Hinged assembly type opposite anchoring frame beam structure for reinforcing and strengthening roadbed and construction method of hinged assembly type opposite anchoring frame beam structure

Abstract

The invention provides a hinged assembly type opposite-anchoring frame beam structure for reinforcing and strengthening a roadbed, which comprises main frames and opposite-anchoring pull rod assemblies, the main frames are arranged on side slopes on two sides of the roadbed, and the main frames on two sides of the side slopes are connected through the opposite-anchoring pull rod assemblies, so that an opposite-anchoring frame roadbed structure is formed. The main frame comprises a cross-shaped assembly subunit, a T-shaped assembly subunit and an L-shaped assembly subunit. The method can be applied to reinforcing existing line roadbeds and can also be suitable for newly-built embankment sections. For the roadbed sections with the defects of slope extrusion, road shoulder cracking and bulging, excessive roadbed settlement and the like of the existing line roadbed, prestress can be applied to the pull rods, and the roadbed and the upper track structure are adjusted to reset. The method is easy and convenient to construct, good in protection effect, low in cost and capable of being used and popularized.

Description

Technical Field

[0001] The invention belongs to the technical field of roadbed protection engineering, and specifically relates to an articulated assembled anchor frame beam structure for reinforcing and strengthening a roadbed and a construction method thereof. Background Art

[0002] With the continuous advancement of urbanization and the development of transportation, frame beam slope protection technology plays an increasingly important role in the construction of infrastructure such as roads, railways, and bridges. In addition, with the improvement of environmental awareness, people's requirements for slope management and protection are getting higher and higher, so the roadbed protection technology needs to continue to improve. The frame beam slope protection technology will continue to improve and perfect, and its application scope and application effect will become better and better, becoming one of the important technologies and means in the field of slope management and protection. Based on this, a frame beam roadbed protection structure with better protection effect and simpler construction is designed. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an articulated assembled anchor frame beam structure for reinforcing the roadbed in view of the above-mentioned deficiencies of the prior art, which has scientific and reasonable design, convenient construction, strong durability, good protection effect, simple maintenance and can be promoted for use.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: an articulated assembled anchor frame lattice beam structure for reinforcing and strengthening roadbed, characterized in that it includes a main frame and an anchor rod assembly, the main frame is arranged on the side slopes on both sides of the roadbed, and the main frames arranged on the side slopes on both sides are connected by multiple rows of anchor rod assemblies, the main frame includes a cross-shaped assembly unit, a T-shaped assembly unit and an L-shaped assembly unit, the main frame is in the shape of a rectangular grid frame as a whole, and adjacent cross-shaped assembly units, T-shaped assembly units and L-shaped assembly units are hinged, and the cross-shaped assembly unit, the T-shaped assembly unit and the L-shaped assembly unit are all provided with rod holes for installing the anchor rod assembly.

[0005] Preferably, the cross-shaped assembly unit, T-shaped assembly unit and L-shaped assembly unit are all composed of cross beams and longitudinal beams vertically connected to each other, and the cross-shaped assembly unit is composed of cross beams and longitudinal beams of equal lengths cross-connected vertically; the cross beam length of the T-shaped assembly unit is twice the length of the longitudinal beam, the longitudinal beam of the T-shaped assembly unit is vertically connected at the midpoint of the cross beam, and the length of the longitudinal beam of the T-shaped assembly unit is equal to the longitudinal beam of the cross-shaped assembly unit; the longitudinal beam and cross beam of the L-shaped assembly unit are equal in length, the longitudinal beam of the L-shaped assembly unit is vertically connected to the ends of the cross beam, and the length of the longitudinal beam of the L-shaped assembly unit is equal to the length of the longitudinal beam of the T-shaped assembly unit.

[0006] Preferably, the anchor tie rod assembly includes a tie rod, a nut and a pressure plate, the two ends of the tie rod respectively pass through the tie rod holes at corresponding positions on the slopes on both sides, pressure plates and nuts are arranged at the two ends of the tie rod in sequence, and the outer side of the tie rod is provided with an outer sleeve for protecting the tie rod, and the tie rod is a prestressed steel bar or an anchor cable.

[0007] Preferably, the tie rod holes on the cross-shaped assembly unit, the T-shaped assembly unit and the L-shaped assembly unit are all opened at the intersection of the cross beam and the longitudinal beam. The cross-section of the tie rod hole is an inverted triangle. A cylindrical through hole for passing the tie rod is opened in the tie rod hole. The pressure plate is close to the cylindrical through hole. The nut is close to the pressure plate after being tightened on the tie rod.

[0008] Preferably, hinged joints are provided at the ends of the cross beams and longitudinal beams on the cross-shaped assembly unit, the T-shaped assembly unit and the L-shaped assembly unit, and the hinged joints that are adapted to be connected to each other are connected by pins.

[0009] Preferably, the main frame is a prefabricated concrete component, and the hinged joint is a prefabricated metal component.

[0010] A construction method for an articulated assembled anchor lattice beam structure for reinforcing a roadbed comprises the following steps:

[0011] S1. Prefabricate the main frame, make hinged joints, measure and lay out the positions of the tie rod holes and the main frame according to the construction drawings and mark them on the slope;

[0012] S2. According to the layout position of the tie rod hole, a hole is drilled on one side of the roadbed at a horizontal or designed inclination angle perpendicular to the roadbed line direction by a drilling rig to penetrate the roadbed;

[0013] S3, connecting one end of the pull rod and the outer casing to the end of the drill pipe on the drilling rig through a connector, passing the pull rod and the outer casing through the borehole together by controlling the drill pipe, and fixing them by pouring grouting material in the gap between the inside of the borehole and the outside of the outer casing;

[0014] S4. Dig a shallow groove for installing the main frame according to the layout position of the main frame, use mortar to level the shallow groove, install the main frame in the leveled shallow groove, pass the tie rod through the corresponding tie rod hole, and install the pin in the corresponding hinge joint;

[0015] S5. Tension the tie rod and the compensating tie rod to the designed stress value, install the pressure pad and nut in sequence, and complete the tensioning and tightening of the tie rod.

[0016] Preferably, the diameter of the connector in S3 is not larger than the diameter of the drill rod, so as to ensure that the drill rod and the pull rod are centrally connected and that the drill rod guides the control pull rod and does not fall off when passing through the roadbed.

[0017] Preferably, when the tension rod is tensioned in S5, the first tensioning force is 5% to 10% greater than the design value, to ensure that the tensioning force of the tension rod after the compensatory tensioning is not less than the design value.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. The present invention has a simple and reasonable structure, convenient construction and strong durability.

[0020] 2. The present invention uses tension rods to anchor the frame beams at the slopes on both sides of the roadbed, and can provide stable and sufficient pre-tension force, thereby generating lateral pre-pressure on the roadbed slope and providing sufficient reinforcement for the roadbed.

[0021] 3. The present invention forms a main frame by hingedly connecting three different forms of assembly units, and divides the entire main frame into multiple assembly units. The prefabrication and construction are easy, and the hinged connection method can also facilitate the later maintenance and replacement of damaged assembly units. At the same time, the hinged main frame itself has a deformation buffer function, is not easy to be damaged as a whole, and has strong durability. The main frame is made by prefabrication. Compared with the cast-in-place construction method, the construction period is short, the requirements for the flatness of the slope surface are low, and it can also be used for rapid rescue and reinforcement of slope landslides.

[0022] 4. The pull rod of the present invention is inserted into the outer sleeve, and the pull rod is isolated from the soil to avoid mutual friction and contact corrosion, which can effectively increase the service life of the pull rod, is safe and reliable, and is easy to construct.

[0023] The present invention is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the top view of the main frame of the present invention.

[0025] Figure 2 It is a schematic diagram of the axonometric three-dimensional structure of the present invention installed on the roadbed slope.

[0026] Figure 3 It is a three-dimensional structural schematic diagram of the cross-shaped assembly unit in the present invention.

[0027] Figure 4 It is a schematic diagram of assembling the anchor rod assembly of the cross-shaped assembly unit in the present invention.

[0028] Figure 5 It is a structural schematic diagram of the upper tie rod hole of the cross-shaped assembly unit in the present invention.

[0029] Figure 6 It is a schematic diagram of the main cross-sectional structure of the present invention installed on a roadbed slope.

[0030] Description of reference numerals:

[0031] 1—Cross-shaped assembly unit; 2—T-shaped assembly unit; 3—L-shaped assembly unit;

[0032] 4—hinge joint; 4a—pin; 5—tie rod;

[0033] 6—nut; 7—pressure bearing plate; 8a—tie rod hole;

[0034] 8b—cylindrical perforation; 9—slope. DETAILED DESCRIPTION

[0035] Example 1

[0036] like Figures 1 to 6 As shown, the present embodiment provides an articulated assembled anchor lattice beam structure for reinforcing and strengthening a roadbed, comprising a main frame and an anchor rod assembly, wherein the main frame is arranged on the side slopes 9 on both sides of the roadbed, and the main frames arranged on the side slopes 9 on both sides are connected by multiple rows of anchor rod assemblies, and the main frame comprises a cross-shaped assembly unit 1, a T-shaped assembly unit 2 and an L-shaped assembly unit 3, and the main frame is in the shape of a rectangular grid frame as a whole, and adjacent cross-shaped assembly units 1, T-shaped assembly units 2 and L-shaped assembly units 3 are hinged, and the cross-shaped assembly unit 1, T-shaped assembly unit 2 and L-shaped assembly unit 3 are all provided with rod holes 8a for installing the anchor rod assembly.

[0037] In this embodiment, the cross-shaped assembly unit 1, the T-shaped assembly unit 2 and the L-shaped assembly unit 3 are all composed of cross beams and longitudinal beams vertically connected to each other. The cross-shaped assembly unit 1 is composed of cross beams and longitudinal beams of equal lengths cross-connected vertically; the cross beam length of the T-shaped assembly unit 2 is twice the length of the longitudinal beam, the longitudinal beam of the T-shaped assembly unit 2 is vertically connected at the midpoint of the cross beam, and the length of the longitudinal beam of the T-shaped assembly unit 2 is equal to the longitudinal beam of the cross-shaped assembly unit 1; the longitudinal beam and cross beam of the L-shaped assembly unit 3 are equal in length, the longitudinal beam of the L-shaped assembly unit 3 is vertically connected to the ends of the cross beam, and the length of the longitudinal beam of the L-shaped assembly unit 3 is equal to the length of the longitudinal beam of the T-shaped assembly unit 2.

[0038] In this embodiment, the anchor rod assembly includes a rod 5, a nut 6 and a pressure pad 7. The two ends of the rod 5 respectively pass through the rod holes 8a at corresponding positions on the slopes 9 on both sides. The two ends of the rod 5 are successively provided with pressure pads 7 and nuts 6. The outer side of the rod 5 is provided with an outer sleeve for protecting the rod 5. The rod 5 is a prestressed steel bar.

[0039] In this embodiment, the tie rod holes 8a on the cross-shaped assembly unit 1, the T-shaped assembly unit 2 and the L-shaped assembly unit 3 are all opened at the intersection of the cross beam and the longitudinal beam. The cross-section of the tie rod hole 8a is an inverted triangle. A cylindrical through hole 8b for passing the tie rod 5 is opened in the tie rod hole 8a. The pressure plate 7 is close to the cylindrical through hole 8b. The nut 6 is close to the pressure plate 7 after being tightened on the tie rod 5.

[0040] In this embodiment, hinged joints 4 are provided at the ends of the cross beams and longitudinal beams on the cross-shaped assembly unit 1, the T-shaped assembly unit 2 and the L-shaped assembly unit 3, and the hinged joints 4 that are adapted to be connected to each other are connected by pins 4a.

[0041] In this embodiment, the main frame is a prefabricated reinforced concrete component, and the hinged joint 4 is a prefabricated metal component.

[0042] Example 2

[0043] This embodiment provides a construction method of an articulated assembled anchor lattice beam structure for reinforcing a roadbed, comprising the following steps:

[0044] S1, prefabricate the main frame, make the hinged joint 4, measure and lay out the positions of the tie rod holes 8a and the main frame according to the construction drawings and mark them on the slope 9;

[0045] S2, according to the layout position of the tie rod hole 8a, a hole is drilled on one side of the roadbed in a direction perpendicular to the roadbed line at a horizontal or designed inclination angle through a drilling rig to penetrate the roadbed;

[0046] S3, connecting the pull rod 5 and one end of the outer sleeve to the end of the drill pipe on the drilling rig through a connector, passing the pull rod 5 and the outer sleeve through the borehole by controlling the drill pipe, and fixing them by pouring grouting material in the gap between the inside of the borehole and the outside of the outer sleeve;

[0047] S4, excavating a main frame installation shallow groove according to the layout position of the main frame, using mortar to level the installation shallow groove, installing the main frame in the leveled installation shallow groove, passing the tie rod 5 through the corresponding tie rod hole 8a, and installing the pin 4a in the corresponding hinge joint 4;

[0048] S5, tensioning the tie rod 5, tensioning the compensating tie rod 5 to the designed stress value, installing the pressure pad 7 and the nut in sequence, and completing the tensioning and tightening of the tie rod 5.

[0049] In this embodiment, the diameter of the connector in S3 is not larger than the diameter of the drill rod, ensuring that the drill rod and the pull rod are connected in a centering manner and ensuring that the drill rod leads the control pull rod and does not fall off when passing through the roadbed.

[0050] In this embodiment, when the tension rod 5 is tensioned in S5, the first tensioning force is greater than the design value by 5% to 10%, ensuring that the tensioning force of the tension rod 5 after the compensation tensioning is not less than the design value.

[0051] The above is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent change made to the above embodiment according to the technical essence of the invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An articulated assembled anchor lattice beam structure for reinforcing a roadbed, characterized in that: The invention comprises a main frame and an anchor rod assembly, wherein the main frame is arranged on the side slopes (9) on both sides of the roadbed, and the main frames arranged on the side slopes (9) on both sides are connected by multiple rows of anchor rod assemblies, and the main frame comprises a cross-shaped assembly unit (1), a T-shaped assembly unit (2) and an L-shaped assembly unit (3). The main frame is in the shape of a rectangular grid frame as a whole, and adjacent cross-shaped assembly units (1), T-shaped assembly units (2) and L-shaped assembly units (3) are hinged, and the cross-shaped assembly unit (1), the T-shaped assembly unit (2) and the L-shaped assembly unit (3) are all provided with a rod hole (8a) for installing the anchor rod assembly.

2. The hinged assembled anchor lattice beam structure for reinforcing the roadbed according to claim 1, characterized in that: The cross-shaped assembly unit (1), the T-shaped assembly unit (2) and the L-shaped assembly unit (3) are all composed of cross beams and longitudinal beams connected perpendicularly to each other. The cross-shaped assembly unit (1) is composed of cross beams and longitudinal beams of equal length connected perpendicularly to each other. The cross beam of the T-shaped assembly unit (2) is twice as long as the longitudinal beam. The longitudinal beam of the T-shaped assembly unit (2) is vertically connected at the midpoint of the cross beam. The length of the longitudinal beam of the T-shaped assembly unit (2) is equal to the longitudinal beam of the cross-shaped assembly unit (1). The longitudinal beam and cross beam of the L-shaped assembly unit (3) are equal in length. The longitudinal beam and cross beam ends of the L-shaped assembly unit (3) are vertically connected. The length of the longitudinal beam of the L-shaped assembly unit (3) is equal to the length of the longitudinal beam of the T-shaped assembly unit (2).

3. The hinged assembled anchor lattice beam structure for reinforcing the roadbed according to claim 1, characterized in that: The anchor rod assembly comprises a rod (5), a nut (6) and a pressure pad (7); the two ends of the rod (5) respectively pass through rod holes (8a) at corresponding positions on the slopes (9) on both sides; the two ends of the rod (5) are provided with pressure pads (7) and nuts (6) in sequence; the outer side of the rod (5) is provided with an outer sleeve for protecting the rod (5); the rod (5) is a prestressed steel bar or an anchor cable.

4. The articulated assembled anchor lattice beam structure for reinforcing a roadbed according to claim 3, characterized in that: The tie rod holes (8a) on the cross-shaped assembly unit (1), the T-shaped assembly unit (2) and the L-shaped assembly unit (3) are all located at the intersection of the cross beam and the longitudinal beam. The cross section of the tie rod hole (8a) is an inverted triangle. A cylindrical through hole (8b) for passing the tie rod (5) is provided in the tie rod hole (8a). The pressure plate (7) is tightly attached to the cylindrical through hole (8b). The nut (6) is tightly attached to the pressure plate (7) after being tightened on the tie rod (5).

5. The hinged assembled anchor lattice beam structure for reinforcing the roadbed according to claim 1, characterized in that: Hinge joints (4) are arranged at the ends of the cross beams and longitudinal beams on the cross-shaped assembly unit (1), the T-shaped assembly unit (2) and the L-shaped assembly unit (3), and the mutually adaptable hinge joints (4) are connected via pins (4a).

6. The hinged assembled anchor lattice beam structure for reinforcing the roadbed according to claim 5, characterized in that: The main frame is a prefabricated reinforced concrete component, and the hinged joint (4) is a prefabricated metal component.

7. A construction method for an articulated assembled anchor lattice beam structure for reinforcing a roadbed as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: S1, prefabricate the main frame and hinge joint (4) in the factory, measure and lay out the positions of the tie rod holes (8a) and the main frame according to the construction drawings and mark them on the slope (9); S2, according to the layout position of the tie rod hole (8a), drilling a hole through the roadbed horizontally in a direction perpendicular to the roadbed line on one side of the roadbed by a drilling rig; S3, connecting the pull rod (5) and one end of the outer casing to the end of the drill pipe on the drilling rig through a connector, passing the pull rod (5) and the outer casing through the borehole by controlling the drill pipe, and fixing them by pouring grouting material in the gap between the borehole and the outer casing; S4, excavating a main frame installation shallow groove according to the layout position of the main frame, using mortar to level the installation shallow groove, installing the main frame in the leveled installation shallow groove, passing the tie rod (5) through the corresponding tie rod hole (8a), and installing the pin (4a) in the corresponding hinge joint (4); S5, tensioning the tension rod (5), tensioning the compensating tension rod (5) to the designed stress value, installing the pressure pad (7) and the nut in sequence, and completing the tensioning and tightening of the tension rod (5).

8. The construction method of the hinged assembled anchor lattice beam structure for reinforcing the roadbed according to claim 7 is characterized in that: The diameter of the connector in S3 is not larger than the diameter of the drill pipe, ensuring that the drill pipe and the pull rod are connected in a centering manner and that the drill pipe leading the control pull rod and the outer casing do not fall off when passing through the roadbed.

9. The construction method of the hinged assembled anchor lattice beam structure for reinforcing the roadbed according to claim 7 is characterized in that: When the tension rod (5) is tensioned in S5, the first tensioning force is greater than the design value by 5% to 10%, thereby ensuring that the tensioning force of the tension rod (5) after the compensation tensioning is not less than the design value.

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