CN220058018U - A weathered soft rock road cutting slope window-type protective wall protection structure - Google Patents

Abstract

The utility model discloses a weathered soft rock cutting slope window type facing wall protection structure, and relates to the technical field of expressway construction. Comprises a window type facing wall body and a greening window body; the window type facing wall body is an inclined wall body, the back of the wall body is tightly covered on the surface of the side slope, and the bottom of the wall body is buried in the slope toe of the side slope; the window type facing wall body is also internally provided with a plurality of greening window bodies which are distributed vertically and horizontally in the window type facing wall body. The window type facing wall protection structure can effectively cover the surface of a slope body in a large area for a weathered soft rock cutting slope, particularly when the weathered soft rock cutting slope is seriously weathered and rock stratum is broken, so that the slope body is prevented from being washed by rainwater, the reduction of mechanical parameters of the weathered soft rock slope is weakened, and the stability of the weathered soft rock slope is ensured; and the greening window has attractive appearance, is internally ridged for grass planting, is green and environment-friendly and has strong ornamental value.

Description

A weathered soft rock road cutting slope window-type protective wall protection structure

Technical field

The utility model relates to the technical field of highway construction, and specifically relates to a weathered soft rock road cutting slope window-type protective wall protection structure.

Background technique

The protection form of cutting slopes should be based on the engineering and hydrogeological conditions of the specific slope, slope height, local climate and meteorology, construction technology, and combined with slope characteristics such as rock and soil structure, structural surface occurrence, weathering degree, topography The landform and the stability of natural slopes are comprehensively determined. The existing protective structures mainly include anchor rod/anchor cable frame beams, concrete retaining walls, arched frames, three-dimensional mesh spray-seeded grass planting, active mesh, vegetation ecological protection, etc. The construction cost of anchor rod/anchor cable frame beam protection is high and the investment is large; the concrete retaining wall has no green vitality at all, and is generally suitable for soil slopes with thick soil layers that are prone to partial collapse; the arched frame combined with plant protection, protection The strength is limited, and the ability to resist rain erosion is relatively weak; three-dimensional network spray grass planting or direct spray grass planting protection is suitable for low-height sections of general soil or strongly weathered rock slopes, and the general height does not exceed 4m; vegetation ecological protection is generally only applicable On an overall stable rock slope; if the rock mass has good integrity and is hard rock, it can be directly exposed or an active protective net can be hung.

For weathered soft rock cutting slopes, after soft rock excavation, due to the effect of dry-wet cycles, the surface layer of the soft rock cutting slope is easily weathered and broken, causing shallow slope instability; new structures formed after slope instability The section is repeatedly weathered and destabilized by rain erosion and sunlight, and the cycle repeats, causing progressive shallow instability of the slope from the surface to the inside. In order to prevent the soft rock cutting slope from destabilizing and falling off under the dry-wet cycle and weathering caused by water and sunlight, the usually adopted measure is to set up a layer of waterproof protective wall structure on the slope surface, but this protective wall structure The face wall structure completely covers the slope surface, and there is no green vitality on the face protection wall. It does not conform to the green and environmentally friendly construction concept and is not ornamental (for example, the utility model patent with publication number CN211596801U discloses a waterproof face protection Wall structure, the protective wall structure is a single wall without any green vitality. It also does not conform to the green and environmentally friendly construction concept and is not ornamental).

Therefore, it is particularly important to develop a weathered soft rock cutting slope protection structure that can not only ensure the safety and stability of the slope, but also take into account economical conservation and environmental protection.

Utility model content

In view of the above-mentioned shortcomings of the prior art, the main purpose of this utility model is to provide a new type of weathered soft rock road cutting slope window-type protective wall protection structure to solve the above-mentioned problems.

In order to achieve the above purpose, the utility model provides a weathered soft rock road cutting slope window-type protective wall protection structure, including a window-type protective wall and a green window; the window-type protective wall is an inclined wall, and its wall The back is tightly covered on the surface of the slope, and the bottom of the wall is embedded in the foot of the slope; there are also multiple greening windows in the window-type protective wall, and multiple greening windows are in the window-type protective wall. Evenly distributed vertically and horizontally.

Furthermore, the back side of the window-type cladding wall is also provided with a protruding ear wall, which matches the ear wall groove on the side slope surface.

Further, it also includes a water intercepting ditch and a movable platform. The movable platform is located at the top of the window-type cladding wall, and the movable platform and the top of the wall are smoothly connected; the water intercepting ditch is arranged between the movable platform and the side slope. between surfaces.

Further, it also includes a breaking platform and a side ditch. The breaking platform is connected to the wall of the window-type cladding wall and is located at the foot of the slope. There is also a side ditch on the side of the breaking platform away from the slope. .

Furthermore, there are multiple drainage holes in the window-type protective wall. The multiple drainage holes are staggered up and down, and the outlet height of the last drainage hole is higher than the level of the debris table and the side ditch.

Furthermore, expansion joints are provided between adjacent window-type cladding walls.

Further, the green window structure is diamond-shaped, and there are multiple hollow hexagonal blocks inside the green window.

Furthermore, the window-type cladding wall is made of concrete.

The utility model has the following beneficial effects:

The utility model provides a window-type protective wall for weathered soft rock road cutting slopes. For weathered soft rock road cutting slopes, especially when the weathering is severe and the rock layers are broken, the window-type protective wall protection structure can be used to face the slope in a large area. Effectively cover the surface of the body to prevent rainwater from scouring the slope, minimize the reduction of the mechanical parameters of the soft rock, and effectively ensure the stability of the weathered soft rock slope;

The greening window structure of the utility model is diamond-shaped and beautiful in shape, and there are multiple hollow hexagonal blocks inside the greening window for cultivating soil and planting grass, which is green, environmentally friendly and highly ornamental;

The set of ear walls can greatly improve the bite force between the window-type protective wall and the slope body, integrating the two into a whole more effectively;

The weep holes can effectively remove accumulated water behind the wall and reduce the erosion damage of rainwater on weathered soft rock slopes;

The utility model has the advantages of low material price, simple structure and convenient construction.

Description of the drawings

Figure 1 is a schematic cross-sectional view of the utility model's weathered soft rock cutting slope window-type face wall protection structure.

Figure 2 is a schematic cross-sectional view of the window-type protective wall protection structure of the present utility model when the height is 10m.

Figure 3 is a schematic cross-sectional view of the window-type protective wall protection structure of the present utility model when the height is 8m.

Figure 4 is a schematic elevation view of the window-type protective wall protection structure of the present utility model when the height is 10m.

Figure 5 is a schematic elevation view of the window-type protective wall protection structure of the present utility model when the height is 8m.

Figure 6 is a construction flow chart of the utility model's window-type protective wall protection structure for weathered soft rock road cutting slopes.

In the picture: 1-window-type protective wall; 2-cutting ditch; 3-movable platform; 4-top of wall; 5-bottom of wall; 6-wall; 7-back of wall; 8-ear wall; 9-Water hole; 10-C20 stone concrete; 11-Expansion joint; 12-Gravel platform; 13-Gutter; 14-Greening window; 15-Hollow hexagonal block; 16-Planting grass.

Detailed ways

In order to achieve the above purposes and effects, the technical means and structures adopted by the present utility model are described in detail with reference to the accompanying drawings and the characteristics and functions of the preferred embodiments of the present utility model.

Example 1

As shown in Figures 1-6, the utility model provides a window-type protective wall protection structure for weathered soft rock road cutting slopes. The window-type protective wall protection structure is suitable for slopes with a slope ratio of 1:0.75-1:1.5 The weathered soft rock cutting slope, and the general cutting slope height is ≤20m, its structure includes a window-type protective wall 1 and a green window 14; the window-type protective wall 1 is an inclined wall, and its wall The back 7 closely covers the slope surface to prevent rainwater from scouring the slope, effectively ensuring the stability of the weathered soft rock slope; and the bottom 5 of the wall is embedded into the foot of the slope, reinforcing the entire window-type protective wall. The structure improves the stability of the wall; the window-type cladding wall 1 is also provided with a plurality of greening windows 14, and the plurality of greening windows 14 are evenly distributed vertically and horizontally in the window-type cladding wall 1. Distribution, grass planting is carried out in the greening window 14, which not only achieves green environmental protection but also has excellent ornamental value.

Example 2

This embodiment also adds an ear wall structure on the basis of Embodiment 1. The window-type facing wall 1 is also provided with a plurality of protruding ear walls 8 on one side of the wall back 7. The ear walls 8 are connected with the side walls. The ear wall grooves on the slope surface are adapted to each other and closely cover the slope surface together with the wall back 7; the additional ear wall 8 structure can interlock with the ear wall grooves on the slope surface, greatly improving the window style The bite force between the protective wall and the weathered soft rock road pad slope more effectively combines the two into a whole, and the ear wall 8 structure also increases the gap between the window-type protective wall and the slope surface. The contact area makes the two more closely integrated.

Example 3

On the basis of Embodiment 1, this embodiment also adds a water intercepting ditch and a movable platform. The movable platform 3 is located at the top 4 of the window-type cladding wall 1, and the movable platform 3 is connected to the The tops 4 of the walls are connected smoothly to facilitate construction and greening work; the water intercepting ditch 2 is set between the movable platform 3 and the slope surface, with a bottom width of 30cm and a top height of 30cm. Cut off the water flow above the top 4 of the wall to prevent the water flow from flowing to the window-type cladding wall 1.

Example 4

In this embodiment, on the basis of Embodiment 1, a chipping platform and a side ditch are added. The chipping table 12 is connected to the wall surface 6 of the window-type cladding wall 1 and is located at the foot of the slope. , which increases the buffering distance when debris falls, and can prevent debris from falling into the side ditch or the middle road; the side ditch 13 is also provided on the side of the drop table 12 away from the slope, and the side ditch 13 is also provided on the side of the drop platform 12. The ditch 13 is also connected to both sides of the road, which can quickly collect the accumulated water on the road and the slope water on the window-type protective wall 1, and introduce it into the drainage channel for release.

Example 5

This embodiment is further provided with drainage holes on the basis of Embodiment 4. The window-type protective wall 1 is also provided with multiple drainage holes 9. The drainage holes 9 are made of PVC pipes with apertures of 5- 10cm, with a spacing of 2-3m, and the inlet end is wrapped with a reverse-filtration geotextile. The multiple drainage holes 9 are staggered up and down. When there is water seepage on the slope, they should be appropriately densed, and the exit height of the lowest drainage hole 9 should be It should be more than 30cm higher than the horizontal height of the crushing platform 12 and the side ditch 13 .

Example 6

This embodiment is also provided with expansion joints on the basis of Embodiment 1. There are also expansion joints 11 between the adjacent window-type protective walls 1. The width of the gap is 2cm-3cm. The two side walls in the gap should be They should be flush and straight, and the gaps should be filled with asphalt and other waterproof materials.

Example 7

This embodiment limits the specific structural settings of the greening window on the basis of Embodiment 1. The greening window 14 has a diamond-shaped structure with a size of 3.5m×2.3m, and there are multiple installations inside the greening window 14. The hollow hexagonal blocks 15 are closely arranged in the green window 14 , and soil is cultivated inside the hollow hexagonal blocks 15 , and planting grass 16 is implanted.

Example 8

This embodiment provides a preferred manufacturing material based on Embodiment 1. The material of the window-type protective wall 1 is C20 rubble concrete 10, and the concrete label is C20. Before concrete pouring, it can be pre-formed. Add an appropriate amount of flakes, the compressive strength value of the flakes is ≥30MPa, the softening coefficient is ≥0.75, and the volume of the flakes occupied by the wall should be about 25% of the total volume of the wall.

Example 9

As shown in Figures 2 and 4, this embodiment is a specific size setting of the above embodiment. The size units in the figures are all in cm. Please refer to Figures 2 and 4. In this embodiment, one of the window The wall height of the type protective wall 1 is 10m, and two ear walls 8 are arranged up and down on one side of the wall back 7. The ear wall 8 at the lower position is set to a height of 200cm, and the ear wall 8 at the upper position is set to a height of 600cm, the wall width and wall height of the ear wall 8 are both 100cm, the width of the wall top 4 is 40cm, the width of the broken platform 12 is 100cm, the size of the greening window 14 is 350cm×230cm, and the greening window 14 It is divided into 3 columns along the horizontal direction, and the distance between adjacent greening windows 14 is 80cm.

Example 10

As shown in Figures 3 and 5, this embodiment is another specific size setting of Embodiment 9. The size units in the figures are all in cm. Please refer to Figures 3 and 5. In this embodiment, a The wall height of the window-type cladding wall 1 is 8m, and two ear walls 8 are arranged up and down on one side of the wall back 7. The ear wall 8 at the lower position is set to a height of 150cm, and the ear wall 8 at the upper position is set to a height of 150 cm. is 450cm, the wall width and wall height of the ear wall 8 are both 100cm, the width of the wall top 4 is 40cm, the width of the broken platform 12 is 100cm, the size of the greening window 14 is 350cm×230cm, and the greening window 14 It is divided into 2 columns along the horizontal direction, and the distance between adjacent greening windows 14 is 130cm.

Example 11

As shown in Figure 6, in this embodiment, the weathered soft rock cutting slope window-type protective wall protection structure of the present utility model can be constructed by referring to the following steps:

First, the site is leveled, measured and laid out. After the staff are in place and the construction materials and construction equipment are ready, the excavation and slope leveling of the weathered soft rock cutting slopes will begin according to the designed slope rate. At the same time, the corresponding ear wall parts The grooves are also excavated. For general slate and sandy slate slopes, the slope ratio of the strongly weathered layer is 1:1-1:1.5, and the slope ratio of the weathered layer is 1:0.75-1:1.25. The local area will be determined according to the occurrence of the unfavorable structural surface of the soft rock. , the slope ratio 1:n1 of the window-type protective wall protective structure wall can be: 1:0.75, 1:1, 1:1.25, 1:1.5, correspondingly the slope ratio 1:n2 of the wall back is: 1:0.70, 1:0.95, 1:1.2, 1:1.45;

After the slope excavation is completed, the deviation between the completed slope and the designed slope should be checked in time. If there are over-excavation or under-excavation, manual trimming should be carried out. At the same time, the slope excavation process should be excavated step by step and protected step by step. After the slope excavation is completed, protection construction should be carried out in a timely manner, and the slope should not be exposed for a long time. And when the slope is long, the construction method of skip excavation and construction of protective walls should be used;

When excavating the foundation trench for the protective wall, the base should be solid and linear. After excavation of the foundation trench, the geological conditions should be verified in time. When the bearing capacity of the foundation does not meet the requirements, gravel should be used to replace the foundation;

Cutting slopes should be constructed in stages along the height direction. Construction is generally carried out in steps of 8m or 10m. Steps should be placed at the interfaces of various layers as much as possible. A movable platform should be set up between each level to facilitate construction and greening. At the same time, the slope is divided into several sections along the length of the slope, and the protective wall construction is carried out in sections. After setting up the formwork, put in the flakes to ensure that the flakes should be evenly arranged. The volume of the flakes is generally about 25% of the wall, and the flakes should be medium-hard rock that is not weathered and has no cracks (compressive strength value ≥ 30MPa) , The surface of the flake stone should be clean, and the block diameter should not exceed 20cm. If there is sludge on the surface of the rubble, it should be rinsed with water in advance;

Expansion joints should be reserved between each section of window-type protective walls. When the geology of the base changes, settlement joints should be set up. Expansion joints and settlement joints can be combined;

The wall back of the window-type protective wall should be in close contact with the slope surface, and the embedded part of the protective wall into the base and the wall should be poured at the same time. During pouring, in order to speed up the construction efficiency, pumped concrete can be used for pouring, and the concrete grade is C20;

After the pouring of the protective wall is completed, it should be covered and sprinkled with water for curing in time, and the curing time should not be less than 7 days;

The movable platform needs to be concrete hardened;

The interception ditch is cast in situ using C20 concrete. Similarly, expansion joints are set every 10m-15m, and the joints are filled with asphalt and other waterproof materials;

After the concrete strength of the window-type protective wall reaches the design strength, the diamond-shaped window is filled with hollow hexagonal blocks, and the interior is cultivated with grass and greening;

In order to facilitate road maintenance, stepped steps can be set at appropriate locations on the protective wall, and handrails can be set up when necessary.

The above descriptions are only preferred embodiments of the present utility model, not all embodiments. Anyone should know the structural changes made under the inspiration of the present utility model, and any technical solutions that are the same or similar to the present utility model. , all belong to the protection scope of this utility model.

Claims (5)

1. A weathering soft rock cutting side slope window formula facing wall protective structure, its characterized in that: comprises a window type facing wall body (1) and a greening window body (14); the window type facing wall body (1) is an inclined wall body, the wall back (7) of the window type facing wall body is tightly covered on the surface of a side slope, and the bottom (5) of the wall body is buried in the slope toe of the side slope; a plurality of greening window bodies (14) are further arranged in the window type facing wall body (1), and the greening window bodies (14) are uniformly distributed in the window type facing wall body (1) in a longitudinal and transverse mode;

the movable platform (3) is positioned at the top (4) of the wall body of the window type facing wall body (1), and the movable platform (3) is stably connected with the top (4) of the wall body; the intercepting ditch (2) is arranged between the movable platform (3) and the side slope surface;

an expansion joint (11) is arranged between the adjacent window type facing walls (1);

the greening window body (14) is diamond-shaped in structure, and a plurality of hollow hexagonal blocks (15) are arranged in the greening window body (14).

2. The weathered soft rock cutting slope window facing wall protection structure of claim 1, wherein: the wall back (7) side of the window type facing wall body (1) is also provided with a protruding earwall (8), and the earwall (8) is matched with an earwall groove on the side slope surface.

3. The weathered soft rock cutting slope window facing wall protection structure of claim 1, wherein: the novel window type facing wall is characterized by further comprising a breaking table (12) and a side ditch (13), wherein the breaking table (12) is connected with the wall surface (6) of the window type facing wall body (1) and is positioned at the slope toe of the side slope, and the side ditch (13) is further arranged on one side, far away from the side slope, of the breaking table (12).

4. The weathered soft rock cutting slope window facing wall protection structure of claim 3, further comprising: the window type facing wall body (1) is internally provided with a plurality of rows of water discharge holes (9), the water discharge holes (9) are arranged in a vertically staggered mode, and the outlet height of the lowest water discharge hole (9) is higher than the horizontal height of the breaking table (12) and the side ditch (13).

5. The weathered soft rock cutting slope window facing wall structure according to any one of claims 1-4, wherein: the material of the window type facing wall body (1) is concrete.