CN219690580U - Gravity type retaining wall - Google Patents

Abstract

The utility model provides a gravity type retaining wall which is arranged outside soil and comprises a retaining wall body, a drain pipe and a fixing assembly; the drain pipe is arranged on the retaining wall body and is arranged in a downward inclined manner from inside to outside; the fixing component is a cuboid steel bar bracket formed by stacking a plurality of small cuboids along the vertical direction and the horizontal direction, and the edges of the small cuboids are first steel bars; the drain pipe is fixedly connected with the first steel bar and used for fixing the drain pipe. According to the utility model, the fixing assembly is arranged in the retaining wall body, so that the drain pipe is fixed by the first reinforcing steel bars to form a whole, the defect that water caused by flushing away the drain pipe directly contacts the wall body to reduce the service life of the wall body is avoided, and the defect that the water caused by displacement of the drain pipe cannot be timely discharged to cause unstable collapse of the wall body is avoided; and the cuboid reinforcing bar support is located the retaining wall body, can regard as the braced skeleton of retaining wall body, further improves the intensity of retaining wall body.

Description

Gravity type retaining wall

Technical Field

The utility model relates to the technical field of buildings, in particular to a gravity retaining wall.

Background

The gravity retaining wall is widely applied to projects such as roads, railways, municipal administration, rock soil and the like as a common retaining structure. The gravity type retaining wall is a retaining wall which resists the lateral pressure of soil body by means of self weight of the wall body, and can be used as masonry by using block stones, sheet stones and concrete precast blocks or integrally poured by using sheet stone concrete and concrete.

The existing gravity type retaining wall is mostly prepared by adopting concrete, meanwhile, in order to facilitate drainage, a drain pipe is usually arranged on the gravity type retaining wall, and the drain pipe is generally arranged in a downward inclined manner from inside to outside (the side close to the soil body is the inner side). Typically the drain pipe is simply placed through the wall and is not secured with a securing assembly. In the drainage process, particularly when the water quantity is large, a large amount of water can wash away the inclined drain pipe; meanwhile, along with long-term use, the hydrostatic pressure of the water in the drain pipe can cause the drain pipe to displace in the vertical direction; in addition, the drainage pipe is displaced by the vibration of the concrete during the construction of the retaining wall. The drain pipe is washed away, so that water can directly contact the wall body, and the service life of the wall body is reduced; the displacement of drain pipe can lead to water unable timely discharge to make the wall body bear extra hydrostatic pressure, the wall body takes place unstably to destroy, influences the life of wall body, increases construction and cost of maintenance simultaneously.

In view of the foregoing, there is a need for an improved gravity retaining wall that overcomes the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a gravity type retaining wall, which not only ensures that the drain pipe is fixed by a first reinforcing steel bar to form a whole by arranging a fixing component for fixing the drain pipe in the retaining wall body, thereby avoiding the defect that water caused by flushing away the drain pipe directly contacts with a wall body to reduce the service life of the wall body, but also avoids the defect that water caused by displacement of the drain pipe cannot be discharged in time to cause the wall body to collapse in an instable manner. And the cuboid reinforcing bar support is located the retaining wall body, can regard as the braced skeleton of retaining wall body, further improves the intensity of retaining wall body.

In order to achieve the above purpose, the present utility model provides a gravity retaining wall, which is disposed outside the soil body, and comprises a retaining wall body, a drain pipe and a fixing assembly; the drain pipe is arranged on the retaining wall body and is obliquely arranged from inside to outside downwards; the fixing component is a cuboid steel bar bracket formed by stacking a plurality of small cuboids along the vertical direction and the horizontal direction, and the edges of the small cuboids are first steel bars; the drain pipe is fixedly connected with the first steel bar and used for fixing the drain pipe.

As a further improvement of the utility model, the intersection point of the drain pipe and the small cuboid is fixed by binding a second reinforcing steel bar, and the diameter of the second reinforcing steel bar is smaller than that of the first reinforcing steel bar.

As a further improvement of the utility model, a blocking layer with the thickness of 25-45cm is arranged between the retaining wall body and the soil body and is used for blocking the soil body from flowing out through the drain pipe.

As a further improvement of the present utility model, a support body for stabilizing the retaining wall body is provided below the retaining wall body.

As a further improvement of the present utility model, the drain pipes penetrate through the retaining wall body in the thickness direction of the retaining wall body and are staggered in a straight or quincuncial shape; the drain pipe is a PVC pipe with the diameter of 10-20 cm.

As a further improvement of the utility model, the barrier layer is composed of 2-3 layers of sand, crushed stone or pebbles of different particle sizes, each layer is orthogonal to the water seepage direction, and the particle sizes of the different layers of the barrier layer are increased along the water seepage direction.

As a further improvement of the utility model, the support body comprises a base layer, a balance layer and a crushed stone layer which are sequentially arranged from top to bottom.

As a further improvement of the utility model, one side of the foundation layer, which is close to the soil body, is vertical, and one side of the foundation layer, which is far away from the soil body, is inclined with an inclination of 1:0.2; the thickness of the base layer is 20-40cm.

As a further improvement of the utility model, one side of the retaining wall body close to the soil body is vertical, and the other side of the retaining wall body far away from the soil body is inclined with the inclination of 1:0.15; the height of the retaining wall body is 3-6m.

As a further improvement of the utility model, the upper end and the lower end of the barrier layer in the vertical direction are respectively provided with a clay ramming layer with the thickness of 30-40cm, and the clay ramming layer is positioned on the balance layer; the clay ramming layer above is flush with the retaining wall body.

The beneficial effects of the utility model are as follows:

(1) According to the gravity type retaining wall, the fixing component for fixing the drain pipe is arranged in the retaining wall body, on one hand, the drain pipe is fixed by the first reinforcing steel bars to form a whole, the first reinforcing steel bars play a role in positioning the drain pipe, and the defect that water caused by flushing away the drain pipe directly contacts with a wall body to reduce the service life of the wall body is overcome; meanwhile, the defect that water caused by displacement of the drain pipe cannot be timely discharged, so that the wall body is unstable and collapses is avoided. On the other hand, the cuboid reinforcing steel bar bracket is positioned in the retaining wall body and can be used as a supporting framework of the retaining wall body, so that the strength of the retaining wall body is further improved. In addition, the retaining wall body adopts alkali slag concrete material, can increase the bearing capacity of gravity retaining wall when recycling solid waste, reduce the harm of moisture to the wall body, collect environmental protection and high strength as an organic whole.

(2) The utility model has simple structure, high strength and convenient drainage, and can solve the problem of unstable and damaged wall body caused by difficult drainage; and the construction is convenient.

Drawings

Fig. 1 is a schematic cross-sectional structure of a gravity type retaining wall according to the present utility model.

Fig. 2 is a perspective view of the gravity type retaining wall of the present utility model.

Fig. 3 is a schematic view of a fixing structure of the fixing assembly and the drain pipe.

Reference numerals

1-soil mass; 2-a retaining wall body; 3-a drain pipe; 4-fixing the assembly; a 5-barrier layer; 6-a support; 7-clay ramming layer; 8-clay; 61-a base layer; 62-balancing layer; 63-crushed stone layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in detail with reference to the accompanying drawings and specific embodiments.

It should be noted that, in order to avoid obscuring the present utility model due to unnecessary details, only structures and/or processing steps closely related to aspects of the present utility model are shown in the drawings, and other details not greatly related to the present utility model are omitted.

In addition, it should be further noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1 to 3, the present utility model provides a gravity retaining wall, which is disposed outside a soil body 1 and includes a retaining wall body 2, a drain pipe 3 and a fixing assembly 4. The drain pipe 3 is arranged on the retaining wall body 2, and the drain pipe 3 is obliquely arranged from inside to outside to downwards (one side close to the soil body 1 is the inner side); the fixing component 4 is a cuboid steel bar bracket formed by stacking a plurality of small cuboids along the vertical direction and the horizontal direction, and the edges of the small cuboids are composed of first steel bars; the drain pipe 3 is fixedly connected with the first reinforcing steel bar. The arrangement is that firstly, the drain pipe 3 is fixed by the first steel bar to form a whole, and the first steel bar plays a role in positioning the drain pipe 3, so that the drain pipe 3 is prevented from being punched out or shifted; secondly, the cuboid reinforcing bar support is located retaining wall body 2, can regard as the braced skeleton of retaining wall body 2, further improves retaining wall body 2's intensity.

As shown in fig. 1, one side of the retaining wall body 2 close to the soil body 1 is vertically arranged, one side far away from the soil body 1 is obliquely arranged, and the inclination gradient is 1:0.15, so that the stability of the retaining wall body 2 is improved. The retaining wall body 2 has a height of 3-6m, preferably 5m, which can be freely set according to the height of the soil body 1. Normally, the soil body 1 needs to be compacted before the retaining wall body 2 is poured.

In order to further improve the stability of the retaining wall body 2, a supporting body 6 is provided below it (the supporting body 6 is located under the ground, like a foundation). As shown in fig. 1, the support body 6 includes a base layer 61, a balance layer 62, and a crushed stone layer 63 which are sequentially disposed from top to bottom (casting process is sequentially performed from bottom to top). Specifically, (1) the crushed stone layer 63 provides a strong load bearing for the retaining wall body 2, and its thickness is 10-20cm, preferably 15cm. (2) the thickness of the balance layer 62 is 3-8cm, preferably 5cm; so set up, the surface treatment of the crushed stone layer 63 is flattened, providing balanced support for the casting of the retaining wall body 2. (3) the thickness of the base layer 61 is 20-40cm, preferably 30cm; one side of the soil body 1 is vertically arranged, and one side of the soil body 1 is obliquely arranged, wherein the inclination of the slope is 1:0.2; the outside of the inclined side of the foundation layer 61 is filled with clay 8, and the upper surface of the foundation layer 61 is flush with the upper surface (i.e., the ground) of the clay 8; so arranged, the stability of the foundation layer 61 is improved, further providing support for the retaining wall body 2. The end surfaces of the balance layer 62 and the crushed stone layer 63 are located in the same vertical plane as the lower vertex of the inclined surface of the base layer 61.

The retaining wall body 2, the foundation layer 61 and the balance layer 62 are made of one of concrete and alkali slag concrete, and preferably alkali slag concrete. The alkali slag concrete is prepared by mixing blast furnace slag, aggregate, an alkaline activator and water according to a certain proportion. Wherein the grain diameter of the blast furnace slag is 0.01-1mm; the alkaline activator is one or more of sodium hydroxide, sodium carbonate and sodium sulfate, preferably sodium hydroxide and sodium sulfate.

Because the concrete mainly comprises cement, aggregate, water, additives and the like, the content of the cement is higher. If the retaining wall body 2, the foundation layer 61 and the balance layer 62 are poured with concrete, firstly the cross-sectional area of the retaining wall body 2 is large, the amount of concrete used is large, namely the required amount of cement is large, and a large amount of carbon dioxide is generated in the production of cement, so that the greenhouse effect is caused; and the productivity of cement is severely limited at present. Therefore, if concrete is selected, not only construction and maintenance costs of the gravity type retaining wall are increased, but also serious stress is brought to the environment.

The alkali slag concrete is prepared from blast furnace slag and the like, and solid waste is reused at first, so that the problem of land occupation caused by slag stacking and landfill is solved. Secondly, the use of cement is indirectly reduced, and the environmental pollution problems such as greenhouse effect and the like are reduced; the prepared gravity type retaining wall is an environment-friendly gravity type retaining wall for regenerating solid waste. Moreover, the alkali slag concrete has the advantages of quick hardening, early strength, high temperature resistance and acid corrosion resistance, and can increase the bearing capacity of the gravity retaining wall and reduce the damage of moisture to the wall body; and the construction speed of the gravity retaining wall is high, and the casting maintenance time is short.

The fixing members 4 are disposed in the wall body of the retaining wall body 2 in the height and width (width, i.e., the direction of the arrow in fig. 2) directions of the retaining wall body 2. As shown in fig. 3, the fixing component 4 is a cuboid steel bar bracket formed by stacking a plurality of small cuboids along the vertical direction and the horizontal direction, the edges of the small cuboids are composed of smooth round steel bars with the diameter of 10-20mm, namely, first steel bars, the drain pipes 3 are fixedly connected with the first steel bars, the drain pipes 3 penetrate through the retaining wall body 2 along the thickness direction of the retaining wall body 2, and meanwhile, the drain pipes 3 are ensured to incline downwards from inside to outside (namely, one end of the drain pipe 3 close to the soil body 1 is higher than one end of the drain pipe 3 far away from the soil body 1) and are used for fixing the drain pipes 3. The drain pipe 3 is inclined downward by 5%.

In some embodiments, the intersection of the drain pipe 3 and the small cuboid is fixed by binding a thinner plain round bar, i.e. a second bar. The arrangement is that the intersection point can provide more favorable support for the drain pipe 3, meanwhile, the second reinforcing steel bars can be freely wound on a plurality of first reinforcing steel bars at the intersection point, so that the fixing fastness of the drain pipe 3 is further improved, the stability of the drain pipe 3 in construction vibration and drainage process is maintained, drainage barriers are avoided, and the foundation of the retaining wall body 2 is prevented from sinking or increasing the side pressure of the retaining wall due to the fact that ground water permeates into the supporting body 6, so that the retaining wall body 2 is unstably collapsed; meanwhile, the cuboid reinforcement bracket can also improve the bearing capacity of the retaining wall body 2, so that the wall body instability damage caused by the fact that moisture is immersed into the retaining wall body 2 is reduced. On this basis, in order to further improve the stability of the drain pipes 3, it is preferable that the drain pipes 3 are each disposed above the laterally disposed first reinforcing bars (laterally, i.e., pointed by arrows in fig. 3) in contact therewith.

The drain pipes 3 are alternately arranged on the retaining wall body 2 in a straight line shape or a quincuncial shape. The drain pipe 3 is a PVC pipe having a diameter of 10-20cm, preferably 15cm.

As shown in fig. 1, a barrier layer 5 is provided between the retaining wall body 2 and the soil body 1 for blocking the soil body 1 from flowing out through the drain pipe 3. The thickness of the barrier layer 5 is 25-45cm, preferably 30cm. The barrier layer 5 is formed of 2-3 layers of sand, crushed stone or pebbles of different particle sizes, each layer being generally orthogonal to the direction of water seepage (i.e. the different layers are vertically stacked), the particle sizes of the different layers of the barrier layer 5 increasing in the direction of water seepage. In this way, the barrier layer 5 can filter water in the soil body 1 at the inner side of the retaining wall body 2, and the filtered water can be discharged through the drain pipe 3, so that the stability of the retaining wall body 2 is ensured. The inclined arrangement of the drain pipe 3 can accelerate the water flow to be discharged by utilizing the gravity effect of the water flow.

In order to ensure the stability of the barrier layer 5, the barrier layer 5 is provided with a clay ramming layer 7 having a thickness of 30-40cm, preferably 35cm, at both the upper and lower ends in the vertical direction. Specifically, the clay ramming layer 7 is positioned on the balance layer 62, and the clay ramming layer 7, balance layer 62 and crushed layer 63 provide support for the barrier layer 5. In some embodiments, a portion of the barrier layer 5 below is also disposed from the ground to the bottom, and serves as a support to further enhance its stability. The upper clay ramming layer 7 is flush with the retaining wall body 2. By this arrangement, the stability of the barrier layer 5 is enhanced, so that it is not prone to sedimentation or run-off.

In summary, according to the gravity type retaining wall provided by the utility model, the fixing assembly for fixing the drain pipe is arranged in the retaining wall body, so that the drain pipe is fixed by the first reinforcing steel bar to form a whole, the defect that water caused by flushing away the drain pipe directly contacts with the wall body to reduce the service life of the wall body is avoided, and the defect that water caused by displacement of the drain pipe cannot be discharged in time to cause unstable collapse of the wall body is avoided; and the cuboid reinforcing bar support is located the retaining wall body, can regard as the braced skeleton of retaining wall body, further improves the intensity of retaining wall body. Meanwhile, the retaining wall body is made of alkali slag concrete, the bearing capacity of the gravity retaining wall can be increased while solid waste is reused, the damage of moisture to the wall body is reduced, and the environment protection and high strength are integrated.

The above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model.

Claims (10)

1. The gravity type retaining wall is arranged outside a soil body and is characterized by comprising a retaining wall body, a drain pipe and a fixing assembly; the drain pipe is arranged on the retaining wall body and is obliquely arranged from inside to outside downwards; the fixing component is a cuboid steel bar bracket formed by stacking a plurality of small cuboids along the vertical direction and the horizontal direction, and the edges of the small cuboids are first steel bars; the drain pipe is fixedly connected with the first steel bar and used for fixing the drain pipe.

2. The gravity retaining wall according to claim 1, wherein the intersection of the drain pipe and the small cuboid is secured by a second reinforcement bar having a smaller diameter than the first reinforcement bar.

3. The gravity type retaining wall according to claim 1, wherein a barrier layer having a thickness of 25-45cm is provided between the retaining wall body and the soil body for blocking the soil body from flowing out through the drain pipe.

4. A gravity retaining wall according to claim 3, wherein a support for stabilizing the retaining wall body is provided below the retaining wall body.

5. The gravity type retaining wall according to claim 1, wherein the drain pipes penetrate the retaining wall body in a thickness direction thereof and are staggered in a straight or quincuncial shape; the drain pipe is a PVC pipe with the diameter of 10-20 cm.

6. A gravity retaining wall according to claim 3 wherein the barrier layer is formed of 2-3 layers of sand, crushed stone or pebbles of different particle sizes, each layer being orthogonal to the direction of water seepage, the particle sizes of the different layers of the barrier layer increasing in the direction of water seepage.

7. The gravity retaining wall according to claim 4, wherein the support body comprises a base layer, a balance layer and a crushed stone layer arranged in sequence from top to bottom.

8. The gravity retaining wall according to claim 7, wherein the base layer is upstanding on a side closer to the soil mass and is inclined on a side farther from the soil mass at a slope of 1:0.2; the thickness of the base layer is 20-40cm.

9. The gravity type retaining wall according to claim 1, wherein the retaining wall body is erected on a side close to the soil mass and is inclined on a side away from the soil mass with an inclination of 1:0.15; the height of the retaining wall body is 3-6m.

10. The gravity type retaining wall according to claim 7, wherein the upper and lower ends of the barrier layer in the vertical direction are provided with clay ramming layers having a thickness of 30-40cm, and the clay ramming layers are located on the balance layer; the clay ramming layer above is flush with the retaining wall body.