CN112761039A - Road shoulder pile plate wall large-deformation reinforcing structure and construction method - Google Patents
Road shoulder pile plate wall large-deformation reinforcing structure and construction method Download PDFInfo
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- CN112761039A CN112761039A CN201911062715.9A CN201911062715A CN112761039A CN 112761039 A CN112761039 A CN 112761039A CN 201911062715 A CN201911062715 A CN 201911062715A CN 112761039 A CN112761039 A CN 112761039A
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 96
- 238000010276 construction Methods 0.000 title claims abstract description 14
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 35
- 239000002689 soil Substances 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 230000002787 reinforcement Effects 0.000 claims description 11
- 239000004567 concrete Substances 0.000 claims description 9
- 238000005553 drilling Methods 0.000 claims description 9
- 238000004873 anchoring Methods 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims 2
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
A large-deformation reinforcing structure for a road shoulder pile plate wall and a construction method are provided, so that deformation of reinforcing piles is effectively controlled, construction is convenient, and economical efficiency is good. The road embankment filling structure comprises existing reinforcing piles, an embankment filling body and existing soil retaining plates, wherein the existing reinforcing piles are arranged at intervals along the road direction, the lower portions of the existing reinforcing piles are embedded into a foundation, the existing soil retaining plates are arranged between adjacent existing reinforcing piles, and the embankment filling body is filled on the foundation on the inner sides of the existing reinforcing piles and the existing soil retaining plates in a layered mode. The reinforced concrete stress beam abutting against each existing reinforcing pile is arranged on the foundation on the outer side of each existing reinforcing pile, a supporting body is filled in a gap between the rear wall of each reinforced concrete stress beam and the front wall of each existing retaining plate between every two adjacent existing reinforcing piles, reinforcing anchor cables with the axes inclined downwards are arranged among the reinforcing piles at intervals, the inner ends of the reinforcing anchor cables penetrate through the supporting bodies and the retaining plates to be anchored in the foundation, and the outer ends of the reinforcing anchor cables are anchored on the reinforced concrete stress beams after prestress is applied.
Description
Technical Field
The invention relates to geotechnical engineering, in particular to a large-deformation reinforcing structure for a road shoulder pile plate wall and a construction method.
Background
The application of the road shoulder pile plate wall in the slope contraction and reinforcement of the embankment is very wide, but some problems also occur in the engineering practice: (1) when the method is applied to a soil foundation, the overconsolidation pile generates large deformation due to the non-uniformity and uncertainty of the foundation, the deterioration of the surrounding environment, or the problem of construction quality and the like; (2) the soil foundation can sink due to the weight of the embankment filling body, and the foundation outside the reinforcing pile does not sink, so that concave deformation can be formed on the foundation inside the reinforcing pile, water is accumulated in the concave foundation and the foundation can be softened, and as a result, the foundation is rich in water and the reinforcing pile deforms greatly; (5) when the pile is applied to a steep slope roadbed, the steep slope is affected by external disturbance to cause that the protective front edge of the reinforcing pile is not enough, so that the reinforcing pile generates large deformation. When the deformation of the reinforcing pile cannot tend to be stable and the condition of earth filling back pressure is not available, an effective road shoulder pile plate wall large deformation reinforcing structure and a construction method must be provided, and the application has the characteristics of convenience in construction, capability of effectively controlling deformation, economy, environmental protection, contribution to popularization and the like.
Disclosure of Invention
The invention aims to provide a large-deformation reinforcing structure for a road shoulder pile plate wall, so that the deformation of a reinforcing pile is effectively controlled, the construction is convenient, and the economical efficiency is good.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention relates to a large-deformation reinforcing structure of a road shoulder pile plate wall, which comprises existing reinforcing piles, a road embankment filling body and existing soil retaining plates, wherein the existing reinforcing piles are arranged at intervals along the road direction, the lower parts of the existing reinforcing piles are embedded into a foundation, the existing soil retaining plates are arranged between the adjacent existing reinforcing piles, and the road embankment filling body is filled on the foundation on the inner sides of the existing reinforcing piles and the existing soil retaining plates in a layered mode, and the large-deformation reinforcing structure is characterized in that: the reinforced concrete stress beam abutting against each existing reinforcing pile is arranged on the foundation on the outer side of each existing reinforcing pile, a supporting body is filled in a gap between the rear wall of each reinforced concrete stress beam and the front wall of each existing retaining plate between every two adjacent existing reinforcing piles, reinforcing anchor cables with the axes inclined downwards are transversely arranged among the reinforcing piles at intervals, the inner ends of the reinforcing anchor cables penetrate through the supporting bodies and the retaining plates to be anchored in the foundation, and the outer ends of the reinforcing anchor cables are anchored on the reinforced concrete stress beams after prestress is applied.
The reinforcing anchor cable penetrates through a water drainage hole of the existing soil retaining plate at the lower layer, the front part of the reinforcing anchor cable is sleeved into a steel pipe with the axes coincident with each other, and the steel pipe extends to the back of the water drainage hole from the front side wall of the reinforced concrete stress beam.
Another technical problem to be solved by the present invention is to provide a method for constructing a large deformation reinforcing structure of a road shoulder pile plate wall, which includes the following steps:
firstly, reaming machinery is adopted to ream the drain holes of the first row of existing retaining plates on the foundation, so that the aperture of the drain holes meets the design requirement;
secondly, drilling an anchor cable into the foundation according to a certain downward inclination angle by a geological drilling machine after penetrating through the water drainage hole after reaming, and drilling while following the anchor cable until the anchor cable reaches a design position if the foundation is easy to collapse;
thirdly, placing the reinforced anchor cable in the anchor cable drill hole to the bottom of the hole, and grouting the anchor cable drill hole with pressure;
fourthly, sleeving the exposed section of the reinforced anchor cable into a steel pipe, and inserting the rear end of the steel pipe into the water drainage hole;
binding a reinforced concrete stress beam reinforcement cage on the foundation outside the existing reinforcing pile, and fixedly connecting a steel pipe with the reinforcement cage, wherein the axis of the steel pipe is coincident with the axis of the reinforcing anchor cable;
sixthly, pouring concrete of the reinforced concrete stress beam;
seventhly, backfilling gaps between the reinforced concrete stress beam and the existing retaining plates by using concrete or mortar rubbles to form a support body;
and stretching the reinforcing anchor cable to apply prestress after the strength of the reinforced concrete stressed beam, the support body and the reinforcing anchor cable grouting body reaches 90% of the design strength, and performing locking and anchoring on the reinforced concrete stressed beam.
The reinforced concrete stress beam is arranged on the foundation outside the existing reinforcing pile and is abutted against the existing reinforcing pile, the reinforced concrete stress beam has inward horizontal tension under the action of the reinforcing anchor cable, the reinforced concrete stress beam is effectively contacted with the existing reinforcing pile so as to effectively transfer the tension to the existing reinforcing pile, and the existing reinforcing pile is subjected to inward constraint force so as to effectively control the outward unfavorable deformation; the construction is convenient, the deformation control effect is good, and the method has the characteristics of economy and environmental protection.
Drawings
The specification includes the following three drawings:
FIG. 1 is a schematic cross-sectional view of a large deformation reinforcing structure for a road shoulder pile sheet wall according to the present invention;
FIG. 2 is a schematic plan view of a large deformation reinforcing structure for a road shoulder pile sheet wall according to the present invention;
fig. 3 is an enlarged schematic view of a portion a of fig. 2.
The component names and corresponding labels are shown in the figure: the concrete foundation comprises existing reinforcing piles 1, an embankment filling body 2, existing soil retaining plates 3, reinforcing anchor cables 4, a supporting structure 5, a stress beam 6, steel pipes 7, water drainage holes 8 and a foundation A.
Detailed Description
The invention is further described with reference to the following figures and examples:
referring to fig. 1 and 2, the large deformation reinforcing structure for the road shoulder pile plate wall of the invention comprises existing reinforcing piles 1, embankment filling bodies 2 and existing retaining plates 3, wherein the existing reinforcing piles 1 are arranged at intervals along the road direction, the lower parts of the existing reinforcing piles are buried in a foundation a, the existing retaining plates 3 are arranged between the adjacent existing reinforcing piles 1, and the embankment filling bodies 2 are filled on the foundation a on the inner sides of the existing reinforcing piles 1 and the existing retaining plates 3 in layers. The reinforced concrete stress beam 6 abutting against each existing reinforcing pile 1 is arranged on the foundation A on the outer side of each existing reinforcing pile 1, a supporting body 5 is filled in a gap between the rear wall of each reinforced concrete stress beam 6 and the front wall of each existing soil retaining plate 3 between every two adjacent existing reinforcing piles 1, reinforcing anchor cables 4 with the axes inclined downwards are transversely arranged among the reinforcing piles 1 at intervals, the inner ends of the reinforcing anchor cables 4 penetrate through the supporting bodies 5 and the soil retaining plates 3 and are anchored in the foundation A, and the outer ends of the reinforcing anchor cables 4 are anchored on the reinforced concrete stress beams 6 after prestress is applied. The reinforced concrete stress beam 6 has inward horizontal tension under the action of the reinforcing anchor cables 4, the reinforced concrete stress beam 6 is effectively contacted with the existing reinforcing pile 1, so that the tension can be effectively transmitted to the existing reinforcing pile 1, the existing reinforcing pile 1 is subjected to inward constraint force, the outward unfavorable deformation can be effectively controlled, and the deformation control effect is good.
Referring to fig. 3, the reinforcing anchor lines 4 pass through the drain holes 8 of the lower existing soil guard plate 3. In order to keep the reinforced anchor cable 4 straight, the front part of the reinforced anchor cable 4 is sleeved into a steel pipe 7 with the axes coincident with each other, and the steel pipe 7 extends from the front side wall of the reinforced concrete stress beam 6 to the back of the water drainage hole 8. The support body 5 may be formed of backfilled concrete or grouted rubble.
Referring to fig. 1 to 3, the construction method of the large deformation reinforcing structure of the road shoulder pile plate wall of the invention comprises the following steps:
firstly, a hole expanding machine is adopted to expand the drain holes 8 of the first row of the existing retaining plates 3 on the foundation A, so that the hole diameter of the drain holes meets the design requirement;
secondly, drilling an anchor cable into the foundation A according to a certain downward inclination angle by a geological drilling machine after penetrating through the water drainage hole after reaming, and drilling while following the anchor cable until the anchor cable reaches a design position if the foundation is easy to collapse;
thirdly, placing the reinforced anchor cable 4 in the anchor cable drill hole to the bottom of the hole, and grouting the anchor cable drill hole with pressure;
fourthly, the exposed section of the reinforced anchor cable 4 is sleeved into the steel pipe 7, and the rear end of the steel pipe 7 is inserted into the water drainage hole 8;
binding a reinforcement cage of a reinforced concrete stress beam 6 on the foundation A outside the existing reinforcing pile 1, fixedly connecting a steel pipe 7 with the reinforcement cage, and enabling the axis of the steel pipe 7 to coincide with the axis of the reinforcing anchor cable 4;
sixthly, pouring concrete of the reinforced concrete stress beam 6;
seventhly, backfilling a gap between the reinforced concrete stress beam 6 and the existing retaining plate 3 by using concrete or mortar rubbles to form a support body 5;
eighthly, after the strength of the reinforced concrete stressed beam 6, the support body 5 and the reinforcing anchor cable 4 grouting body reaches 90% of the design strength, tensioning the reinforcing anchor cable 4 to apply prestress, and locking and anchoring on the reinforced concrete stressed beam 6.
The foregoing is only illustrative of the principles of the present invention, and is not intended to limit the invention to the specific constructions and construction methods shown and described, and accordingly all modifications and equivalents may be resorted to, falling within the scope of the invention.
Claims (4)
1. The utility model provides a big reinforced structure that warp of curb pilework, curb pilework (2) and existing fender native board (3) are drawn together to existing reinforcement stake (1), embankment filler (2), existing reinforcement stake (1) sets up along the line direction interval, its lower part is buried in ground (A), existing fender native board (3) are established between adjacent existing reinforcement stake (1), embankment filler (2) are filled in the existing reinforcement stake (1), on the inboard ground (A) of existing fender native board (3) in layers, characterized by: the reinforced concrete bearing beam (6) abutting against each existing reinforcing pile (1) is arranged on the foundation (A) on the outer side of each existing reinforcing pile (1), supporting bodies (5) are filled in gaps between the rear wall of each reinforced concrete bearing beam (6) and the front wall of each existing soil retaining plate (3) between every two adjacent existing reinforcing piles (1), reinforcing anchor cables (4) with the axes inclined downwards are transversely arranged among the reinforcing piles (1), the inner ends of the reinforcing anchor cables (4) penetrate through the supporting bodies (5) and the soil retaining plates (3) and are anchored in the foundation (A), and the outer ends of the reinforcing anchor cables (4) are anchored on the reinforced concrete bearing beams (6) after prestress is applied.
2. The large-deformation reinforcing structure for the road shoulder pile plate wall as claimed in claim 1, wherein: the reinforcing anchor cable (4) penetrates through a water drainage hole (8) of the existing soil retaining plate (3) at the lower layer, the front part of the reinforcing anchor cable (4) is sleeved into a steel pipe (7) with the axes coincident with each other, and the steel pipe (7) extends to the back of the water drainage hole (8) from the front side wall of the reinforced concrete stress beam (6).
3. The large-deformation reinforcing structure for the road shoulder pile plate wall as claimed in claim 1, wherein: the support body (5) is formed by backfilled concrete or grouted rubble.
4. A construction method of a road shoulder pile plate wall large deformation reinforcing structure as claimed in any one of claims 1 to 3, comprising the following steps:
firstly, a hole expanding machine is adopted to expand the drain holes (8) of the first row of existing retaining plates (3) on the foundation (A) so that the hole diameter of the drain holes meets the design requirement;
secondly, drilling an anchor cable into the foundation (A) according to a certain downward inclination angle by penetrating a drainage hole after reaming by a geological drilling machine, and drilling while following the anchor cable until the anchor cable reaches a design position if the foundation is easy to collapse;
thirdly, placing a reinforced anchor cable (4) in the anchor cable drill hole to the bottom of the hole, and grouting the anchor cable drill hole with pressure;
fourthly, the exposed section of the reinforced anchor cable (4) is sleeved into the steel pipe (7), and the rear end of the steel pipe (7) is inserted into the water drainage hole (8);
binding a reinforcement cage of a reinforced concrete stressed beam (6) on the foundation (A) outside the existing reinforcing pile (1), fixedly connecting a steel pipe (7) with the reinforcement cage, and enabling the axis of the steel pipe (7) to coincide with the axis of a reinforcing anchor cable (4);
sixthly, pouring concrete of the reinforced concrete stress beam (6);
seventhly, backfilling a gap between the reinforced concrete stress beam (6) and the existing retaining plate (3) by adopting concrete or mortar rubbles to form a support body (5);
and eighthly, after the strength of the reinforced concrete stressed beam (6), the support body (5) and the grouting body of the reinforcing anchor cable (4) reaches 90% of the design strength, tensioning the reinforcing anchor cable (4) to apply prestress, and locking and anchoring on the reinforced concrete stressed beam (6).
Priority Applications (1)
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CN201911062715.9A CN112761039A (en) | 2019-11-03 | 2019-11-03 | Road shoulder pile plate wall large-deformation reinforcing structure and construction method |
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CN201911062715.9A CN112761039A (en) | 2019-11-03 | 2019-11-03 | Road shoulder pile plate wall large-deformation reinforcing structure and construction method |
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Citations (10)
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---|---|---|---|---|
FR2796971A1 (en) * | 1999-07-30 | 2001-02-02 | Joseph Golcheh | Method for reinforcing retaining wall involves reinforcing elements having tractive working part with attaching part linked to module of wall, and mobilizing part placed inside resistant zone |
JP2003089103A (en) * | 2001-09-19 | 2003-03-25 | Free Kogyo Kk | Wooden panel and its using method |
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CN103334421A (en) * | 2013-07-05 | 2013-10-02 | 郭红标 | Pre-stressed anchor cable slab-pile wall |
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-
2019
- 2019-11-03 CN CN201911062715.9A patent/CN112761039A/en active Pending
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FR2796971A1 (en) * | 1999-07-30 | 2001-02-02 | Joseph Golcheh | Method for reinforcing retaining wall involves reinforcing elements having tractive working part with attaching part linked to module of wall, and mobilizing part placed inside resistant zone |
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