Prefabricated lining block for slope protection and slope protection structure

Abstract

The utility model relates to the technical field of side slope protection engineering, aims to solve the problems of how to improve the mechanical structure stability of a prefabricated lining block and how to improve the adaptability of the prefabricated lining block to a curved side slope, and provides a prefabricated lining block for side slope protection and a side slope protection structure. The prefabricated lining block for slope protection comprises an internal steel reinforcement framework and an external concrete frame. The steel bar framework comprises inner triangular steel bars and outer triangular steel bars which are fixedly connected. The concrete frame wraps the inner triangular steel bars and the outer triangular steel bars, and the middle of the concrete frame is hollowed to form a through hole. According to the prefabricated lining block for slope protection, the stability of the structure is improved through the inner triangular steel bars and the outer triangular steel bars which are fixedly connected with each other, and permutation and combination of the triangular prefabricated lining blocks are more suitable for surface fluctuation of a curved surface slope. The triangular basic structures of the prefabricated lining blocks can improve the mechanical structure stability of the prefabricated lining blocks, and the combination of the triangular basic structures can improve the adaptability of the prefabricated lining blocks to a curved surface slope.

Description

Technical Field

[0001] This application relates to the field of slope protection engineering technology, and more specifically, to precast lining blocks and slope protection structures for slope protection. Background Technology

[0002] In engineering construction, common slope protection measures generally include formwork and cast-in-place concrete or shotcrete with steel mesh. The formation of the slope support and protection system depends on the slow formation of concrete strength, and the curing time is generally no less than 5 to 7 days. Another common form of slope protection is square or herringbone precast frame lining blocks. These precast lining blocks can quickly form a slope protection system.

[0003] In existing technologies, the mechanical structure of square or herringbone precast frame lining blocks is not stable enough. These blocks are prone to breakage during transportation or construction. Furthermore, while square or herringbone geometry is suitable for flat, regular slopes, it is difficult to adapt to irregular, curved slopes. Solving these technical problems is a matter that those skilled in the art need to consider. Utility Model Content

[0004] This application provides precast lining blocks and slope protection structures for slope protection, in order to solve the problems of how to improve the mechanical structural stability of precast lining blocks and improve the adaptability of precast lining blocks to curved slopes.

[0005] An embodiment of this application provides a precast lining block for slope protection, comprising an internal steel reinforcement skeleton and an external concrete frame. The steel reinforcement skeleton includes inner triangular steel bars and outer triangular steel bars, the outer triangular steel bars being disposed circumferentially on the inner triangular steel bars, and the inner triangular steel bars being fixedly connected to the outer triangular steel bars. The concrete frame encloses the inner and outer triangular steel bars, and the center of the concrete frame is hollowed out to form a through hole.

[0006] Compared to existing technologies, the precast lining blocks for slope protection provided in this embodiment enhance the strength and stability of the structure through the interconnected inner and outer triangular reinforcing bars, thereby reducing the risk of breakage during transportation or construction. The hollow concrete frame with through-holes facilitates the accommodation of convex surfaces on curved slopes, allowing the triangular lining blocks to fit more closely to the surface. Furthermore, the arrangement of multiple precast lining blocks for slope protection is more suitable for the undulating surfaces of curved slopes. The triangular basic structure of the precast lining blocks for slope protection improves their mechanical structural stability, and the combination of multiple precast lining blocks enhances their adaptability to curved slopes.

[0007] In one possible implementation, the inner triangular reinforcing bar includes an integrally connected first connecting end, an inner reinforcing bar body, and a second connecting end. The inner reinforcing bar body is triangular in shape, with the first connecting end at one end and the second connecting end at the other end, and the first and second connecting ends correspond to and are connected. The outer triangular reinforcing bar includes an integrally connected third connecting end, an outer reinforcing bar body, and a fourth connecting end. The outer reinforcing bar body is triangular in shape, with the third connecting end at one end and the fourth connecting end at the other end, and the third and fourth connecting ends correspond to and are connected.

[0008] In one possible implementation, the precast lining block for slope protection further includes connecting bars, the connecting bars being triangular in shape, each including a pointed corner and a base, the base being positioned opposite the pointed corner, the pointed corner being connected to the corner end of the inner triangular reinforcing bar, and the base being connected to the corner end of the outer triangular reinforcing bar.

[0009] In one possible implementation, the concrete frame has a chamfer near the first connecting bar, the second connecting bar, and the third connecting bar.

[0010] In one possible implementation, the inner triangular reinforcing bars and the outer triangular reinforcing bars are made of HRB400 to HRB600 steel bars, and the strength range of the concrete frame is between C30 and C60.

[0011] An embodiment of this application also provides a slope protection structure, comprising: an edge beam and precast lining blocks for slope protection, wherein the precast lining blocks for slope protection are laid on the slope, a plurality of the precast lining blocks for slope protection are stacked sequentially on the edge beam, and mortar is poured between the plurality of precast lining blocks for slope protection; and soil nailing rods are provided at the pointed ends of the precast lining blocks for slope protection, one end of the soil nailing rod being connected to the precast lining block for slope protection by cast-in-place anchoring, and the other end being inserted into the slope to fix the precast lining blocks for slope protection to the slope.

[0012] In one possible implementation, the slope protection structure further includes a concrete anchor end disposed on the surface of the precast lining block for slope protection, to fix the soil nail tie rod and the precast lining block for slope protection.

[0013] In one possible implementation, the slope protection structure further includes vegetation bags disposed in the hollow through-holes of the prefabricated lining block used for slope protection. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of a precast lining block for slope protection according to an embodiment of this application;

[0016] Figure 2 This is a partial structural schematic diagram of a slope protection structure according to another embodiment of this application;

[0017] Figure 3 for Figure 2 A schematic diagram of the slope protection structure from another perspective;

[0018] Figure 4 for Figure 2 A schematic diagram of the concrete sealing anchor end of the slope protection structure.

[0019] Explanation of key component symbols:

[0020] 1. Precast lining blocks for slope protection; 11. Reinforcing steel frame; 111. Inner triangular steel bar; 112. First connecting end; 113. Inner reinforcement body; 114. Second connecting end; 115. Outer triangular steel bar; 1151. Third connecting end; 1152. First connecting bar; 1153. Sharp corner; 1154. Bottom edge; 1155. Outer reinforcement body; 1156. Second connecting bar; 1157. Fourth connecting end; 1158. Third connecting bar; 116. Chamfer; 117. Through hole; 118. Concrete frame; 2. Slope protection structure; 21. Edge beam; 22. Soil nail tie rod; 23. Support frame; 24. Concrete sealing anchor end; 25. Cement grout. Detailed Implementation

[0021] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0022] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0023] Example

[0024] Please see Figures 1 to 4As shown, this embodiment provides a precast lining block 1 for slope protection, including an internal steel reinforcement skeleton 11 and a concrete frame 118 enclosing the steel reinforcement skeleton 11. The steel reinforcement skeleton 11 includes inner triangular steel bars 111 and outer triangular steel bars 115, with the outer triangular steel bars 115 arranged circumferentially around the inner triangular steel bars 111, and the inner triangular steel bars 111 and outer triangular steel bars 115 fixedly connected. The concrete frame 118 encloses the inner triangular steel bars 111 and outer triangular steel bars 115, and the middle of the concrete frame 118 is hollowed out to form a through hole 117.

[0025] The precast lining block 1 for slope protection provided in this embodiment enhances the strength and stability of the lining block structure through the interconnected inner triangular steel bars 111 and outer triangular steel bars 115, thereby reducing the breakage of the precast frame lining block during transportation or construction. The hollow concrete frame 118 has through holes 117, which facilitates the accommodation of the convex surface of the curved slope, making the triangular lining block fit the surface of the curved slope more closely. In addition, the arrangement and combination of multiple precast lining blocks for slope protection is more suitable for the undulation of the curved slope surface. The basic triangular structure of the precast lining block for slope protection can improve the mechanical structural stability of the precast lining block, and the combination of multiple precast lining blocks for slope protection can improve the adaptability of the precast lining block to curved slopes.

[0026] In this embodiment, the reinforcing steel frame 11 is bound together with inner triangular reinforcing bars 111 and outer triangular reinforcing bars 115. The bound reinforcing steel frame 11 is positioned and placed, and cement concrete is mixed in the factory for on-site pouring and curing to form precast lining blocks. The precast lining blocks develop strength quickly, and the triangular concrete frame 118 is highly adaptable to slopes. This solves the problem of slow strength development in cast-in-place concrete projects, as well as the problem of insufficient adaptability of square or herringbone precast lining blocks, and also reduces losses during transportation or construction.

[0027] In one possible implementation, the inner triangular reinforcing bar 111 includes an integrally connected first connecting end 112, an inner reinforcing bar body 113, and a second connecting end 114. The inner reinforcing bar body 113 is triangular in shape, with the first connecting end 112 at one end and the second connecting end 114 at the other end. The first connecting end 112 and the second connecting end 114 correspond to and are connected. The outer triangular reinforcing bar 115 includes an integrally connected third connecting end 1151, an outer reinforcing bar body 1155, and a fourth connecting end 1157. The outer reinforcing bar body 1155 is triangular in shape, with the third connecting end 1151 at one end and the fourth connecting end 1157 at the other end. The third connecting end 1151 and the fourth connecting end 1157 correspond to and are connected.

[0028] In this embodiment, the inner triangular reinforcing bar 111 is formed by bending a single reinforcing bar, with the first connecting end 112 and the second connecting end 114 connected end-to-end. The excess portions of the first connecting end 112 and the second connecting end 114 are used for binding. Similarly, the outer triangular reinforcing bar 115 is formed by bending a single reinforcing bar, with the third connecting end 1151 and the fourth connecting end 1157 connected end-to-end. The excess portions of the third connecting end 1151 and the fourth connecting end 1157 are used for binding. The inner triangular reinforcing bar 111 and the outer triangular reinforcing bar 115 are made of HRB400 to HRB600 steel bars, and the strength range of the concrete frame 118 is between C30 and C60. The steel bars used for the inner triangular reinforcing bar 111 and the outer triangular reinforcing bar 115 vary in grade from HRB400 to HRB600 depending on the slope protection requirements.

[0029] In one possible implementation, the precast lining block 1 for slope protection also includes connecting bars. The connecting bars are triangular in shape and include a pointed corner 1153 and a bottom edge 1154. The bottom edge 1154 is arranged opposite to the pointed corner 1153. The pointed corner 1153 is connected to the corner end of the inner triangular steel bar 111, and the bottom edge 1154 is connected to the corner end of the outer triangular steel bar 115.

[0030] In this embodiment, there are three connecting bars, namely the first connecting bar 1152, the second connecting bar 1156 and the third connecting bar 1158. The first connecting bar 1152, the second connecting bar 1156 and the third connecting bar 1158 are connected to the corner ends of the inner triangular steel bar 111 and the corner ends of the outer triangular steel bar 115 in sequence, which helps to further improve the strength and stability of the steel bar skeleton 11.

[0031] In one possible implementation, the concrete frame 118 has a chamfer 116 at the position near the first connecting bar 1152, the second connecting bar 1156 and the third connecting bar 1158.

[0032] In this embodiment, the outer contour extension line and inner contour of the prefabricated lining block 1 used for slope protection are both equilateral triangles with an inner included angle of 60 degrees, and the three corners of the outer contour have equilateral chamfers 116.

[0033] An embodiment of this application also provides a slope protection structure 2, including an edge beam 21 and precast lining blocks 1 for slope protection. The precast lining blocks 1 for slope protection are laid on the slope. Multiple precast lining blocks 1 for slope protection are stacked sequentially on the edge beam 21. Mortar is poured between the multiple precast lining blocks 1 for slope protection for grouting. Soil nailing rods 22 are provided at the pointed ends of the precast lining blocks 1 for slope protection. One end of the soil nailing rod 22 is connected to the precast lining block 1 for slope protection by cast-in-place sealing and anchoring, and the other end is inserted into the slope to fix the precast lining blocks 1 for slope protection to the slope.

[0034] In this embodiment, the precast lining blocks 1 for slope protection are installed using mechanical hoisting combined with manual fine-tuning to ensure that multiple precast lining blocks 1 are tightly arranged and installed on the existing slope. Cement mortar is used to grout the joints between the precast lining blocks 1. After the precast lining blocks 1 are tightly installed, the slope surface is finished by a cast-in-place reinforced concrete beam, and the concrete strength should not be lower than the strength of the precast lining blocks.

[0035] The soil nailing tie rod 22 is made of prestressed threaded steel bars of appropriate type according to the slope protection requirements, and the length varies from 5 to 20m according to calculations. A support frame 23 is provided in the center of the soil nailing tie rod 22. The support frame 23 is made of threaded steel bars and welded to the soil nailing tie rod 22. Two to three support frames are welded at equal intervals along the diameter of the soil nailing tie rod 22, and they are arranged at equal intervals of 1.5 to 2.0m / unit along the length of the soil nailing tie rod 22.

[0036] In one possible implementation, the slope protection structure 2 further includes a concrete anchor end 24, which is disposed on the surface of the precast lining block 1 for slope protection, to fix the soil nail tie rod 22 and the precast lining block 1 for slope protection.

[0037] In this embodiment, the outer chamfer 116 of the precast lining block 1 used for slope protection consists of soil nails extending into the slope and exposed cast-in-place concrete anchoring ends 24. The exposed portion of the soil nail tie rod 22 needs to be bent at 90 degrees and anchored by cast-in-place concrete. The upper part of the cast-in-place anchoring end is hemispherical with a diameter of 200mm, and the lower part is a hexagonal prism. The side length of the hexagonal main body is the same as the side length of the chamfer 116 of the equilateral triangular precast lining block.

[0038] For the precast lining block 1 used for slope protection, the hexagonal gaps or partial hexagonal gaps formed at the outer edge chamfer 116 need to be mechanically drilled. The hole diameter is φ100mm, and the hole depth ranges from 5m to 20m. The drilling angle is perpendicular to the slope surface. Soil nail tie rods 22 and soil nail centering support frames 23 are installed in the φ100 holes. Then, cement grout 25 is injected into the holes. The injected cement grout 25 uses ordinary Portland cement with a water-cement ratio of 0.4~0.5 and a compressive strength of not less than 20MPa.

[0039] In one possible implementation, the slope protection structure 2 also includes a vegetation bag disposed in the hollow through-hole 117 of the prefabricated lining block 1 for slope protection.

[0040] In this embodiment, the hollow portion of the prefabricated lining block 1 for slope protection located in the through hole 117 is filled with finished planting bags, thereby enhancing the stability and ecological aesthetics of the slope.

[0041] The construction sequence of slope protection structure 2 is as follows: transport the precast lining blocks 1 for slope protection to the construction site, repair the slope and cast the bottom edge beam 21 in place, tightly mason the precast lining blocks 1 for slope protection from bottom to top, drill holes at the chamfer 116 position of the precast lining blocks 1 for slope protection, clean the holes, insert soil nail tie rods 22 into the holes, inject cement grout 25 into the holes, and seal the hole openings; erect formwork and cast the side and bottom edge beams 21 in place, pour cement mortar between the precast lining blocks 1 for slope protection for grouting, install vegetation bags at the through holes 117 position of the precast lining blocks 1 for slope protection, and remove the formwork after the slope protection structure 2 has been cured.

[0042] In summary, the precast lining block 1 for slope protection provided in this embodiment enhances the strength and stability of the lining block structure through the mutually fixed connection of inner triangular steel bars 111 and outer triangular steel bars 115, thereby reducing the breakage of the precast frame lining block during transportation or construction. The hollow concrete frame 118 has through holes 117, which facilitates the accommodation of the convex surface of the curved slope, making the triangular lining blocks fit the surface of the curved slope more closely. In addition, the arrangement and combination of triangular precast lining blocks are more suitable for the undulations of the curved slope surface. The basic triangular structure of the precast lining block can improve the mechanical structural stability of the precast lining block, and its combination can improve the adaptability of the precast lining block to curved slopes.

[0043] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A precast lining block for use in the protection of slopes, characterised in that, include: A reinforcing steel cage includes inner triangular steel bars and outer triangular steel bars, wherein the outer triangular steel bars are arranged around the inner triangular steel bars, and the inner triangular steel bars are fixedly connected to the outer triangular steel bars; A concrete frame encloses the inner triangular steel bars and the outer triangular steel bars, with a hollowed-out center to form a through hole.

2. The precast lining block for slope protection according to claim 1, characterized in that: The inner triangular steel bar includes an integrally connected first connecting end, an inner steel bar body, and a second connecting end. The inner steel bar body is triangular in shape. One end of the inner steel bar body is provided with the first connecting end, and the other end is provided with the second connecting end. The first connecting end and the second connecting end correspond to and are connected. The outer triangular steel bar includes an integrally connected third connecting end, an outer steel bar body, and a fourth connecting end. The outer steel bar body is triangular in shape. One end of the outer steel bar body is provided with the third connecting end, and the other end is provided with the fourth connecting end. The third connecting end and the fourth connecting end correspond to each other and are connected.

3. The precast lining block for slope protection according to claim 2, characterized in that: It also includes connecting bars, which are triangular in shape and include a pointed corner and a base. The base is positioned opposite to the pointed corner, the pointed corner is connected to the corner end of the inner triangular steel bar, and the base is connected to the corner end of the outer triangular steel bar.

4. The precast lining block for slope protection according to claim 3, characterized in that: The concrete frame has a chamfer near the connecting reinforcement.

5. The precast lining block for slope protection according to claim 2, characterized in that: The inner and outer triangular reinforcing bars are made of HRB400 to HRB600 steel bars, and the strength range of the concrete frame is between C30 and C60.

6. A slope protection structure characterized by, include: Edge beam; The precast lining blocks for slope protection according to any one of claims 1 to 5, wherein the precast lining blocks for slope protection are laid on the slope, and a plurality of the precast lining blocks for slope protection are stacked sequentially on the edge beam, and mortar is poured and grouting is performed between the plurality of the precast lining blocks for slope protection. Soil nailing rods are installed at the pointed ends of the precast lining blocks used for slope protection. One end of the soil nailing rod is connected to the precast lining block used for slope protection by cast-in-place anchoring, and the other end is inserted into the slope to fix the precast lining block used for slope protection to the slope.

7. The slope protection structure according to claim 6, characterized in that: It also includes a concrete sealing anchor end, which is placed on the surface of the precast lining block for slope protection to fix the soil nail tie rod and the precast lining block for slope protection.

8. The slope protection structure according to claim 6, characterized in that: It also includes vegetation bags, which are placed in the hollow through-holes of the prefabricated lining blocks used for slope protection.

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