CN114197496A - Slope reinforcing device of railway roadbed and construction method - Google Patents
Slope reinforcing device of railway roadbed and construction method Download PDFInfo
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- CN114197496A CN114197496A CN202111544964.9A CN202111544964A CN114197496A CN 114197496 A CN114197496 A CN 114197496A CN 202111544964 A CN202111544964 A CN 202111544964A CN 114197496 A CN114197496 A CN 114197496A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/48—Piles varying in construction along their length, i.e. along the body between head and shoe, e.g. made of different materials along their length
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a side slope reinforcing device of a railway roadbed and a construction method, wherein the side slope reinforcing device comprises a reinforced concrete slab, an anchor rod pile, a tree root pile and a concrete foundation; the anchor pile is inserted in the slope surface of the railway roadbed side slope, the reinforced concrete slab is paved on the surface layer of the slope surface, the root pile is inserted in the slope toe and is positioned below the reinforced concrete slab, and a concrete foundation is poured at the slope toe; the anchor rod pile and the tree root pile have the same structure and respectively comprise a grout stopping plate, a trapezoidal sleeve and a pile body steel rail; the grout stopping plate is welded at one end of the pile body steel rail, the trapezoid sleeve is sleeved outside the pile body steel rail and fixed together with the pile body steel rail, the grout stopping plate is provided with a grout injecting hole, concrete is poured into the trapezoid sleeve through the grout injecting hole, and the waist plate of the trapezoid sleeve is provided with a plurality of grout outlet holes.
Description
Technical Field
The invention relates to the field of slope protection engineering, in particular to a slope reinforcing device for a railway roadbed and a construction method.
Background
Old railways are influenced by surrounding environment, various problems begin to appear, such as rail loss, instability of roadbed and the like, and the problems seriously affect the traffic safety and the overall service level of railway traffic lines.
In the application with the patent publication number of CN111962532A, a construction method for reinforcing an existing railway roadbed side slope inclined high-pressure jet grouting pile is disclosed, the construction method is to use the existing concrete pile to carry out cast-in-place to reinforce the side slope, the construction process of the construction method is complicated, local materials are not used, and resource waste is caused.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a novel railway roadbed slope reinforcing device and a construction method, and aims to fully and reasonably utilize old steel rails, effectively reinforce a railway roadbed slope and realize reasonable utilization and optimal configuration of resources.
In order to achieve the purpose, the invention adopts the following scheme:
the invention provides a side slope reinforcing device for a railway roadbed, which comprises a reinforced concrete slab, anchor rod piles, tree root piles and a concrete foundation, wherein the reinforced concrete slab is fixedly connected with the anchor rod piles; the anchor rod pile is inserted into the slope surface of the railway roadbed side slope, the reinforced concrete slab is paved on the surface layer of the slope surface, the root pile is inserted into the slope toe and is positioned below the reinforced concrete slab, and a concrete foundation is poured at the slope toe;
the anchor rod pile and the root pile have the same structure and respectively comprise a grout stopping plate, a trapezoidal sleeve and a pile body steel rail; the grout stopping plate is welded at one end of the pile body steel rail, the trapezoid sleeve is sleeved outside the pile body steel rail and fixed together with the pile body steel rail, the grout stopping plate is provided with a grout injecting hole, concrete is poured into the trapezoid sleeve through the grout injecting hole, and the waist plate of the trapezoid sleeve is provided with a plurality of grout outlet holes.
As a further technical scheme, a part of steel bars in the reinforced concrete slab are replaced by reinforced steel rails.
As a further technical scheme, the reinforced steel rail comprises a plurality of steel rails which are sequentially arranged, a plurality of connecting holes are drilled at the rail waist of each steel rail, the threaded steel bars penetrate through the connecting holes to connect the plurality of steel rails into a whole, and the tail ends of the steel bars are bent and then are jointed and welded with the steel rails.
As a further technical scheme, the reinforced steel rails are longitudinally arranged along the slope, have a set distance from the bottom of the reinforced concrete slab and are fixed by using the supporting ribs.
As a further technical scheme, the anchor rod piles are driven into the soil body downwards along the horizontal direction, are positioned in the longitudinal middle of the reinforced concrete slab and at one end far away from the slope toe, and are arranged in two rows, and two anchor rod piles are driven into each row.
As a further technical scheme, one end of the pile body steel rail, which is connected with the grout stopping plate, is provided with a notch.
As a further technical scheme, the cross section of the trapezoid sleeve is isosceles trapezoid, a diameter round hole is drilled in the middle of a waist plate of the sleeve, the trapezoid sleeve and the pile body steel rail are connected through the threaded steel bar, and two ends of the trapezoid sleeve are bent and fixed.
As a further technical scheme, the grout stopping plate is in an isosceles trapezoid shape, the upper part of the grout stopping plate is a columnar grab handle, the middle of the lower part of the grout stopping plate is a square convex opening for being attached to a notch of a steel rail of the pile body and then welded, and grouting holes are formed in the left and right of the convex opening.
As a further technical scheme, the tree root pile is vertically and downwards driven into a soil body, and the upper part of the tree root pile is welded by a steel rail.
As a further technical scheme, the concrete foundation and the reinforced concrete slab are jointly poured for fixedly connecting the reinforced concrete slab and the root pile.
In a second aspect, the invention further provides a construction method of the slope reinforcement device for the railway roadbed, which comprises the following steps:
step A, finishing a slope surface according to a designed gradient, lofting and positioning a reinforced concrete plate to determine an axis, an outline and the gradient, determining positions of an anchor rod pile hole and a tree root pile hole, and excavating a reinforced concrete plate foundation trench and a concrete foundation trench;
step B, drilling holes at the positions of anchor rod piles in a dry drilling mode, wherein the drilled holes are trapezoidal and close to the anchor rod piles, then cleaning the holes, welding the joint of the convex openings of the grout stop plates and the notches of the pile body steel rails, sleeving the trapezoidal sleeve into the pile body steel rails, fixing the trapezoidal sleeve and the pile body steel rails by using reinforcing steel bars, then welding the trapezoidal sleeve and the grout stop plates, placing the prepared anchor rod piles into the drilled holes, and grouting after the positions are fixed;
step C, drilling holes in the positions of the root piles in a dry drilling mode, wherein the drilled holes are trapezoidal close to the root piles, then cleaning the holes, the steps of preparing the root piles are the same as those of anchor rod piles, vertically placing the prepared root piles into the drilled holes, performing grouting treatment, sealing the holes by adopting cement plugs, and welding the upper parts of the root piles into a whole by using steel rails;
and D, installing a template device of the reinforced concrete slab and the concrete foundation in the excavated foundation trench, fixing the position of the reinforced steel rail by using a supporting rib inside the template device, inserting the twisted steel bar into the circular hole of the reinforced steel rail for connection, bending the tail end of the steel bar, then jointing and welding the bent steel bar with the reinforced steel rail, uniformly stirring the concrete, pouring the concrete into the template until the concrete slab and the concrete foundation are formed, performing watering maintenance after pouring is finished, and finally removing the template.
The invention has the following beneficial effects:
(1) the slope reinforcing device of the railway roadbed and the construction method provided by the invention can carry out enough effective constraint on the slope surface after arrangement is finished, prevent and control the slope slippage and can be applied to the roadbed slope reinforcing engineering.
(2) According to the slope reinforcing device of the railway roadbed and the construction method, the waste steel rails are used for replacing the original steel reinforcement cage and steel pipes in the reinforced concrete slab, the anchor rod pile and the root pile, and the structures of the reinforced concrete slab, the anchor rod pile and the root pile are reasonably designed, so that the purposes of reasonably utilizing waste materials, changing waste into valuable and reducing cost are achieved on one hand, and the slope is reinforced on the other hand.
(3) According to the slope reinforcing device for the railway subgrade and the construction method, the trapezoidal sleeve is used, the internal pile body steel rail can be fixed, and meanwhile compared with a conventional circular sleeve, the slope reinforcing device is more material-saving and lower in cost.
(4) The invention provides a side slope reinforcing device of a railway roadbed and a construction method thereof. The reinforced concrete plate can effectively protect the slope surface from erosion and prevent the soil body of the slope surface from peeling off; the anchor rod pile and the tree root pile can be supported at different positions of a potential sliding surface of the side slope.
(5) The invention provides a side slope reinforcing device of a railway roadbed and a construction method.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a side slope and reinforcement layout;
FIG. 2 is a schematic view of a reinforced rail arrangement;
FIG. 3 is a schematic view of an anchor pile and a root pile;
FIG. 4 is a detailed structure diagram of the anchor pile and the root pile;
FIG. 5 is a schematic view of a caul plate;
FIG. 6 is a schematic view of a pile body rail;
the concrete foundation comprises a reinforced concrete slab 1, an anchor rod pile 2, a tree root pile 3, a concrete foundation 4, a reinforced steel rail 5, a threaded steel bar 6, a grout stopping plate 7, a grout stopping plate 8, a trapezoid sleeve 9, a pile body steel rail 10, a grout outlet hole 11, a threaded steel bar 12, a grab handle 13, a grouting hole 14, a convex opening 15, a concave opening 16 and a drilling hole.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, unless the invention expressly state otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
term interpretation section: the reinforced steel rail is connected through the threaded steel bars, so the reinforced steel rail is named as the reinforced steel rail. The "longitudinal direction of the side slope" in the present invention means a direction of a slope line.
The embodiment provides a side slope reinforcing device for a railway roadbed, which mainly comprises a reinforced concrete slab 1, an anchor rod pile 2, a tree root pile 3 and a concrete foundation 4, wherein the reinforced concrete slab 1, the anchor rod pile 2, the tree root pile 3 and the concrete foundation are paved on the slope surface of the roadbed; the anchor pile 2 is inserted into the slope surface of the railway roadbed side slope, the reinforced concrete slab 1 is laid on the surface layer of the slope surface, the root pile 3 is inserted into the slope toe and is positioned below the reinforced concrete slab, and a concrete foundation is poured at the slope toe; the anchor rod pile 2 and the tree root pile 3 have the same structure and respectively comprise a grout stopping plate, a trapezoidal sleeve and a pile body steel rail; the grout stopping plate is welded at one end of the pile body steel rail, the trapezoid sleeve is sleeved outside the pile body steel rail and fixed together with the pile body steel rail, the grout stopping plate is provided with a grout injecting hole, concrete is poured into the trapezoid sleeve through the grout injecting hole, and the waist plate of the trapezoid sleeve is provided with a plurality of grout outlet holes. According to the economic and reliable slope reinforcing device provided by the invention, the waste steel rails are used for replacing the original steel reinforcement cage and steel pipe in the reinforced concrete slab, the anchor rod pile and the root pile, and the structures and structures of the reinforced concrete slab, the anchor rod pile and the root pile are reasonably designed, so that the purposes of reasonably utilizing waste materials, changing waste into valuable and reducing cost are achieved on one hand, and the reinforcement of the edge break is realized on the other hand.
Further, the inside some reinforcing bars of reinforced concrete slab 1 who lays on the slope of road bed in this embodiment are replaced by reinforced rail 5, for prior art rational utilization waste material, changing waste into valuables, reduce cost. And the concrete used for the reinforced concrete slab 1 laid in the embodiment is C25 type common concrete, the thickness is preferably 0.3m, the length is 6m along the longitudinal direction of the slope surface, the horizontal width is 3m, the reinforced concrete slab 1 covers the slope surface along the slope foot, and the buried depth of the concrete slab is preferably 0.2 m. Further, the reinforced steel rail used in this embodiment is formed by connecting discarded 50kg/m standard rails and twisted steel bars, the length of each standard rail after cutting is preferably 6m, holes are drilled at rail waists and then connected with the twisted steel bars 6 to form the reinforced steel rail 5, the standard rails of the reinforced steel rail 5 are longitudinally arranged along a slope, preferably, 10 standard rails are arranged in one reinforced concrete slab 1, the interval between adjacent standard rails is 0.3m, the distance between the standard rails and the bottom of the reinforced concrete slab 1 is 70mm, and the reinforced steel rail is fixed by using a brace bar with the model diameter of phi 12HRB 400.
Further, the round hole is bored in the middle of the web of rail of standard rail, preferred diameter is 20mm, the round hole that is located both ends is apart from steel rail end 0.2m, inside round hole distance is 0.4m, and 15 round holes in total, then adopt 15 models to be the 6 round holes that alternate 10 reinforced steel rails of phi 18HRB400 to be connected fixedly, 6 terminal backs of twisted steel are buckled with the rail laminating welding for connect into a whole between many standard rails, certain intensity has.
Further, the anchor rod pile 2 is composed of a grout stop plate 7, a trapezoid sleeve 8 and a pile body steel rail 9 and used for fixing a slope soil body and the reinforced concrete slab 1. The anchor rod piles 2 are driven downwards into the soil body along the horizontal direction, the preferred angle is 15 degrees, the anchor rod piles 2 are located in the longitudinal middle of the reinforced concrete slab 1 and one end far away from a slope toe, the two rows are as shown in figure 1, the preferred two anchor rod piles 2 are driven into each row, the pile distance is 1.5m, the distance between each anchor rod pile 2 and the side face of the reinforced concrete slab 1 is 0.75m, and the distance between the uppermost anchor rod pile 2 and the top face of the reinforced concrete slab 1 is 0.3 m.
Furthermore, the pile body steel rail 9 also adopts a discarded standard rail with the length of 50kg/m, the preferable length is 6m, a hole 16 is drilled in the middle of the rail web, and the hole is mainly arranged so that slurry can flow in the pile body steel rail 9; preferably, the bore 16 has a diameter of 20mm, the holes in both sections are preferably 0.2m from the rail end, and the inner holes are 0.4m apart, thus totaling 15.
Further, in the embodiment, a rectangular notch 15 with a width of 50mm and a depth of 50mm is cut at the middle part of the rail web of the pile rail 9 at one end connected with the grout stop plate 7, but it is understood that the notch 15 may have other shapes and other sizes.
Furthermore, the preferred material of the trapezoid sleeve 8 is Q235A carbon structural steel, the length is 6m, the cross section is isosceles trapezoid, the upper bottom width of the inner cross section is 74mm, the lower bottom width is 160mm, the height is 155mm, the sleeve thickness is 10mm, round holes with the diameter of 25mm are drilled in the middle of the sleeve waist plate at a position 0.2m and 3m away from one end of the grout stopping plate 8, the trapezoid sleeve 8 and the pile body steel rail 9 are connected by using a deformed steel bar 11 with the model of phi 18HRB400, the two sections are bent and fixed, the round grout outlet 10 is uniformly drilled below 1.5m of the sleeve waist plate, and the diameter of the grout outlet 10 is preferably 10 mm. The invention uses the trapezoid sleeve, not only can fix the internal pile body steel rail, but also saves more materials and has lower cost compared with the conventional circular sleeve.
Furthermore, the grout stopping plate 7 is preferably made of Q235A carbon steel, the section of the grout stopping plate 7 is isosceles trapezoid, the size of the grout stopping plate is preferably, the width of the upper bottom is 150mm, the width of the lower bottom is 215mm, the height of the grout stopping plate is 235mm, the thickness of the grout stopping plate is 10mm, the upper portion of the grout stopping plate 7 is a cylindrical handle 12, the middle of the lower portion of the grout stopping plate is a square flange 14, the length of the grout stopping plate is 30mm, the grout stopping plate is attached to and welded with a notch 15 of a pile steel rail 9 and is welded with the notch 14, two grout injecting holes 13 with the diameter of 32mm are formed in the left and the right of the flange 14, the grout injecting holes 7 are attached to and welded with a trapezoidal sleeve 8, and the grout injecting holes 13 are mainly used for injecting grout into the pile body at the later stage
Further, root pile 3, by through ending thick liquid board 7, trapezoidal sleeve 8 and pile body rail 9 triplex, the structure is the same with stock pile 2, does not have to be repeated here, root pile 3's length in this embodiment is 6m, is located the toe, and the reinforced concrete slab 1 below is hit into the soil body perpendicularly downwards, totally 3, and the pile pitch is 1.2m, in 3 root pile upper portions, welds with the rail that length is 2.5 m.
Further, the concrete foundation 4 and the reinforced concrete slab 1 are poured together to fixedly connect the reinforced concrete slab 1 and the root pile 3, in this embodiment, the concrete foundation 4 is preferably C25 type common concrete, and has a length of 3m, a width of 0.5m, a height of 0.7m, and an embedded depth of 0.2 m.
Further, the embodiment further provides a method for reinforcing a side slope by using the side slope reinforcing device for a railway roadbed, which includes the following steps:
step A, finishing a slope surface according to a designed gradient, lofting and positioning a reinforced concrete plate 1 to determine an axis, an outline and a gradient, determining positions of an anchor rod pile hole and a tree root pile hole, and excavating a foundation trench of the reinforced concrete plate 1 and a foundation trench of a concrete foundation 4 to a depth of 0.2 m;
step B, drilling holes in the positions of anchor rod piles 2 in a dry drilling mode, wherein the drilled holes are trapezoidal close to the anchor rod piles, then cleaning the holes, welding the joint parts of the convex openings 14 of the grout stop plates 7 and the concave openings 15 of the pile body steel rails 9, sleeving the trapezoidal sleeve sleeves 8 into the pile body steel rails 9, inserting the reinforcing steel bars 11 into the trapezoidal sleeve sleeves 8 and the pile body steel rails 9, fixing the trapezoidal sleeve sleeves 8 and the pile body steel rails 9 by the reinforcing steel bars 11, then welding the trapezoidal sleeve sleeves 8 and the grout stop plates 7, placing the prepared anchor rod piles 2 into the drilled holes, performing grouting treatment after the positions are fixed, wherein the grouting pressure is 0.3-0.5 MPa, the holding time is 20min, and sealing holes by cement plugs, and the sealing depth is 1.5 m;
step C, drilling holes in the positions of the root piles 3 in a dry drilling mode, wherein the drilled holes are trapezoidal and close to the root piles, then cleaning the holes, the step of preparing the root piles 3 is the same as the step of preparing the anchor rod piles 2 in the step 2, vertically placing the prepared root piles 3 into the drilled holes, performing grouting treatment, wherein the grouting pressure is 0.3-0.5 Mpa, the holding time is 20min, sealing the holes by using cement plugs, the hole sealing depth is 1.5m, and welding steel rails with the length of 2.5m at the upper parts of the 3 root piles into a whole;
and D, installing a template device of the reinforced concrete slab 1 and the concrete foundation 4 in the excavated foundation trench, fixing the positions of 10 reinforced steel rails 5 by using supporting ribs inside, inserting the twisted steel bars 6 through the reinforced steel rails 5 for connection, bending the tail ends of the twisted steel bars 6, then welding the bent ends of the twisted steel bars with the reinforced steel rails 5 in a laminating manner, uniformly stirring the concrete, pouring the concrete into the template until the concrete slab 1 and the concrete foundation 4 are poured and formed, performing sprinkling maintenance after pouring is finished, wherein the maintenance time is not less than 7 days, and finally performing form removal.
The economic and reliable slope reinforcing device provided by the invention can carry out sufficient and effective restraint on the slope surface after the arrangement is finished, prevent and control the slope slippage, and can be applied to the reinforcement engineering of the roadbed slope.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A side slope reinforcing device of a railway roadbed is characterized by comprising a reinforced concrete slab, anchor rod piles, tree root piles and a concrete foundation; the anchor rod pile is inserted into the slope surface of the railway roadbed side slope, the reinforced concrete slab is paved on the surface layer of the slope surface, the root pile is inserted into the slope toe and is positioned below the reinforced concrete slab, and a concrete foundation is poured at the slope toe;
the anchor rod pile and the root pile have the same structure and respectively comprise a grout stopping plate, a trapezoidal sleeve and a pile body steel rail; the grout stopping plate is welded at one end of the pile body steel rail, the trapezoid sleeve is sleeved outside the pile body steel rail and fixed together with the pile body steel rail, the grout stopping plate is provided with a grout injecting hole, concrete is poured into the trapezoid sleeve through the grout injecting hole, and the waist plate of the trapezoid sleeve is provided with a plurality of grout outlet holes.
2. The slope reinforcement of a railroad bed according to claim 1, wherein a portion of the reinforcing bars in the reinforced concrete slab are replaced with reinforced steel rails.
3. The slope reinforcing apparatus for a railroad bed of claim 2, wherein the reinforced steel rails comprise a plurality of steel rails and reinforcing bars arranged in sequence, a plurality of connecting holes are drilled at the web of each steel rail, the reinforcing bars pass through the connecting holes to connect the plurality of steel rails into a whole, and the ends of the reinforcing bars are bent and then welded to the steel rails.
4. The slope reinforcement of a railroad bed according to claim 1, wherein the reinforced rails are arranged in a longitudinal direction along the slope, have a set distance from the bottom of the reinforced concrete slab, and are fixed using the braces.
5. The slope reinforcement for a railroad bed according to claim 1, wherein said anchor piles are driven horizontally downward into the soil mass in two rows in the middle of the longitudinal direction of the reinforced concrete slab and at the end remote from the toe, and two anchor piles are driven in each row.
6. The slope-reinforcing apparatus for railroad bed according to claim 1, wherein the pile rail is provided with a notch at an end thereof to which the grout-stop plate is connected.
7. The slope reinforcing apparatus for railroad bed of claim 6, wherein the grout stop plate is an isosceles trapezoid, the upper portion of the grout stop plate is a columnar grip, the middle portion of the lower portion of the grout stop plate is a flange for welding after being attached to the notch of the steel rail of the pile body, and grouting holes are formed on the left and right of the flange.
8. The slope reinforcing apparatus for railroad bed of claim 7, wherein the cross section of the trapezoid sleeve is isosceles trapezoid, a diameter circular hole is drilled in the middle of the sleeve waist plate, and the screw steel bar is connected with the trapezoid sleeve and the pile body steel rail, and both ends are bent and fixed.
9. The slope reinforcing apparatus for railroad bed according to claim 1, wherein the root piles are driven vertically downward into the soil body, and the upper portions of the root piles are welded by rails.
10. A method of constructing a slope reinforcement for a railroad bed according to any one of claims 1 to 9, comprising the steps of:
step A, finishing a slope surface according to a designed gradient, lofting and positioning a reinforced concrete plate to determine an axis, an outline and the gradient, determining positions of an anchor rod pile hole and a tree root pile hole, and excavating a reinforced concrete plate foundation trench and a concrete foundation trench;
b, drilling the anchor rod pile position, wherein the drilled hole is a trapezoid close to the anchor rod pile, then cleaning the hole, welding a convex opening of a grout stop plate after being attached to a notch of a pile body steel rail, sleeving a trapezoid sleeve into the pile body steel rail, fixing the trapezoid sleeve and the pile body steel rail by using a steel bar, then welding the trapezoid sleeve and the grout stop plate, placing the prepared anchor rod pile into the drilled hole, and performing grouting treatment after the position is fixed;
c, drilling a hole at the position of the root pile, wherein the drilled hole is in a trapezoid shape close to the root pile, then cleaning the hole, the root pile preparation step is the same as the anchor rod pile in the step B, the prepared root pile is vertically placed into the drilled hole for grouting treatment, a cement plug is adopted for hole sealing, and the upper part of the root pile is welded into a whole by a steel rail;
and D, installing a template device of the reinforced concrete slab and the concrete foundation in the excavated foundation trench, fixing the position of the reinforced steel rail by using a supporting rib inside the template device, inserting a twisted steel bar into a circular hole of the reinforced steel rail for connection, bending the tail end of the steel bar, then jointing and welding the bent steel bar and the reinforced steel rail, stirring the concrete, pouring the concrete into the template until the concrete slab and the concrete foundation are formed, maintaining after pouring is finished, and finally removing the template.
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| CN202111544964.9A CN114197496B (en) | 2021-12-16 | 2021-12-16 | Side slope reinforcing device of railway roadbed and construction method |
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| CN202111544964.9A CN114197496B (en) | 2021-12-16 | 2021-12-16 | Side slope reinforcing device of railway roadbed and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115370187A (en) * | 2022-09-14 | 2022-11-22 | 中铁十局集团有限公司 | Method for reinforcing railway contact net stand column in soft soil layer |
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| CN101831976A (en) * | 2009-12-24 | 2010-09-15 | 湖南大学 | Prefabricated steel rib bottom plate-concrete overlapped hollow floor system |
| JP2012145006A (en) * | 2011-01-11 | 2012-08-02 | Sasakura Engineering Co Ltd | Thermo compressor and seawater desalination system provided with the same |
| CN208136918U (en) * | 2018-03-02 | 2018-11-23 | 大连理工大学 | A kind of tubular type Soil-Nailing Wall Structure |
| CN109235465A (en) * | 2018-09-20 | 2019-01-18 | 中铁二院工程集团有限责任公司 | Squeeze into the superpower concrete tubular pile breast wall type packaged combination anti-slide pile structure of prestressing force |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115370187A (en) * | 2022-09-14 | 2022-11-22 | 中铁十局集团有限公司 | Method for reinforcing railway contact net stand column in soft soil layer |
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