Temporary slope retaining wall structure with self-propelled anchor rod anti-sliding structure

Abstract

The utility model relates to a temporary slope retaining wall structure with a self-propelled anchor rod anti-sliding structure, which comprises a plurality of self-propelled anchor rods, a plurality of tubular supports and a flexible mesh, the number of the self-propelled anchor rods corresponds to that of the tubular supports, each self-propelled anchor rod is independently sleeved with one tubular support, and the flexible mesh is arranged between the tubular supports and the self-propelled anchor rods. The tubular supports are connected and fixed through flexible meshes to form an integral structure; the self-propelled anchor rod is of a hollow structure, an anchor rod grouting opening is formed in the top end of the self-propelled anchor rod, and a grouting hole is formed in a rod body of the self-propelled anchor rod. The temporary side slope retaining wall has the advantages that rapid construction of the temporary side slope retaining wall is achieved, and the temporary side slope retaining wall has extremely high anti-sliding capacity; the tubular support rigidity is increased by utilizing the steel tube concrete principle, and frame deformation caused by retaining wall unit soil filling is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation treatment engineering, in particular to a temporary slope retaining wall structure with a self-advancing anchor rod anti-slip structure. Background Art

[0002] my country has a vast territory, with many cities and populations distributed along the coast, along rivers, and along rivers. These areas are widely distributed with soft clay strata deposited in marine, lacustrine and river phases. Soft clay strata have the characteristics of poor permeability, high compressibility, low strength, high water content, and are generally buried at a shallow depth. When the thickness of the stratum is large, the structures on it are prone to large settlement and differential settlement, and the duration of settlement is often long, which significantly affects the durability of the building and reduces the normal service life of the building.

[0003] Modern buildings have the need to increase in size and design service life, but the strength, foundation bearing capacity and stability of clay soil often cannot meet the needs of new buildings. Therefore, it is necessary to treat the foundation, and drainage consolidation method is a commonly used soft clay foundation treatment measure. The principle is to set up drainage structures such as sand wells and drainage belts in the foundation, load preload above the foundation soil, so that the water in the foundation soil is discharged, the soil layer gradually settles and consolidates, and the strength of the soil layer is increased. Not only can the foundation settlement be basically completed during the ballasting stage, meeting the settlement and differential settlement limits of the building during the use stage, but also the bearing capacity and stability of the soil layer can meet the requirements of the building.

[0004] At present, loose materials such as stones and soil are mostly used for loading on the foundation. Such loose materials are naturally piled on the foundation to be treated. It is convenient to construct and economical, but it is prone to collapse accidents, which may cause property losses and casualties in serious cases. Therefore, when loose materials are used, temporary slope supports need to be set at their side positions to support the loose materials and prevent them from falling because they are too loose and lack self-stability.

[0005] However, traditional temporary slope supports often use reinforced concrete structures. Although they can ensure the safety of the support, they have high masonry costs, low mechanization levels, and long construction periods. They not only take up the compact foundation treatment time but are also highly dangerous. If a dangerous situation occurs, it will delay the construction period. At the same time, the use of reinforced concrete structures is not environmentally friendly, highly polluting, and energy-intensive. After use, they are difficult to dismantle and cannot be reused. The large amount of construction waste generated can only be directly discarded or further processed, which is not conducive to energy conservation and emission reduction. In addition, after the construction of traditional temporary slopes is completed, the plan is difficult to modify and has poor flexibility. Summary of the invention

[0006] The purpose of the utility model is to provide a temporary slope retaining wall structure with a self-propelled anchor rod anti-slip structure based on the above-mentioned deficiencies of the prior art. Through the design of the self-propelled anchor rod, the rapid construction of the temporary slope retaining wall unit is achieved and the anti-slip performance of the slope retaining wall unit is improved at the same time.

[0007] The purpose of this utility model is achieved by the following technical solutions:

[0008] A temporary slope retaining wall structure with a self-advanced anchor rod anti-slip structure, characterized in that it includes a plurality of self-advanced anchor rods, a plurality of tubular supports and a flexible mesh, wherein the number of the self-advanced anchor rods corresponds to the number of the tubular supports, each of the self-advanced anchor rods is individually sleeved with a tubular support, and the tubular supports are connected and fixed by a flexible mesh to form an integral structure; the self-advanced anchor rod is a hollow structure, a grouting port is arranged at the top end thereof, and a grouting hole is opened on the rod body.

[0009] The self-advancing anchor rod can be extended by a connecting sleeve.

[0010] The self-advancing anchor rod is extended by providing an external thread on the rod body of the self-advancing anchor rod and providing an internal thread on the inner wall of the connecting sleeve, and the self-advancing anchor rod is extended by the cooperation of the internal and external threads.

[0011] A centralizer is provided between the inner wall of the tubular support and the outer wall of the self-propelled anchor rod, and the self-propelled anchor rod is positioned in the tubular support through the centralizer.

[0012] The self-advancing anchor rod and the tubular support are connected and fixed via a rigid connection structure to form an integral structure.

[0013] An anchor drill bit is arranged at the bottom end of the self-advancing anchor.

[0014] The top and bottom of the tubular support are provided with thickened sections.

[0015] The advantages of the utility model are:

[0016] 1) Realize the rapid construction of temporary slope retaining walls and make them have strong anti-slip ability.

[0017] 2) The soil anchor rod is threaded throughout and can be extended by a connecting sleeve at any position, or cut off at any position, so that the length of the soil anchor rod can be adjusted according to the actual project conditions.

[0018] 3) A centerer is provided between the inner wall of the tubular support and the anchor rod body to ensure the stability of the drilling direction of the self-advanced anchor rod.

[0019] 4) There are structural thickened sections at the top and bottom of the tubular support to enhance rigidity.

[0020] 5) Self-propelled anchor rods can be equipped with drill bits according to different geological conditions to improve drilling efficiency.

[0021] 6) The rod body of the self-advancing anchor is hollow and can be used as a grouting channel.

[0022] 7) After the anchor drilling is completed, the internal gap between the anchor and the tubular support is filled with anchor slurry, which is used as a force transmission structure after hardening. The steel tube concrete principle is used to increase the stiffness of the tubular support and reduce the frame deformation caused by the retaining wall unit filling.

[0023] 8) Use tubular supports as a measure to stabilize the drilling direction of the anchor rod to ensure that the direction deviation of the anchor rod is not too large.

[0024] 9) The temporary retaining wall unit is fixed to the ground with double rows of anchor rods, which not only resists sliding but also prevents the retaining wall from overturning. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 It is a structural schematic diagram of the self-advancing anchor rod in the utility model;

[0027] Figure 3 It is a schematic diagram of the arrangement structure of the utility model. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the features of the present invention and other related features through embodiments in conjunction with the accompanying drawings to facilitate understanding by technicians in the same industry:

[0029] like Figure 1-3 As shown in the figure, marks 1-12 and A respectively represent: temporary retaining wall unit 1, self-propelled anchor 2, tubular support 3, flexible mesh 4, anchor drill bit 5, anchor grouting port 6, grouting hole 7, connecting sleeve 8, centering device 9, rigid connection structure 10, fill 11, loading soil 12, anchor grouting range A.

[0030] Example: Figure 1 and Figure 2 As shown, the temporary slope retaining wall structure with a self-propelled anchor rod anti-slip structure in this embodiment is used in the foundation treatment of the drainage consolidation method. During the foundation treatment of the drainage consolidation method, the piled soil 12 as a pile carrier is piled on the top of the foundation to be treated to form a pile load. The temporary slope retaining wall unit 1 in this embodiment is set at the boundary position of the foundation to be treated to support the piled soil 12.

[0031] Specifically, combined Figure 1 and Figure 2As shown, the temporary slope retaining wall unit 1 in this embodiment includes a plurality of self-propelled anchor rods 2 and a plurality of tubular supports 3 matching the number thereof, and a tubular support 3 is sleeved on the periphery of each self-propelled anchor rod 2. A flexible mesh 4 is provided between each tubular support 3 to connect the plurality of self-propelled anchor rods 2 into a whole, and further a filling space of fill 11 is formed under the enclosure of the flexible mesh 4.

[0032] In this embodiment, the self-propelled anchor rod 2 is inserted into the stratum of the foundation to be treated to bear the horizontal sliding of the temporary retaining wall unit, the pulling and compressing effects inside and outside the retaining wall, maintain the stability of the retaining wall, and prevent the retaining wall unit from being greatly deformed when placed straight on the ground.

[0033] A grouting structure is provided on the self-advancing anchor rod 2, and the grouting structure includes an anchor rod grouting port 6 provided at the top of the self-advancing anchor rod 2, through which a grouting liquid for reinforcement can be injected into the hollow self-advancing anchor rod 2. Grouting holes 7 are evenly provided on the rod body of the self-advancing anchor rod 2, and the injected grouting liquid can flow outward from each grouting hole 7. The grouting in this embodiment includes two parts. One is the grouting of the self-propelled anchor rod 2 in the stratum to be treated. Through the grouting, an anchor rod grouting range A that acts as an enlarged head is formed at the periphery of the bottom end of the self-propelled anchor rod 2, thereby improving the anti-displacement performance of the self-propelled anchor rod 2; the second is the grouting between the self-propelled anchor rod 2 and the tubular support 3. Through grouting, the self-propelled anchor rod 2 and the tubular support 3 are densely filled, and after the slurry hardens, it serves as a force transmission structure to increase the stiffness of the tubular support 3 and the overall stiffness of the temporary retaining wall unit 1, thereby reducing the frame deformation of the temporary retaining wall unit 1 caused by the backfill 11.

[0034] In this embodiment, if Figure 1 and Figure 2 As shown, in order to further improve the integrity between the tubular support 3 and the self-propelled anchor rod 2, rigid connection structures 10 are respectively provided at the positions where the top and bottom ends of the self-propelled anchor rod 2 extend out of the tubular support 3. The self-propelled anchor rod 2 and the tubular support 3 are connected into an integral structure through the rigid connection structure 10 to further improve the structural performance.

[0035] like Figure 2 As shown, a centering device 9 is provided between the tubular support 3 and the self-propelled anchor 2. A plurality of the centering devices 9 can be arranged on the inner wall of the tubular support 3 along the length direction of the self-propelled anchor 2. The function of the centering device 9 is to use the tubular support 3 as a measure to stabilize the drilling direction of the self-propelled anchor 2, reduce the directional deviation of the self-propelled anchor 2, ensure its uprightness, and further ensure the uprightness of the temporary retaining wall unit 1.

[0036] like Figure 2As shown, the self-advancing anchor rod 2 can be extended by the connecting sleeve 8, specifically: an external thread is arranged on the periphery of the self-advancing anchor rod 2, and an internal thread matching the external thread is arranged on the inner wall of the connecting sleeve 8, and two sections of the self-advancing anchor rod 2 are connected and fixed to form an integral structure by the matching connection of the internal and external threads to complete the extension, so as to meet the insertion depth requirement. But at the same time, the self-advancing anchor rod 2 can also be cut off at any position.

[0037] In this embodiment, in order to facilitate drilling, a matching anchor drill bit 5 is disposed at the bottom end of the self-propelled anchor 2 to improve the drilling efficiency.

[0038] When applied, this embodiment mainly includes the following construction methods:

[0039] 1) Temporarily unfold the retaining wall units 1, connect them to each other and place them on the ground according to the designed position of the retaining wall, and insert the bottom of the tubular support 3 beyond the lower edge of the flexible mesh 12 into the stratum. The temporary retaining wall frame is completed.

[0040] (2) The self-propelled anchor rod 2 is placed inside the tubular support 3 and driven downward into the formation. When the self-propelled anchor rod 2 is not long enough, the connecting sleeve 8 is used to lengthen the anchor rod at the top of the tubular support 3 until the self-propelled anchor rod 2 reaches the designed position.

[0041] (3) Connect the top anchor grouting port 6 of the self-propelled anchor 2 to the grouting equipment to complete the anchor grouting. The slurry is injected into the formation along the anchor grouting port 6 on the anchor. The gap between the tubular support 3 and the self-propelled anchor 2 is filled tightly with the slurry. The next step can be carried out only after the slurry solidifies and the grouting body reaches a certain strength.

[0042] (4) Fill soil 11 in the frame of the temporary retaining wall unit 1 and compact it to form the slope retaining wall.

[0043] (5) Fill the temporary slope retaining wall with soil 12 to preload the foundation to be treated.

[0044] (6) When dismantling the temporary slope retaining wall, you can choose to cut off part of the self-propelled anchor rod 2 at the bottom of the tubular support 3, or disconnect the connecting sleeve 8, then you can remove the tubular support 3 and the self-propelled anchor rod, and the flexible mesh 4 can also be pulled out, and finally clean the backfill.

[0045] In the specific implementation of this embodiment: Figure 3 As shown, the temporary retaining wall unit 1 is fixed to the stratum with a double row of self-advanced anchor rods 2, which not only resists sliding but also prevents the retaining wall from overturning; but on the premise of meeting the support requirements, two self-advanced anchor rods 2 and matching tubular supports 3 can be directly set, and then a flexible mesh 4 is set between the tubular supports 3 to form a sheet-type support, that is, the piled soil 12 is supported by the flexible mesh 4 itself.

[0046] There are structural thickening sections at the top and bottom of the tubular support 3 to enhance the rigidity.

[0047] like Figure 3 As shown, in order to correspond to the height of the backlog soil 12, temporary retaining wall units 1 can be stacked in the height direction. Specifically, the positions of the tubular supports 3 of the upper and lower adjacent temporary retaining wall units 1 are set to match and correspond, and self-propelled anchor rods 2 with a length that meets the stacking requirements are inserted into the stratum or the self-propelled anchor rods 2 are spliced ​​by extending them with connecting sleeves 8.

[0048] When Figure 1 As shown, when two front and rear rows of temporary retaining wall units 1 are arranged on one side of the backfill soil 12, the front and rear rows of temporary retaining wall units 1 can be relatively independent, or can be further connected by sharing tubular supports 3 to improve integrity.

[0049] Although the above embodiments have described the concepts and embodiments of the purpose of the utility model in detail with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the utility model without departing from the scope of the claims, so they are not described one by one here.

Claims

1. A temporary slope retaining wall structure with a self-propelled anchor rod anti-slip structure, characterized in that: It includes a plurality of self-advancing anchor rods, a plurality of tubular supports and a flexible mesh, wherein the number of the self-advancing anchor rods corresponds to the number of the tubular supports, each of the self-advancing anchor rods is individually sleeved with a tubular support, and the tubular supports are connected and fixed by a flexible mesh to form an integral structure; the self-advancing anchor rod is a hollow structure, a grouting port is arranged at the top end thereof, and a grouting hole is opened on the rod body.

2. A temporary slope retaining wall structure with a self-propelled anchor rod anti-slip structure according to claim 1, characterized in that: The self-advancing anchor rod can be extended by a connecting sleeve.

3. A temporary slope retaining wall structure with a self-propelled anchor rod anti-slip structure according to claim 2, characterized in that: The self-advancing anchor rod is extended by providing an external thread on the rod body of the self-advancing anchor rod and providing an internal thread on the inner wall of the connecting sleeve, and the self-advancing anchor rod is extended by the cooperation of the internal and external threads.

4. The temporary slope retaining wall structure with a self-propelled anchor rod anti-slip structure according to claim 1, characterized in that: A centralizer is provided between the inner wall of the tubular support and the outer wall of the self-propelled anchor rod, and the self-propelled anchor rod is positioned in the tubular support through the centralizer.

5. The temporary slope retaining wall structure with a self-propelled anchor rod anti-slip structure according to claim 1, characterized in that: The self-advancing anchor rod and the tubular support are connected and fixed via a rigid connection structure to form an integral structure.

6. The temporary slope retaining wall structure with a self-propelled anchor rod anti-slip structure according to claim 1, characterized in that: An anchor drill bit is arranged at the bottom end of the self-advancing anchor.

7. The temporary slope retaining wall structure with a self-propelled anchor rod anti-slip structure according to claim 1, characterized in that: The top and bottom of the tubular support are provided with thickened sections.

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