Bridge foundation protection structure close to steep wall

Abstract

The utility model discloses a bridge foundation protection structure close to a steep wall. The bridge foundation protection structure comprises an anchoring and shotcreting protection structure and an anchor cable structure. The anchoring and shotcreting protection structures are arranged on the upper section of the well digging foundation, the corresponding steep wall slope surface of the foundation and the steep wall slope surface on the outer side of the foundation; the anchor cable structures are arranged on the slope face of the foundation backer side of the well digging foundation and the slope face of the steep wall on the outer side of the foundation; greening grooves are formed in the foundation corresponding to the steep wall slope surface and the outer side of the steep wall slope surface on the outer side of the foundation; passive protective nets are arranged on the corresponding steep wall slope face of the foundation and the slope face on the outer side of the steep wall slope face on the outer side of the foundation. The bridge foundation protection structure close to the steep wall aims to overcome the existing defects, and the stability of the whole well digging foundation is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bridge foundation protection structure near precipice. BACKGROUND

[0002] When high-speed railway is laid in mountainous area, a large number of bridges and tunnels need to be set to pass through.When the pier is located in the mountainous section with complex topography and poor geological conditions, and the foundation is near precipice, the construction machinery is inconvenient to enter, the operation safety risk is high, and the structure is unstable.

[0003] The traditional pile foundation is not stable due to the failure of normal construction of equipment, which easily leads to unstable structure, therefore, the bridge foundation protection structure near precipice is provided for the above problems. UTILITY MODEL CONTENT

[0004] The utility model discloses a bridge foundation protection structure near precipice, which overcomes the defects of the prior art and increases the stability of the entire well foundation.

[0005] The technical scheme for realizing the above object is as follows: a bridge foundation protection structure near precipice, comprising an anchor spray protection structure and an anchor cable structure; the anchor spray protection structure is arranged on the upper section of the well foundation, the foundation corresponding precipice slope surface and the foundation outer precipice slope surface; the anchor cable structure is arranged on the foundation mountain side slope surface and the foundation outer precipice slope surface; a greening groove is arranged outside the foundation corresponding precipice slope surface and the foundation outer precipice slope surface; a passive protection net is arranged on the outer slope surface of the foundation corresponding precipice slope surface and the foundation outer precipice slope surface.

[0006] Preferably, the anchor spray protection structure comprises a plurality of anchor rods and net spray concrete, the plurality of anchor rods are arranged on the upper section of the well foundation, the foundation corresponding precipice slope surface and the foundation outer precipice slope surface respectively, and then the net spray concrete is arranged.

[0007] Preferably, the anchor cable structure comprises a precipice slope surface anchor cable, and the precipice slope surface anchor cable is connected with the foundation outer precipice slope surface.

[0008] Preferably, the anchor cable structure further comprises a well foundation anchor cable, and the well foundation anchor cable is connected with the foundation mountain side slope surface.

[0009] Preferably, the greening groove is formed by stacking of mortar rubble.

[0010] Preferably, the anchor spray protection structure further comprises a drain hole, one PVC pipe is arranged in each drain hole, and the pipe is wrapped with non-woven geotextile.

[0011] The beneficial effects of this utility model are as follows: This bridge foundation protection structure near a steep slope increases the stability of the entire well foundation by installing anchor-sprayed protective structures on the upper section of the foundation, the slope of the steep slope corresponding to the foundation, and the slope of the steep slope outside the foundation; installing anchor cable structures on the slope of the foundation on the side facing the mountain and the slope of the steep slope outside the foundation; installing greening troughs on the slope of the steep slope corresponding to the foundation and the outer slope of the steep slope outside the foundation; and installing passive protective netting on the slope of the steep slope corresponding to the foundation and the outer slope of the steep slope outside the foundation. It is convenient to construct, has low cost, good structural stability, and ensures construction and operational safety. Attached Figure Description

[0012] Figure 1 This is a top view of the bridge foundation protection structure near a steep cliff according to this utility model;

[0013] Figure 2 This is a detailed diagram showing the arrangement of anchor cables on a steep slope according to this utility model.

[0014] Figure 3 This is a detailed diagram showing the location arrangement of the anchor cables for the well foundation of this utility model;

[0015] Figure 4 This is a detailed drawing of the anchor spray protection structure of this utility model;

[0016] Figure 5 This is a detailed diagram of the connection of the well foundation anchor cable of this utility model;

[0017] Figure 6 This is a detailed diagram of the connection of the anchor cable on the steep slope of this utility model;

[0018] Figure 7 This is a detailed drawing of the greening trough of this utility model.

[0019] In the diagram: 1. Well foundation; 1-1. Slope of foundation against the mountain; 2. Upper slope of foundation; 3. Slope of foundation corresponding to steep wall; 4. Slope of foundation outside steep wall; 5. Passive protection net; 6. Anchor bolt; 7. Sprayed concrete; 8. Drainage hole; 9-1. Anchor cable of steep wall slope; 9-2. Anchor cable of well foundation; 10. Pier; 11. Masonry; 12. Green trough. Detailed Implementation

[0020] The technical scheme of the utility model will be described clearly and completely in connection with the drawings. In the description of the utility model, it should be explained that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as a limitation on the utility model that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and "third" are only for the purpose of description, and cannot be understood as indicating or implying the importance of the opposite.

[0021] The utility model will be further described in connection with the drawings.

[0022] As shown in 1-7, a bridge foundation protection structure near a steep wall comprises anchor spray protection structure and anchor cable structure; the anchor spray protection structure is arranged on the foundation upper section 2, the foundation corresponding steep wall slope surface 3 and the foundation outer steep wall slope surface 4 of the well foundation 1; the anchor cable structure is arranged on the foundation abutment side slope surface 1-1 and the foundation outer steep wall slope surface 4 of the well foundation 1; the greening groove 12 is arranged outside the foundation corresponding steep wall slope surface 3 and the foundation outer steep wall slope surface 4; the passive protection net 5 is arranged on the outside slope surface of the foundation corresponding steep wall slope surface 3 and the foundation outer steep wall slope surface 4. The height of the foundation corresponding steep wall slope surface 3 and the foundation outer steep wall slope surface 4 (10m on each side) is about 70m, and the slope is 20 degrees.

[0023] Specifically, the passive protection net 5 is arranged at 5m outside the steep wall, and a 1.8m reinforced concrete column metal mesh fence is used. Before slope construction, loose dangerous stones on the slope should be removed, and uneven places on the slope are filled with C25 concrete before net hanging and concrete spraying. The slope reinforcement and protection construction sequence is from top to bottom.

[0024] Specifically, the well foundation 1 has a length of 11m, a width of 7m and a depth of 38m, and adopts artificial vertical excavation full grouting construction. The upper part is provided with a pier body 10.

[0025] Specifically, the foundation upper slope surface 2 is provided with anchor spray protection, and the slope is 1:0.75.

[0026] Specifically, the anchor spray protection structure comprises a plurality of anchor rods 6 and net spray concrete 7, the plurality of anchor rods 6 are arranged on the foundation upper section 2, the foundation corresponding steep wall slope surface 3 and the foundation outer steep wall slope surface 4 respectively, and then the net spray concrete 7 is arranged. The anchor rod 6 is 10m long and has a spacing of 4m, and the net spray concrete 7 adopts a 8mm diameter steel mesh (spacing 0.2x0.2m) and a 15cm thick C25 sprayed concrete.

[0027] Specifically, the anchor cable structure includes the cliff slope anchor cable 9-1, and the cliff slope anchor cable 9-1 is connected with the outer cliff slope 4 of the foundation. The cliff slope anchor cable 9-1 is provided with 6 rows of anchor cables with a horizontal distance of 3 m and a vertical distance of 4 m, and the anchor cable has an angle of 10 degrees with the horizontal plane downward, a free section of 5 m (12 m for the first row at the top), and an anchoring section of 10 m.

[0028] Specifically, the anchor cable structure further includes the foundation pit anchor cable 9-2, and the foundation pit anchor cable 9-2 is connected with the slope surface 1-1 of the foundation on the side of the abutment. The slope surface 1-1 of the foundation on the side of the abutment is provided with 3 rows of 5 anchor cables with a horizontal distance of 3 m and a vertical distance of 4 m, and the anchor cable has an angle of 10 degrees with the horizontal plane downward, a free section of 6 m, and an anchoring section of 10 m.

[0029] Specifically, the green belt groove 12 is piled up by the mortar-paved stone 11. Shrubs, evergreen ivy or ivy gourd are planted in the groove to green the slope.

[0030] Specifically, the anchor-spraying protection structure further includes the water outlet hole 8, and a PVC pipe is arranged in each water outlet hole 8, and non-woven geotextile is wrapped behind the pipe. A 5 cm diameter PVC pipe with a length of 25 cm is used, and 450 g / m 2 of non-woven geotextile is wrapped behind the pipe, and the pipe needs to be inclined outward by 4%, and is arranged on the slope surface every 2-3 m.

[0031] The bridge foundation protection structure near the cliff is provided with the anchor-spraying protection structure on the upper section 2 of the foundation pit foundation 1, the cliff slope surface 3 corresponding to the foundation, and the outer cliff slope 4 of the foundation; the anchor cable structure is arranged on the slope surface 1-1 of the foundation pit foundation 1 on the side of the abutment and the outer cliff slope 4 of the foundation; the green belt groove 12 is arranged outside the cliff slope surface 3 corresponding to the foundation and the outer cliff slope 4 of the foundation; and the passive protection net 5 is arranged on the outer slope surface of the cliff slope surface 3 corresponding to the foundation and the outer cliff slope 4 of the foundation. The stability of the entire foundation pit foundation is improved, the construction is convenient, the cost is low, the structure is stable, and the construction and operation safety are ensured.

[0032] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the same. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A bridge foundation protection structure near a steep wall, characterized by, The anchor shot protection structure and anchor cable structure; on the basis of the foundation (1) of the foundation upper section (2), the foundation corresponding steep slope (3) and the foundation outside steep slope (4) set up the anchor shot protection structure; on the basis of the foundation (1) of the foundation abutment side slope (1-1) and the foundation outside steep slope (4) set up the anchor cable structure; The foundation corresponding steep slope (3) and the foundation outside steep slope (4) outside set up the green groove (12); The foundation corresponding steep slope (3) and the foundation outside steep slope (4) outside slope set up passive protection net (5).

2. The bridge foundation protection structure near a steep wall according to claim 1, characterized by, The anchor shot protection structure includes a plurality of anchor rods (6) and shotcrete (7), a plurality of anchor rods (6) are respectively arranged on the foundation upper section (2), the foundation corresponding steep slope (3) and the foundation outside steep slope (4), and then the shotcrete (7) is arranged.

3. The bridge foundation protection structure near a steep slope according to claim 1, wherein The anchor cable structure includes a steep slope anchor cable (9-1), and the steep slope anchor cable (9-1) is connected with the foundation outside steep slope (4).

4. The bridge foundation protection structure near a steep slope according to Claim 1, wherein The anchor cable structure further includes a foundation anchor cable (9-2), and the foundation anchor cable (9-2) is connected with the foundation abutment side slope (1-1).

5. The bridge foundation protection structure near a steep slope according to Claim 1, wherein The green groove (12) is piled up by mortar paving flagstone (11).

6. The bridge foundation protection structure near a steep slope according to claim 2, wherein The anchor shot protection structure further includes a water drain hole (8), a PVC pipe is arranged in each water drain hole (8), and the pipe is wrapped with non-woven geotextile.

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