Gravity composite retaining wall

Abstract

The utility model relates to gravity type composite structure retaining wall, including body, the body includes wall body, its back surface presents from top to bottom thickness incrementary inclined structure, anti-overturning assembly, the whole presents umbrella -like structure, is connected in the wall back of wall body and is buried under backfill, is used for increasing the resistance when the body overturns, anti-overturning assembly includes extension arm and amplification head, one end of extension arm is connected in the back of wall body, the other end around the rotation center arc of body overturns extension, amplification head is connected perpendicularly in the end of extension arm, the utility model discloses the umbrella -like structure design of anti-overturning assembly, has expanded the contact area with backfill, utilizes the resistance of compacted soil to form additional anti-overturning moment, makes up the deficiency that traditional inclined retaining wall only relies on self -gravity anti-overturning, especially when high fill, soft soil foundation or under external load, the stability is stronger.

Description

Technical Field

[0001] This utility model belongs to the field of retaining wall technology, and specifically relates to gravity composite structure retaining walls. Background Technology

[0002] In civil engineering construction such as roads, railways, and bridges, retaining walls are a commonly used support structure to support roadbed fill or hillside soil, preventing soil collapse and ensuring the safety and stability of the project. Gravity retaining walls are a classic type of retaining structure, their core principle being to resist earth pressure with their own weight. Inclined retaining walls, where the back of the wall slopes towards the fill, have a unique structure that can reduce the wall height and increase the usable area at the top compared to inclined retaining walls. However, inclined retaining walls have a significant problem: they are prone to overturning. This is because the angle between the inclination direction of the inclined retaining wall and the direction of earth pressure results in a larger active earth pressure on the back of the wall, especially when the fill height is high, the soil properties are poor, or when subjected to external loads. Traditional inclined retaining walls mainly rely on their own weight to resist overturning. When the anti-overturning moment generated by the wall's weight is insufficient to balance the overturning moment generated by the earth pressure, the retaining wall will overturn and fail, seriously affecting the safety and stability of the project. Utility Model Content

[0003] This utility model addresses the problems of existing technologies by providing a gravity-type composite retaining wall, the specific technical solution of which is as follows:

[0004] Gravity-type composite retaining walls include:

[0005] The body includes a wall, the back of which has a sloping structure with increasing thickness from top to bottom;

[0006] An anti-overturning component, with an overall umbrella-shaped structure, is connected to the back of the wall and buried under the backfill soil to increase the resistance when the body overturns. The anti-overturning component includes an extension arm and an amplifying head. One end of the extension arm is connected to the back of the wall, and the other end extends in an arc around the rotation center of the overturning body. The amplifying head is vertically connected to the end of the extension arm, and its orientation is perpendicular to the circumferential trajectory centered on the rotation center of the overturning body.

[0007] The steel reinforcement is inserted between the main body and the anti-overturning component to form an integral structure.

[0008] As a further technical solution of this utility model, the body also includes:

[0009] The base is connected to the bottom of the wall and extends outward on both sides to form the wall toe and wall heel;

[0010] Anchor head, connected to the bottom of the base;

[0011] The top cover is connected to the top of the wall and extends outward on both sides to close the top gap.

[0012] As a further technical solution of this utility model, the steel bar group includes:

[0013] Vertical main reinforcement bars are vertically inserted into the top cover, wall, foundation and anchor head;

[0014] Horizontal reinforcing bars are horizontally tied and connected to the vertical main reinforcing bars;

[0015] The arm connecting rib is inserted into the extension arm and tied to the vertical main rib;

[0016] The head ribs are inserted into the enlarged head and tied to the arm body connecting ribs.

[0017] As a further technical solution of this utility model, inclined drainage holes are provided in the wall along the thickness direction, the back end of the drainage holes is higher than the front end of the wall, and multiple sets are staggered in the vertical direction.

[0018] As a further technical solution of this utility model, the main body is a one-piece concrete structure, and the anti-overturning component is integrally cast or pre-embedded with the main body through the steel reinforcement group.

[0019] The beneficial effects of this utility model are as follows:

[0020] (1) In this application, the umbrella-shaped structure design of the anti-overturning component expands the contact area with the backfill soil and uses the resistance of the compacted soil to form an additional anti-overturning moment, which makes up for the shortcomings of the traditional inclined retaining wall that relies solely on its own weight to resist overturning. It is especially more stable in high fill, soft soil foundation or under external load.

[0021] (2) In this application, the steel reinforcement group runs through the main body and the anti-overturning component. The horizontal steel reinforcement, the arm connecting reinforcement and the head reinforcement are tied together to form a rigid whole, ensuring that each component is stressed in a coordinated manner and improving the overall structure and durability. Attached Figure Description

[0022] Figure 1 A schematic diagram of the overall structure of the gravity composite retaining wall is shown.

[0023] Figure 2 A schematic diagram of the drainage hole is shown.

[0024] Legend:

[0025] 100. Body; 110. Wall; 111. Drainage hole; 120. Base; 130. Anchor head; 140. Top cover; 200. Anti-overturning component; 210. Extension arm; 220. Enlarged head; 300. Reinforcing bar assembly; 310. Vertical main reinforcement; 320. Horizontal reinforcement; 330. Arm connecting reinforcement; 340. Head reinforcement. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0027] Figure 1 A schematic diagram of the overall structure of the gravity composite retaining wall is shown. Figure 1 The gravity composite retaining wall includes a main body 100, an anti-overturning component 200, and a steel reinforcement group 300. The anti-overturning component 200 is connected to the back of the main body 100 and buried under the backfill soil. It is used to increase the pressure required for the main body 100 to overturn and reduce the possibility of the main body 100 overturning. The steel reinforcement group 300 is inserted between the main body 100 and the anti-overturning component 200 to form a whole. Since the anti-overturning component 200 is buried under the backfill soil, when the main body 100 has a tendency to overturn, the anti-overturning component 200 is blocked by the compacted backfill soil to pull the main body 100 and prevent the main body 100 from overturning.

[0028] See also Figure 1 The main body 100 includes a wall 110, a base 120, an anchor head 130, and a top cover 140. The back of the wall 110 has an inclined structure with increasing thickness from top to bottom; that is, a tilted structure. The base 120 is connected to the bottom of the wall 110 and extends outward on both sides to form a wall toe and a wall heel, respectively. The extended wall toe and wall heel are buried in the soil, and the soil pressure increases the difficulty of the main body 100 overturning, ensuring the stability of the main body 100. The anchor head 130 is connected to the bottom of the base 120 and can increase the overall burial depth of the main body 100, thereby increasing the anti-sliding ability of the main body 100. The top cover 140 is connected to the top of the wall 110 and extends outward on both sides. The top cover 140 can seal the gaps at the top of the wall to prevent soil, gravel, or weeds from clogging it, and facilitates later maintenance.

[0029] It should be noted that the main body 100 is integrally formed; that is to say, the wall 110, the base 120, the anchor head 130 and the top cover 140 are integrally formed by concrete pouring.

[0030] See also Figure 1The anti-overturning component 200 includes an extension arm 210 and an amplifying head 220. The anti-overturning component 200 has an overall umbrella-shaped structure. One end of the extension arm 210 is connected to the back of the wall 110, and the other end extends in an arc around the rotation center of the overturning body 100. The amplifying head 220 is vertically connected to the extended end of the extension arm 210. Since the anti-overturning component 200 has an overall umbrella-shaped structure, it can increase the contact surface with the soil, that is, expand the pulling force of the anti-overturning component 200 against the overturning of the body 100. Furthermore, the orientation of the amplifying head 220 is perpendicular to the circle centered on the rotation center of the overturning body 100. In other words, when the body 100 overturns, the movement trajectory of the amplifying head 220 is the trajectory of the extension arm 210, that is, the vertical plane of the orientation, thereby maximizing the resistance of the amplifying head 220 to the overturning of the body 100.

[0031] See also Figure 1 The steel reinforcement group 300 includes vertical main bars 310, horizontal bars 320, arm connecting bars 330, and head bars 340. The vertical main bars 310 are vertically arranged and sequentially pass through the top cover 140, wall 110, base 120, and anchor head 130. The horizontal bars 320 are horizontally arranged and tied to the vertical main bars 310. The arm connecting bars 330 pass through the extension arm 210 and are tied to the vertical main bars 310. The head bars 340 pass through the enlarged head 220 and are tied to the arm connecting bars 330. In other words, by setting up the steel reinforcement group 300, the main body 100 and the anti-overturning component 200 can be formed into a whole, increasing the overall integrity.

[0032] Figure 2 A schematic diagram of the structure of the drain hole 111 is shown; Figure 2 In the wall 110, inclined drainage holes 111 are provided along the thickness direction. The back end of the drainage hole 111 is higher than the front end of the wall. Multiple sets of drainage holes 111 are arranged vertically and staggered. The end of the drainage hole 111 facing the soil is the high end of the inclined structure, which can drain the accumulated water and relieve the static load. The staggered arrangement of multiple drainage holes 111 in the vertical direction can ensure that the overall strength of the wall 110 is not affected.

[0033] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A gravity-type composite retaining wall, characterized in that, include: The body (100) includes a wall (110) with a sloped structure on its back side that increases in thickness from top to bottom. An anti-overturning component (200) has an umbrella-shaped structure and is connected to the back of the wall (110) and buried under the backfill soil to increase the resistance when the main body (100) overturns. The anti-overturning component (200) includes an extension arm (210) and an amplifying head (220). One end of the extension arm (210) is connected to the back of the wall (110), and the other end extends in an arc around the rotation center of the overturning of the main body (100). The amplifying head (220) is vertically connected to the end of the extension arm (210) and its orientation is perpendicular to the circumferential trajectory centered on the rotation center of the overturning of the main body (100). The steel reinforcement (300) is inserted between the main body (100) and the anti-overturning component (200) to form an integral structure.

2. The gravity-type composite retaining wall according to claim 1, characterized in that, The body (100) also includes: The base (120) is connected to the bottom of the wall (110) and extends outward on both sides to form a wall toe and a wall heel; An anchor head (130) is attached to the bottom of the base (120); The top cover (140) is connected to the top of the wall (110) and extends outward on both sides to close the top gap.

3. The gravity-type composite retaining wall according to claim 2, characterized in that: The steel reinforcement group (300) includes: Vertical main reinforcement bars (310) are vertically inserted into the top cover (140), wall (110), base (120) and anchor head (130); Horizontal reinforcing bars (320) are horizontally tied to the vertical main reinforcing bars (310); The arm connecting rib (330) is inserted into the extension arm (210) and tied to the vertical main rib (310); The head rib (340) is inserted into the enlarged head (220) and tied to the arm body connecting rib (330).

4. The gravity-type composite retaining wall according to claim 3, characterized in that: The wall (110) has inclined drainage holes (111) along the thickness direction. The back end of the drainage holes (111) is higher than the front end of the wall, and multiple sets are staggered along the vertical direction.

5. The gravity-type composite retaining wall according to claim 3, characterized in that: The main body (100) is a one-piece concrete structure, and the anti-overturning component (200) and the main body (100) are integrally cast or pre-embedded and connected by the steel reinforcement group (300).

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