CN110644308A - Construction method for paving road on debris flow soft foundation - Google Patents
Construction method for paving road on debris flow soft foundation Download PDFInfo
- Publication number
- CN110644308A CN110644308A CN201910984994.8A CN201910984994A CN110644308A CN 110644308 A CN110644308 A CN 110644308A CN 201910984994 A CN201910984994 A CN 201910984994A CN 110644308 A CN110644308 A CN 110644308A
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- road
- soft foundation
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- supporting
- paving
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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
- E01C7/00—Coherent pavings made in situ
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to a construction method for paving a road on a debris flow soft foundation, which belongs to the field of road construction and comprises the following steps: performing primary treatment on the soft foundation, extracting water on the surface of the soft foundation in a region to be constructed, and removing impurities such as trees, large stones and the like; installing a supporting layer into the soft foundation so that the supporting layer extends to a supporting layer in the soft foundation; mounting a support base plate on the support layer to effectively connect the support base plate with the support layer; paving a road cushion layer on the supporting bottom plate; the method has the advantages that the road surface layer is paved on the road cushion layer, and the road surface layer is compacted by the road compactor, so that the method has the effect of improving the load bearing capacity of the road to a certain extent.
Description
Technical Field
The invention relates to the technical field of road construction, in particular to a construction method for paving a road on a debris flow soft foundation.
Background
The debris flow refers to a special flood flow which is caused by landslide caused by rainstorm, snowstorm or other natural disasters and carries a large amount of silt and stones in a mountain area or other gullies and in a severe terrain. The debris flow has the characteristics of high abruptness, high flow rate, high flow, large material capacity, strong destructive power and the like. The traffic facilities such as roads, railways and the like are often destroyed by debris flow, and traffic transportation paralysis is caused. Therefore, road paving needs to be carried out on the debris flow soft foundation to solve the problem of traffic paralysis.
The prior Chinese patent with the publication number of CN109667207A discloses a construction method for paving a road on a debris flow soft foundation, which comprises the following steps: building a frame: erecting a support frame on the soft foundation, embedding the support frame into the soft foundation, wherein the support frame comprises longitudinal beams and cross beams, the longitudinal beams are provided with at least four parallel longitudinal beams, and the longitudinal beams extend along the length direction of the road; the cross beam is vertically connected to the longitudinal beam; pouring a cushion layer: pouring concrete above the soft foundation to form a cushion layer; surface layer construction: and constructing a surface layer above the cushion layer.
The above prior art solutions have the following drawbacks: before paving a road, a support frame needs to be erected on a debris flow soft foundation, and then a cushion layer and a surface layer are constructed on the soft foundation, but because the support frame is positioned in the soft foundation, when the load of the road is too large, the support frame can sink, so that the whole road surface sinks, and the road traffic is influenced.
Disclosure of Invention
The invention aims to provide a construction method for paving a road on a debris flow soft foundation, which can improve the load bearing capacity of the road to a certain extent.
The purpose of the invention is realized by the following technical scheme:
a construction method for paving a road on a debris flow soft foundation comprises the following steps:
s1: performing primary treatment on the soft foundation, extracting water on the surface of the soft foundation in a region to be constructed, and removing impurities such as trees, large stones and the like;
s2: installing a supporting layer into the soft foundation so that the supporting layer extends to a supporting layer in the soft foundation;
s3: mounting a support base plate on the support layer to effectively connect the support base plate with the support layer;
s4: paving a road cushion layer on the supporting bottom plate;
s5: paving a road surface layer on the road cushion layer, and compacting the road surface layer by using a road compactor.
By adopting the technical scheme, when the road construction is carried out on the debris flow soft foundation, firstly, the water on the surface of the soft foundation in the construction area is extracted, meanwhile, the trees and large stones in the soft foundation are removed, the supporting layer can be ensured to enter the supporting layer correctly, then the supporting layer is arranged in the soft foundation by utilizing equipment, and ensures that the supporting layer enters the holding layer of the soft foundation, thereby ensuring that the supporting layer can form stable support for the upper structure, then the supporting bottom plate is effectively connected with the supporting layer, and finally a road cushion layer and a road surface layer are constructed on the supporting bottom plate, so that the pavement of the road on the debris flow soft foundation is completed, the supporting layer is arranged at the bottom of the road and enters the bearing layer of the soft foundation, so that the whole road structure can bear more weight, the bearing capacity of the whole road is improved, and vehicles can better pass through the road.
The invention is further configured to: in S2, the supporting layer includes a plurality of supporting members spaced along the length direction of the road, the supporting members include a plurality of supporting plates spaced along the width direction of the road, the supporting plates are pressed into the holding layer of the soft foundation by the vibrating pile driving hammer, and the supporting plates are exposed out of the surface of the soft foundation by a height of 10cm-20 cm.
By adopting the technical scheme, the supporting plate is pressed into the holding force layer of the soft foundation according to the distance, so that the supporting layer for supporting the road is formed, the supporting plate can be pressed into the soft foundation more easily, the construction of the supporting layer is more convenient, and the supporting plate is exposed out of the surface of the soft foundation by the height of 10cm-20cm, so that the supporting plate can be conveniently connected with the supporting bottom plate.
The invention is further configured to: the top of the supporting plate is provided with a butting part.
Through adopting above-mentioned technical scheme, the area of contact between backup pad and the supporting baseplate can be increased in the setting of butt portion to make the backup pad be connected with the supporting baseplate better, make the backup pad can bear the weight that comes from the road better simultaneously.
The invention is further configured to: the distance between the adjacent support plates is 50cm-60cm, and the distance between the adjacent support pieces is 1m-1.2 m.
The invention is further configured to: in S3, when the supporting base plate is installed, a crushed stone layer may be laid on the soft base surface, and the thickness of the crushed stone layer is the same as the exposed height of the supporting plate.
Through adopting above-mentioned technical scheme, the setting of rubble layer can support the supporting baseplate better, further improves the bearing capacity of road.
The invention is further configured to: in S3, the supporting bottom plate is installed between two adjacent sets of supporting members in a segmented manner, and the supporting bottom plate and the supporting layer are welded to each other.
Through adopting above-mentioned technical scheme, install the supporting baseplate segmentation to support piece for the installation of supporting baseplate is more convenient, and each supporting baseplate all welds with the supporting layer simultaneously, makes to be connected between supporting baseplate and the supporting layer inseparabler.
The invention is further configured to: and in the step S4, the road cushion layer is made of cement-stabilized macadam materials.
The invention is further configured to: in the step S5, the road surface material is asphalt.
The invention is further configured to: in S5, the road compactor is used to compact the road surface at least 6 times.
By adopting the technical scheme, the road surface layer is compacted by the road compactor for more than 6 times, and the road surface layer can be ensured to have certain compaction degree, so that the stability of the whole road surface is ensured, and the damage of vehicles to the road surface is reduced.
The invention is further configured to: in S5, after the construction of the road surface is completed, temporary guard rails may be provided on both sides in the road length direction.
By adopting the technical scheme, the driving safety of the driver can be ensured to a certain extent by arranging the temporary protective guard.
In conclusion, the beneficial technical effects of the invention are as follows:
through set up the supporting layer of impressing to soft base holding power intraformational in mud-rock flow soft base, then construct supporting baseplate, road bed course and road surface course on the supporting layer in proper order again, the supporting layer can support whole road structure, transmits the weight of road to the holding power intraformational of soft base to can improve the bearing capacity of road, make the vehicle can pass through the road better, improve the security and the life of road to a certain extent.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;
fig. 3 is a partial structural schematic diagram for showing a support and a support base plate according to an embodiment of the present invention.
In the figure, 1, soft foundation; 2. a support layer; 21. a support member; 211. a support plate; 212. an abutting portion; 3. a support base plate; 31. a crushed stone layer; 4. a road cushion layer; 5. a road surface layer; 6. temporary guard rails.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, the construction method for paving a road on a soft foundation of a debris flow disclosed by the invention comprises the following steps:
s1: the soft foundation 1 in the area to be constructed is subjected to preliminary treatment, moisture on the surface of the soft foundation 1 is extracted, sundries such as trees or large stones in the soft foundation 1 are removed by an excavator, it is guaranteed that the supporting plate 211 can be prepared to enter a bearing layer (the depth of the bearing layer is obtained after calculation and field test) during construction, meanwhile, the area to be constructed needs to be measured and set, and the installation position of the supporting plate 211 is marked.
S2: installing a support layer 2 into a soft foundation 1, wherein a constructor can build a temporary bridge on the soft foundation 1 before installation so as to facilitate construction, the support layer 2 consists of a plurality of groups of support pieces 21 (see figure 3), the support pieces 21 are arranged at intervals along the length direction of a road, the support pieces 21 consist of a plurality of support plates 211 arranged at intervals along the width direction of the road, wherein the distance between two adjacent groups of support pieces 21 is 1-1.5 m, and the distance between two adjacent support plates 211 is 50-60 cm;
pressing the support plates 211 into the soft foundation 1 according to marked positions by using a vibration pile driving hammer until the support plates 211 enter a holding layer, controlling the height of the support plates 211 exposed out of the soft foundation 1 to be 10cm-20cm, keeping the exposed height of all the support plates 211 to be 10cm-20cm, and meanwhile, arranging abutting parts 212 at the tops of the support plates 211 in order to increase the distance between the support plates 211 and the support base plate 3;
in this embodiment, the support is composed of the support plate 211, but in other embodiments, the support plate 211 may be replaced by a support column, and the support column may have the same support effect.
S3: referring to fig. 2 and 3, the support base plate 3 is installed on the support layer 2, the support base plate 3 is installed on every two adjacent support members 21 in sections, the abutting portions 212 of the support base plate 3 and the support plate 211 are welded, so that the support base plate 3 and the support plate 211 are fixed, in order to further improve the load-bearing capacity of the road, a constructor can lay a layer of gravel layer 31 between the adjacent support members 21 before installing the support base plate 3, and the thickness of the gravel layer 31 is consistent with the exposed height of the support plate 211.
S4: the road cushion layer 4 is paved on the supporting bottom plate 3, the material of the road cushion layer 4 is cement stabilized macadam, the cement stabilized macadam takes graded macadam as aggregate, a certain amount of cementing material and enough mortar volume are adopted to fill the gap of the aggregate, the compactness is close to the compactness, the strength mainly depends on the embedding, squeezing and locking principle among the macadams, meanwhile, enough mortar volume is used to fill the gap of the aggregate, the initial strength is high, and the strength is increased along with the age and is quickly formed into a plate body, so that the road cushion layer 4 has higher strength, better impermeability and frost resistance, and the integral strength of the road can be improved.
S5: paving a road surface layer 5 on a road cushion layer 4, wherein the road surface layer 5 is made of asphalt, compacting the road surface layer 5 by using a road compactor after paving, and ensuring the road compactor to compact back and forth for more than 6 times, so that the compaction degree of the road surface layer 5 is ensured, the stability of the road surface layer 5 is improved, after the construction of the surface layer, temporary protective guards 6 can be constructed on two sides of a road, and the safety of driving personnel can be improved by the temporary protective guards 6.
Through set up in debris flow soft foundation 1 and impress to soft foundation 1 and hold intraformational supporting layer 2 of power, then construct supporting baseplate 3 on supporting layer 2 in proper order, road bed course 4 and road surface course 5, supporting layer 2 can support whole road structure, transmit the weight of road and vehicle to the soft foundation 1 hold in the power, the condition that the vehicle leads to the road to sink because the vehicle is overweight has reduced to take place, the bearing capacity of road has been improved, thereby make the vehicle can better pass through the road, the security and the life of road have been improved to a certain extent.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. A construction method for paving a road on a debris flow soft foundation is characterized by comprising the following steps:
s1: performing primary treatment on the soft foundation (1), extracting water on the surface of the soft foundation (1) in a region to be constructed, and removing impurities such as trees, large stones and the like;
s2: mounting the supporting layer (2) into the soft foundation (1) so that the supporting layer (2) extends to a bearing layer in the soft foundation (1);
s3: mounting a support base plate (3) on the support layer (2) to effectively connect the support base plate (3) with the support layer (2);
s4: paving a road cushion layer (4) on the supporting bottom plate (3);
s5: paving a road surface layer (5) on the road cushion layer (4), and compacting the road surface layer (5) by using a road compactor.
2. A construction method for paving a road on a debris flow soft foundation according to claim 1, wherein: in the step S2, the supporting layer (2) comprises a plurality of groups of supporting pieces (21) arranged at intervals along the length direction of the road, the supporting pieces (21) comprise a plurality of supporting plates (211) arranged at intervals along the width direction of the road, the supporting plates (211) are pressed into the force holding layer of the soft foundation (1) through the vibrating pile driving hammer, and the supporting plates (211) are exposed out of the surface of the soft foundation (1) at the height of 10cm-20 cm.
3. A construction method for paving a road on a debris flow soft foundation according to claim 2, wherein: the top of the support plate (211) is provided with an abutting part (212).
4. A construction method for paving a road on a debris flow soft foundation according to claim 2, wherein: the distance between the adjacent supporting plates (211) is 50cm-60cm, and the distance between the adjacent supporting pieces (21) is 1m-1.2 m.
5. A construction method for paving a road on a debris flow soft foundation according to claim 2, wherein: in the step S3, when the supporting base plate (3) is installed, a crushed stone layer (31) may be laid on the surface of the soft foundation (1), and the thickness of the crushed stone layer (31) is the same as the exposed height of the supporting plate (211).
6. A construction method for paving a road on a debris flow soft foundation according to claim 2, wherein: in the S3, the supporting bottom plates (3) are installed between two adjacent groups of supporting pieces (21) in a segmented mode, and the supporting bottom plates (3) and the supporting layers (2) are welded to each other.
7. A construction method for paving a road on a debris flow soft foundation according to claim 1, wherein: and in the step S4, the road cushion (4) is made of cement-stabilized macadam materials.
8. A construction method for paving a road on a debris flow soft foundation according to claim 1, wherein: in the step S5, the material of the road surface layer (5) is asphalt.
9. A construction method for paving a road on a debris flow soft foundation according to claim 1, wherein: in S5, the road compactor compacts the road surface (5) at least 6 times back and forth.
10. A construction method for paving a road on a debris flow soft foundation according to claim 1, wherein: in S5, after the construction of the road surface layer (5) is completed, temporary guard rails (6) may be provided on both sides in the road length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910984994.8A CN110644308A (en) | 2019-10-16 | 2019-10-16 | Construction method for paving road on debris flow soft foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910984994.8A CN110644308A (en) | 2019-10-16 | 2019-10-16 | Construction method for paving road on debris flow soft foundation |
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| CN110644308A true CN110644308A (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910984994.8A Pending CN110644308A (en) | 2019-10-16 | 2019-10-16 | Construction method for paving road on debris flow soft foundation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216133A (en) * | 2021-05-06 | 2021-08-06 | 岳阳市交通公路工程建设总公司 | Soft foundation shallow section curing structure and construction method thereof |
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| JPH08158302A (en) * | 1994-12-06 | 1996-06-18 | Tokyu Constr Co Ltd | Floating slab by precast slab |
| CN203625916U (en) * | 2013-10-16 | 2014-06-04 | 西安科技大学 | Highway soft soil layer composite pile foundation |
| CN205443828U (en) * | 2016-03-16 | 2016-08-10 | 威海立达尔机械有限公司 | Novel modularization road integrated system |
| CN105887603A (en) * | 2016-05-11 | 2016-08-24 | 宁波市交通规划设计研究院有限公司 | Method for controlling differential settlement of bridgehead roadbed |
| CN107447613A (en) * | 2017-07-31 | 2017-12-08 | 浙江大学城市学院 | A kind of deep super embankment on soft soil and construction method |
| CN107893352A (en) * | 2017-12-01 | 2018-04-10 | 新沂博瑞工业设计有限公司 | A kind of road structure of Frozen Ground Area |
| CN108867614A (en) * | 2018-07-20 | 2018-11-23 | 四川锦城智信建设工程有限公司 | A kind of construction method in mud-rock flow soft base upper berth pad road |
-
2019
- 2019-10-16 CN CN201910984994.8A patent/CN110644308A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08158302A (en) * | 1994-12-06 | 1996-06-18 | Tokyu Constr Co Ltd | Floating slab by precast slab |
| CN203625916U (en) * | 2013-10-16 | 2014-06-04 | 西安科技大学 | Highway soft soil layer composite pile foundation |
| CN205443828U (en) * | 2016-03-16 | 2016-08-10 | 威海立达尔机械有限公司 | Novel modularization road integrated system |
| CN105887603A (en) * | 2016-05-11 | 2016-08-24 | 宁波市交通规划设计研究院有限公司 | Method for controlling differential settlement of bridgehead roadbed |
| CN107447613A (en) * | 2017-07-31 | 2017-12-08 | 浙江大学城市学院 | A kind of deep super embankment on soft soil and construction method |
| CN107893352A (en) * | 2017-12-01 | 2018-04-10 | 新沂博瑞工业设计有限公司 | A kind of road structure of Frozen Ground Area |
| CN108867614A (en) * | 2018-07-20 | 2018-11-23 | 四川锦城智信建设工程有限公司 | A kind of construction method in mud-rock flow soft base upper berth pad road |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113216133A (en) * | 2021-05-06 | 2021-08-06 | 岳阳市交通公路工程建设总公司 | Soft foundation shallow section curing structure and construction method thereof |
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Application publication date: 20200103 |