Retaining wall for high and steep slope

Abstract

A retaining wall for a high and steep slope is characterized in that a preset groove is dug in the slope, a plurality of vertical anchor rod holes and transverse anchor rod holes are formed in the preset groove, vertical anchor rods are arranged in the vertical anchor rod holes, transverse anchor rods are arranged in the transverse anchor rod holes, a retaining wall is poured in the preset groove, and a plurality of lateral steel bar holes for mounting second connecting bars are reserved in the upper portion of the retaining wall; lateral preformed holes for mounting the first connecting ribs are formed in the side slope, and the first connecting ribs and the second connecting ribs are connected through buffers; the cross-shaped steel and the buffers are adopted as side key resisting parts, on one hand, the side key resisting capacity can be brought into full play, on the other hand, the stability of the retaining wall can be greatly improved, the side key resisting capacity is not singly relied on any more, the strength of the retaining wall is improved, and the probability of natural disasters at the high and steep slope is reduced; and on the other hand, the excavation depth of on-site slope excavation can be greatly reduced, the construction period is effectively shortened, and obvious environmental benefits and social benefits are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of high and steep slope support, and particularly relates to a retaining wall for high and steep slopes. Background Art

[0002] In recent years, with the rapid economic development, the construction of infrastructure such as roads, bridges, water conservancy, hydropower and housing has also developed rapidly. The urbanization in the developed coastal areas is more complete, and the development in the remote areas is more complete. With the construction and development of urbanization, the excavation of mountain quarrying directly leads to the exposure of large areas of mountain slopes, the ecological system is seriously damaged, and there are serious soil erosion phenomena. It will also cause siltation of rivers, lakes and reservoirs, exacerbate flood disasters, and is not conducive to the stability and safety of public buildings, seriously endangering public safety. Therefore, for the support project on high and steep slopes, the method of building a retaining wall can be adopted to prevent disasters such as debris flow and landslide, protect the ecological environment and public safety. The existing retaining wall adopts the method of driving rock bolts into the bottom of the retaining wall and pouring the bolts and the retaining wall integrally to improve its uplift resistance. This structure is applicable to high and steep slopes with exposed mountains, and the exposed area is a rock layer. By adding anti-side keys and driving rock bolts downward, its anti-side stiffness is improved, so as to resist the upper soil pressure. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the above-mentioned prior art, and provide a retaining wall for high and steep slopes with reasonable design, simple structure, improved force transmission performance, improved anti-side ability and effective impact resistance.

[0004] The technical solution adopted to solve the above technical problem is: a retaining wall for high and steep slopes, in which a preset groove is excavated on the slope, a plurality of vertical bolt holes are vertically arranged at the bottom of the preset groove, and a plurality of horizontal bolt holes are vertically arranged on the side wall. Vertical bolts are arranged in the vertical bolt holes, and horizontal bolts are arranged in the horizontal bolt holes. A retaining wall is poured in the preset groove. A plurality of lateral steel bar holes are reserved at the upper part of the retaining wall, lateral reserved holes are arranged on the slope corresponding to the lateral steel bar holes, first connecting bars are arranged in the lateral reserved holes, second connecting bars are arranged in the lateral steel bar holes, and the first connecting bar and the second connecting bar are connected by a buffer.

[0005] The retaining wall of the utility model is of a convex structure, with lateral steel bar holes arranged at the upper part of the retaining wall, and integrally poured with the vertical bolts and horizontal bolts exposed from the preset groove at the lower part.

[0006] The buffer of the utility model is: the first connecting rod extends into the sleeve and is connected with the first steel ball, the second connecting rod extends into the sleeve and is connected with the second steel ball, a spring is arranged between the first steel ball and the second steel ball, the first connecting rod is connected with the second connecting bar, and the second connecting rod is connected with the first connecting bar.

[0007] The first connecting rib and the second connecting rib of the present utility model are cross-shaped steel structures.

[0008] Since the retaining wall of the present utility model includes a rock anchor part, a concrete retaining wall part, and a lateral resistance key part, the retaining wall is arc-shaped parallel to the contour line. The width of the wall body buried in the rock layer at the bottom of the wall is greater than that of the upper wall body. Rock anchors are drilled at equal distances at the bottom of the retaining wall, and grout is poured. The anchors bear shear force and are integrally cast with the retaining wall to improve its uplift resistance; Reinforcement holes are reserved laterally, and cross-shaped steel is directly inserted below the slope surface, and post-cast concrete is used for connection. Force is transmitted through the mechanical biting force between the reinforcement and the concrete to resist the upper soil pressure and provide lateral support to improve its lateral stiffness; Above the ground, a lateral resistance key structure connected by cross-shaped steel and a buffer is adopted to provide lateral support and resist the upper soil pressure. Using cross-shaped steel and a buffer as the lateral resistance key part can, on the one hand, give full play to the lateral resistance capacity of the lateral resistance key, and on the other hand, can greatly improve the stability of the retaining wall. Instead of relying solely on the lateral resistance capacity of the rock anchor, the lateral resistance depends on the combined action of the lateral resistance key and the rock anchor, which improves the strength of the retaining wall, reduces the probability of natural disasters occurring at high and steep slopes. On the other hand, it can greatly reduce the excavation depth of on-site slope excavation, effectively reduce the construction period, reduce environmental pollution and labor demand, and has obvious environmental and social benefits. The buffer can effectively resist impact force and improve the bearing capacity during natural disasters. Description of the Drawings

[0009] Figure 1 is the front sectional view of the present utility model.

[0010] Figure 2 is the side sectional view of the present utility model.

[0011] Figure 3 is the top view of the present utility model.

[0012] Figure 4 is Figure 1 the structural schematic diagram of the buffer 9 in

[0013] In the figure: 1, slope; 2, vertical anchor; 3, vertical anchor hole; 4, preset groove; 5, horizontal anchor hole; 6, horizontal anchor; 7, laterally reserved hole; 8, first connecting rib; 9, buffer; 10, second connecting rib; 11, laterally reserved reinforcement hole; 12, retaining wall; 9-1, first connecting rod; 9-2, first steel ball; 9-3, spring; 9-4, second steel ball; 9-5, second connecting rod; 9-6, sleeve. Detailed Description of the Preferred Embodiments

[0014] The present utility model will be further described in detail below with reference to the drawings and embodiments, but the present utility model is not limited to these embodiments.

[0015] Embodiment 1

[0016] In Figure 1 , a retaining wall for a high and steep slope involved in the present utility model, a preset groove 4 is excavated on a slope 1, a number of vertical anchor holes 3 are vertically arranged at the bottom of the preset groove 4, and a number of horizontal anchor holes 5 are vertically arranged on the side wall. The numerical quantity of the vertical anchor holes 3 and the horizontal anchor holes 5 is specifically determined according to the size of the preset groove 4. A vertical anchor rod 2 is arranged in the vertical anchor hole 3, and a horizontal anchor rod 6 is arranged in the horizontal anchor hole. The anchor rod is 50 mm away from the bottom of the hole, and a fine aggregate concrete grouting body is grouted. The length of the anchor rod exposed from the reserved groove 4 is 400 mm. A retaining wall 12 is cast in the preset groove 4. The retaining wall 12 in this embodiment is of a convex structure. The lower part of the retaining wall 12 is integrally cast with the vertical anchor rod 2 and the horizontal anchor rod 6 exposed from the preset groove 4 to improve its integrity. The anchor rod can provide uplift resistance and lateral shear resistance. A number of lateral steel bar holes 11 are reserved in the upper part of the retaining wall 12. A lateral reserved hole 7 is arranged on the slope 1 corresponding to the lateral steel bar hole 11. A first connecting bar 8 is arranged in the lateral reserved hole 7, and a second connecting bar 10 is arranged in the lateral steel bar hole 11. The first connecting bar 8 and the second connecting bar 10 are connected by a buffer 9. Further, the buffer 9 is composed of a first connecting rod 9-1, a first steel ball 9-2, a spring 9-3, a second steel ball 9-4, a second connecting rod 9-5, and a sleeve 9-6. The first connecting rod 9-1 extends into the sleeve 9-6 and is connected to the first steel ball 9-2. The second connecting rod 9-5 extends into the sleeve 9-6 and is connected to the second steel ball 9-4. A spring 9-3 is arranged between the first steel ball 9-2 and the second steel ball 9-4. The first connecting rod 9-1 is connected to the second connecting bar 10, and the second connecting rod 9-5 is connected to the first connecting bar 8. The first connecting bar 8 and the second connecting bar 10 are of a cross-shaped steel structure. The cross-shaped steel is inserted into the post-cast concrete of the concrete retaining wall 12 for connection. The use of the cross-shaped steel can effectively increase the contact area at the post-cast connection, improve the mechanical biting force between the steel bar and the concrete, improve the force transmission performance, and improve the lateral resistance ability. The addition of the buffer 9 can effectively resist the impact force and improve its resistance performance under the landslide disaster.

Claims

1. A retaining wall for high and steep slopes, characterized in that: A preset groove (4) is excavated on the slope (1), a plurality of vertical anchor holes (3) are vertically arranged at the bottom of the preset groove (4), a plurality of transverse anchor holes (5) are vertically arranged on the side wall, a vertical anchor (2) is arranged in the vertical anchor hole (3), a transverse anchor (6) is arranged in the transverse anchor hole, a retaining wall (12) is cast in the preset groove (4), a plurality of lateral steel bar holes (11) are reserved on the upper part of the retaining wall (12), lateral reserved holes (7) are arranged on the slope (1) corresponding to the lateral steel bar holes (11), a first connecting bar (8) is arranged in the lateral reserved hole (7), a second connecting bar (10) is arranged in the lateral steel bar hole (11), and the first connecting bar (8) and the second connecting bar (10) are connected via a buffer (9).

2. A retaining wall for high and steep slopes according to claim 1, characterized in that: The retaining wall (12) is a convex structure, with lateral reinforcement holes (11) arranged on the upper part of the retaining wall (12), and the lower part being integrally cast with the vertical anchor rods (2) and the transverse anchor rods (6) exposed in the preset grooves (4).

3. A retaining wall for high and steep slopes according to claim 1, characterized in that The buffer (9) comprises: a first connecting rod (9-1) extending into a sleeve (9-6) and connected to a first steel ball (9-2); a second connecting rod (9-5) extending into the sleeve (9-6) and connected to a second steel ball (9-4); a spring (9-3) is arranged between the first steel ball (9-2) and the second steel ball (9-4); the first connecting rod (9-1) is connected to a second connecting rib (10); and the second connecting rod (9-5) is connected to a first connecting rib (8).

4. A retaining wall for high and steep slopes according to claim 1, characterized in that: The first connecting rib (8) and the second connecting rib (10) are cross-shaped steel structures.

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