CN220724752U - Road rebuilding and expanding old road vertical section lifting and leveling supporting and protecting structure - Google Patents
Road rebuilding and expanding old road vertical section lifting and leveling supporting and protecting structure Download PDFInfo
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- CN220724752U CN220724752U CN202320930406.4U CN202320930406U CN220724752U CN 220724752 U CN220724752 U CN 220724752U CN 202320930406 U CN202320930406 U CN 202320930406U CN 220724752 U CN220724752 U CN 220724752U
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- steel wire
- gabion
- old road
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 239000011178 precast concrete Substances 0.000 claims abstract description 19
- 229910001335 Galvanized steel Inorganic materials 0.000 claims abstract description 11
- 239000008397 galvanized steel Substances 0.000 claims abstract description 11
- 239000004744 fabric Substances 0.000 claims abstract description 7
- 230000001681 protective effect Effects 0.000 claims abstract description 3
- 239000004575 stone Substances 0.000 claims description 16
- 239000004746 geotextile Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 230000035699 permeability Effects 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 230000009172 bursting Effects 0.000 claims description 3
- 238000005246 galvanizing Methods 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 3
- 239000004567 concrete Substances 0.000 description 6
- 238000011065 in-situ storage Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
Abstract
The utility model discloses a road reconstruction and expansion old road longitudinal section lifting and leveling support and protection structure, relates to lifting and keeps off and protective structure technical field, includes: gabion structures below the newly built pavement structure layer and anti-collision facilities arranged above the newly built pavement structure layer; gabion structure includes rectangle steel wire net case, geotechnique fabric bag, rectangle steel wire net case top is provided with galvanized steel wire net lid, geotechnique fabric bag intussuseption is filled with the unscreened rubble, geotechnique fabric bag is placed in the steel wire net case, anticollision facility comprises precast concrete guardrail and guardrail bottom socket joint steel stand. Compared with the traditional cantilever retaining wall retaining lifting retaining and protecting structure, the utility model does not need to increase a temporary field for producing prefabricated members, the temporary construction cost and the secondary transportation cost are saved, the guardrail base is not required to be removed, and the safety of the traffic lane of the operation road is not influenced in the construction process.
Description
Technical Field
The utility model relates to the technical field of lifting supports and protective structures, in particular to a road reconstruction and expansion old road longitudinal section lifting and leveling supporting and protecting structure.
Background
With the rapid development of economy and the continuous growth of transportation industry, the expressway built in early stage can not meet the current traffic bearing capacity, and the expressway gradually enters a large-scale reconstruction and expansion construction process.
Because the section plane and the longitudinal surface index of the expressway part designed in the early stage are lower, the horizontal and longitudinal combination is poorer, the viewing distance is shorter, and the longitudinal section of the reconstructed and expanded old road needs to be adjusted. Among the prior art, old road lifting adopts earthwork or screening rubble to lift and need put the slope at ordinary times of transferring, influence the normal traffic operation of old road, can adopt to lead to one side to set up the cantilever type barricade by the operation car and prop up fender lifting usually, set up cast in situ concrete base installation anticollision setting at cantilever type retaining wall top, because cantilever type barricade and concrete base have hindered the intercommunication of water system under the old and new road structure layer, drainage is unsmooth between new and old road, and cantilever type barricade and cast in situ concrete base are close to the operation high-speed lane construction safety risk great, engineering cost is high, cast in situ concrete base top is gone deep in the road structure layer and need be chisel in, be unfavorable for road surface concatenation quality.
Therefore, the utility model researches a vertical section lifting leveling supporting and protecting structure which does not obstruct the water communication below new and old pavement structural layers and does not influence the pavement splicing quality and has low engineering cost.
Disclosure of Invention
The utility model aims at overcoming the defects in the prior art, and designs a road reconstruction and extension old road longitudinal section lifting, leveling, supporting and protecting structure which is used for road sections with the road reconstruction and extension old road longitudinal section lifting height larger than the thickness of a newly built road structural layer and arranged at the overlap joint position of an old road and a new road.
In order to achieve the above purpose, the utility model provides a road reconstruction and expansion old road longitudinal section lifting and leveling support and protection structure, which adopts the following technical scheme that: gabion structures below the newly built pavement structure layer and anti-collision facilities arranged above the newly built pavement structure layer; the gabion structure comprises a rectangular steel wire net box and a geotextile bag, wherein a galvanized steel wire net cover is arranged at the top of the rectangular steel wire net box, unscreened crushed stones are filled in the geotextile bag, and the geotextile bag is placed in the steel wire net box.
Furthermore, unscreened crushed stones are filled at one side of the gabion structure and at the bottom of the newly built pavement.
Further, the gabion structure is arranged above the hard road shoulder of the old road, a first precast concrete guardrail is arranged on one side of the Fang Danlong structure of the old road, and a temporary drainage ditch is arranged between the first precast concrete guardrail and the gabion structure.
Further, the anti-collision facility comprises a second precast concrete guardrail and a socket steel upright post at the bottom of the second precast concrete guardrail.
Further, the rectangular steel wire net boxes are woven by galvanized steel wire nets, the inside of each gabion structure in the length direction is equally divided into four grids by the galvanized steel wire nets, and lacing wires are horizontally arranged on each small net box along the width direction of the gabion structure.
Furthermore, the geotextile bag is made of PET material, has water permeability, and is unsealed at the upper part; the unit area mass of the gabion geotechnical bag is more than or equal to 350g/m < 2 >, the tensile strength is more than or equal to 60KN, and the CBR bursting strength is more than or equal to 6KN.
Further, when the old road is lifted by 1.34 m-1.94 m (inclusive), the length, width and height of the gabion structure are 400cm by 100cm by 30cm; when the old road is raised by 1.94m (without the old road) to 3.5m, the length, width and height of the gabion structure are 400cm by 200cm by 50cm.
Further, the aperture of the rectangular steel wire net box net hole is 60 x 80mm, the net wire diameter is 2.7mm, the net wire tension is not less than 450Mpa, the surface treatment of the net wire adopts hot galvanizing treatment, and the zinc layer is 200-350g/m < 2 >.
Furthermore, the unscreened crushed stone is 0-37.5mm in specification and has good water permeability.
Further, the length of a single guardrail of the second precast concrete guardrail is 400cm, the bottom is 50.3cm, the top is 23.5cm, the height is 110cm, and 4 socket holes with the depth of 25cm are reserved at equal intervals at the bottom of the guardrail and are used for being matched with the socket steel upright posts.
Compared with the prior art, the utility model has the beneficial effects that:
1. compared with the traditional cantilever type retaining wall supporting and lifting supporting and protecting structure, the prefabricated member production method does not need to increase a temporary site to produce prefabricated members, saves temporary construction cost and secondary transportation cost, does not need to dismantle a guardrail base, and is beneficial to pavement splicing quality;
2. the required materials have low construction cost relative to reinforced concrete engineering;
3. the gabion structure is rapid in production, convenient to transport and store, rapid in construction progress, flexible in construction period and free from being influenced by rainy days;
4. the gabion structure has good water permeability, and water below the new and old pavement structure layers can be communicated, so that the stability of the roadbed strength is ensured;
5. the concrete guardrail is a permanent combined prefabricated guardrail, and the steel upright posts are old waveform guardrails, so that the environment-friendly idea is realized;
6. the utility model does not influence the traffic lane safety of the operation road in the construction process.
Drawings
FIG. 1 is a schematic cross-sectional view of the present utility model;
FIG. 2 is a schematic view of a longitudinal section structure of the present utility model;
FIG. 3 is a schematic structural view of a gabion structure;
fig. 4 is a schematic structural view of the geotextile bag.
In the figure: 1-old road; 2-a first precast concrete guardrail; 3-temporary drainage ditches; 4-old road hard road shoulders; 5-gabion structure; 6-unscreened crushed stone; 7-newly built pavement; 8-rectangular steel wire net boxes; 9-a steel wire mesh cover; 10-geotextile bags; 11-lacing wire; 12-an anti-collision facility; 13-second prefabrication a concrete guardrail; 14-socket steel upright post.
Detailed Description
Preferred embodiments of the present utility model will be described in more detail below. While the preferred embodiments of the present utility model are described below, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
In the description of the present utility model, it should be noted that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1-4, the utility model relates to a road reconstruction and expansion old road longitudinal section lifting and leveling support and protection structure, comprising: gabion structure 5 below the structure layer of newly-built road surface 7 and anti-collision facility 12 that sets up above the structure layer of newly-built road surface 7, gabion structure 5 includes rectangle steel wire box with a net 8, geotextile bag 10, unseparated rubble 6. The rectangular steel wire net box 8 is woven by galvanized steel wire nets, the inside of each gabion in the length direction is equally divided into four grids by galvanized steel wire nets, the top of the net box is additionally provided with a galvanized steel wire net cover 9, the geotextile bag 10 is made of PET material with good corrosion resistance, is placed in a steel wire net cage, and the unscreened crushed stone 6 is granular material with good grading. The anti-collision facility 12 consists of a second precast concrete guardrail 13 and a socket steel upright post 14 at the bottom of the guardrail. The anti-collision facility is arranged on a newly built pavement structure layer in a hole guiding mode, and the newly built pavement structure layer is paved on the gabion structure.
In a specific embodiment, the width of the traffic lane of the old road 1 is compressed from 3.75m to 3.5m, and the old road hard road shoulder 4 is enclosed by the first precast concrete guardrail 2 before the original waveform guardrail and other traffic facilities are dismantled, so that the operation road and the construction area are isolated.
Before the construction of the gabion structure 5, a longitudinal temporary drainage ditch 3 with the width of 50cm and the depth of 13cm is milled and dug on one side of the first precast concrete guardrail 2 at the hard shoulder 4 of the old road, so that no ponding is caused on the operation road during the construction period in rainy season.
The gabion structure 5 adopts the mode of field assembly, and the inside of each rectangular steel wire net box 8 adopts the steel wire net to divide into four little net boxes by four partition intervals, and the geotechnical fabric bag 10 is inlayed to every little net box, in order to prevent that the gabion packing building stones from taking place big deformation after ramming, every little net box sets up lacing wire 11 along gabion width direction level.
And after the assembly is completed, the gabion structure 5 is arranged at a position which is 50cm away from the isolation first precast concrete guardrail 2, so that the width of the structural layer of the newly-built road surface 7 at the extension side is ensured to meet the passing of two traffic protection roads.
After the rectangular steel wire net boxes 8 are placed in place, the unscreened crushed stones 6 are filled into the small net boxes in a layered mode, and a small rammer is used for ramming after the unscreened crushed stones 6 are filled.
After each layer of rectangular steel wire net boxes 8 are filled with unscreened crushed stones 6, paving unscreened crushed stones 6 at the expanded side, taking the top surface of each layer of gabion rectangular steel wire net boxes 8 as a control elevation, and compacting the unscreened crushed stones 6 at the expanded side by using a land leveler through a road roller full section. The next rectangular steel wire net cage 8 is constructed layer by layer to the top surface of the leveling layer together with the unscreened crushed stones 6 at the extension side.
Rectangular steel wire net boxes 8 are vertically staggered and laid, and adjacent rectangular steel wire net boxes 8 are bound and connected into a whole.
And after the gabion structure 5 is supported and lifted, carrying out construction of a newly built pavement 7 structural layer on the extension side according to the width requirement of the traffic protection road.
After the construction of the structural layer of the newly built road surface 7 on the extension side of the elevation section is completed, the top surface of the structural layer of the newly built road surface 7 is provided with a hole and a socket steel pipe column 14, the permanently combined second precast concrete guardrail 13 is in socket connection with the socket steel pipe column 14, and the newly built road surface 7 on the extension side is used as a vehicle opposite running middle isolation anti-collision facility 12 when the vehicle is in traffic, so that the traffic safety of the elevation section is ensured.
The utility model can be applied to the lifting, leveling, supporting and protecting of the extension side under the conditions that the road is extended and the old road is longitudinally broken and lifted and the old road traffic is guaranteed. When in use, the gabion structure is arranged on a road bed with a flat new and old lap joint position, and is filled and built in layers together with the unscreened crushed stone leveling material at the expanded side. According to the difference of the elevation of the old road, two kinds of standard and size gabion structures are respectively adopted, the gabion structures are vertically staggered and built, galvanized steel wires are adopted to connect the gabion structures to form a whole, the elevation and leveling of the old road are realized, a new road structure layer is constructed after the construction of the leveling layer is completed, and an anti-collision device is installed on the top of the new road structure layer.
Wherein, gabion structure divide into two kinds of specification sizes, do respectively: when the old road is lifted by 1.34 m-1.94 m (including), 400cm is adopted for 100cm and 30cm is adopted for the old road; when the old road is raised by 1.94m (without the old road) to 3.5m, 400cm is used for 200cm and 50cm is used for the old road.
Rectangular steel wire cage, mesh aperture is 60 80mm. The diameter of the net wire is 2.7mm, and the tension of the net wire is not less than 450Mpa. The surface treatment of the net wire adopts hot galvanizing treatment, and the zinc layer is 200-350g/m < 2 >.
The geotextile bag is made of PET material, has water permeability, and the upper part is not sealed. The unit area mass of the gabion geotechnical bag is more than or equal to 350g/m < 2 >, the tensile strength is more than or equal to 60KN, and the CBR bursting strength is more than or equal to 6KN.
The unscreened crushed stone is 0-37.5mm in specification and has good water permeability.
The length of a single guardrail of the first precast concrete guardrail and the second precast concrete guardrail is 400cm, the width of the bottom is 50.3cm, the width of the top is 23.5cm, and the height is 110cm. 4 socket holes with the depth of 25cm are reserved at equal intervals at the bottom of the guardrail.
The socket steel upright post is a corrugated guardrail steel upright post of an old road, the diameter is 140mm, and the single length is 115cm.
The above embodiments are only preferred embodiments of the present utility model, and the above description is not intended to limit the scope of the present utility model in turn, and the above description is illustrative, not exhaustive, and therefore: all equivalent changes in structure, shape, and principle of the utility model are intended to be encompassed within the scope of the utility model, as many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the embodiments described.
Claims (10)
1. The utility model provides a road rebuilds old road vertical section lifting leveling fender and protective structure, its characterized in that includes: gabion structures (5) below the structural layer of the newly built pavement (7) and anti-collision facilities (12) arranged above the structural layer of the newly built pavement (7); gabion structure (5) are including rectangle steel wire box with a net (8), geotechnique's fabric bag (10), rectangle steel wire box with a net (8) top is provided with galvanized steel wire net lid (9), geotechnique's fabric bag (10) intussuseption is filled with and is not sieved rubble (6), geotechnique's fabric bag (10) are placed in steel wire box with a net (8).
2. The road reconstruction and expansion old road longitudinal section lifting, leveling, supporting and protecting structure according to claim 1 is characterized in that unscreened broken stone (6) is filled at one side of the gabion structure (5) and at the bottom of a newly built road surface (7).
3. The road reconstruction and expansion old road longitudinal section lifting, leveling, supporting and protecting structure according to claim 1, wherein the gabion structure (5) is arranged above an old road hard road shoulder (4), a first precast concrete guardrail (2) is arranged on one side of the gabion structure (5) above the old road (1), and a temporary drainage ditch (3) is arranged between the first precast concrete guardrail (2) and the gabion structure (5).
4. The road reconstruction and expansion old road longitudinal section lifting, leveling, supporting and protecting structure according to claim 1, wherein the anti-collision facility (12) comprises a second precast concrete guardrail (13) and a socket steel upright (14) at the bottom of the second precast concrete guardrail (13).
5. The road reconstruction and expansion old road longitudinal section lifting leveling supporting and protecting structure according to claim 1, wherein the rectangular steel wire net boxes (8) are woven by galvanized steel wire nets, the inside of the length direction of each gabion structure (5) is equally divided into four grids by the galvanized steel wire nets, and lacing wires (11) are horizontally arranged along the width direction of the gabion structure (5) in each small net box.
6. The road reconstruction and expansion old road longitudinal section lifting leveling support and protection structure according to claim 1, wherein the geotextile bag (10) is made of PET material, has water permeability and is unsealed at the upper part; the unit area mass of the gabion geotechnical bag is more than or equal to 350g/m < 2 >, the tensile strength is more than or equal to 60KN, and the CBR bursting strength is more than or equal to 6KN.
7. The road reconstruction old road longitudinal section lifting leveling supporting and protecting structure according to claim 1, wherein when the old road (1) is lifted by 1.34 m-1.94 m, the old road comprises 1.94m, and the gabion structure (5) adopts 400cm in length, width and height to be 100cm in length to be 30cm in length; when the old road (1) is lifted by 1.94 m-3.5 m, the old road does not contain 1.94m, and the length, width and height dimensions of the gabion structure (5) are 400cm by 200cm by 50cm.
8. The road reconstruction old road longitudinal section lifting leveling supporting and protecting structure according to claim 1, wherein the mesh aperture of the rectangular steel wire net box (8) is 60 x 80mm, the mesh diameter is 2.7mm, the mesh pulling force is not less than 450Mpa, the surface treatment of the mesh adopts hot galvanizing treatment, and the zinc layer is 200-350g/m < 2 >.
9. The road reconstruction old road longitudinal section lifting leveling support and protection structure according to claim 1 or 2, wherein the unscreened crushed stone (6) is of 0-37.5mm specification.
10. The road reconstruction old road longitudinal section lifting leveling support and protection structure according to claim 4 is characterized in that the length of a single guardrail of the second precast concrete guardrail (13) is 400cm, the bottom is 50.3cm wide, the top is 23.5cm wide, the height is 110cm, 4 socket holes with the depth of 25cm are reserved at equal intervals at the bottom of the guardrail, and the socket holes are used for being matched with the socket steel upright posts (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320930406.4U CN220724752U (en) | 2023-04-23 | 2023-04-23 | Road rebuilding and expanding old road vertical section lifting and leveling supporting and protecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320930406.4U CN220724752U (en) | 2023-04-23 | 2023-04-23 | Road rebuilding and expanding old road vertical section lifting and leveling supporting and protecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220724752U true CN220724752U (en) | 2024-04-05 |
Family
ID=90502517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320930406.4U Active CN220724752U (en) | 2023-04-23 | 2023-04-23 | Road rebuilding and expanding old road vertical section lifting and leveling supporting and protecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220724752U (en) |
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2023
- 2023-04-23 CN CN202320930406.4U patent/CN220724752U/en active Active
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