CN102888855B - Combined balance weight retaining wall - Google Patents

Abstract

The invention discloses a combined balance weight retaining wall. It is suitable for all kinds of counterweight retaining walls, especially for counterweight retaining walls under hillside terrain conditions. The retaining wall includes a lower wall and an upper wall; the height ratio of the lower wall to the upper wall is 2 to 3:1; the upper wall consists of a bottom plate as a counterweight platform and a vertical plate connected to the bottom plate constitute. The combined retaining wall converts the earth pressure into the earth pressure and friction force borne by the upper reinforced concrete, which greatly increases the safety and applicability of the retaining wall. On the other hand, the vertical wall back is less earth pressure than the traditional sloping type, and the cross-sectional area is greatly reduced, that is, the amount of materials used is reduced, thereby reducing the amount of engineering and reducing the cost of the project.

Description

A combined counterweight retaining wall

technical field

The invention relates to a retaining wall, in particular to a combined counterweight retaining wall.

Background technique

At present, the retaining walls with a height of more than 8 meters are generally used as counterweight retaining walls or reinforced concrete retaining walls made of flake masonry. Generally speaking, due to the high earth pressure on the half part of the balance weight retaining wall, the phenomenon of excessive eccentricity and tension is likely to occur at the position of the balance weight platform, and the back of the half part of the retaining wall is generally made to tilt In addition to the width of the balance weight platform, the cross-section of the balance weight retaining wall is generally larger, especially in the case of a load on the back of the wall or a slope on the back of the wall.

At present, the counterweight retaining wall is widely used in engineering design. Compared with the simple gravity retaining wall, it can save more than 20% to 30% of building materials, and can obtain relatively uniform foundation stress. At present, the retaining walls with a height of more than 8 meters generally adopt counterweight retaining walls or reinforced concrete retaining walls made of flake masonry. However, the counterweight platform of the existing counterweight retaining wall generally has the problems of excessive eccentricity and tension, cracks or even damage. And because it is limited by the section, it affects the increase of the height of the retaining wall.

Contents of the invention

The present invention aims to overcome the deficiencies of the prior art, and provides a new retaining wall structure for the case where the total height of the retaining wall exceeds 8 meters or higher.

In order to achieve the above object, the technical solution provided by the invention is:

The combined balance weight retaining wall includes a lower wall 1 and an upper wall 2; the height ratio of the lower wall 1 to the upper wall 2 is 2 to 3:1; the upper wall 2 is used as a weighing platform The bottom plate 3 and the vertical plate 4 connected to the bottom plate 3 are composed; the angle α between the vertical plate 4 and the bottom plate 3 is ≤90°; the slope of the lower wall wall 5 is 1:0.05～0.25.

Wherein, the material of the lower wall 1 is masonry rubble or rubble concrete, preferably masonry rubble; the material of the upper wall 2 is reinforced concrete or fiber concrete, preferably reinforced concrete.

In addition, the upper and lower walls can be connected in the following ways:

A. The bottom surface of the bottom plate 3 is provided with tenons or grooves, and the top surface of the lower wall 2 is provided with an insertion structure corresponding to the tenons or grooves at the bottom of the bottom plate 3;

B. The bottom of the bottom plate 3 is provided with a flange that is fastened to the top edge of the lower wall 2;

C. The bottom surface of the bottom plate 3 and the top surface of the lower wall 2 are both rough planes.

As an improvement, in order to adapt to a higher height of the upper retaining wall, a buttress 6 is provided between the vertical plate 4 and the bottom plate 3 .

In the building construction of the present invention, the lower rubble wall is first built on the foundation, and then the upper reinforced concrete structure is poured on the basis of the lower wall. Sections of reinforced concrete and rubble walls can provide friction in a variety of ways, or convert friction into shear forces for the rubble walls to keep the upper and lower walls working together effectively.

Compared with prior art, the beneficial effect of the present invention is:

In the present invention, considering saving, the upper retaining wall is made into a vertical or cantilever reinforced concrete structure with the back of the wall, and fully utilizes the advantages of high strength of reinforced concrete and good tensile performance of steel bars, which is lower than that of the inclined type in the traditional method. The earth pressure is smaller, and the cross-sectional area is greatly reduced. Reducing the cross-sectional area means reducing the amount of materials used, thereby reducing the amount of engineering and reducing engineering investment, and the strength of reinforced concrete is also higher. The advantage of this combined retaining wall is that it can convert the earth pressure into the shear stress or friction force borne by the upper reinforced concrete, which greatly increases the safety and applicability of the retaining wall.

Taking the total height of the wall body at 9.6m as an example, the slope of the soil body at the back of the wall is 1.5:1, and the total width of the wall body at the balance platform of the retaining wall built by the traditional method is 3.94m, while the earth retaining wall built by the method of the present invention The total width of the wall is 3.06m, which is 0.88m less than the traditional method. Reducing the total width will reduce the amount of excavated earthwork and save land use. If a buttress is added in the middle of the upper retaining wall, the upper structure can be made higher to increase the height of the entire retaining wall.

This combined balance weight retaining wall is especially suitable for the construction of retaining walls in hillside areas. In other occasions, it is also possible to provide a more space-saving counterweight retaining wall solution.

Description of drawings

Fig. 1 is a structural representation of an embodiment of the present invention;

Fig. 2 is the structural representation of another embodiment of the present invention;

Fig. 3 is the top view of Fig. 2;

Fig. 4 is the structural representation of another embodiment of the present invention;

Fig. 5 is a schematic structural view of another embodiment of the present invention;

In the figure: 1, the lower wall; 2, the upper wall; 3, the bottom plate; 4, the vertical plate; 5, the lower wall wall; 6, the buttress.

Detailed ways

Example 1

Referring to Fig. 1, the combined balance weight retaining wall includes a lower wall 1 and an upper wall 2; the height ratio of the lower wall 1 to the upper wall 2 is 2:1; The bottom plate 3 of the heavy platform and the vertical plate 4 connected to the bottom plate 3 are formed; the angle α between the vertical plate 4 and the bottom plate 3 is α=87°; the slope of the lower wall surface 5 is 1:0.05; the bottom plate 3 The bottom is provided with a flange fastened to the top edge of the lower wall 2 . Wherein, the material of the lower wall body 1 is mortar rubble; the material of the upper wall body 2 is reinforced concrete.

Example 2

Referring to Figure 2 and Figure 3, the combined balance weight retaining wall includes a lower wall 1 and an upper wall 2; the height ratio of the lower wall 1 to the upper wall 2 is 2:1; the upper wall 2 It is composed of a base plate 3 as a counterweight platform and a vertical plate 4 connected to the base plate 3; the angle α=75° between the vertical plate 4 and the base plate 3; the slope of the lower wall wall 5 is 1:0.25; The bottom of the bottom plate 3 is provided with a flange which is fastened to the top edge of the lower wall 2 . Wherein, the material of the lower wall body 1 is mortar rubble; the material of the upper wall body 2 is reinforced concrete. A buttress 6 is provided between the vertical plate 4 and the bottom plate 3 .

Example 3

Referring to Fig. 4, the combined balance weight retaining wall includes a lower wall 1 and an upper wall 2; the height ratio of the lower wall 1 to the upper wall 2 is 2:1; the upper wall 2 is formed as a balance The base plate 3 of the heavy platform and the vertical plate 4 connected with the base plate 3 constitute; the angle α=75° between the vertical plate 4 and the base plate 3; the slope of the lower wall wall 5 is 1:0.25; the base plate 3. Tenons or grooves are provided on the surface of the bottom, and the top surface of the lower wall 2 is provided with an insertion structure corresponding to the tenons or grooves at the bottom of the bottom plate 3. Wherein, the material of the lower wall body 1 is mortar rubble; the material of the upper wall body 2 is reinforced concrete.

Example 4

Referring to Fig. 5, the combined balance weight retaining wall includes a lower wall 1 and an upper wall 2; the height ratio of the lower wall 1 to the upper wall 2 is 2:1; the upper wall 2 is formed as a balance The base plate 3 of the heavy platform and the vertical plate 4 connected with the base plate 3 constitute; the angle α=75° between the vertical plate 4 and the base plate 3; the slope of the lower wall wall 5 is 1:0.25; the base plate 3. Both the bottom surface and the top surface of the lower wall 2 are rough planes. Wherein, the material of the lower wall body 1 is mortar rubble; the material of the upper wall body 2 is reinforced concrete.

Claims (6)

1. a combined type weight retaining wall, is characterized in that, described retaining wall comprises lower wall body (1) and upper wall body (2); Lower wall body (1) is 2 ~ 3:1 with the aspect ratio of upper wall body (2); Described upper wall body (2) is by the base plate (3) as weight platform and form with the riser (4) of base plate (3) one; Angle α≤90 ° of described riser (4) and base plate (3); The gradient of described lower wall body metope (5) is 1:0.05 ~ 0.25; Described lower wall body (1) material is mortar flag stone or rubble concrete; Described upper wall body (2) material is steel concrete or fibrous concrete.

2. retaining wall as claimed in claim 1, is characterized in that, be provided with counterfort (6) between described riser (4) and base plate (3).

3. retaining wall as claimed in claim 1, it is characterized in that, described lower wall body (1) material is mortar flag stone; Described upper wall body (2) material is steel concrete.

4. retaining wall as claimed in claim 1, it is characterized in that, described base plate (3) lower surface face is provided with tenon or groove, and described lower wall body (2) end face is provided with the plug-connection structure corresponding with base plate (3) bottom tongue or groove.

5. retaining wall as claimed in claim 1, is characterized in that, described base plate (3) bottom is provided with the flange being fastened on lower wall body (2) top.

6. retaining wall as claimed in claim 1, it is characterized in that, described base plate (3) lower surface and lower wall body (2) end face are Rough Horizontal Plane.