CN111691251A - Treatment method for subgrade settlement in tropical zone - Google Patents
Treatment method for subgrade settlement in tropical zone Download PDFInfo
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- CN111691251A CN111691251A CN202010404538.4A CN202010404538A CN111691251A CN 111691251 A CN111691251 A CN 111691251A CN 202010404538 A CN202010404538 A CN 202010404538A CN 111691251 A CN111691251 A CN 111691251A
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- pipes
- water seepage
- drain pipe
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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
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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
- 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
- E01C3/06—Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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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
- Y02A30/60—Planning or developing urban green infrastructure
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Sewage (AREA)
Abstract
The invention discloses a method for treating subgrade settlement in tropical areas, which comprises the following steps: a plurality of first water seepage pipes are inserted in the soft soil foundation, and the lower ends of the first water seepage pipes extend into the soft soil foundation; laying a concrete layer above the soft soil foundation, arranging a drain pipe inside the concrete layer, wherein the drain pipe comprises two drain pipe sections, each drain pipe section extends downwards in an inclined mode, the outer end parts of the drain pipe sections extend to the side slope positions on the two sides of the concrete layer, and the upper end of the first water seepage pipe is connected with the drain pipe; paving a graded sandstone layer above the concrete layer, arranging a plurality of second water seepage pipes inside the graded sandstone layer, and connecting the second water seepage pipes with the drain pipes together, wherein the lower ends of the second water seepage pipes extend into the concrete layer; two drainage ditches are dug at two sides of the concrete layer, and the height of the outer side ditch wall of each drainage ditch is lower than that of the drainage pipe. The invention can improve the drainage effect of the foundation and the interior of the roadbed, thereby reducing the uneven settlement of the roadbed in tropical regions.
Description
Technical Field
The invention relates to the technical field of road construction, in particular to a method for treating subgrade settlement in tropical regions.
Background
The damage of the road surface is often related to the state of the interior of the roadbed, for example, uneven settlement of the interior of the roadbed can cause the damage of cracks and the like of the road surface. There are many factors that cause uneven settlement of the roadbed, and poor drainage is a common factor, so that drainage of water inside the roadbed needs to be considered. The drainage effect has a particularly remarkable effect on the roadbed constructed in the tropical region, and the reason is that the rainy season of the tropical region is long, the rainfall is large, rainwater permeates into the roadbed, and once the rainwater cannot be drained in time, pavement diseases can be caused. Therefore, for roadbed constructed in tropical zone, solution for providing better drainage effect is needed.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages described hereinafter.
An object of the present invention is to provide a settlement treatment method for a roadbed in a tropical region, which can improve the drainage effect of the roadbed and the interior of the roadbed, thereby reducing the uneven settlement of the roadbed in the tropical region.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a method for treating subgrade settlement in tropical areas, comprising:
inserting a plurality of vertically extending first water seepage pipes into a soft soil foundation, wherein the lower ends of the first water seepage pipes extend into the soft soil foundation, and the upper ends of the first water seepage pipes extend to the upper part of the soft soil foundation;
secondly, laying a concrete layer above the soft soil foundation, arranging a drain pipe in the concrete layer, wherein the drain pipe comprises two drain pipe sections, each drain pipe section extends downwards from an inner end part to an outer end part in an inclined mode, the outer end parts of the drain pipe sections extend to the positions of side slopes on two sides of the concrete layer and are communicated with the outside, the inner end parts of the two drain pipe sections are communicated and are symmetrically distributed relative to the vertical symmetrical plane of the concrete layer, the upper end of the first seepage pipe is connected with the drain pipe, and the first seepage pipe is communicated with the drain pipe;
thirdly, paving a graded sandstone layer above the concrete layer, arranging a plurality of second water seepage pipes which extend vertically inside the graded sandstone layer, wherein the upper ends of the second water seepage pipes extend to the inside of the graded sandstone layer, and the lower ends of the second water seepage pipes extend to the inside of the concrete layer, so that the second water seepage pipes are connected with the drain pipe, and the second water seepage pipes are communicated with the drain pipe;
and fourthly, paving a pavement layer on the graded sandstone layer, digging two drainage ditches at two sides of the concrete layer, arranging two drainage slope surfaces at the outer sides of the drainage ditches, and enabling the outer side ditch walls of the drainage ditches to be lower than the drainage pipes.
Preferably, in the method for treating subgrade settlement in tropical areas, in the second step, a plurality of the drainage pipes are arranged along the length direction of the soft soil foundation, and each drainage pipe is correspondingly connected with a plurality of the first water seepage pipes and a plurality of the second water seepage pipes.
Preferably, in the method for treating subgrade settlement in tropical zone, relative to the vertical symmetry plane of the concrete layer, the distance between two adjacent first water seepage pipes in the plurality of first water seepage pipes from inside to outside gradually increases, and the distance between two adjacent second water seepage pipes in the plurality of second water seepage pipes from inside to outside gradually increases.
Preferably, in the method for treating subgrade settlement in tropical zone, the distance between two innermost first water seepage pipes in the plurality of first water seepage pipes is 50cm, and the distance between two adjacent outward first water seepage pipes is gradually increased by 10 cm; the distance between two innermost second infiltration pipes in the plurality of second infiltration pipes is 50cm, and the distance between two adjacent outward second infiltration pipes is gradually increased by a distance of 10 cm.
Preferably, in the method for treating subgrade settlement in tropical regions, the first water seepage pipe comprises a first straight pipe body and a plurality of first branch pipe bodies arranged on the first straight pipe body, and the first branch pipe bodies extend outwards relative to the first straight pipe body; the second water seepage pipe comprises a second straight pipe body and a plurality of second branch pipe bodies arranged on the second straight pipe body, and the second branch pipe bodies extend outwards relative to the second straight pipe body.
Preferably, in the method for treating subgrade settlement in tropical areas, a plurality of first water seepage holes are uniformly distributed in the first straight pipe body and the first branch pipe body; and a plurality of second water seepage holes are uniformly distributed on the second straight pipe body and the second branch pipe body.
Preferably, in the method for treating subgrade settlement in tropical areas, in the second step, waterproof layers are laid on the concrete layer, the graded sandstone layer and side slopes on two sides of the pavement layer.
The invention at least comprises the following beneficial effects:
the invention provides a settlement treatment method for a roadbed in a tropical zone, which is characterized in that a plurality of first seepage pipes are inserted into a soft soil foundation, a drainage pipe is arranged in a concrete layer and comprises two drainage pipe sections, the drainage pipe sections extend downwards from the inner end part to the outer end part in an inclined manner, a plurality of second seepage pipes are arranged on a graded sandstone layer, the first seepage pipes and the second seepage pipes are connected to the drainage pipe, water in the soft soil foundation is drained into the drainage pipe through the first seepage pipes, rainwater entering the upper part of a road surface is drained into the drainage pipe through the second seepage pipes, and the water flows into a drainage ditch through the drainage pipe. The invention can improve the drainage effect of the foundation and the interior of the roadbed, thereby reducing the uneven settlement of the roadbed in tropical regions.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural view of a roadbed in a tropical zone according to an embodiment of the invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
As shown in fig. 1, the invention provides a method for treating subgrade settlement in tropical areas, which comprises the following steps:
step one, insert at soft soil foundation 1 and establish a plurality of vertical first infiltration pipe 2 that extend, the lower extreme of first infiltration pipe 2 extends to the inside of soft soil foundation 1, the upper end of first infiltration pipe 2 extends to the top of soft soil foundation.
Step two, a concrete layer 4 is laid above the soft soil foundation 1, a drain pipe 5 is arranged inside the concrete layer 4, the drain pipe comprises two drain pipe sections 8, each drain pipe section 8 extends downwards from an inner end part to an outer end part in an inclined mode, the outer end parts of the drain pipe sections 8 extend to the positions of side slopes on two sides of the concrete layer and are communicated with the outside, the inner end parts of the two drain pipe sections 8 are communicated and are symmetrically distributed relative to the vertical symmetrical plane of the concrete layer 4, the upper end of the first water seepage pipe 2 is connected with the drain pipe 5, and the first water seepage pipe and the drain pipe are kept communicated.
Step three, lay graded sandstone layer 11 above concrete layer 4 graded sandstone layer 11 the inside of graded sandstone layer 11 sets up a plurality of vertical second infiltration pipes 6 that extend, the upper end of second infiltration pipe 6 extends to inside the graded sandstone layer, the lower extreme of second infiltration pipe 6 extends to inside concrete layer 4, will second infiltration pipe 6 with drain pipe 5 links together, and makes the second infiltration pipe with the drain pipe keeps the intercommunication.
Fourthly, paving a pavement layer on the graded sandstone layer 11, digging two drainage ditches 10 on two sides of the concrete layer, arranging two drainage slope surfaces 12 on the outer sides of the drainage ditches 10, and enabling the height of the outer side ditch walls of the drainage ditches to be lower than that of the drainage pipes.
The inside water of soft soil foundation flows into to the drain pipe through first infiltration pipe in, and the rainwater of road surface top infiltration flows into to the drain pipe through the second infiltration pipe in, and the drain pipe is discharged water to the escape canal in. Since the two drain pipe sections are disposed obliquely downward from the inner end portion to the outer end portion, water entering the drain pipe does not accumulate inside the drain pipe but is directly discharged along the drain pipe sections. The outside in escape canal has set up the drainage domatic, and the water in the escape canal spills over the back from the escape canal promptly, can flow downwards along the drainage slope, and can not be always in the inside accumulation in escape canal, and simultaneously, the outside ditch wall height in escape canal is less than the height of drain pipe, avoids the excessive income drain pipe of water level in the escape canal. Based on the design, the drainage effect of the foundation and the interior of the roadbed can be improved, so that rainwater permeating from the upper part of the road surface and water in the soft soil foundation can be effectively discharged in time, and further, the uneven settlement of the path caused by poor drainage effect is reduced, and the occurrence of road surface diseases is effectively reduced.
In a preferred embodiment, in the second step, a plurality of the drainage pipes 5 are arranged along the length direction of the soft soil foundation 1, and each drainage pipe is correspondingly connected with a plurality of the first water seepage pipes and a plurality of the second water seepage pipes.
A drain pipe corresponds a plurality of first infiltration pipes and a plurality of second infiltration pipe, when arranging a plurality of drain pipes along the length direction of soft soil foundation, also be exactly the length direction of road, the drain pipe and the first infiltration pipe and the second infiltration pipe of being connected with it just can play the drainage effect to soft soil foundation and road bed inside to reduce the inhomogeneous settlement of road bed that the rainwater infiltration leads to.
In a preferred embodiment, in the method for treating subgrade settlement in tropical zone, the distance between two adjacent first water seepage pipes in the first water seepage pipes 2 from inside to outside is gradually increased, and the distance between two adjacent second water seepage pipes in the second water seepage pipes 6 from inside to outside is gradually increased relative to the vertical symmetry plane of the concrete layer.
The rainwater quantity is larger near the middle position of the concrete layer, so that the density of the first water seepage pipe and the second water seepage pipe gradually increases from two sides to the middle.
In a preferred embodiment, in order to further improve the drainage effect and reduce the uneven settlement of the roadbed caused by poor drainage, in the method for treating the settlement of the roadbed in the tropical region, the distance between the innermost two first water seepage pipes 2 in the first water seepage pipes 2 is 50cm, and the distance between the two adjacent first water seepage pipes on the outer side is gradually increased by 10 cm; the distance between the innermost two second water seepage pipes in the plurality of second water seepage pipes 6 is 50cm, and the distance between the two adjacent outward second water seepage pipes 6 is gradually increased by 10 cm.
In a preferred embodiment, in the method for treating subgrade settlement in tropical zone, the first water seepage pipe 2 comprises a first straight pipe body and a plurality of first branch pipe bodies 3 arranged on the first straight pipe body 13, and the first branch pipe bodies are extended outwards relative to the first straight pipe bodies; the second water seepage pipe 6 comprises a second straight pipe body 14 and a plurality of second branch pipe bodies 7 arranged on the second straight pipe body, and the second branch pipe bodies extend outwards relative to the second straight pipe body.
The pipe diameters of the first branch pipe body and the second branch pipe body are thin and can be designed to be 0.5cm-1 cm. The first branch pipe body and the second branch pipe body can serve as the function of capillary water pipes, and water infiltrated into the soft soil foundation and the graded sandstone layer is drained through the first water seepage pipe and the second water seepage pipe.
In a preferred embodiment, in the method for treating subgrade settlement in tropical areas, a plurality of first water seepage holes are uniformly distributed on the first straight pipe body 13 and the first branch pipe body 3; a plurality of second water seepage holes are uniformly distributed on the second straight pipe body 14 and the second branch pipe body 7.
Water in the soft soil foundation enters the first branch pipe body and the first straight pipe body through the first seepage holes and then enters the drain pipe. And water in the graded sandstone layer enters the second branch pipe body and the second straight pipe body through the second seepage hole and then enters the drain pipe.
In a preferred embodiment, in the method for treating subgrade settlement in tropical zone, in the second step, waterproof layers 9 are laid on the concrete layer 4, the graded sandstone layer 11 and the side slopes on two sides of the road surface layer.
And paving a waterproof layer for preventing rainwater from permeating into the roadbed from the side slopes at the two sides of the concrete layer, the graded sandstone layer and the pavement layer. Rainwater can flow into the escape canal along the waterproof layer directly. When the water level in the drainage ditch reaches the highest level, the water level can overflow from the ditch walls at two sides of the drainage ditch and be drained along the drainage slope. The waterproof layer can be made of building engineering waterproof materials.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.
Claims (7)
1. A method for treating subgrade settlement in tropical regions is characterized by comprising the following steps:
inserting a plurality of vertically extending first water seepage pipes into a soft soil foundation, wherein the lower ends of the first water seepage pipes extend into the soft soil foundation, and the upper ends of the first water seepage pipes extend to the upper part of the soft soil foundation;
secondly, laying a concrete layer above the soft soil foundation, arranging a drain pipe in the concrete layer, wherein the drain pipe comprises two drain pipe sections, each drain pipe section extends downwards from an inner end part to an outer end part in an inclined mode, the outer end parts of the drain pipe sections extend to the positions of side slopes on two sides of the concrete layer and are communicated with the outside, the inner end parts of the two drain pipe sections are communicated and are symmetrically distributed relative to the vertical symmetrical plane of the concrete layer, the upper end of the first seepage pipe is connected with the drain pipe, and the first seepage pipe is communicated with the drain pipe;
thirdly, paving a graded sandstone layer above the concrete layer, arranging a plurality of second water seepage pipes which extend vertically inside the graded sandstone layer, wherein the upper ends of the second water seepage pipes extend to the inside of the graded sandstone layer, and the lower ends of the second water seepage pipes extend to the inside of the concrete layer, so that the second water seepage pipes are connected with the drain pipe, and the second water seepage pipes are communicated with the drain pipe;
and fourthly, paving a pavement layer on the graded sandstone layer, digging two drainage ditches at two sides of the concrete layer, arranging two drainage slope surfaces at the outer sides of the drainage ditches, and enabling the outer side ditch walls of the drainage ditches to be lower than the drainage pipes.
2. The method for treating subgrade settlement in the tropical region according to claim 1, wherein in the second step, a plurality of the drain pipes are arranged along the length direction of the soft soil foundation, and each drain pipe is correspondingly connected with a plurality of the first water seepage pipes and a plurality of the second water seepage pipes.
3. The method for treating subgrade settlement in tropical areas according to claim 1, wherein the distance between two adjacent first water-permeating pipes in a plurality of first water-permeating pipes from inside to outside is gradually increased, and the distance between two adjacent second water-permeating pipes in a plurality of second water-permeating pipes from inside to outside is gradually increased, relative to the vertical symmetry plane of the concrete layer.
4. The method for treating subgrade settlement in tropical areas according to claim 3, wherein the distance between two innermost first water-permeating pipes in the plurality of first water-permeating pipes is 50cm, and the distance between two adjacent outward first water-permeating pipes is gradually increased by 10 cm; the distance between two innermost second infiltration pipes in the plurality of second infiltration pipes is 50cm, and the distance between two adjacent outward second infiltration pipes is gradually increased by a distance of 10 cm.
5. The method of claim 1, wherein the first infiltration pipe comprises a first tubular body and a plurality of first tubular bodies disposed on the first tubular body, the first tubular bodies extending outwardly relative to the first tubular body; the second water seepage pipe comprises a second straight pipe body and a plurality of second branch pipe bodies arranged on the second straight pipe body, and the second branch pipe bodies extend outwards relative to the second straight pipe body.
6. The method for treating subgrade settlement in the tropical region of claim 5, wherein a plurality of first water seepage holes are uniformly distributed on the first straight pipe body and the first branch pipe body; and a plurality of second water seepage holes are uniformly distributed on the second straight pipe body and the second branch pipe body.
7. The method for treating subgrade settlement in tropical areas according to claim 1, wherein in the second step, waterproof layers are laid on the concrete layer, the graded sandstone layer and the side slopes on the two sides of the road surface layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010404538.4A CN111691251A (en) | 2020-05-13 | 2020-05-13 | Treatment method for subgrade settlement in tropical zone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010404538.4A CN111691251A (en) | 2020-05-13 | 2020-05-13 | Treatment method for subgrade settlement in tropical zone |
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| CN111691251A true CN111691251A (en) | 2020-09-22 |
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| CN202010404538.4A Pending CN111691251A (en) | 2020-05-13 | 2020-05-13 | Treatment method for subgrade settlement in tropical zone |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114182657A (en) * | 2021-11-09 | 2022-03-15 | 中铁十九局集团第三工程有限公司 | Roadbed structure convenient for discharging accumulated water in roadbed |
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2020
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| WO2000050696A1 (en) * | 1999-02-25 | 2000-08-31 | Menard Soltraitement | An equipment and a method for partially drying a zone of ground containing a liquid |
| KR20050102160A (en) * | 2004-04-20 | 2005-10-25 | 송기현 | Surface treatment for soil improvement of solf reclaimed land |
| CN101021068A (en) * | 2007-03-09 | 2007-08-22 | 包国建 | Low-level prepressing drainage dynamic consolidating soft soil foundation processing method |
| CN203393530U (en) * | 2013-08-08 | 2014-01-15 | 江苏翔森建设工程有限公司 | Anti-floating lightweight high-fill embankment structure |
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| CN206941570U (en) * | 2017-07-08 | 2018-01-30 | 深圳百勤建设工程有限公司 | A kind of discharge structure of soft soil foundation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114182657A (en) * | 2021-11-09 | 2022-03-15 | 中铁十九局集团第三工程有限公司 | Roadbed structure convenient for discharging accumulated water in roadbed |
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Application publication date: 20200922 |