CN112048959A - Transverse grouting roadbed reinforcing structure and roadbed repairing method - Google Patents

Transverse grouting roadbed reinforcing structure and roadbed repairing method Download PDF

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Publication number
CN112048959A
CN112048959A CN202011018756.0A CN202011018756A CN112048959A CN 112048959 A CN112048959 A CN 112048959A CN 202011018756 A CN202011018756 A CN 202011018756A CN 112048959 A CN112048959 A CN 112048959A
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China
Prior art keywords
roadbed
pile
root
road
grouting
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Pending
Application number
CN202011018756.0A
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Chinese (zh)
Inventor
谭玲
岳伟杰
卢辉
阎宗岭
徐峰
李正凯
林海腾
陈超
刘中帅
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China Merchants Chongqing Communications Research and Design Institute Co Ltd
Guangzhou Expressway Co Ltd
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China Merchants Chongqing Communications Research and Design Institute Co Ltd
Guangzhou Expressway Co Ltd
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Application filed by China Merchants Chongqing Communications Research and Design Institute Co Ltd, Guangzhou Expressway Co Ltd filed Critical China Merchants Chongqing Communications Research and Design Institute Co Ltd
Priority to CN202011018756.0A priority Critical patent/CN112048959A/en
Publication of CN112048959A publication Critical patent/CN112048959A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C3/00Foundations for pavings
    • E01C3/04Foundations produced by soil stabilisation
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/10Deep foundations
    • E02D27/12Pile foundations
    • E02D27/14Pile framings, i.e. piles assembled to form the substructure
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/34Concrete or concrete-like piles cast in position ; Apparatus for making same
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0004Synthetics
    • E02D2300/0018Cement used as binder
    • E02D2300/002Concrete

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The invention discloses a transverse grouting roadbed reinforcing structure and a roadbed repairing method, wherein the transverse grouting roadbed reinforcing structure comprises the following components: road bed, root stake group, soft road shoulder and road surface, the road surface sets up on the road bed, soft road shoulder sets up the road bed with the road surface both sides, at least be provided with on the soft road shoulder of road bed one side root stake group, root stake group includes a plurality of root stakes that interconnect, the root stake is followed the side of soft road shoulder extends to the position that the disease takes place for the road bed. The invention sets a plurality of root piles extending to the damaged part of the roadbed to reinforce the roadbed, the grouting reinforcement range of the root piles covers the damaged part of the roadbed, the roadbed reinforcement is carried out under the conditions of not damaging the road surface structure and not interrupting the traffic, the state deterioration of the roadbed structure is prevented, and the road surface damage of the roadbed is repaired.

Description

Transverse grouting roadbed reinforcing structure and roadbed repairing method
Technical Field
The invention relates to the technical field of roadbed repair, in particular to a transverse grouting roadbed reinforcing structure and a roadbed repair method.
Background
Along with the gradual improvement of the road network in China, the project diseases needing to be treated in the operation and maintenance process of the road are increased, and the diseases such as uneven settlement of a roadbed, sliding of a roadbed side slope, cracking of the roadbed and the pavement are generated. In the process of preventing and treating highway diseases, the grouting reinforcement repair technology is flexible, convenient and quick to construct, can be suitable for various complex geological conditions, and is commonly used for preventing and treating diseases of highway subgrades, pavements, side slopes, tunnels and the like.
At present, the vertical drilling grouting technology is successfully applied to reinforcement, seepage prevention and water stop projects under various stratum conditions, shows good superiority, and has many successful applications in highway subgrade pavement reinforcement and disease control projects. But the vertical drilling destroys the pavement structure and the integrity thereof, and after grouting reinforcement is completed, traffic needs to be interrupted to repair the pavement and additionally lay an asphalt surface layer to restore the pavement functionality. In addition, under the action of a driving load, the stress concentration is obvious due to the non-uniformity of materials at the position of a reinforced pavement grouting hole, and the pavement structure is easy to generate new early disease phenomena such as cracking and the like, so that the service function and the service life of the pavement are influenced. Therefore, how to reinforce the roadbed without damaging the pavement structure and interrupting the traffic to prevent the deterioration of the roadbed structure state and repair roadbed and pavement diseases is an urgent technical problem to be solved in the field.
Disclosure of Invention
The invention aims to provide a transverse grouting roadbed reinforcing structure and a roadbed repairing method, which can reinforce a roadbed without damaging a pavement structure and interrupting traffic, prevent the roadbed from non-uniform settlement and roadbed slope slip and repair roadbed pavement cracks.
In order to achieve the above object, the present invention provides a lateral grouting roadbed reinforcement structure, which comprises: road bed, root stake group, soft road shoulder and road surface, the road surface sets up on the road bed, soft road shoulder sets up the road bed with the road surface both sides, at least be provided with on the soft road shoulder of road bed one side root stake group, root stake group includes a plurality of root stakes that interconnect, the root stake is followed the side of soft road shoulder extends to the position that the disease takes place for the road bed.
Optionally, the tree root pile group is a plurality of and is arranged along the soft road shoulder extending direction.
Optionally, root stake group includes a plurality of root stake and pile head concrete pier, pile head concrete pier sets up soft shoulder is last, and is a plurality of root stake one end is passed through pile head concrete pier connects, and is a plurality of the root stake is followed pile head concrete pier is the state of dispersing to the position that the disease takes place for the road bed extends.
Optionally, the included angle between the tree root pile and the horizontal plane is 0-60 degrees.
Optionally, the included angle between the root pile and the cross section of the roadbed is 0-60 degrees.
Optionally, the soft road shoulder is provided with a pile head hole, and the pile head concrete pier is arranged in the pile head hole.
Optionally, a steel bar is arranged in the tree root pile, and one end, close to the pile head hole, of the steel bar is welded and connected.
The invention also provides a transverse grouting roadbed repairing method, which comprises the following steps:
pile holes are drilled from soft road shoulders on one side or two sides of the roadbed to the damaged part of the roadbed, and the pile holes are multiple and extend from one point on the soft road shoulders to the damaged part of the roadbed in a divergent state;
manufacturing a steel bar according to the depth of the pile hole and placing the steel bar in the pile hole;
grouting through the pile hole to form a tree root pile;
welding and connecting one end of the steel bar close to the soft road shoulder;
and pouring concrete at the welding connection part of the steel bars to form the pile head concrete pier.
Optionally, waterless drilling is adopted during pile drilling to avoid water consumption for drilling to aggravate disease development.
Optionally, the included angle between the pile hole and the horizontal plane is 0-60 degrees, and the included angle between the pile hole and the cross section of the roadbed is 0-60 degrees.
In the transverse grouting roadbed reinforcement structure and the roadbed repairing method provided by the invention, the transverse grouting roadbed reinforcement structure comprises: road bed, root stake group, soft road shoulder and road surface, the road surface sets up on the road bed, soft road shoulder sets up the road bed with the road surface both sides, at least be provided with on the soft road shoulder of road bed one side root stake group, root stake group includes a plurality of root stakes that interconnect, the root stake is followed the side of soft road shoulder extends to the position that the disease takes place for the road bed. The invention sets a plurality of root piles extending to the damaged part of the roadbed to reinforce the roadbed, the grouting reinforcement range of the root piles covers the damaged part of the roadbed, the roadbed reinforcement is carried out under the conditions of not damaging the road surface structure and not interrupting the traffic, the state deterioration of the roadbed structure is prevented, and the road surface damage of the roadbed is repaired.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings, which are required to be used in the embodiments, will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.
FIG. 1 is a schematic cross-sectional view of a lateral grouting roadbed reinforcement structure provided by an embodiment of the invention;
fig. 2 is a side view of a lateral grouting roadbed reinforcement structure provided by the embodiment of the invention.
Wherein: 10-roadbed, 101-pile head hole, 102-pile hole, 20-root pile group, 21-root pile, 22-pile head concrete pier, 23-reinforcing steel bar, 30-soft road shoulder and 40-road surface.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
Fig. 1 is a schematic cross-sectional view illustrating a lateral grouting roadbed reinforcement structure according to an embodiment of the invention, and fig. 2 is a side view illustrating the lateral grouting roadbed reinforcement structure according to the embodiment of the invention, and referring to fig. 1 and fig. 2, the lateral grouting roadbed reinforcement structure includes: roadbed 10, root pile group 20, soft road shoulder 30 and road surface 40, the road surface sets up on the roadbed, soft road shoulder 30 sets up roadbed 10 with 40 both sides on road surface, at least be provided with on the soft road shoulder 30 of roadbed 10 one side root pile group 20, root pile group 20 includes a plurality of interconnect's root pile 21, root pile 21 is followed soft road shoulder 30's side extends to the position that the disease takes place for roadbed 10. The invention sets a plurality of root piles 21 extending to the damaged part of the roadbed to reinforce the roadbed, the grouting reinforcement range of the root piles 21 covers the damaged part of the roadbed 10, the roadbed 10 is reinforced under the condition of not damaging the structure of the roadbed 40 and not interrupting the traffic, the structural state of the roadbed 10 is prevented from being deteriorated, and the damaged roadbed and the pavement are repaired.
Referring to fig. 1 and 2, the plurality of root pile groups 20 are arranged along the extending direction of the soft shoulder 30, that is, along the road direction, and the interval between the root pile groups 20 is set to be 3 meters in this embodiment. Root stake group 20 includes a plurality of root stake 21 and a pile head concrete pier 22, pile head concrete pier 22 sets up on the soft road shoulder 30, it is a plurality of root stake 21 one end is passed through pile head concrete pier 22 is connected, and is a plurality of root stake 21 follows pile head concrete pier 22 is the state of dispersing to the position that road bed 10 takes place the disease extends. The included angle between the tree root pile 21 and the horizontal plane is 0-60 degrees, the included angle between the tree root pile 21 and the cross section of the roadbed 10 is 0-60 degrees, namely, a point on the soft road shoulder 30 is used for making a rectangular pyramid towards the direction of a damaged part of the roadbed 10, the vertex of the rectangular pyramid is arranged on the soft road shoulder 30, and the tree root pile 21 is arranged in the range of the lower half part of the rectangular pyramid. Because the tree root piles 21 are arranged in a divergent state, the roadbed can be better reinforced, and roadbed and pavement diseases can be repaired.
Referring to fig. 1 and 2, the soft road shoulder 30 is provided with a pile head hole 101, and the pile head concrete pier 22 is arranged in the pile head hole 101. Be provided with reinforcing bar 23 in the root stake 21, reinforcing bar 23 is close to pile head hole 101 one end welded connection can further improve root stake 21's structural strength through reinforcing bar 23, further consolidates the road bed.
The invention also provides a transverse grouting roadbed repairing method, which is used for reinforcing the roadbed without damaging the pavement structure and interrupting traffic, preventing the roadbed from non-uniform settlement and roadbed slope slippage and repairing roadbed pavement cracks. Firstly, pile holes 102 are drilled from the soft road shoulder 30 on one side or two sides of the roadbed 10 to the damaged part of the roadbed 10, and a plurality of pile holes 102 extend from one point on the soft road shoulder 30 to the damaged part of the roadbed 10 in a divergent state. Specifically, the hole drilled in the soft shoulder 30 from one side or both sides of the roadbed 10 depends on the road width and the position of the damaged part in the roadbed 10, and the grouting reinforcement range of the root pile 21 is determined to cover the damaged part. And (3) when the pile hole 102 is drilled, waterless drilling is adopted to avoid the water for drilling to aggravate the disease development. The included angle between the pile hole 102 and the horizontal plane is 0-60 degrees, the included angle between the pile hole 102 and the cross section of the roadbed 10 is 0-60 degrees, namely, a point on the soft road shoulder 30 is used as a rectangular pyramid towards the direction of a damaged part of the roadbed 10, the vertex of the rectangular pyramid is arranged on the soft road shoulder 30, and the tree root pile 21 is arranged in the lower half part range of the rectangular pyramid. The inside diameter of the stake hole 102 in this embodiment is 100 mm.
After the pile hole 102 is drilled, the reinforcing steel bar 23 is manufactured according to the depth of the pile hole 102, the reinforcing steel bar 23 is placed in the pile hole, the reinforcing steel bar 23 is made of deformed steel with the diameter of 25 mm, and a grouting pipe is installed when the reinforcing steel bar 23 is installed. The pile holes 102 are also grouting holes, chemical grouting is performed through the pile holes 102, grout is uniformly injected into the soil body of the roadbed 10, and the chemical grouting plays roles of penetration filling, compaction consolidation, cementation solidification and the like. After the chemical grouting is finished, thick slurry cement slurry is replaced to form pile forming grouting to form the tree root pile 21. After the root pile 21 is formed, one end of the steel bar 23 close to the soft road shoulder 30 is welded and connected, and concrete is poured at the welding and connecting part of the steel bar 23 to form the pile head concrete pier 22. Further, a pile head hole 101 may be provided on the soft road shoulder 30, and the pile head concrete pier 22 is poured into the pile head hole 101 to form a 500 mm × 500 mm pile head concrete pier 22. The chemical grout of grouting and the tree root piles 21 play roles of inhibiting and treating the diseases of the roadbed 10, improving the stress property of the roadbed, improving the bearing capacity, and inhibiting and relieving the occurrence and development of the diseases such as uneven settlement of the roadbed, side slope slippage of the roadbed, cracking of the roadbed pavement and the like.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims (10)

1. A lateral grouting roadbed reinforcement structure is characterized by comprising: road bed, root stake group, soft road shoulder and road surface, the road surface sets up on the road bed, soft road shoulder sets up the road bed with the road surface both sides, at least be provided with on the soft road shoulder of road bed one side root stake group, root stake group includes a plurality of root stakes that interconnect, the root stake is followed the side of soft road shoulder extends to the position that the disease takes place for the road bed.
2. The lateral grouting roadbed reinforcement structure of claim 1, wherein the root pile group is provided in plurality and along the extending direction of the soft road shoulder.
3. The transverse grouting roadbed reinforcement structure of claim 1, wherein the root pile group comprises a plurality of root piles and pile head concrete piers, the pile head concrete piers are arranged on the soft roadbed, one ends of the plurality of root piles are connected through the pile head concrete piers, and the plurality of root piles extend from the pile head concrete piers to the roadbed in a divergent state.
4. The transverse grouting roadbed reinforcement structure of claim 3, wherein the included angle between the root pile and the horizontal plane is 0-60 degrees.
5. The transverse grouting roadbed reinforcement structure of claim 4, wherein the included angle between the root pile and the cross section of the roadbed is 0-60 degrees.
6. The transverse grouting roadbed reinforcement structure of claim 3, wherein the soft road shoulder is provided with pile head holes, and the pile head concrete piers are arranged in the pile head holes.
7. The transverse grouting roadbed reinforcement structure of claim 6, wherein a steel bar is arranged in the root pile, and one end of the steel bar, which is close to the pile head hole, is welded and connected.
8. A transverse grouting roadbed repairing method is characterized by comprising the following steps:
pile holes are drilled from soft road shoulders on one side or two sides of the roadbed to the damaged part of the roadbed, and the pile holes are multiple and extend from one point on the soft road shoulders to the damaged part of the roadbed in a divergent state;
manufacturing a steel bar according to the depth of the pile hole and placing the steel bar in the pile hole;
grouting through the pile hole to form a tree root pile;
welding and connecting one end of the steel bar close to the soft road shoulder;
and pouring concrete at the welding connection part of the steel bars to form the pile head concrete pier.
9. The method for repairing a laterally grouted roadbed according to claim 8, wherein waterless drilling is adopted when pile holes are drilled so as to avoid the water used for drilling to aggravate the development of diseases.
10. The transverse grouting roadbed repairing method according to claim 8, wherein an included angle between the pile hole and a horizontal plane is 0-60 degrees, and an included angle between the pile hole and a cross section of the roadbed is 0-60 degrees.
CN202011018756.0A 2020-09-24 2020-09-24 Transverse grouting roadbed reinforcing structure and roadbed repairing method Pending CN112048959A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115030660A (en) * 2022-06-22 2022-09-09 应急管理部国家自然灾害防治研究院 Drilling device for grouting reinforcement of liquefied layer inside roadbed slope
CN115110523A (en) * 2022-08-04 2022-09-27 中国水利水电科学研究院 Grouting repair method for integrity defects of screw pile

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102864712A (en) * 2012-10-16 2013-01-09 中铁第四勘察设计院集团有限公司 Method and structure for micro-disturbance renovating of existing high speed railway subgrade deformation disease
CN203296054U (en) * 2013-06-08 2013-11-20 内蒙古科技大学 Side slope reinforcing structure
CN203475490U (en) * 2013-08-29 2014-03-12 中交二公局第四工程有限公司 Root file based foundation reinforcement structure for debris flow gully crossing tunnel
CN104988815A (en) * 2015-07-03 2015-10-21 河海大学 Method for treating post-construction settlement disease of railroad bed
CN109252542A (en) * 2018-11-14 2019-01-22 山东大学 A kind of root pile lightweight barricade and its construction method for road widening
CN212357851U (en) * 2020-09-24 2021-01-15 招商局重庆交通科研设计院有限公司 Transverse grouting roadbed reinforcing structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102864712A (en) * 2012-10-16 2013-01-09 中铁第四勘察设计院集团有限公司 Method and structure for micro-disturbance renovating of existing high speed railway subgrade deformation disease
CN203296054U (en) * 2013-06-08 2013-11-20 内蒙古科技大学 Side slope reinforcing structure
CN203475490U (en) * 2013-08-29 2014-03-12 中交二公局第四工程有限公司 Root file based foundation reinforcement structure for debris flow gully crossing tunnel
CN104988815A (en) * 2015-07-03 2015-10-21 河海大学 Method for treating post-construction settlement disease of railroad bed
CN109252542A (en) * 2018-11-14 2019-01-22 山东大学 A kind of root pile lightweight barricade and its construction method for road widening
CN212357851U (en) * 2020-09-24 2021-01-15 招商局重庆交通科研设计院有限公司 Transverse grouting roadbed reinforcing structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115030660A (en) * 2022-06-22 2022-09-09 应急管理部国家自然灾害防治研究院 Drilling device for grouting reinforcement of liquefied layer inside roadbed slope
CN115110523A (en) * 2022-08-04 2022-09-27 中国水利水电科学研究院 Grouting repair method for integrity defects of screw pile
CN115110523B (en) * 2022-08-04 2024-05-17 中国水利水电科学研究院 Screw pile integrity defect grouting repairing method

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