CN207452913U - A kind of light-weight foamed concrete backfill bridge pier structure - Google Patents
A kind of light-weight foamed concrete backfill bridge pier structure Download PDFInfo
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- CN207452913U CN207452913U CN201721464334.XU CN201721464334U CN207452913U CN 207452913 U CN207452913 U CN 207452913U CN 201721464334 U CN201721464334 U CN 201721464334U CN 207452913 U CN207452913 U CN 207452913U
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- bridge pier
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- weight foamed
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Abstract
The utility model discloses a kind of light-weight foamed concrete backfill bridge pier structures, are related to pier location backfill field, including the former pier cap for being arranged on underground and the bridge pier component being arranged at the top of former pier cap；The bridge pier component includes ground bridge pier and underground bridge pier, and ground bridge pier is integrally formed with underground bridge pier；Bridge pier component is more than the cylindrical hollow structure of top diameter for base diameter, light-weight foamed concrete layer B is filled with inside the bridge pier of underground, auxiliary support mechanism is provided with outside the bridge pier of underground, auxiliary support mechanism includes the superstructure set gradually from top to bottom, light-weight foamed concrete layer A and metalling, the metalling is laid at the top of cushion cap, the inner wall of underground bridge pier is equipped with waterproof layer with outer wall painting, the utility model can reduce the vertical deformation caused by bridge pier, vertical relative settlement, the influences such as transversely deforming, bridge pier code requirement is also complied with while the security for ensureing existing bridge pier.
Description
Technical field
The utility model is related to bridge fields, and in particular to a kind of pier location backfills field.
Background technology
With the continuous development construction in city, building site area will gradually decrease, to save building site, fully profit
With space, future will widely run into the problem of existing pier location backfills.Light-weight foamed concrete is a kind of new coagulation
Foaming agent by the foamed system of foaming machine is mechanically fully foamed, and foam is uniformly mixed with cement mortar by soil material
It closes, then carries out cast-in-place construction by the pumping system of foaming machine or mould molding, the one kind formed through natural curing contain
The novel light insulation material of a large amount of sealed porositys.Its density is small, and density rating is generally 300-1800kg/m3, in building
The building structure such as external and internal wall, level, flooring, column in using this kind of material, building dead weight can generally be made to reduce by 25%
Left and right such as replaces normal concrete using light-weight foamed concrete, can improve the bearing capacity of component.
In the prior art, bridge pier being backfilled, generally use conventional fillers are filled, but the dead weight of filler is larger,
The vertical load of pile foundation can be increased considerably；It, will be along certain from cushion cap coboundary position when the compaction deformation of filler is larger
Angle there is shear fracture angle, can further increase the vertical load of pile foundation, therefore generally existing Pile Bearing Capacity surpasses
The problem of limit or each parameter-beyond-limit of pier top.In addition mechanical ramming is needed using conventional native hardcore, there are potential damages to existing bridge pier
Cold danger, influences its durability.And when bridge pier is hollow pier, common fillers can not carry out filling in pier.
Therefore, it is necessary to a kind of new in existing bridge pier backfill construction method.
Utility model content
The purpose of this utility model is that：In order to solve the vertical load pressure of existing highway bridge earthing layer weight and pile foundation
Caused by excessive the technical issues of bridge pier vertical deformation, vertical relative settlement, transversely deforming, a kind of light-weight foamed coagulation is provided
Earthen backfill bridge pier structure.
The utility model specifically uses following technical scheme to achieve these goals：
A kind of light-weight foamed concrete backfill bridge pier structure, including being arranged on the former pier cap of underground and being arranged on former bridge
Bridge pier component at the top of pier cushion cap；The bridge pier component includes ground bridge pier and underground bridge pier, ground bridge pier and underground bridge pier one
It is body formed；Bridge pier component is more than the cylindrical hollow structure of top diameter for base diameter, and it is light to be filled with foam inside the bridge pier of underground
Matter concrete layer B, circle auxiliary support mechanism is provided with outside the bridge pier of underground, and auxiliary support mechanism includes setting successively from top to bottom
Superstructure, light-weight foamed concrete layer A and the metalling put, the metalling are laid at the top of cushion cap, underground bridge pier it is interior
Wall is equipped with waterproof layer with outer wall painting.
Specifically, the light-weight foamed concrete layer A of light-weight foamed concrete layer and light-weight foamed concrete layer B density are carrying
The minimum design dry density of power safety coefficient calculates optimal light-weight foamed concrete dense according to specific bridge, bridge pier structure and uses
Density.
Specifically, the bridge deck structure is vertical setting with ground structure, under original bridge pier is arranged on, in original bridge pier
On the basis of bridge pier is set, realize that people travels with automobile shunting, the use of the soil bigger of realization.
Specifically, light-weight foamed concrete layer pours to be divided into.Its density of Conventional filler material and conduct oneself with dignity it is larger, as filling out
Hollow pier structure can be damaged by filling material, and then increase the vertical load pressure of pile foundation, and light-weight foamed concrete can mitigate stake
Base vertical load ability increases using duration, while the alkalescent and water proofing property that light-weight foamed concrete has, can increase bridge pier
Durability.
Specifically, light-weight foamed concrete layer passes through formwork erection placement layer by layer, light-weight foamed concrete layer and dimension of platform phase
Together.
Specifically, bridge pier outer wall in underground is coated with two layers of heated bitumen.
Specifically, bridge pier inner wall in underground is two layers of waterproof coating.
Specifically, light-weight foamed concrete layer A is less than 2m with light-weight foamed concrete layer B vertical-horizontals gap.
Specifically, rubble thickness 30-40cm, metalling can help light-weight foamed concrete layer A drainings.
Specifically, the material of superstructure is consistent with earth material, more convenient in construction.
The beneficial effects of the utility model are as follows：
1. use light-weight foamed concrete material that can effectively reduce the dead weight of bridge object as packing material, and then reduce
The vertical load pressure of earthing layer weight and pile foundation, can not only meet the requirement for bearing capacity of pier footing, but also can reduce pair
The influences such as vertical deformation, vertical relative settlement, transversely deforming caused by bridge pier, had both ensured the security of existing bridge pier and had met
Design specification.
2. light-weight foamed concrete is a kind of by foam and the mixed uniformly heat insulating material of cement mortar, not only density
Small, lightweight is light and durability is strong, low bullet damping property is good, has function of heat insulation, while without benzene, formaldehyde in its raw material
Etc. harmful substances, not can cause environmental pollution, and cheap.
3. containing moisture in foam concrete, waterproof material can effectively prevent corrosiveness of the moisture to bridge pier structure,
Increase bridge pier usage time.
4. metalling can help light-weight foamed concrete draining, reduce ponding and the burn into of bridge pier is destroyed.
Description of the drawings
Fig. 1 is the plane of structure schematic diagram of the present invention；
Fig. 2 is underground bridge pier top view；
Reference numeral：1- bridge deck structures；2- bridge pier components；2-1 undergrounds bridge pier；2-2 grounds bridge pier；3- ground lines；On 4-
Portion's structure；The light-weight foamed concrete layer A of 5-；The light-weight foamed concrete layer B of 6-；7- metallings；8- cushion caps；9- original places upper thread.
Specific embodiment
In order to which those skilled in the art are better understood from the utility model, below in conjunction with the accompanying drawings with following embodiment to this
Utility model is described in further detail.
Embodiment 1
Referring to shown in Fig. 1, a kind of light-weight foamed concrete backfill bridge pier structure includes the former pier cap 8 for being arranged on underground
With the bridge pier component 2 for being arranged on former 8 top of pier cap；The bridge pier component 2 includes ground bridge pier 2-2 and underground bridge pier 2-1,
Ground bridge pier 2-2 and underground bridge pier 2-1 is integrally formed；Bridge pier component 2 is more than the cylindrical hollow knot of top diameter for base diameter
Structure, underground bridge pier 2-1 inside are filled with light-weight foamed concrete layer B6, and circle auxiliary load-bearing is provided with outside the bridge pier 2-1 of underground
Mechanism, auxiliary support mechanism include the superstructure 4, light-weight foamed concrete layer A5 and the metalling 7 that set gradually from top to bottom,
The metalling 7 is laid on 8 top of cushion cap, and inner wall and the outer wall painting of underground bridge pier 2-1 are equipped with waterproof layer.
S1. by 9 foundation excavation of original place upper thread to 8 top of cushion cap；
S2. waterproof layer：The inner wall of underground bridge pier 2-1 and outer wall brushing waterproof layer；
S3. metalling：It is laid with the metalling 7 of thickness 35cm；
S4. light-weight foamed concreting：Light-weight foamed concrete layer A 5 and light-weight foamed concrete layer B 6 simultaneously into
Row pours；
S5. 4 layers of construction of superstructure are finally carried out.
Light-weight foamed concrete layer B 6 is set with light-weight foamed 5 density of concrete layer A for the minimum of bearing capacity safety coefficient
Count dry density.
The bridge deck structure 1 is vertical setting with ground structure 3.
Light-weight foamed concrete layer B 6 is poured by being divided into.
Light-weight foamed concrete layer A 5 passes through formwork erection placement layer by layer, light-weight foamed concrete layer A 5 and 8 size phase of cushion cap
Together.
Underground bridge pier 2-1 outer walls are coated with two layers of heated bitumen.
Underground bridge pier 2-1 inner walls are two layers of waterproof coating.
Light-weight foamed concrete layer B 6 and light-weight foamed 5 vertical-horizontal gap 1m of concrete layer A.
The material of superstructure 4 is consistent with earth material.
The above is only the preferred embodiment of the utility model, is not intended to limit the utility model, the utility model
Scope of patent protection be subject to claims, what every specification and accompanying drawing content with the utility model was made is equal
Structure change similarly should be included in the scope of protection of the utility model.
Claims (8)
- A kind of 1. light-weight foamed concrete backfill bridge pier structure, which is characterized in that the former pier cap (8) including being arranged on underground With the bridge pier component (2) being arranged at the top of former pier cap (8)；The bridge pier component (2) includes ground bridge pier (2-2) and underground Bridge pier (2-1), ground bridge pier (2-2) are integrally formed with underground bridge pier (2-1)；Bridge pier component (2) is more than top for base diameter The cylindrical hollow structure of diameter, underground bridge pier (2-1) are internal filled with light-weight foamed concrete layer B (6), underground bridge pier (2-1) Outside is provided with circle auxiliary support mechanism, and auxiliary support mechanism includes the superstructure (4) set gradually from top to bottom, foam Lightweight concrete layer A (5) and metalling (7), the metalling (7) are laid at the top of cushion cap (8), underground bridge pier (2-1) it is interior Wall is equipped with waterproof layer with outer wall painting.
- 2. a kind of light-weight foamed concrete backfill bridge pier structure according to claim 1, which is characterized in that the foam is light Matter concrete layer B (6) is to be divided into pouring structure.
- A kind of 3. light-weight foamed concrete backfill bridge pier structure according to claim 1 or 2, which is characterized in that the bubble Foam lightweight concrete layer A (5) is formwork erection placement layer by layer structure, and light-weight foamed concrete layer A (5) is identical with cushion cap (8) size.
- 4. a kind of light-weight foamed concrete backfill bridge pier structure according to claim 1 or 2, which is characterized in that describedly Lower bridge pier (2-1) outer wall is coated with two layers of heated bitumen.
- 5. a kind of light-weight foamed concrete backfill bridge pier structure according to claim 1 or 2, which is characterized in that describedly Lower bridge pier (2-1) inner wall is two layers of waterproof coating.
- A kind of 6. light-weight foamed concrete backfill bridge pier structure according to claim 1 or 2, which is characterized in that the bubble Foam lightweight concrete layer B (6) is less than 2m with light-weight foamed concrete layer A (5) difference in height.
- A kind of 7. light-weight foamed concrete backfill bridge pier structure according to claim 1, which is characterized in that the metalling (7) thickness is 30-40cm.
- A kind of 8. light-weight foamed concrete backfill bridge pier structure according to claim 1, which is characterized in that the top knot Structure (4) paver is consistent with earth material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721464334.XU CN207452913U (en) | 2017-11-06 | 2017-11-06 | A kind of light-weight foamed concrete backfill bridge pier structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721464334.XU CN207452913U (en) | 2017-11-06 | 2017-11-06 | A kind of light-weight foamed concrete backfill bridge pier structure |
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| Publication Number | Publication Date |
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| CN207452913U true CN207452913U (en) | 2018-06-05 |
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| CN201721464334.XU Active CN207452913U (en) | 2017-11-06 | 2017-11-06 | A kind of light-weight foamed concrete backfill bridge pier structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107794932A (en) * | 2017-11-06 | 2018-03-13 | 固远晨通科技发展有限公司 | A kind of light-weight foamed concrete backfill bridge pier structure |
-
2017
- 2017-11-06 CN CN201721464334.XU patent/CN207452913U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107794932A (en) * | 2017-11-06 | 2018-03-13 | 固远晨通科技发展有限公司 | A kind of light-weight foamed concrete backfill bridge pier structure |
| CN107794932B (en) * | 2017-11-06 | 2023-10-03 | 固远晨通科技发展有限公司 | Pier structure is backfilled to foam lightweight concrete |
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