CN115478457A - Wide structure is pieced together to old way - Google Patents
Wide structure is pieced together to old way Download PDFInfo
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- CN115478457A CN115478457A CN202211134950.4A CN202211134950A CN115478457A CN 115478457 A CN115478457 A CN 115478457A CN 202211134950 A CN202211134950 A CN 202211134950A CN 115478457 A CN115478457 A CN 115478457A
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- retaining wall
- road
- shaped
- top surface
- existing retaining
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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
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
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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
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/227—Gutters; Channels ; Roof drainage discharge ducts set in sidewalks
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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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- 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)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses an old road widening structure which comprises an existing retaining wall, wherein an L-shaped stop block is arranged at the top end of the existing retaining wall, the L-shaped stop block comprises an upright short edge and a transverse edge connected with the lower end of the short edge, and one end, which is not connected with the short edge, of the transverse edge is in contact with an old road; the top surface of the short edge is flush with the road surface, the width of the top surface is consistent with that of the original soil road shoulder, and the width of the top surface is not less than 50cm; the thickness of the transverse edge is 30-50 cm, and the transverse edge exceeds the range of the fracture angle by not less than 50cm; the height of the L-shaped check block is not more than 2m, and a gravel cushion layer is arranged at the bottom end of the L-shaped check block. Aiming at the condition that the splicing range does not exceed that of the existing retaining wall, the L-shaped stop block is arranged at the top end of the existing retaining wall, so that the splicing treatment of the old road is effectively realized, the disturbance and the damage of the existing retaining wall and the embankment in the conventional scheme are avoided, the structure is convenient to construct, the existing traffic is not influenced, the safety risk is small, and the construction cost is low.
Description
Technical Field
The invention relates to the field of road engineering, in particular to an old road widening structure.
Background
The conventional scheme for widening the roadbed needs to implement the splicing construction of the roadbed and the road surface after the disturbance and the damage of the existing retaining wall and embankment. The white sand intercommunicated type stereo crossing and the provincial road 274 are arranged on the highway from the middle mountain to the flat road for traffic conversion, widening and gradual change sections are required to be arranged at the crossing positions of the white sand intercommunicated type stereo crossing and the provincial road 274, the current traffic flow of the provincial road 274 is large, buildings are arranged on the right side of the current road, a embankment type retaining wall is arranged on the left side of the current road, the expansion space is limited, and if a formed roadbed and the retaining wall are forcibly excavated, the current provincial road is inevitably influenced, the construction organization is difficult, the potential safety hazard is large, and the construction cost is high.
The Chinese utility model publication No. CN205934629U discloses an existing retaining wall section roadbed widening and heightening structure, which comprises a cast-in-situ bored pile, a stand column, a cast-in-situ plate, an L-shaped precast plate, bubble concrete, a reinforcing mesh, an original retaining wall, an original embankment, a step and the like, wherein the top of the cast-in-situ bored pile is provided with a stand column platform, and the stand column is poured on the stand column platform; the original retaining wall and the upright post are provided with cast-in-place plates, the outer edges of the cast-in-place plates are provided with anti-skidding blocks, the L-shaped precast slabs are arranged on the cast-in-place plates and are matched with the support to form a step type slope structure, bubble concrete is poured on the cast-in-place plates, and reinforcing mesh sheets are arranged layer by layer. The structure is mainly aimed at the condition that the splicing width range exceeds that of the existing retaining wall, two cast-in-situ piles are arranged on the outer side of the existing retaining wall, stand columns are arranged on the cast-in-situ piles, cast-in-situ plates are arranged on the original retaining wall and the stand columns, and the cast-in-situ plates are poured with bubble concrete to realize the splicing width. However, the structure is not applicable to the situation that the splicing width range does not exceed that of the existing retaining wall, and has obvious disadvantages in the aspects of economy, construction convenience, construction period and the like.
Disclosure of Invention
The invention aims to provide an old road widening structure, aiming at the condition that the widening range does not exceed the existing retaining wall, the L-shaped stop block is arranged at the top end of the retaining wall of the existing embankment, so that the widening treatment of the old road is effectively realized, the disturbance and the damage to the existing retaining wall and the embankment in the conventional scheme are avoided, the structure is convenient to construct, the existing traffic is not influenced, the safety risk is small, and the construction cost is lower.
In order to realize the purpose, the technical scheme of the invention is as follows: an old road widening structure comprises an existing retaining wall, wherein an L-shaped stop block is arranged at the top end of the existing retaining wall, the L-shaped stop block comprises an upright short edge and a transverse edge connected with the lower end of the short edge, and one end, which is not connected with the short edge, of the transverse edge is in contact with the old road; the top surface of the short edge is flush with the road surface, the width of the top surface is consistent with that of the original soil road shoulder, and the width of the top surface is not less than 50cm; the thickness of the transverse edge is 30-50 cm, and the transverse edge exceeds the range of the fracture angle by not less than 50cm; the height of the L-shaped check block is not more than 2m, and a gravel cushion layer is arranged at the bottom end of the L-shaped check block.
Therefore, the L-shaped stop block is arranged at the top end of the existing retaining wall, so that the 'heightening' treatment of the existing retaining wall can be effectively realized, the width splicing of the old road can be realized on the premise of not disturbing the existing retaining wall, and the existing traffic is not influenced; meanwhile, the L-shaped stop block can isolate the transmission of upper soil pressure and driving load to the maximum extent, and can ensure the stable structure of the existing retaining wall; the L type dog bottom is provided with the rubble bed course, has effectively improved ground bearing capacity to can be to the whole coordinated deformation of L type dog, through the linking with the outlet pipe, also can play better drainage effect. The invention aims at the condition that the splicing range does not exceed the existing retaining wall, can avoid the disturbance and the damage to the existing retaining wall and the embankment in the conventional scheme, has convenient construction, small safety risk and lower construction cost.
Furthermore, the L-shaped stop block is of a reinforced concrete structure and is cast by C30 concrete.
Further, the top surface of the L-shaped block is an outward inclined slope surface, and the slope of the slope surface is 3%.
Furthermore, the gravel cushion layer adopts a 15cm graded gravel cushion layer.
Further, rubble bed course bottom is provided with the outlet pipe, the outlet pipe extends to the side that the road surface was kept away from to existing barricade.
Furthermore, a steel sleeve is vertically pre-embedded in the top of the L-shaped stop block, the upper end of the steel sleeve is flush with the top surface of the L-shaped stop block, and a bottom steel plate is arranged at the bottom end of the steel sleeve.
Compared with the prior art, the invention has the beneficial effects that:
1. aiming at the condition that the splicing width range does not exceed that of the existing retaining wall, the L-shaped stop block is arranged on the existing retaining wall, so that the existing retaining wall and the roadbed can be prevented from being damaged when the old road is spliced to be wide, the old road is spliced to be wide under the condition that the current traffic is not influenced, and the safety, the economy and the construction convenience are good.
2. The graded broken stone cushion layer is arranged at the bottom end of the L-shaped block, so that the bearing capacity of the foundation is effectively improved, the L-shaped block can be integrally and coordinately deformed, and a better drainage effect can be achieved through the connection with the water drain pipe.
Drawings
FIG. 1 is a schematic view of a current road engineering situation;
FIG. 2 is a diagram illustrating an old road widening according to an embodiment of the present invention;
FIG. 3 is a schematic view of an L-shaped stop according to an embodiment of the present invention;
FIG. 4 is a reinforcement diagram of an L-shaped block according to an embodiment of the present invention;
fig. 5 is a large drawing of a reserved steel sleeve at the top of an L-shaped stop according to an embodiment of the invention.
In the figure, 1, an existing retaining wall; 2. an L-shaped stop block; 3. a gravel cushion layer; 4. a drain pipe; 5. splicing the pavement structure; 11. an old road embankment; 12. old road side slope; 13. original soil road shoulders; 14. an original pavement structure layer; 15. a building; 16. a drainage ditch; 17. a ground line; 18. a corrugated beam column; 21. reinforcing steel bars; 22. a steel sleeve; 23. a bottom steel plate.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments.
The embodiment depends on the Zhongshan to the open-flat highway. As shown in fig. 1, in view of the current situation of a large traffic flow in a provincial road 274, a building 15 is present on the right side of the current road, and an embankment-type existing retaining wall 1 is present on the left side of the current road, so that the expansion space is limited. The wide structure is pieced together to old way that this embodiment provided, including existing barricade 1, 1 top of existing barricade is provided with L type dog 2, L type dog 2 includes that two are the lateral surface that the L type is connected and two are L type and connect the medial surface, 2 lateral surfaces of L type dog with the side that the road surface was kept away from to existing barricade 1 flushes, another lateral surface with 1 top contact of existing barricade, as shown in fig. 2.
As shown in fig. 4, the L-shaped stopper 2 has a reinforced concrete structure, in which a plurality of reinforcing bars 21 are disposed, and is formed by casting C30 concrete.
As shown in fig. 2 and 3, the L-shaped block 2 includes a vertical short side and a transverse side connected with the lower end of the short side, and one end of the transverse side, which is not connected with the short side, contacts the old road; the top surface of the short side is flush with the road surface, the width A of the top surface is consistent with the width of the original soil road shoulder 13, and the width A of the top surface is not less than 50cm; the thickness h of the transverse edge is 30-50 cm, and the range C beyond the fracture angle theta in the transverse direction is not less than 50cm; the height H of the L-shaped block 2 is not more than 2m. Where H denotes the height of the L-shaped stopper 2, a denotes the top width of the short side, H denotes the thickness of the lateral side, C denotes the lateral side is out of the range of the fracture angle in the lateral direction, and θ denotes the fracture angle.
In the embodiment, specifically, considering matching with a guardrail foundation, the width a of the top surface of the short side is 75cm; the thickness h of the bottom of the transverse edge is 50cm, and the range C beyond the fracture angle is 50cm.
Further, to facilitate drainage, the top surface is an outward sloping surface with a slope of 3%.
As shown in fig. 2 and 3, a broken stone cushion layer 3 is arranged at the bottom end of the L-shaped block 2, and specifically, the broken stone cushion layer 3 is a 15cm graded broken stone cushion layer, which is beneficial to improving the bearing capacity and coordinating deformation. Furthermore, the bottom of the gravel cushion 3 is provided with a drain pipe 4, and the drain pipe 4 extends to the side of the existing retaining wall 1 far away from the road surface to drain water into a drainage ditch 16 positioned on the outer side of the existing retaining wall 1, so that a better drainage effect can be achieved.
Further, in order to facilitate cross installation and implementation, a steel sleeve 22 is vertically embedded in the top of the L-shaped stop block 2, the upper end of the steel sleeve 22 is flush with the top surface of the L-shaped stop block 2, and a bottom steel plate 23 is arranged at the bottom end of the steel sleeve 22. Meanwhile, the anticorrosion treatment is performed to ensure that the subsequent corrugated beam upright posts 18 are convenient to apply, as shown in fig. 4 and 5.
The construction method of the embodiment comprises the following steps:
s1, construction preparation, including quality evaluation of the existing retaining wall 1, fracture angle range calculation, traffic control and the like;
s2, construction lofting;
s3, treating the original road foundation pavement, excavating an old road side slope 12, excavating an original soil (hard) road shoulder, and reserving an L-shaped stop block 2 as a construction condition;
s4, constructing a broken stone cushion layer 3 at the bottom of the L-shaped check block 2;
s5, constructing the L-shaped stop block 2;
s6, embedding a steel sleeve 22 at the top of the L-shaped stop block 2, and meanwhile, performing anticorrosion treatment to reserve a guardrail construction condition;
s7, constructing a spliced pavement structure 5, and overlapping each layer of the pavement according to the specified requirements, wherein the asphalt and cement concrete pavements have different requirements;
and S8, opening traffic.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. The old road widening structure is characterized by comprising an existing retaining wall (1), wherein an L-shaped stop block (2) is arranged at the top end of the existing retaining wall (1), the L-shaped stop block (2) comprises an upright short side and a transverse side connected with the lower end of the short side, and one end of the transverse side, which is not connected with the short side, is in contact with an old road; the top surface of the short side is flush with the road surface, the width (A) of the top surface is consistent with the width of the original soil road shoulder (13), and the width (A) of the top surface is not less than 50cm; the thickness (h) of the transverse edge is 30-50 cm, and the transverse edge exceeds the fracture angle range (C) by not less than 50cm; the height (H) of the L-shaped check block (2) is not more than 2m, and a broken stone cushion layer (3) is arranged at the bottom end of the L-shaped check block (2).
2. The old road widening structure according to claim 1, wherein the L-shaped stoppers (2) are of a reinforced concrete structure and are cast by C30 concrete.
3. The widening structure for old roads according to claim 1, wherein the top surface of the L-shaped block (2) is an outward slope with a slope of 3%.
4. The old road widening structure according to claim 1, wherein a 15cm graded gravel cushion is adopted as the gravel cushion (3).
5. The old road widening structure according to claim 1 or 4, wherein a drain pipe (4) is arranged at the bottom of the gravel cushion layer (3), and the drain pipe (4) extends to the side, away from the road surface, of the existing retaining wall (1).
6. The used road widening structure according to claim 1, wherein a steel sleeve (22) is vertically embedded in the top of the L-shaped stop block (2), the upper end of the steel sleeve (22) is flush with the top surface of the L-shaped stop block (2), and a bottom steel plate (23) is arranged at the bottom end of the steel sleeve (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211134950.4A CN115478457A (en) | 2022-09-19 | 2022-09-19 | Wide structure is pieced together to old way |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211134950.4A CN115478457A (en) | 2022-09-19 | 2022-09-19 | Wide structure is pieced together to old way |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115478457A true CN115478457A (en) | 2022-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211134950.4A Pending CN115478457A (en) | 2022-09-19 | 2022-09-19 | Wide structure is pieced together to old way |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003119703A (en) * | 2001-10-12 | 2003-04-23 | Pacific Consultants Co Ltd | Method for widening road having retaining wall |
| JP2004108088A (en) * | 2002-09-20 | 2004-04-08 | Nishi Nippon Sekkei:Kk | Road widening method, and structure of widened road |
| CN107386317A (en) * | 2017-07-03 | 2017-11-24 | 浙江大学城市学院 | Foam concrete lightweight barricade and construction method are excavated after a kind of first precompressed of deep ultra-soft soil |
| CN208088040U (en) * | 2018-02-10 | 2018-11-13 | 山东省交通规划设计院 | A kind of widened structure applied to mountain highway barricade section |
| CN111827034A (en) * | 2020-07-28 | 2020-10-27 | 中铁二院工程集团有限责任公司 | Wide integrative structure of consolidating of existing highway transformation engineering group |
| CN114687263A (en) * | 2022-04-11 | 2022-07-01 | 宁波市交通规划设计研究院有限公司 | Prefabricated assembly type roadbed widening structure and construction method |
-
2022
- 2022-09-19 CN CN202211134950.4A patent/CN115478457A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003119703A (en) * | 2001-10-12 | 2003-04-23 | Pacific Consultants Co Ltd | Method for widening road having retaining wall |
| JP2004108088A (en) * | 2002-09-20 | 2004-04-08 | Nishi Nippon Sekkei:Kk | Road widening method, and structure of widened road |
| CN107386317A (en) * | 2017-07-03 | 2017-11-24 | 浙江大学城市学院 | Foam concrete lightweight barricade and construction method are excavated after a kind of first precompressed of deep ultra-soft soil |
| CN208088040U (en) * | 2018-02-10 | 2018-11-13 | 山东省交通规划设计院 | A kind of widened structure applied to mountain highway barricade section |
| CN111827034A (en) * | 2020-07-28 | 2020-10-27 | 中铁二院工程集团有限责任公司 | Wide integrative structure of consolidating of existing highway transformation engineering group |
| CN114687263A (en) * | 2022-04-11 | 2022-07-01 | 宁波市交通规划设计研究院有限公司 | Prefabricated assembly type roadbed widening structure and construction method |
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