CN210797245U - Structure is backfilled to bridgehead abutment back of body - Google Patents
Structure is backfilled to bridgehead abutment back of body Download PDFInfo
- Publication number
- CN210797245U CN210797245U CN201921319050.0U CN201921319050U CN210797245U CN 210797245 U CN210797245 U CN 210797245U CN 201921319050 U CN201921319050 U CN 201921319050U CN 210797245 U CN210797245 U CN 210797245U
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- layer
- masonry
- masonry structure
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- bridgehead
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000004576 sand Substances 0.000 claims abstract description 32
- 239000004567 concrete Substances 0.000 claims abstract description 31
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 23
- 229910052742 iron Inorganic materials 0.000 claims abstract description 21
- 239000011083 cement mortar Substances 0.000 claims abstract description 10
- 239000002689 soil Substances 0.000 claims abstract description 9
- 239000004568 cement Substances 0.000 claims abstract description 8
- 239000004746 geotextile Substances 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 62
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 7
- 230000009191 jumping Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000005056 compaction Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000011449 brick Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 229910001586 aluminite Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011381 foam concrete Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Images
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- Road Paving Structures (AREA)
Abstract
The utility model discloses a structure is backfilled to bridgehead abutment back of body belongs to road construction technical field. The utility model provides a structure is backfilled to bridgehead abutment back of body which characterized by: the anti-seepage concrete masonry structure comprises a masonry structure formed by masonry of iron tailing sand aerated concrete blocks layer by layer in a staggered joint masonry mode from bottom to top, a bottom cushion layer arranged at the bottom of the masonry structure, and a cast-in-place reinforced concrete slab layer arranged at the top of the masonry structure, wherein an anti-seepage geotextile layer is laid between the upper surface of the masonry structure and the cast-in-place reinforced concrete slab layer, the masonry structure is in lap joint with a main roadbed through steps, the bottom cushion layer comprises a cement stabilized soil layer with the thickness of 10cm and a sand cushion layer with the thickness of 10cm, and non-shrinkage cement mortar is filled between the iron tailing sand aerated concrete blocks of the masonry structure. The utility model discloses construction cost is low, and reduction platform back that can be obvious subsides, effectively improves the bridgehead problem of jumping a car.
Description
Technical Field
The utility model relates to a structure is backfilled to bridgehead abutment back of body belongs to road construction technical field.
Background
At present, the bump at the bridge head is still a common fault in highway engineering, and the main cause of the bump is the settlement of a soft foundation and a high fill foundation. At present, the commonly used platform back filler mainly takes soil with good water permeability, and uneven settlement is caused due to insufficient compaction and self-settlement, so that the problem of bumping at the bridge head is finally caused. At present, a few soft foundation projects adopt cast-in-place light foam concrete for backfilling, and the process is complex and the cost is high; meanwhile, a few projects use EPS (polystyrene foam) blocks for paving, and although the effect is good, the cost is too high, so that the method is not suitable for large-area popularization. Therefore, a platform back backfill structure which is low in cost, good in performance and capable of improving the problem of vehicle bump at the bridge head is urgently needed.
Disclosure of Invention
To the above-mentioned defect that exists among the prior art, the utility model provides a structure is backfilled to abutment back of a bridge with low costs, good performance, can improve the abutment problem of bumping a car.
The utility model discloses a realize through following technical scheme: the utility model provides a structure is backfilled to bridgehead abutment back of body which characterized by: the anti-seepage concrete masonry structure comprises a masonry structure formed by masonry of iron tailing sand aerated concrete blocks layer by layer in a staggered joint masonry mode from bottom to top, a bottom cushion layer arranged at the bottom of the masonry structure, and a cast-in-place reinforced concrete slab layer arranged at the top of the masonry structure, wherein an anti-seepage geotextile layer is laid between the upper surface of the masonry structure and the cast-in-place reinforced concrete slab layer, the masonry structure is in lap joint with a main roadbed through steps, the bottom cushion layer comprises a cement stabilized soil layer with the thickness of 10cm and a sand cushion layer with the thickness of 10cm, and non-shrinkage cement mortar is filled between the iron tailing sand aerated concrete blocks of the masonry structure.
The utility model discloses in adopt indisputable tailing sand aerated concrete block as the major structure of backfill platform back of body, the masonry structure who forms has stronger wholeness, is favorable to the atress even, can improve road bed bearing capacity, and indisputable tailing sand aerated concrete block density itself is low, the quality is light, intensity is high, and is little to the pressure of basement, can be obvious reduce the settlement of basement, and the building block does not subside by itself, is favorable to improving the problem that leads to the bridgehead to jump the car because of subsiding; the utility model discloses in set up the pressure that can disperse the bridgehead vehicle effectively at the cast-in-place reinforced concrete plate layer on masonry structure upper portion, avoid stress concentration's phenomenon, be favorable to protecting the wholeness of building block. The utility model discloses in the prevention of seepage geotechnological cloth layer that sets up between masonry structure's upper surface and cast in situ reinforced concrete sheet layer, can prevent effectively that water from oozing and leaking into masonry structure in, influence masonry structure wholeness ability.
Furthermore, a single-layer reinforcing mesh is laid in the cast-in-place reinforced concrete slab layer, the diameter of the reinforcing steel bar of the reinforcing mesh is 10mm, and the size of the mesh is 15cm multiplied by 15 cm. Through set up the reinforcing bar net at cast-in-place reinforced concrete slab layer inside, can effectively improve cast-in-place reinforced concrete slab layer's bearing capacity, protection masonry structure's wholeness.
Furthermore, in order to further improve the bearing capacity of the cast-in-place reinforced concrete slab layer, the thickness of the cast-in-place reinforced concrete slab layer is 15 cm.
Further, a layer of steel wire mesh is arranged in the bottom of the iron tailing sand aerated concrete building block, the diameter of a steel bar of the steel wire mesh is 5mm, the size of a grid is 15cm multiplied by 15cm, and the distance between the steel wire mesh and the bottom of the building block is 5 cm. Because the iron tailing sand aerated concrete block is bigger, the strength of the block can be improved by arranging the steel wire mesh in the bottom of the block, and the block can be prevented from being broken in the carrying process.
The utility model has the advantages that: the utility model discloses an adopt indisputable tailing sand aerated concrete block as the major structure who backfills in the platform back backfill region, the masonry structure who forms has stronger wholeness, is favorable to the atress even to indisputable tailing sand aerated concrete block quality itself is light, intensity is high, and the masonry structure intensity that forms is high, and is little to the pressure of basement, can improve the road bed bearing capacity, and can be obvious the subsides of reduction basement, and the building block does not have self to subside moreover. The utility model discloses a set up cast in situ reinforced concrete plate layer on masonry structure upper portion, can disperse the pressure of bridgehead vehicle effectively, avoid stress concentration's phenomenon, be favorable to protecting the wholeness of building block. The utility model discloses reduction abutment back that can be obvious subsides, can effectively protect masonry structure's wholeness, can effectively improve the problem of bridgehead skip. The utility model discloses owing to adopt indisputable tailing sand aerated concrete block as the major structure who backfills, construction cost is low, but greatly reduced backfill cost.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of an iron tailing sand aerated concrete block in the utility model;
in the figure, 1 is a bridge head butt strap, 2 is a cast-in-place reinforced concrete slab layer, 3 is a pavement structure layer, 4 is an impermeable geotechnical cloth layer, and 5 is a bottom cushion layer; 6 is non-shrinkage cement mortar, 7 is a masonry structure, 701 is an iron tailing sand aerated concrete block, 8 is a main roadbed, 9 is a bridge abutment, and 10 is a steel wire mesh.
Detailed Description
The invention will now be further described by way of non-limiting examples with reference to the accompanying drawings:
as shown in the attached drawings, the abutment back backfilling structure comprises a masonry structure 7 formed by building iron tailing aerated concrete blocks 701 layer by layer in a staggered joint building mode from bottom to top, a bottom cushion layer 5 arranged at the bottom of the masonry structure 7, a cast-in-place reinforced concrete slab layer 2 arranged at the top of the masonry structure 7, and an impermeable geotextile layer 4 is laid between the upper surface of the masonry structure 7 and the cast-in-place reinforced concrete slab layer 2. And the masonry structure 7 is in lap joint with the main roadbed 8 through steps. The bottom mat 5 comprises a 10cm thick cement stabilized soil layer and a 10cm thick sand mat layer located on the upper portion of the cement stabilized soil layer. Non-shrinkage cement mortar 6 is filled between the iron tailing sand aerated concrete blocks of the masonry structure 7.
In order to improve the bearing capacity of the cast-in-place reinforced concrete slab layer 2, a single-layer reinforcing mesh is preferably laid inside the cast-in-place reinforced concrete slab layer 2, the diameter of reinforcing steel bars of the reinforcing mesh is 10mm, and the size of the mesh is 15cm multiplied by 15 cm. The thickness of the cast-in-place reinforced concrete slab layer 2 is preferably 15 cm.
Because the size of the iron tailing sand aerated concrete block is large, in order to improve the strength of the block and avoid the block from being broken in the carrying process, a layer of steel wire mesh 10 is preferably arranged in the bottom of the iron tailing sand aerated concrete block 701, the diameter of a steel bar of the steel wire mesh 10 is 5mm, the size of a grid is 15cm multiplied by 15cm, and the distance between the steel wire mesh 10 and the bottom of the block is 5 cm.
The utility model provides an iron tailing sand aerated concrete block 701 is the aerated concrete block that adopts iron tailing sand, lime, cement, gypsum, aluminite powder etc. as the raw materials, through the batching, the stirring, the pouring, the precuring, the cutting, evaporate and press, the porous aerated concrete block of light that processes such as maintenance made, it is light, compressive strength is high, masonry structure intensity who builds formation by laying bricks or stones by it is high, can improve the road bed bearing capacity, and masonry structure whole light in weight, the settlement of reduction basement that can be obvious, and the building block does not have self to subside moreover, reduction bench back that can be obvious subsides. The utility model provides a mode that adopts the staggered joint to build by laying bricks or stones between the iron tailing sand aerated concrete block 701 among the masonry structure is backfilled to adopt no shrinkage cement mortar 6 to fill between the building blocks, make masonry structure have stronger wholeness, be favorable to the atress even. The mortar designation for the non-shrink cement mortar 6 is preferably No. 10.
The utility model discloses during specific construction, including following construction steps:
1. the design scheme is as follows: and setting steps and the number of layers of paving according to the size of the table back and the size of the iron tailing sand aerated concrete building block.
2. Laying the iron tailing sand aerated concrete building blocks:
(1) treatment of the substrate and the step: before construction, the base can not have water, measures are taken to cut off all water sources, and a temporary drainage facility is arranged. After the base is tamped and leveled, firstly, cement stabilized soil with the thickness of 10cm (the cement mixing amount is 10%) is paved, and then a sand cushion with the thickness of 10cm is paved. The steps should be smooth and the degree of compaction should meet the requirements.
(2) Building the iron tailing sand aerated concrete building blocks: the building blocks are built layer by layer from the bottom layer, the upper layer and the lower layer are built in staggered joints, and the building process is implemented by hanging lines in order to ensure flatness. Non-shrinkage cement mortar 6 is adopted between layers for leveling, gaps between adjacent building blocks are also filled with cement mortar, and No. 10 non-shrinkage cement mortar is adopted. And a sand cushion layer is used for leveling between the building blocks and the steps.
(3) Back filling and top surface treatment: after the building of the building blocks is finished, an impermeable geotextile layer 4 is paved on the top surface of the masonry structure 7, then a reinforced concrete slab layer 2 with the thickness of 15cm is poured, and a reinforcing mesh is paved inside the concrete. When a base layer is constructed in a back filling area, the vibration compaction is avoided, and a smooth wheel road roller and a rubber wheel road roller are combined for static pressure until the design compaction degree is reached.
(4) And (3) processing the back of the platform on the slope: before the building blocks are paved, edge-covering soil is firstly filled on two sides layer by layer and compacted to reach the designed compaction degree, the thickness of the edge-covering soil is 1m, the slope rate is designed according to the design requirement, then step excavation is carried out according to the design, and a sand cushion layer is used for leveling when the building blocks are paved.
Other parts in this embodiment are the prior art, and are not described herein again.
Claims (4)
1. The utility model provides a structure is backfilled to bridgehead abutment back of body which characterized by: the anti-seepage concrete masonry structure comprises a masonry structure formed by masonry of iron tailing sand aerated concrete blocks layer by layer in a staggered joint masonry mode from bottom to top, a bottom cushion layer arranged at the bottom of the masonry structure, and a cast-in-place reinforced concrete slab layer arranged at the top of the masonry structure, wherein an anti-seepage geotextile layer is laid between the upper surface of the masonry structure and the cast-in-place reinforced concrete slab layer, the masonry structure is in lap joint with a main roadbed through steps, the bottom cushion layer comprises a cement stabilized soil layer with the thickness of 10cm and a sand cushion layer with the thickness of 10cm, and non-shrinkage cement mortar is filled between the iron tailing sand aerated concrete blocks of the masonry structure.
2. The abutment back-filling structure of claim 1, wherein: a single-layer reinforcing mesh is laid in the cast-in-place reinforced concrete slab layer, the diameter of reinforcing steel bars of the reinforcing mesh is 10mm, and the size of a grid is 15cm multiplied by 15 cm.
3. The abutment back-filling structure of claim 2, wherein: the thickness of the cast-in-place reinforced concrete slab layer is 15 cm.
4. A bridgehead abutment backfill structure according to claim 1, 2 or 3, characterized by: a layer of steel wire mesh is arranged in the bottom of the iron tailing sand aerated concrete building block, the diameter of a steel bar of the steel wire mesh is 5mm, the size of a grid is 15cm multiplied by 15cm, and the distance between the steel wire mesh and the bottom of the building block is 5 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921319050.0U CN210797245U (en) | 2019-08-14 | 2019-08-14 | Structure is backfilled to bridgehead abutment back of body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921319050.0U CN210797245U (en) | 2019-08-14 | 2019-08-14 | Structure is backfilled to bridgehead abutment back of body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210797245U true CN210797245U (en) | 2020-06-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921319050.0U Withdrawn - After Issue CN210797245U (en) | 2019-08-14 | 2019-08-14 | Structure is backfilled to bridgehead abutment back of body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210797245U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578290A (en) * | 2019-08-14 | 2019-12-17 | 山东高速工程检测有限公司 | Abutment back backfilling structure of bridgehead and construction method thereof |
-
2019
- 2019-08-14 CN CN201921319050.0U patent/CN210797245U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578290A (en) * | 2019-08-14 | 2019-12-17 | 山东高速工程检测有限公司 | Abutment back backfilling structure of bridgehead and construction method thereof |
| CN110578290B (en) * | 2019-08-14 | 2024-04-05 | 山东高速工程检测有限公司 | Bridge abutment back backfill structure and construction method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200619 Effective date of abandoning: 20240405 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200619 Effective date of abandoning: 20240405 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |