CN214939086U - A side direction restraint reinforced structure for existing loess road bed - Google Patents
A side direction restraint reinforced structure for existing loess road bed Download PDFInfo
- Publication number
- CN214939086U CN214939086U CN202120496302.8U CN202120496302U CN214939086U CN 214939086 U CN214939086 U CN 214939086U CN 202120496302 U CN202120496302 U CN 202120496302U CN 214939086 U CN214939086 U CN 214939086U
- Authority
- CN
- China
- Prior art keywords
- slope
- brickwork
- bar
- existing
- existing loess
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Road Paving Structures (AREA)
Abstract
The utility model particularly relates to a side direction restraint reinforced structure for existing loess road bed has solved current composite foundation treatment method when being used for existing loess road bed to the lateral deformation control effect not good, be unfavorable for the highway to protect the problem of expert, construction cost height, the unable assurance of construction quality. The utility model provides a side direction restraint reinforced structure for existing loess road bed, includes vertical upright bar brickwork, and the inside of locating the side slope is inlayed on the upper portion of bar brickwork, and the middle part and the lower part of bar brickwork are all buried underground in side slope below ground, and the upper surface of bar brickwork is provided with the protective layer. The number of the strip brickworks is one or two. The strip brickwork sets up in the middle part of the toe of side slope or side slope. The utility model discloses an existing loess subgrade's side direction is consolidated, and the prevention of seepage is effectual, has avoided subsiding by the side direction subgrade that the deformation arouses, can be used to deal with the existing operation highway subgrade in loess area and subsides and the disease that the slope collapses.
Description
Technical Field
The utility model relates to a reinforced structure is used in highway maintenance, specifically is a side direction restraint reinforced structure for existing loess road bed.
Background
In the highway maintenance engineering, for the highway project of early construction, because the understanding and research to the loess collapsibility are not enough, fail to take reasonable effectual treatment measure to the ground and the embankment in collapsible loess place in the construction period, lead to the road to get through the car operation after, the road bed soil body wets the collapsibility. At present, a common treatment method for loess subgrade settlement is to form a composite foundation by a compaction pile method, a vibro-replacement gravel pile method, a deep cement mixing pile method or a jet grouting pile method to achieve the purposes of eliminating the collapsibility, controlling the settlement deformation and improving the bearing capacity of the foundation and the embankment, but the treatment method is mostly used for building new roads.
However, practice shows that the existing composite foundation treatment method has the following problems when being used for the existing loess subgrade: firstly, with the development of the settlement of the existing loess subgrade, the subgrade soil and the side slope of the high fill embankment are easy to generate lateral displacement to cause deformation and damage of the subgrade, while the existing composite foundation treatment method is mainly used for treating the foundation below the pavement, only the settlement and the compression deformation in the vertical direction are considered, the influence caused by the lateral deformation and the additional settlement of the subgrade is ignored, and the composite foundation treatment method is not suitable for the existing loess subgrade with the lateral displacement; secondly, the existing composite foundation treatment method damages the original road surface when constructing on the existing road, thereby increasing the engineering cost; thirdly, the existing composite foundation treatment method has great influence on the maintenance and passing requirements of the maintenance engineering when being constructed on the existing highway, and has potential construction safety hazards; fourthly, various pile bodies used by the existing composite foundation treatment method are mostly hidden projects, the roadbed can not be broken in the construction process, and the quality of the pile bodies and the treatment effect can not be detected and controlled, so that the construction quality can not be guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve present composite foundation department method when being used for existing loess road bed to the lateral deformation control effect not good, be unfavorable for the highway to protect the problem of leading to, construction cost is high, construction quality can't guarantee, provide a side direction restraint reinforced structure for existing loess road bed.
The utility model discloses an adopt following technical scheme to realize:
the utility model provides a side direction restraint reinforced structure for existing loess road bed, includes vertical upright bar brickwork, and the inside of locating the side slope is inlayed on the upper portion of bar brickwork, and the middle part and the lower part of bar brickwork are all buried underground in side slope below ground, and the upper surface of bar brickwork is provided with the protective layer.
The quantity of bar brickwork is one or two, and the bar brickwork can set up in the both sides of road unilateral or symmetry setting in the road (the quantity of bar brickwork is for setting up in the one of road unilateral or symmetry setting in two of road both sides).
The strip masonry is arranged at the toe of the side slope or the middle part of the side slope.
According to the roadbed filling form, the strip masonry is longitudinally arranged in the middle of the side slope or at the position of the slope toe along the route, so that firstly, a waterproof curtain can be formed to prevent moisture from laterally permeating into the roadbed to cause subsidence; and secondly, the lateral deformation of the soil body of the foundation is limited by the hooping reinforcement effect of the strip-shaped masonry, the sinking of the roadbed is reduced, a large amount of roadbed settlement caused by the lateral deformation is avoided under the comprehensive effect of the two reinforcement principles, and the problems that the control effect on the lateral deformation is poor, the highway is not ensured favorably, the construction cost is high and the construction quality cannot be ensured when the existing composite foundation treatment method is used for the existing loess roadbed are solved.
For a roadbed full-section settlement road section, the reinforcing structures are arranged on two sides of a road and are symmetrically arranged; to the unilateral small-range settlement road section, this reinforced structure only sets up in the road bed settlement side.
The strip brickwork of the toe that is located the side slope sets up in the inboard of gutter.
This structural design sets up this reinforced structure in the side slope toe and is close to one side of road bed, has reduced the interval on this reinforced structure and road surface, has strengthened the reinforcement effect to a certain extent.
The bar brickwork is the wall body of being built by cement soil, lime-soil or concrete, and its upper surface, lower surface, lateral surface all are provided with the I water proof geotechnological cloth layer rather than laminating, and the I water proof geotechnological cloth layer that is located the upper surface upwards extends to be provided with the slope and places and inclination and slope unanimous II water proof geotechnological cloth layer, and I water proof geotechnological cloth layer is a body structure with II water proof geotechnological cloth layer.
The utility model discloses when being applied to the shallow layer punishment within 3m, direct excavation sets up the wall body of being built by soil cement, lime-soil or concrete, is guaranteeing to consolidate on the basis of effect, has reduced construction cost. The structural design of the I water-resisting geotextile layer and the II water-resisting geotextile layer can effectively improve the water-resisting performance of the wall body, and further improve the anti-seepage performance.
The height of the wall body is less than or equal to 3m, the thickness of the wall body is more than or equal to 0.8m, and the compactness of the wall body is more than or equal to 93 percent; and the width of the II waterproof geotextile layer along the slope surface up and down is more than or equal to 50 cm.
And the wall body positioned on the bridge conical slope or the channel conical slope is annularly arranged along the arc bottom edge of the conical slope toe.
This structural design can avoid the influence to existing road surface structure when this reinforced structure is under construction.
The bar brickwork is continuous pile body, continuous pile body is distributed and the pile body of arranging in succession around by a plurality of roots is constituteed, the pile body is high pressure jet grouting pile, tamped cement soil pile or cement mixing pile, and two adjacent pile bodies are along fore-and-aft overlap joint width for 15% of pile body diameter.
The utility model discloses when being applied to the deep punishment more than 3m, select continuous pile body form to with the continuous overlap joint of each pile body, maneuverability when having increased this reinforced structure construction. In addition, the structural style of continuous overlapping of the continuous pile bodies effectively improves the stability and the seepage-proofing performance of the reinforced structure.
And the pile bodies positioned on the bridge conical slope or the channel conical slope are distributed annularly along the arc bottom edge of the conical slope foot.
This structural design can avoid the influence to existing road surface structure when this reinforced structure is under construction.
The protective layer is a plain filling protective layer or a concrete protective layer, and the thickness of the protective layer is more than or equal to 0.5 m.
The structural design of protective layer can hide this reinforced structure in the underground, provides certain guard action to this reinforced structure, and then prolongs this reinforced structure's life.
The utility model has reasonable and reliable structural design, realizes the lateral reinforcement of the existing loess subgrade, has good seepage-proofing effect and excellent water-resisting performance, effectively enhances the reinforcement effect, avoids a large amount of subgrade settlement caused by lateral deformation, meanwhile, the excavation of the existing road surface is avoided, the damage of construction to the original road, particularly the road surface, is reduced, the construction cost is effectively reduced, and can dig directly and detect the quality of bar brickwork after the construction, construction quality obtains effectively guaranteeing, and is further, convenient construction, maneuverability when having increased the construction, has that the structure is firm, little to existing road surface structure influence, long service life, can fully satisfy the advantage of highway fender's pass demand, can be applicable to the shallow layer punishment and the deep punishment of existing loess subgrade simultaneously, can be used to punishment existing operation highway subgrade settlement and the disease of slope slumping in loess area.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of the bar-shaped masonry of the present invention when it is a continuous pile;
FIG. 3 is a schematic structural view of the continuous pile body of the present invention located in the middle of the side slope;
FIG. 4 is a schematic structural view of the continuous pile body of the present invention located at the toe of the side slope;
FIG. 5 is a schematic structural view of the bar-shaped masonry wall of the present invention;
fig. 6 is a schematic layout of the continuous piles in the present invention.
In the figure, 1-slope, 2-protective layer, 3-wall, 4-I water-resisting geotechnical cloth layer, 5-II water-resisting geotechnical cloth layer, 6-continuous pile body, 7-pile body, 8-curb stone, 9-guardrail and 10-road surface.
Detailed Description
The utility model provides a side direction restraint reinforced structure for existing loess road bed, includes vertical upright bar brickwork, and the inside of locating side slope 1 is inlayed on the upper portion of bar brickwork, and the middle part and the lower part of bar brickwork are all buried underground in the ground of 1 below of side slope, and the upper surface of bar brickwork is provided with protective layer 2.
The quantity of bar brickwork is one or two, and the bar brickwork can set up in road unilateral or the symmetry sets up in the both sides of road.
The strip masonry is arranged at the toe of the side slope 1 or in the middle of the side slope 1.
The strip brickwork that is located the toe of side slope 1 sets up in the inboard of gutter.
The bar brickwork is wall body 3 by cement, lime soil or concrete building, and its upper surface, lower surface, lateral surface all are provided with the I water proof geotechnological cloth layer 4 rather than the laminating, and the I water proof geotechnological cloth layer 4 that is located the upper surface upwards extends and is provided with the slope and places and inclination and 1 slope 1 unanimous II water proof geotechnological cloth layer 5 of slope, and I water proof geotechnological cloth layer 4 is a body structure with II water proof geotechnological cloth layer 5.
The height of the wall body 3 is less than or equal to 3m, the thickness of the wall body is more than or equal to 0.8m, and the compactness of the wall body is more than or equal to 93 percent; and the width of the II waterproof geotextile layer 5 along the slope surface is more than or equal to 50 cm.
The wall body 3 positioned on the bridge conical slope or the channel conical slope is annularly arranged along the arc bottom edge of the conical slope toe.
The bar brickwork is continuous pile body 6, continuous pile body 6 is distributed and the pile body 7 of arranging in succession around by a plurality of, pile body 7 is high pressure jet grouting pile, tamped cement soil pile or cement stirring stake, and two adjacent pile body 7 are along fore-and-aft overlap joint width for 15% of pile body 7 diameter.
And each pile body 7 positioned on the bridge conical slope or the channel conical slope is distributed along the circular direction of the arc bottom edge of the conical slope foot.
The protective layer 2 is a plain filling protective layer or a concrete protective layer, and the thickness of the protective layer is more than or equal to 0.5 m.
In the specific implementation process, the utility model discloses in the application, fill up the height according to the road bed and corresponding punishment highway section moisture content distribution condition confirms the construction form of bar brickwork. When the setting height of the continuous pile body 6 is calculated, firstly, the maximum value is selected from the depth which is 1.6 times of the roadbed filling height and the maximum depth of the actually measured water content, and then, the depth is increased by at least 2m on the basis of the maximum value, thereby determining the height of the continuous pile body 6. When the strip masonry is a wall 3, a construction mode of mixing soil backfilling is adopted. The strip masonry located at the position of the slope toe of the side slope 1 is cut off when meeting structures such as bridges, channels and the like, and the strip masonry extends to the bottom of the structures along the slope toe of the conical slope; for small structures such as a round pipe culvert, the small structures can be directly arranged across along the longitudinal direction of a route. The strip masonry located in the middle of the side slope 1 is disconnected and skipped when encountering structures such as bridges, channels, culverts and the like.
Claims (10)
1. The utility model provides a side direction restraint reinforced structure for existing loess road bed which characterized in that: including vertical upright bar brickwork, the inside of locating side slope (1) is inlayed on the upper portion of bar brickwork, and the middle part and the lower part of bar brickwork are all buried underground in side slope (1) below ground, and the upper surface of bar brickwork is provided with protective layer (2).
2. A lateral restraining and reinforcing structure for an existing loess subgrade according to claim 1, wherein: the quantity of bar brickwork is one or two, and the bar brickwork can set up in road unilateral or the symmetry sets up in the both sides of road.
3. A lateral restraining and reinforcing structure for an existing loess subgrade according to claim 1 or 2, wherein: the strip masonry is arranged at the toe of the side slope (1) or the middle part of the side slope (1).
4. A lateral restraining and reinforcing structure for an existing loess subgrade according to claim 3, wherein: the strip brickwork located at the slope toe of the side slope (1) is arranged on the inner side of the drainage side ditch.
5. A lateral restraining and reinforcing structure for an existing loess subgrade according to claim 3, wherein: bar brickwork is wall body (3) built by cement, lime-soil or concrete, and its upper surface, lower surface, lateral surface all are provided with I water proof geotechnological cloth layer (4) rather than laminating, and the I water proof geotechnological cloth layer (4) that are located the upper surface upwards extend be provided with the slope place and inclination and slope (1) slope unanimous II water proof geotechnological cloth layer (5), and I water proof geotechnological cloth layer (4) are the body structure with II water proof geotechnological cloth layer (5).
6. A lateral restraining and reinforcing structure for an existing loess subgrade according to claim 5, wherein: the height of the wall body (3) is less than or equal to 3m, the thickness of the wall body is more than or equal to 0.8m, and the compactness of the wall body is more than or equal to 93 percent; and the width of the II waterproof geotextile layer (5) along the slope surface up and down is more than or equal to 50 cm.
7. A lateral restraining and reinforcing structure for an existing loess subgrade according to claim 6, wherein: the wall body (3) positioned on the bridge conical slope or the channel conical slope is annularly arranged along the arc bottom edge of the conical slope foot.
8. A lateral restraining and reinforcing structure for an existing loess subgrade according to claim 3, wherein: the bar brickwork is continuous pile body (6), continuous pile body (6) are distributed and the pile body (7) of arranging in succession around a plurality of and constitute, pile body (7) are high pressure jet grouting pile, tamp soil cement stake or cement mixing pile, and two adjacent pile body (7) are along the 15% of fore-and-aft overlap width for pile body (7) diameter.
9. A lateral restraining and reinforcing structure for an existing loess subgrade according to claim 7, wherein: and each pile body (7) positioned on the bridge conical slope or the channel conical slope is distributed along the circular direction of the arc bottom edge of the conical slope toe.
10. A lateral restraining and reinforcing structure for an existing loess subgrade according to claim 1, wherein: the protective layer (2) is a plain filling protective layer or a concrete protective layer, and the thickness of the protective layer is more than or equal to 0.5 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120496302.8U CN214939086U (en) | 2021-03-09 | 2021-03-09 | A side direction restraint reinforced structure for existing loess road bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120496302.8U CN214939086U (en) | 2021-03-09 | 2021-03-09 | A side direction restraint reinforced structure for existing loess road bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214939086U true CN214939086U (en) | 2021-11-30 |
Family
ID=79118669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120496302.8U Active CN214939086U (en) | 2021-03-09 | 2021-03-09 | A side direction restraint reinforced structure for existing loess road bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214939086U (en) |
-
2021
- 2021-03-09 CN CN202120496302.8U patent/CN214939086U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204059124U (en) | A kind of sand drain strong rammer grouting behind shaft or drift lining foundation reinforcing structure | |
| CN103334357B (en) | Viaduct road embankment structure with lower pile foundation bearing platform extending in roadbed, and construction method | |
| CN109736346B (en) | Steel anchor pipe reinforced weathered rock stratum reinforced weighing type retaining wall structure and construction method | |
| CN103510441A (en) | Three-dimensional-drainage roadbed structure for preventing water damage of road in cold region and construction method thereof | |
| CN107938456B (en) | Construction method for filling river channel | |
| CN113445396B (en) | High-fill road foundation filling construction method for high liquid limit soil road section | |
| CN212404676U (en) | Soft soil foundation anti-settlement structure | |
| CN105200881B (en) | The construction method of High-cold regions roadbed freeze-harm Comprehensive Treatment structure | |
| CN203498721U (en) | Three-dimensional drainage roadbed structure preventing damage by water of road in cold region | |
| CN107700299B (en) | Overpass lower-layer ground road structure and construction method thereof | |
| CN210262555U (en) | Light soil road structure | |
| CN203334154U (en) | Embankment structure for preventing bearing platform of pile foundation from stretching in roadbed under viaduct | |
| CN108625244A (en) | A kind of roadbed composite structure and its construction method | |
| CN114775352A (en) | Widening structure for embankment wall section of existing roadbed in riverside and construction method | |
| CN112681043B (en) | Roadbed splicing widening structure and construction method | |
| CN214939086U (en) | A side direction restraint reinforced structure for existing loess road bed | |
| CN207552833U (en) | A kind of elevated bridge basal perimeter ground road structure | |
| CN214459270U (en) | Structure is widened in road bed concatenation | |
| CN102561368B (en) | Pre-compacted reinforced soil block flexible supporting structure | |
| CN214882662U (en) | Special roadbed structure above subway | |
| CN112575638B (en) | Roadbed reinforcing structure adopting steel reinforcement cage bamboo shoot piles and construction process of roadbed reinforcing structure | |
| CN212223491U (en) | Face river roadbed structure | |
| CN107858886B (en) | Viaduct foundation peripheral ground road and construction method thereof | |
| CN218175450U (en) | Anti formula highway structure that subsides | |
| CN214783654U (en) | Flood prevention wall structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |