CN210797316U - Box culvert construction structure on soft foundation - Google Patents
Box culvert construction structure on soft foundation Download PDFInfo
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- CN210797316U CN210797316U CN201920741336.1U CN201920741336U CN210797316U CN 210797316 U CN210797316 U CN 210797316U CN 201920741336 U CN201920741336 U CN 201920741336U CN 210797316 U CN210797316 U CN 210797316U
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Abstract
The utility model relates to a box culvert construction structures on soft base, including the weak soil road bed and follow supreme block stone bed course, rubble bed course and the concrete cushion of laying on soft soil road bed in proper order down, laid the box culvert on the concrete cushion, all be equipped with the escape canal on the weak soil road bed of box culvert both sides. The utility model has the advantages that: the problem of soft soil roadbed stabilization during box culvert construction is solved, and the shear strength, the bearing capacity and the stability of the foundation are improved; compared with the prior art, the utility model has the advantages that: the construction speed is fast, raw materials can be used locally, the construction is convenient and fast, the investment and the land acquisition and removal cost can be greatly reduced, the adjustment, construction and planning and other processes are avoided, the method can be conveniently applied to the construction conditions of soft soil foundations such as silt, mucky soil, silty clay and the like, and the popularization is convenient.
Description
Technical Field
The utility model relates to a municipal works construction technical field especially relates to a box culvert construction structures on soft base.
Background
In recent years, the economy of China is rapidly developed, and the municipal engineering construction scale is continuously enlarged. For the newly-built and reconstructed urban road drainage projects, the difficulty of drainage system construction is higher due to the complex urban underground structure, and particularly the difficulty of drainage system construction is increased in the construction of soft soil roadbeds.
The cast-in-place reinforced concrete box culvert has good integrity, larger rigidity, durability and relatively lower maintenance cost, and is a common culvert structure form of a newly-built drainage system. The construction of municipal drainage engineering box culverts generally encounters soft soil roadbeds such as silt, mucky soil, silty clay and saturated soil, the soft soil roadbeds have the characteristics of low shear strength, poor stability and bearing capacity and the like, the foundations need to be treated during construction, if the soft soil roadbeds are not treated or are not treated properly, the quality of a drainage system and roads on the drainage system can be reduced, and if the soft soil roadbeds are not treated or are not treated properly, safety quality accidents can be caused.
Patent application No. CN105625301A discloses a soft foundation treatment construction process, which comprises the steps of sinking immersed tubes into the ground of a soft soil roadbed, and adopting a vibration immersed tube mode for construction, so as to play a role in enhancing the strength of the soft soil roadbed. However, in the prior art, the connection strength between adjacent oppositely-arranged immersed pipes is not enough, and the immersed pipes are difficult to keep good supporting effect in a soft soil roadbed. In addition, in the prior art, methods such as a filling and replacement method, a compaction method, drainage box culvert diversion and the like are generally adopted to solve the problem that a soft soil roadbed is encountered during box culvert construction of drainage engineering; the drainage box culvert line-changing method relates to the problems of planning change, land acquisition removal and the like, and has great limitation in the prior art by comprehensive consideration.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a box culvert construction structure on soft base is provided to overcome not enough among the above-mentioned prior art.
The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a box culvert construction structures on soft base, includes the soft soil roadbed and from supreme piece stone bed course, rubble bed course and the concrete cushion of laying in proper order on soft soil roadbed down, has laid the box culvert on the concrete cushion, all is equipped with the escape canal on the soft soil roadbed of box culvert both sides.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
In the scheme, the water collecting wells are arranged in the drainage ditch at preset intervals.
In the scheme, the distance between two adjacent water collecting wells in the drainage ditch is 20-50 m.
In the scheme, the thickness of the stone block cushion layer is 300-800 mm.
In the scheme, the thickness of the gravel cushion layer is 150-300 mm.
In the scheme, the concrete cushion is formed by pouring C10 concrete.
The utility model has the advantages that: the problem of soft soil roadbed stabilization during box culvert construction is solved, and the shear strength, the bearing capacity and the stability of the foundation are improved; compared with the prior art, the utility model has the advantages that: the construction speed is fast, raw materials can be used locally, the construction is convenient and fast, the investment and the land acquisition and removal cost can be greatly reduced, the adjustment, construction and planning and other processes are avoided, the method can be conveniently applied to the construction conditions of soft soil foundations such as silt, mucky soil, silty clay and the like, and the popularization is convenient.
Drawings
Figure 1 is the utility model discloses a box culvert construction structures's on soft base structural schematic diagram.
In the drawings, the components represented by the respective reference numerals are listed below:
1. soft soil roadbed, 2, stone cushion layer, 3, broken stone cushion layer, 4, concrete cushion layer, 5, box culvert, 6, escape canal, 7, sump pit.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Example 1
As shown in fig. 1, a box culvert construction structure on soft foundation, when in implementation, the soft soil roadbed 1 is excavated in full section, the surface cleaning construction and the cleaning construction of the soft soil roadbed 1 are completed in sections, then the rock block cushion layer 2, the rock block cushion layer 3 and the concrete cushion layer 4 are sequentially paved on the soft soil roadbed 1 from bottom to top, drainage ditches 6 for drainage during construction are arranged on the soft soil roadbeds 1 on two sides of the box culvert 5, water collection wells 7 are arranged in the drainage ditches 6 at preset intervals, in general, the distance between two adjacent water collection wells 7 in the drainage ditches 6 is 20m, the thickness of the rock block cushion layer 3 is preferably 150mm, the thickness of the rock block cushion layer 2 is preferably 300mm, and the concrete cushion layer 4 is formed by C10 pouring.
Example 2
As shown in fig. 1, a box culvert construction structure on soft foundation, when in implementation, the soft soil roadbed 1 is excavated in full section, the surface cleaning construction and the cleaning construction of the soft soil roadbed 1 are completed in sections, then the rock ballast layer 2, the rock ballast layer 3 and the concrete ballast layer 4 are sequentially laid on the soft soil roadbed 1 from bottom to top, drainage ditches 6 for drainage during construction are arranged on the soft soil roadbeds 1 on two sides of the box culvert 5, water collection wells 7 are arranged in the drainage ditches 6 at preset intervals, in general, the distance between two adjacent water collection wells 7 in the drainage ditches 6 is 20m, the thickness of the rock ballast layer 3 is preferably 300mm, the thickness of the rock ballast layer 2 is preferably 800mm, and the concrete ballast layer 4 is formed by C10 pouring.
Example 3
As shown in fig. 1, a box culvert construction structure on soft foundation, when in implementation, the soft soil roadbed 1 is excavated in full section, the surface cleaning construction and the cleaning construction of the soft soil roadbed 1 are completed in sections, then the rock block cushion layer 2, the rock block cushion layer 3 and the concrete cushion layer 4 are sequentially paved on the soft soil roadbed 1 from bottom to top, drainage ditches 6 for drainage during construction are arranged on the soft soil roadbeds 1 on two sides of the box culvert 5, water collection wells 7 are arranged in the drainage ditches 6 at preset intervals, generally, the distance between two adjacent water collection wells 7 in the drainage ditches 6 is 20m, the thickness of the rock block cushion layer 3 is preferably 280mm, the thickness of the rock block cushion layer 2 is preferably 600mm, and the concrete cushion layer 4 is formed by C10 pouring.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (5)
1. A box culvert construction structure on a soft foundation is characterized by comprising a soft soil roadbed (1), and a block stone cushion layer (2), a broken stone cushion layer (3) and a concrete cushion layer (4) which are sequentially paved on the soft soil roadbed (1) from bottom to top, wherein a box culvert (5) is arranged on the concrete cushion layer (4), and drainage ditches (6) are arranged on the soft soil roadbed (1) at two sides of the box culvert (5); the concrete cushion (4) is formed by pouring C10 concrete.
2. A culvert construction structure on soft foundation according to claim 1, characterized in that water collecting wells (7) are provided in the drainage ditches (6) at predetermined intervals.
3. A culvert construction structure on soft foundation according to claim 2, characterized in that the distance between two adjacent water collecting wells (7) in the drainage ditch (6) is 20-50 m.
4. A box culvert construction structure on soft foundation according to claim 1, 2 or 3, characterized in that the thickness of the rock block cushion layer (2) is 300 mm-800 mm.
5. A box culvert construction structure on soft foundation according to claim 1, 2 or 3, characterized in that the thickness of the gravel cushion layer (3) is 150 mm-300 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920741336.1U CN210797316U (en) | 2019-05-22 | 2019-05-22 | Box culvert construction structure on soft foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920741336.1U CN210797316U (en) | 2019-05-22 | 2019-05-22 | Box culvert construction structure on soft foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210797316U true CN210797316U (en) | 2020-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920741336.1U Active CN210797316U (en) | 2019-05-22 | 2019-05-22 | Box culvert construction structure on soft foundation |
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| Country | Link |
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| CN (1) | CN210797316U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112144425A (en) * | 2020-09-14 | 2020-12-29 | 中国电建市政建设集团有限公司 | Box culvert drainage ditch pouring method located at high water level and in sandy soil environment |
| CN112813844A (en) * | 2021-02-08 | 2021-05-18 | 中交路桥建设有限公司 | Access-protecting passage meeting rapid flood discharge requirement in river channel and construction method |
-
2019
- 2019-05-22 CN CN201920741336.1U patent/CN210797316U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112144425A (en) * | 2020-09-14 | 2020-12-29 | 中国电建市政建设集团有限公司 | Box culvert drainage ditch pouring method located at high water level and in sandy soil environment |
| CN112144425B (en) * | 2020-09-14 | 2021-10-29 | 中国电建市政建设集团有限公司 | Box culvert drainage ditch pouring method located at high water level and in sandy soil environment |
| CN112813844A (en) * | 2021-02-08 | 2021-05-18 | 中交路桥建设有限公司 | Access-protecting passage meeting rapid flood discharge requirement in river channel and construction method |
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