Anchoring, grouting and spraying composite reinforcing structure of mortar building retaining wall

Abstract

An anchoring, grouting and spraying composite reinforcing structure for a slurry building retaining wall comprises a soil filling area and the retaining wall arranged on the outer surface of the soil filling area, a soil filling reinforcing area connected with the retaining wall is poured in the soil filling area, a reinforcing layer is arranged on the retaining wall, and the soil filling reinforcing area and the reinforcing layer are located on the inner side and the outer side of the retaining wall respectively. A plurality of anchor rods used for improving the strength of the retaining wall are arranged in the retaining wall, the anchor rods are of hollow structures, cement paste is poured in the anchor rods, and the anchor rods penetrate through the retaining wall and extend into the filling reinforcement area; compared with the prior art, by arranging the soil filling reinforcing area between the soil filling area and the retaining wall and arranging the reinforcing layer on the retaining wall, deformation of the retaining wall is restrained, the stress condition of a retaining wall body is improved, the strength of the wall body is improved, meanwhile, the multiple hollow anchor rods are arranged in the retaining wall, and cement paste is poured into the anchor rods; the anchor rods play a reinforcing role in the retaining wall body, the structural strength in the retaining wall is improved, the service life of the retaining wall is prolonged, and then the retaining wall is reinforced and repaired.

Description

TECHNICAL FIELD

[0001] The utility model relates to retaining wall repair reinforcing technical field, concretely relates to a kind of mortar retaining wall anchor grouting spray composite reinforcing structure. BACKGROUND

[0002] Mortar retaining wall is built by piece stone, block stone, rubble, stone and other materials through slurry, and is built by seat slurry method or extrusion slurry method, to support roadbed fill, hillside soil structure, to prevent fill or soil deformation instability.Its advantage lies in simple construction technology, low cost.Mortar retaining wall is mostly built in the late last century, due to its own factors such as insufficient slurry filling and non-dense internal structure of retaining wall during construction, affected by external factors such as masonry weathering, wall back water accumulation and vehicle load, mortar retaining wall is prone to cracking, bulging, overturning and cavity.

[0003] To solve the above problems, the Chinese patent with application number 202411037691.2 discloses a mortar piece retaining wall grouting reinforcing repair method, the disclosed retaining wall grouting reinforcing repair method determines the damage severity and high-risk instability area distribution of the retaining wall by detecting the internal structure of the retaining wall, and then develops a grouting hole position layout scheme;By constructing a frame beam on the outside of the retaining wall, the retaining wall can be reinforced, and the grouting hole positions of the inclined small conduit and inclined steel flower pipe are reserved on the frame beam according to the grouting hole position layout scheme to avoid the need for drilling holes on the frame beam later;The small conduit drilling grouting provides stable conditions through the frame beam, and the small conduit grouting provides stable conditions for the inclined steel flower pipe drilling grouting, and the inclined steel flower pipe grouting forms a stable reinforcing system for the inclined steel flower pipe anchoring frame beam.The Chinese patent with application number 202310330888.4 discloses a complete type counterweight type embankment retaining wall reinforcing structure and reinforcing method, the disclosed reinforcing structure mainly consists of three parts: wall back rock-soil reinforcing structure, wall body reinforcing repair structure and external coating wall structure.

[0004] The above-mentioned prior art achieves reinforcement of the wall by drilling small conduits and steel flower pipes into the wall and grouting in the small conduits and steel flower pipes, which can increase the stability of the wall, but the small conduits and steel flower pipes can only increase the strength of the interior of the wall, and the structural strength of the exterior and surface of the wall cannot be reinforced, which can easily cause cracks, bulging and other problems on the surface of the wall, and can easily lead to the risk of wall falling, thereby reducing the safety of the wall. UTILITY MODEL CONTENTS

[0005] The utility model is to overcome the defects in the above-mentioned prior art, and provides a mortar retaining wall anchor grouting spray composite reinforcing structure which can improve the structural strength of the retaining wall, avoid the retaining wall from falling due to cracks and other problems, and achieve repair and reinforcement of the retaining wall.

[0006] In order to realize the above-mentioned utility model purposes, the utility model adopts the following technical scheme: a mortar wall anchor grouting and spraying composite reinforcing structure, including a filling area and a retaining wall arranged on the outer surface of the filling area, a filling reinforcing area connected with the retaining wall is poured in the filling area, a reinforcing layer is arranged on the retaining wall, and the filling reinforcing area and the reinforcing layer are respectively arranged on the inner and outer sides of the retaining wall; a plurality of anchor rods for increasing the strength of the retaining wall are arranged in the retaining wall, the anchor rod is a hollow structure, cement mortar is poured in the anchor rod, and the anchor rod extends through the retaining wall to the filling reinforcing area.

[0007] As a preferred scheme of the utility model, the reinforcing layer comprises a steel mesh layer arranged on the surface of the retaining wall and a concrete protective layer poured on the steel mesh layer.

[0008] As a preferred scheme of the utility model, the top end of the reinforcing layer is provided with a prism for conveniently observing the retaining wall.

[0009] As a preferred scheme of the utility model, the plurality of anchor rods are arranged in a plum blossom type along the wall surface of the retaining wall.

[0010] As a preferred scheme of the utility model, the length of the anchor rod is greater than the thickness of the retaining wall.

[0011] As a preferred scheme of the utility model, the anchor rod is arranged to be inclined upward from inside to outside, and an anchor head is arranged at the outer end of the anchor rod.

[0012] As a preferred scheme of the utility model, a plurality of water drainage channels are arranged in the retaining wall, and the water drainage channels extend outward through the reinforcing layer.

[0013] As a preferred scheme of the utility model, the plurality of water drainage channels are arranged to be inclined downward.

[0014] As a preferred scheme of the utility model, the end of the water drainage channel is located at the connection position of the retaining wall and the filling reinforcing area.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1. The filling reinforcing area is arranged between the filling area and the retaining wall, the reinforcing layer is arranged on the retaining wall, the deformation of the retaining wall is constrained, the stress condition of the retaining wall body is improved, the strength of the wall body is improved, a plurality of hollow anchor rods are arranged in the retaining wall, the cement mortar is poured in the anchor rod, the anchor rod plays a reinforcing role in the wall body of the retaining wall, the structural strength of the interior of the retaining wall is increased, the service life of the retaining wall is improved, and the reinforcing and repairing of the retaining wall are realized.

[0017] 2. Furthermore, by including a concrete protective layer and a steel mesh layer in the reinforcement layer, and with the steel mesh layer placed within the concrete protective layer, the structural strength of the entire reinforcement layer is improved, thereby increasing the reinforcement effect of the retaining wall. In addition, a prism is installed at the top of the reinforcement layer for the inspection of the retaining wall, ensuring the monitoring of the retaining wall's condition. Attached Figure Description

[0018] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0019] Fig. 2 This is a cross-sectional view of the present invention.

[0020] Attached reference numerals: 1. Retaining wall; 2. Reinforcement layer; 201. Concrete protective layer; 202. Steel mesh layer; 3. Drainage channel; 4. Anchor bolt; 401. Anchor head; 402. Cement grout; 5. Prism; 6. Fill reinforcement area; 7. Fill area; 8. Ground line. Detailed Implementation

[0021] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] like Figs. 1-2 As shown, a composite reinforcement structure for a masonry retaining wall with anchoring, grouting, and spraying includes a backfill area 7 and a retaining wall 1 disposed on the outer surface of the backfill area 7. The backfill area 7 contains a backfill reinforcement area 6 connected to the retaining wall 1. The retaining wall 1 has a reinforcement layer 2. The backfill reinforcement area 6 and the reinforcement layer 2 are located on the inner and outer sides of the retaining wall 1, respectively. The retaining wall 1 contains several anchor rods 4 for increasing its strength. The anchor rods 4 are hollow structures, filled with cement grout 402, and extend through the retaining wall 1 into the backfill reinforcement area 6.

[0023] Furthermore, a soil-filled reinforcement zone 6 is provided between the retaining wall 1 and the soil-filled area 7, and a reinforcement layer 2 is provided on the retaining wall 1. Under the action of the reinforcement layer 2 and the soil-filled reinforcement zone 6, the deformation of the retaining wall 1 is constrained, the degree of deformation of the retaining wall 1 is reduced, the stress conditions of the wall are improved, and thus the strength of the wall is increased.

[0024] Specifically, the loose soil on the surface of the fill area 7 is grouted to form a stone body with a certain strength, which forms the fill reinforcement area 6.

[0025] In addition, a number of anchor rods 4 are installed in the retaining wall 1. The anchor rods 4 are installed along the thickness direction of the retaining wall 1, and all of the anchor rods 4 are hollow structures. Cement grout 402 is poured into the hollow structure. At the same time, the anchor rods 4 penetrate into the retaining wall 1 and extend into the backfill reinforcement area 6. Therefore, the cement grout 402 in the anchor rods 4 also extends into the backfill reinforcement area 6. After the cement grout 402 solidifies, it is tightly connected with the concrete of the backfill reinforcement area 6 to form an integrated structure.

[0026] The reinforcing layer 2 comprises a reinforcing mesh layer 202 arranged on the surface of the retaining wall 1 and a concrete protective layer 201 poured on the reinforcing mesh layer 202. Further, the concrete protective layer 201 is poured on the surface of the retaining wall 1. Before pouring the concrete protective layer 201, the reinforcing mesh layer 202 is laid on the surface of the retaining wall 1, and then the concrete is poured on the reinforcing mesh layer 202. After the poured concrete solidifies, the concrete protective layer 201 is formed. In addition, the top end of the solidified concrete protective layer 201 is flush with the top of the retaining wall 1, and the bottom end of the concrete protective layer 201 extends to the ground line 8. The concrete protective layer 201 achieves the reinforcing treatment of the surface of the retaining wall 1, and the retaining wall 1 is constrained under the action of the concrete protective layer 201 and the soil reinforcing area 6, thereby reducing the deformation degree of the retaining wall 1, improving the structural quality of the retaining wall 1, and increasing the service life of the retaining wall 1. In addition, the reinforcing mesh layer 202 arranged in the concrete protective layer 201 strengthens the structural strength of the concrete protective layer 201, thereby improving the reinforcing effect of the concrete protective layer 201 on the surface of the retaining wall 1.

[0027] The top end of the reinforcing layer 2 is provided with a prism 5 for facilitating observation of the retaining wall 1. Further, the prism 5 is arranged at the top end of the concrete protective layer 201. The observation of the retaining wall 1 is achieved through cooperation of the prism 5 and the total station, thereby ensuring real-time monitoring of the state of the retaining wall 1 and improving the quality monitoring of the reinforced retaining wall 1.

[0028] The plurality of anchor rods 4 are arranged in a quincunx pattern along the surface of the retaining wall 1. Further, the plurality of anchor rods 4 are arranged in a quincunx pattern on the surface of the retaining wall 1. Specifically, the installation of the anchor rod 4 needs to be inserted after the concrete protective layer 201 is poured and solidified. Therefore, the anchor rod hole for inserting the anchor rod 4 needs to be left when pouring the concrete protective layer 201. The plurality of anchor rods 4 are arranged along the thickness direction of the retaining wall 1, and the plurality of anchor rods 4 pass through the concrete protective layer 201 and enter the retaining wall 1, and the end of the anchor rod 4 is flush with the end face of the concrete protective layer 201.

[0029] In addition, the length of the anchor rod 4 is greater than the thickness of the retaining wall 1. Further, the length of the anchor rod 4 is greater than the thickness of the retaining wall 1 plus the thickness of the concrete protective layer 201. When the anchor rod 4 is inserted into the retaining wall 1, the end of the anchor rod 4 needs to be deep into the soil protection area 6. Therefore, the anchor rod 4 is a hollow self-advancing anchor rod.

[0030] Specifically, the self-advancing anchor rod is an anchoring technology based on the properties of concrete. Its main principle is to gradually enter each self-advancing cylinder in the anchor cylinder while drilling a hole in the wall, forming a certain length of reinforcing steel in the pre-buried sleeve; when the concrete hardens, the reinforcing steel and the concrete form an integrated structure, thereby achieving a firm support effect. The self-advancing anchor rod is mainly composed of reinforcing steel, self-advancing cylinders, wear-resistant plugs, etc. Among them, the reinforcing steel is the main part that bears the supporting role, and the self-advancing cylinder and the wear-resistant plug are auxiliary components that play a fixing and protecting role. In addition, there are also views that the structure of the self-advancing anchor rod includes a hollow steel pipe, an anchoring terminal, and a spiral drill bit. During the drilling process, the drill pipe and the drill bit rotate simultaneously, and the drill pipe can be internally equipped with a grouting pipe. The self-advancing anchor rod integrates drilling, grouting, anchoring, and other functions into one, simplifying the construction steps; the self-advancing anchor rod can provide reliable anchoring effect in complex strata such as broken rock strata, loose soil layers, and strata that require casing wall drilling; at the same time, the self-advancing anchor rod is easy to operate, can reduce the labor intensity of workers, improve work efficiency, and has the advantages of stable support, safety, and reliability, etc., can effectively prevent accidents such as stratum collapse and fault slip, therefore, the self-advancing anchor rod is adopted in the embodiment.

[0031] In addition, the anchor rod 4 is inclined upward from inside to outside, and the outer end of the anchor rod 4 is provided with an anchor head 401. Further, the anchor rod 4 is in an inclined state when it is inserted into the retaining wall 1. Specifically, the anchor rod 4 is inclined downward along the thickness direction of the retaining wall 1, that is, the height of one end of the anchor rod 4 in the concrete protective layer 201 is higher than the height of the tail end of the anchor rod 4 in the retaining wall 1. When the cement slurry 402 is poured into the hollow structure of the anchor rod 4, the anchor rod 4 is inclined, so that the cement slurry 402 flows to the tail end of the anchor rod 4 under the action of gravity, thereby facilitating the filling of the anchor rod 4 with the cement slurry 402, improving the pouring efficiency of the cement slurry 402, and avoiding the blockage of the cement slurry 402, thereby ensuring the pouring effect of the cement slurry 402.

[0032] The retaining wall 1 is provided with a plurality of drainage channels 3, and the drainage channels 3 extend outward through the reinforced layer 2. Further, the plurality of drainage channels 3 are uniformly distributed in the retaining wall 1, and the plurality of drainage channels 3 are arranged along the thickness direction of the retaining wall 1. At the same time, drainage holes that communicate with the drainage channels 3 in the retaining wall 1 are left during the pouring of the concrete protective layer 201 of the reinforced layer 2, so that the drainage channels 3 can extend to the outside of the reinforced layer 2 through the reinforced layer 2, and the accumulated water in the retaining wall 1 can be smoothly drained.

[0033] The plurality of drainage channels 3 are inclined downward. Further, the drainage channels 3 are inclined downward, so that the accumulated water can be discharged to the outside under the action of gravity, improving the efficiency of water discharge and ensuring that the accumulated water in the retaining wall 1 will not be stored.

[0034] The end of the water drainage channel 3 is located at the joint of the retaining wall 1 and the filling reinforced area 6, further, by arranging the end of the water drainage channel 3 at the joint of the retaining wall 1 and the filling reinforced area 6, it is ensured that the accumulated water in the whole retaining wall 1 can be drained through the water drainage channel 3, the accumulated water is prevented from remaining in the retaining wall 1, and the water drainage effect of the retaining wall 1 is improved.

[0035] A construction method of a slurry-masonry retaining wall anchor grouting and spraying composite reinforcing structure, comprising the following steps:

[0036] S1: detecting the internal technical condition of the retaining wall 1, cleaning the wall vegetation, floating soil, loose stones and the like, so as to ensure the cleanliness of the wall surface of the retaining wall 1, and then facilitating the subsequent pouring of the concrete protection layer 201;

[0037] S2: lofting to determine anchor rod hole positions, and the anchor rod hole positions are distributed on the wall surface of the retaining wall 1 in a plum blossom type structure;

[0038] S3: dredging the water drainage channel 3 of the retaining wall 1, and using a PVC pipe to lengthen;

[0039] S4: laying the steel mesh layer 202, fixing the steel mesh layer 202 on the wall surface of the retaining wall 1, and ensuring that the steel mesh layer 202 will not move during the subsequent pouring of concrete;

[0040] S5: reserving the anchor rod 4 hole position, and then pouring the concrete protection layer 201 on the wall surface of the retaining wall 1;

[0041] S6: laying the anchor rod 4, and the length of the anchor rod 4 is greater than the thickness of the retaining wall 1, the anchor rod 4 penetrates through the concrete protection layer 201 and the retaining wall 1 and further penetrates into the filling protection area 6;

[0042] S7: injecting cement slurry 402 from the end of the anchor rod 4, anchoring and sealing the anchor.

[0043] The above description of disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application; therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0044] Although the terms: retaining wall 1, reinforcing layer 2, concrete protective layer 201, steel mesh layer 202, drainage channel 3, anchor rod 4, anchor head 401, cement slurry 402, prism 5, soil reinforcement area 6, soil area 7, ground line 8, etc. are used more in the drawings, the possibility of using other terms is not excluded. The use of these terms is only to facilitate the description and explanation of the essence of the utility model; any additional limitation by interpreting them is contrary to the spirit of the utility model.

Claims

1. A compound reinforced structure of a slurry retaining wall anchor grouting and jetting, comprising a filled earth area (7) and a retaining wall (1) arranged on the outer surface of the filled earth area (7), characterized in that, The filling area (7) is poured with a filling reinforced area (6) connected with the retaining wall (1), the retaining wall (1) is provided with a reinforced layer (2), the filling reinforced area (6) and the reinforced layer (2) are respectively located at the inner and outer sides of the retaining wall (1); the retaining wall (1) is provided with a plurality of anchor rods (4) for increasing the strength of the retaining wall (1), the anchor rod (4) is a hollow structure, the anchor rod (4) is poured with cement slurry (402), and the anchor rod (4) extends through the retaining wall (1) to the filling reinforced area (6).

2. The compound reinforced structure of the slurry retaining wall, anchor, grouting and jetting according to claim 1, characterized in that, The reinforced layer (2) comprises a steel mesh layer (202) arranged on the surface of the retaining wall (1) and a concrete protective layer (201) poured on the steel mesh layer (202).

3. The composite reinforced structure of claim 2, wherein, The top end of the reinforced layer (2) is provided with a prism (5) for facilitating observation of the retaining wall (1).

4. The compound reinforced structure of claim 1, wherein, The plurality of anchor rods (4) are arranged in a quincunx type along the wall surface of the retaining wall (1).

5. The gravity retaining wall anchor grouting and spraying composite reinforcement structure according to claim 1, characterized in that, The length of the anchor rod (4) is greater than the thickness of the retaining wall (1).

6. The gravity retaining wall anchor and grouting and jetting composite reinforcement structure according to claim 1, characterized in that, The anchor rod (4) is arranged to be inclined upward from inside to outside, and the outer end of the anchor rod (4) is provided with an anchor head (401).

7. The gravity retaining wall anchor and grouting and jetting composite reinforcing structure according to claim 1, characterized in that, The retaining wall (1) is provided with a plurality of drainage channels (3), and the drainage channels (3) extend outward through the reinforced layer (2).

8. The gravity retaining wall anchor grouting and spraying composite reinforcement structure according to claim 7, characterized in that, The plurality of drainage channels (3) are arranged to be inclined downward.

9. The composite reinforced structure of claim 7, wherein, The end of the drainage channel (3) is located at the connection between the retaining wall (1) and the filling reinforced area (6).

Images