge head has the advantages that the butt strap and the rigid pile are combined with the reinforced roadbed in parallel to prevent and treat the bump at the bridge head at the bridge transition section, the bearing capacity of the foundation and the roadbed can be effectively improved, the constraint force between the foundation and the roadbed soil is enhanced, and the settlement transition effect is enhanced, so that the uneven settlement of the bridge transition section is reduced, the bump at the bridge head is effectively avoided, the cost is saved, the supporting component is economical and practical, correspondingly, the supporting component is arranged on the transition section, and the bump at the bridge head can be effectively avoided under the action of the supporting component.
Drawings
Fig. 1 is a schematic structural diagram of a support assembly for preventing and controlling bump at the bridge head according to a preferred embodiment of the present invention.
Fig. 2 is a schematic diagram of the distribution of pile positions of th rigid piles in the supporting assembly for preventing and controlling the bump at the bridge head of the preferred embodiment of the invention.
Fig. 3 is another distribution diagram of pile positions of th rigid piles in the supporting assembly for preventing and controlling the bump at the bridge head of the preferred embodiment of the invention.
Fig. 4 is a schematic view illustrating a connection relationship between the access panel and the abutment in the support assembly for preventing and treating bump at bridge head according to the preferred embodiment of the present invention.
Fig. 5 is a schematic flow chart of a construction method of a support assembly for preventing and treating bump at the bridge head according to a preferred embodiment of the invention.
Description of reference numerals:
th chamfer 2011
th rigid pile 202
Cushion cap 2021
Reinforcing member 203
Corbel 3012
Second rigid pile 302
Steps S1-S5
Detailed Description
The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings, but the present invention is not limited thereto.
As shown in fig. 1 to 4, the present embodiment provides supporting assemblies for preventing vehicle bump at bridge head, which are disposed on a transition section 10 between a deck section 30 and a pavement section 40, the transition section 10 includes, from top to bottom, a pavement 101, a subgrade 102 and a foundation 103, the supporting assembly 20 includes at least two layers of reinforcing members 203, a bridge plate 201 and a plurality of th rigid piles 202 disposed at intervals, the reinforcing members 203 are disposed at intervals in the subgrade 102 along the thickness direction of the subgrade 102, a th rigid pile 202 is embedded in the foundation 103, the heights of the plurality of th rigid piles 202 are sequentially shortened from the deck section 30 to the pavement section 40, a end of the bridge plate 201 is connected below the deck section 30, and another end of the bridge plate 201 is connected to the top end of the th rigid pile 202 near the deck section 30.
The foundation structure comprises a roadbed 102, a reinforcing member 203, a -th rigid pile 202, a foundation 103 and a -th rigid pile 202, wherein the reinforcing member 203 is arranged in the roadbed 102 and used for reinforcing the strength of the roadbed so as to improve the bearing capacity of the roadbed, the -th rigid pile 202 is arranged in the foundation 103 below the roadbed and used for reinforcing the strength of the foundation 103, the overall strength of the transition section 10 can be reinforced by arranging the reinforcing member and the -th rigid pile, the height of the -th rigid pile 202 is gradually reduced from a end close to the bridge abutment 301 to an end far from the bridge abutment 301, the rigidity is gradually reduced by adopting the structure form, the settlement change is also gradually reduced, a larger settlement rate change is not easy to occur, the driving is more stable and comfortable, the height of the rigid pile -adjacent to the bridge abutment is higher than that of a end far from the bridge abutment is more obvious as the settlement of the transition section closer to the bridge abutment is more obvious, the rigidity difference between the transition section and the bridge abutment is not obvious, so that the rigidity difference between the rigid pile -adjacent to the bridge is more obvious than that the end of the end far from the bridge abutment, the bridge is convenient to reduce the rigidity difference between the transition section and the transition section, the bridge deck, the foundation 203, the foundation structure form can effectively prevent the settlement of the foundation structure form that the settlement of the foundation structure form is effectively reduce the settlement of the foundation structure, the settlement of the foundation structure form, the foundation structure form can be used for effectively reducing the foundation structure of the foundation structure, the foundation structure of the foundation structure, the foundation structure of the foundation, the.
As will be understood by referring to fig. 1 and 4, the deck section 30 includes a deck, a second rigid pile 302 and an abutment 301 located between the deck and the second rigid pile 302, a bearing 2021 is provided at the upper end of the th rigid pile 202, and both ends of the butt strap 201 are respectively bridged on the abutment 301 and the bearing 2021, the top of the end of the butt strap 201 bridged on the abutment 301 is located below the deck, and the top of the end of the butt strap 201 bridged on the bearing 2021 is flush with the upper surface of the foundation 103, the end of the butt strap 201 close to the abutment 301 is connected with the back wall surface 3011 of the abutment 301 by the anchor bar 60, the bottom of the butt strap 201 close to the abutment 301 is connected with the corbel 3012 of the abutment 301 by the anchor bolt 70, the upper edge of the butt strap 201 close to the end of the abutment 301 is provided with a chamfer 2011, and the end of the butt strap 201 close to the abutment 301 is provided with a gap 3011, and the upper edge of the corbel 3013 is provided with a second chamfer 3013.
The bridge 201 is arranged obliquely and inclines downwards along the direction close to the bridge abutment to the direction far away from the bridge abutment, is achieved in the aspect of rigid-flexible transition, the step difference formed by settlement deformation of a foundation 103 on a bridge head can be effectively eliminated, the phenomenon of secondary vehicle jumping easily occurring at a joint due to the rigidity difference of transition sections 10 and of the bridge 201 when only the bridge 201 is arranged is avoided, a chamfer 2011 is arranged on the upper edge of the end, close to the bridge abutment 301, of the bridge 201, the bridge 101 and the bridge 301 structure are prevented from being damaged due to rotation of the bridge 201, driving comfort is prevented from being affected, a gap is reserved between the end face of the bridge close to the bridge abutment 301 and the back wall face 3011, the gap is used for arranging the bridge abutment 301 and the bridge 201, continuous load is adjusted, the contact speed of the bridge 3012 is adjusted, the contact speed of a vehicle is increased, the bridge 201 is enabled to be in contact with the bridge 301, the bridge 201 is enabled to be supported by the contact speed of the bridge 3012, and the stress of the bridge 201 is reduced, and the bridge 201 is enabled to be connected to be the bridge 201.
, most of the ends of the bridge end butt straps 201 close to the abutment 301 are laid under the asphalt concrete surface layer or on the top surface of the flat road surface base layer, the vehicle load can be quickly transmitted to the roadbed, and rainwater seeps from the expansion joints at the joints to cause the loss of filler water and soil and the overlarge settlement of the embankment, so that the butt straps 201 are disengaged, the butt straps 201 become a bending structure, and the butt straps 201 at the disengaged parts are easy to crack.
Referring to fig. 2 and 3, it will be understood that the circular pile hole sites 50 in fig. 2 and 3 are positions for placing the th rigid piles 202, the pile site layout shape of the th rigid piles 202 is rectangular (as shown in fig. 2) or quincunx (as shown in fig. 3), the length of the bridge deck 201 ranges from 3m to 8m, the reinforcing members 203 are geogrids, the ends of the geogrids close to the deck section 30 are anchored with the bridge deck 201, the ends of the geogrids, which are far away from the end of the deck section 30, extend out of the lowest th rigid piles 202 and extend towards the pavement section 40, the geogrids of the bottom layer are as wide as the roadbed 102, the geogrids of the top layer are as wide as the tops of the filler layers, the layers of the geogrids are parallel to each other, the number of the geogrids ranges from 2 to 3, each geogrid is formed by connecting a plurality of geogrids, and the geogrids are connected by a sewing.
The length of the butt strap is in proportion to the height of the abutment, the higher the abutment is, the longer the butt strap is, for example, the length of the butt strap is 3m for open culverts, the length of the butt strap is 4m for passages, the length of the butt strap is between 4m and 5m for small bridges, and the length of the butt strap is between 6m and 8m for large bridges and extra large bridges.
In alternative embodiments, the reinforcement members 203 may be constructed of other structural members, such as reinforcing bars, that are adapted to be disposed in the subgrade 102 and provide reinforcement, wherein the geogrid is anchored to the access panels 201 to make the geogrid and access panels 201 more reliable in combination, thereby facilitating more reliable reduction of differential settlement and preventing bump at the bridge head, wherein the geogrid extends from the end of the deck section 30 with the lowest rigid pile 202, ensuring that a length of grid placement greater than a length of pile handling section eliminates the difference in rigidity of the transition section 10, thereby facilitating more reliable reduction of differential settlement at the transition section 10 and preventing the occurrence of a secondary bump phenomenon, wherein the bottom geogrid is the geogrid disposed at the bottommost layer of the subgrade 102, i.e., adjacent to the foundation 103, and the top geogrid is the geogrid adjacent to the pavement 101, and the top geogrid is the same width as the subgrade 102, thereby facilitating improvement of the rigidity at various locations in the subgrade 102, preventing the difference in the differential settlement caused by the difference in rigidity of the subgrade 102, thereby facilitating improvement of the cost of the secondary bump between the geogrids, and facilitating improvement of the cost of the multiple layers of the geogrids.
As shown in fig. 5, the present embodiment further provides construction methods of the support assembly 20 for preventing and treating the bridge head bumping, the construction method being used for disposing the support assembly 20 for preventing and treating the bridge head bumping on the transition section 10 between the bridge deck section 30 and the pavement section 40, the construction method comprising the steps of:
s1, lifting a plurality of rigid piles 202 and inserting a plurality of rigid piles 202 into the foundation 103;
s2, piling the th rigid pile 202;
s3: setting up a butt strap 201;
s4: laying at least two layers of reinforcements 203, and backfilling the roadbed 102;
s5: the road surface 101 is constructed.
The specific construction method of the support assembly 20 for preventing vehicle bump at bridge head provided by the embodiment is as follows:
aiming at a newly-built road, firstly, preparation work before construction is carried out, and the original ground is cleaned and leveled. Measuring and setting out, preparing a working surface, and releasing pile positions, ensuring that the deviation of the pile positions does not exceed the requirements of specifications and design, and arranging the pile positions according to a rectangular shape or a quincunx shape, wherein the distance between piles is 3-5 times of the diameter as shown in figures 2 and 3.
And (3) hoisting the prefabricated th rigid pile 202, when the pile is hoisted, firstly fastening a steel wire rope and a rigging of the hoisted pile, then binding the upper end of the pile by using the rigging for about 50cm, starting a machine to hoist the th rigid pile 202, aligning a pile driver to the pile position center, slowly lowering the pile driver and inserting the pile driver into the foundation 103, and sequentially pushing the first th rigid pile 202 and the second th rigid pile 202 from the side close to the abutment 301 according to the length of the piles.
The method comprises the steps of arranging an inclined type butt strap 201, embedding anchor bars 60 in the back wall of the bridge abutment 301, welding and fixing the end of the inclined type butt strap 201 with main bars of the butt strap 201 when the butt strap 201 is to be cast in place, enabling the end of the butt strap 201 to be 2-3 cm away from the back wall surface 3011 so as to be convenient for arranging a continuous expansion joint between the end and the back wall surface, designing the upper edge of the butt strap 201 close to the end 301 of the bridge abutment 301 and the upper edge of a bracket 3012 of the bridge abutment 301 to be chamfered, and preventing damage to the pavement 101 and the structure of the bridge abutment 301 due to rotation of the butt.
The geogrid is laid in a roadbed 102 of the transition section 10, a concrete pavement 101 is arranged above the geogrid on the top layer, a -th rigid pile 202 is arranged in a foundation 103 below the geogrid on the bottom layer, the geogrids are connected through a sewing method, two adjacent geogrids are sewn through interwoven high-strength polypropylene belts, or the geogrids are connected through a lapping method, the lapping width is not less than 20m, and U-shaped nails are used for fixing the geogrids, the geogrids are twisted, folded and overlapped, so that the geogrids do not play a role, the geogrids are pulled straight during laying, the grids are smooth and uniform, meanwhile, the connection between the grids is noticed, after the earthwork filling and rolling are qualified, the geogrids on the upper layer are laid, the laying requirements and the connecting mode are the same as those of the geogrids on the bottom layer, only the width is equal to the width of the top width of a filling layer , the laying of the geogrids is preferably determined according to the height of the roadbed 102, the roadbed 102 is -like urban road roadbed 102, 2-3 layers are proposed, and the roadbed is laid in the roadbed, and other construction procedures such as the.
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 that 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 spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (13)
1, a supporting component for preventing and treating bridgehead car jump, it sets up on the changeover portion between bridge floor section and road surface section, the changeover portion is from last to including road surface, road bed and ground down, its characterized in that, supporting component includes:
at least two layers of reinforcing members arranged in the roadbed at intervals along the thickness direction of the roadbed;
a plurality of th rigid piles arranged at intervals and buried in the foundation, wherein the heights of the th rigid piles are sequentially shortened from the bridge deck section to the pavement section;
an end of the strap being connected below the deck section and the other end of the strap being connected to the top end of the th rigid pile adjacent the deck section.
2. The support assembly for preventing and treating bridge head bump as claimed in claim 1, wherein the bridge deck section comprises a bridge deck, a second rigid pile and a bridge abutment between the bridge deck and the second rigid pile, a bearing platform is arranged at the upper end of the th rigid pile, and two ends of the bridge deck are respectively arranged on the bridge abutment and the bearing platform.
3. The support assembly for controlling bump at bridge head of claim 2, wherein the top of end of the butt strap which is set on the bridge abutment is located below the bridge deck, and the top of end of the butt strap which is set on the bearing platform is flush with the upper surface of the foundation.
4. The support assembly for controlling bump at bridge head of claim 3, wherein the end of the butt strap near the abutment is connected with the back wall surface of the abutment by an anchor bar, and the bottom surface of the butt strap near the abutment is connected with the bracket of the abutment by an anchor bolt.
5. The support assembly for preventing and treating bump at bridge head of claim 4, wherein the upper edge of end of the butt strap near the abutment is provided with a -th chamfer, and a gap is left between the end surface of the butt strap near the abutment and the back wall surface.
6. The support assembly for controlling bump at a bridge head of claim 5, wherein the upper edge of the bracket is provided with a second chamfer.
7. The support assembly for controlling bump at bridge head of claim 1, wherein the pile position layout shape of the th rigid pile is rectangular or quincunx.
8. The support assembly for controlling bump at an axle as claimed in claim 1, wherein the length of the butt strap is in the range of 3m to 8 m.
9. A support assembly for controlling bump at an axle as claimed in any one of claims 1 to 8 at , wherein the reinforcement is a geogrid.
10. The support assembly of claim 9, wherein the geogrid is anchored to the access panel near the end of the deck section, the geogrid extends out of the lowest rigid pile and towards the deck section away from the end of the deck section, the geogrid on the bottom layer is the same width as the subgrade, and the geogrid on the top layer is the same width as the top of the fill layer.
11. The support assembly for controlling bump at bridge head according to claim 9, wherein the plurality of layers of geogrids are parallel to each other, and the number of layers of the geogrids ranges from 2 to 3.
12. The support assembly for controlling bump at a bridge head as claimed in claim 11, wherein each layer of the geogrid is formed by connecting a plurality of the geogrids, and the plurality of the geogrids are connected by a sewing method or a lap joint method.
A construction method of a support assembly for preventing bump at bridge head, , wherein the construction method is used for disposing the support assembly for preventing bump at bridge head according to any of claims 1 to 12 on the transition section between the bridge deck section and the road surface section, and the construction method comprises the steps of:
s1, lifting a plurality of rigid piles, and inserting a plurality of rigid piles into the foundation;
s2, piling the th rigid pile;
s3: setting up the butt strap;
s4: laying at least two layers of the reinforcing parts, and backfilling the roadbed;
s5: and constructing the pavement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911116708.2A CN110735390A (en) | 2019-11-15 | 2019-11-15 | Support assembly for preventing and treating bump at bridge head and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112144340A (en) * | 2020-10-13 | 2020-12-29 | 福建中设工程咨询有限公司 | Prevention and control structure for vehicle bump at bridge head of highway and construction method |
| CN114411464A (en) * | 2021-12-24 | 2022-04-29 | 吕永涛 | Bridgehead settlement prevention and control method for highway maintenance |
| CN114737490A (en) * | 2021-11-25 | 2022-07-12 | 上海建工集团股份有限公司 | Comprehensive treatment device and method for bridge head part suitable for coastal hydraulic reclamation area |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2256747C2 (en) * | 2002-04-22 | 2005-07-20 | Сибирский государственный университет путей сообщения | Method for forming interface between bridge roadway and embankment |
| CN201850505U (en) * | 2010-11-18 | 2011-06-01 | 中交第一公路勘察设计研究院有限公司 | Rigid-flexible transition structure capable of preventing bumping at bridge-head |
| CN204401447U (en) * | 2015-01-27 | 2015-06-17 | 重庆交通大学 | A kind of structure preventing bumping at bridge-head |
| CN105803922A (en) * | 2014-12-30 | 2016-07-27 | 上海浦东建筑设计研究院有限公司 | High embankment filling bridgehead sedimentation preventing structure |
| CN106096307A (en) * | 2016-06-23 | 2016-11-09 | 武汉理工大学 | Platform back of the body reinforcement administers the computational methods at the GSZ making interval of Bridgehead-Jumping Disease |
| JP2018009297A (en) * | 2016-07-11 | 2018-01-18 | ジャパンコンステック株式会社 | Structure of road at boundary between road structure and banking part |
| CN107740339A (en) * | 2017-10-23 | 2018-02-27 | 浙江交通职业技术学院 | It is a kind of to be used to run the reinforced bridgehead structures of rigidity and construction method that highway administers bumping at bridge-head |
| CN211285239U (en) * | 2019-11-15 | 2020-08-18 | 上海公路桥梁（集团）有限公司 | Supporting assembly for preventing and treating bump at bridge head |
-
2019
- 2019-11-15 CN CN201911116708.2A patent/CN110735390A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2256747C2 (en) * | 2002-04-22 | 2005-07-20 | Сибирский государственный университет путей сообщения | Method for forming interface between bridge roadway and embankment |
| CN201850505U (en) * | 2010-11-18 | 2011-06-01 | 中交第一公路勘察设计研究院有限公司 | Rigid-flexible transition structure capable of preventing bumping at bridge-head |
| CN105803922A (en) * | 2014-12-30 | 2016-07-27 | 上海浦东建筑设计研究院有限公司 | High embankment filling bridgehead sedimentation preventing structure |
| CN204401447U (en) * | 2015-01-27 | 2015-06-17 | 重庆交通大学 | A kind of structure preventing bumping at bridge-head |
| CN106096307A (en) * | 2016-06-23 | 2016-11-09 | 武汉理工大学 | Platform back of the body reinforcement administers the computational methods at the GSZ making interval of Bridgehead-Jumping Disease |
| JP2018009297A (en) * | 2016-07-11 | 2018-01-18 | ジャパンコンステック株式会社 | Structure of road at boundary between road structure and banking part |
| CN107740339A (en) * | 2017-10-23 | 2018-02-27 | 浙江交通职业技术学院 | It is a kind of to be used to run the reinforced bridgehead structures of rigidity and construction method that highway administers bumping at bridge-head |
| CN211285239U (en) * | 2019-11-15 | 2020-08-18 | 上海公路桥梁（集团）有限公司 | Supporting assembly for preventing and treating bump at bridge head |
Non-Patent Citations (3)
| Title |
|---|
| 施国良等: "关于路桥过渡段施工技术分析", 《黑龙江科技信息》, no. 10, 5 April 2010 (2010-04-05), pages 227 * |
| 李长杭: "路桥过渡段路基路面设计要点及沉降处理措施", 《绿色环保建材》, no. 05, 23 May 2019 (2019-05-23), pages 85 * |
| 郑霜杰: "《桥梁工程施工技术》", 30 April 2018, 华中科技大学出版社, pages: 168 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112144340A (en) * | 2020-10-13 | 2020-12-29 | 福建中设工程咨询有限公司 | Prevention and control structure for vehicle bump at bridge head of highway and construction method |
| CN114737490A (en) * | 2021-11-25 | 2022-07-12 | 上海建工集团股份有限公司 | Comprehensive treatment device and method for bridge head part suitable for coastal hydraulic reclamation area |
| CN114737490B (en) * | 2021-11-25 | 2023-09-08 | 上海建工集团股份有限公司 | Bridge head part comprehensive treatment device and method suitable for coastal hydraulic reclamation area |
| CN114411464A (en) * | 2021-12-24 | 2022-04-29 | 吕永涛 | Bridgehead settlement prevention and control method for highway maintenance |
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