Retaining wall graded gravel filter layer construction method

Abstract

The application discloses a retaining wall graded gravel filter layer construction method, and relates to the technical field of retaining wall construction, which comprises a formwork arranged at a graded gravel filter layer of a retaining wall, and adopts the following steps: moving the formwork to the filter layer of the retaining wall, and making the formwork inclined and parallel to the retaining wall according to the inclination angle of the retaining wall; arranging a steel pipe at the back side of the formwork to support the formwork; adding 500mm high graded gravel into the formwork by using a forklift or an excavator, removing the steel pipe for supporting while paving backfill soil on the outside of the formwork; drawing out the formwork after filling on both sides, and compacting the backfill soil, wherein the formwork side is compacted by using a manual rammer; using the formwork to construct the upper graded gravel and backfill soil; and through the formwork, the construction quality of the back filter layer is ensured, material waste is reduced, and the backfill is strictly constructed in layers according to the design in the process, so that the backfill quality is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the retaining wall construction technical field, specifically to a retaining wall graded gravel filter construction method. BACKGROUND

[0002] The retaining wall is a structure for supporting the roadbed fill or the hillside soil and preventing the deformation and instability of the fill or the soil, and before the backfill of the retaining wall, a 50cm-thick graded gravel filter is generally filled to facilitate the drainage of the water accumulated in the wall back to the outside of the water hole. Since the filter is thin, the filter is formed by using a shovel car or an excavator to stack the wall back during the backfill of the wall, resulting in the uneven thickness of the filter, the excessive thickness of some parts and the too thin thickness of some parts, and the material waste is caused.

[0003] Therefore, in order to ensure that the graded gravel filter of the retaining wall back is implemented according to the design requirements, a retaining wall graded gravel filter construction method is provided. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a retaining wall graded gravel filter construction method, which sets a steel formwork at a distance of 50cm from the wall back in combination with the layered compaction requirement of the wall backfill to ensure the thickness of the graded gravel filling, to ensure the construction quality and to reduce the material waste.

[0005] The retaining wall graded gravel filter construction method provided by the present application adopts the following technical scheme:

[0006] A retaining wall graded gravel filter construction method comprises a formwork arranged at the graded gravel filter of the retaining wall, and the following steps are adopted:

[0007] S1, moving the formwork to the filter of the retaining wall and inclining the formwork to be parallel to the retaining wall according to the inclination angle of the retaining wall;

[0008] S2, supporting the formwork by arranging a steel pipe at the back side of the formwork;

[0009] S3, adding 500mm-high graded gravel into the formwork by using a shovel car or an excavator, and removing the steel pipe for supporting while the wall backfill soil is paved outside the formwork;

[0010] S4, pulling out the formwork after the filling on both sides, and compacting the backfill soil by using a hand-held rammer;

[0011] S5, using the formwork to construct the graded gravel and the backfill soil of the upper layer.

[0012] Further, the formwork is spliced by a plurality of steel plates.

[0013] Further, the joint of the template is provided with a connecting rib plate, and the connecting rib plate is provided with quick-release buckles for connecting the template.

[0014] Further, the connecting rib plate is arranged in a right-angled triangle, and the right-angled side of the connecting rib plate is arranged on the top of the template and has the same width as the thickness of the filter layer.

[0015] Further, the top of the template is provided with a plurality of lifting holes for extracting the template.

[0016] Further, the back side of the template is provided with a supporting rib in the horizontal direction, and the steel pipe is supported on the supporting rib to support the template.

[0017] Further, the supporting rib is uniformly provided with a plurality of notches in the length direction of the supporting rib, and the steel pipe is inserted into the notches one by one to support the template.

[0018] In summary, the present application has at least one of the following beneficial effects: by arranging the template, the construction quality of the wall back filter layer is ensured, the material waste is reduced, and the wall back backfill is strictly constructed in layers according to the design during the process, and the backfill quality is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The use of the template of the embodiment of the present application is shown in the figure;

[0020] Figure 2 The structure of the template of the embodiment of the present application is shown in the figure Figure One ;

[0021] Figure 3 The structure of the template of the embodiment of the present application is shown in the figure Figure Two ;

[0022] Figure 4 The structure of the quick-release buckle of the embodiment of the present application is shown in the figure.

[0023] Explanation of reference signs:

[0024] 1, template; 11, connecting rib plate; 12, quick-release buckle; 13, lifting hole; 14, supporting rib; 2, steel pipe. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be described below through specific concrete examples, and those skilled in the art can easily understand other advantages and effects of the present application from the disclosure of the present specification. The present application can also be implemented or applied through other different specific embodiments, and various modifications or changes can be made to the details in the specification based on different viewpoints and applications without departing from the spirit of the present application.

[0026] The following will be described in conjunction with the Figures 1-4Further details of the present application are provided below.

[0027] The application discloses a retaining wall graded gravel filter construction method. Figures 1-4 The retaining wall graded gravel filter construction method comprises a formwork 1 arranged at the graded gravel filter of the retaining wall, and the following steps are adopted.

[0028] In step one, the formwork 1 is moved to the filter of the retaining wall, and is inclined to be parallel to the retaining wall according to the inclination angle of the retaining wall; in order to make the formwork 1 more convenient to use, the formwork 1 is spliced by a plurality of steel plates, and the steel plates can be spliced into a formwork 1 with a proper size according to the construction site.

[0029] In order to make the formwork 1 more convenient to disassemble, a connecting rib plate 11 is arranged at the splicing position of the formwork 1, the connecting rib plate 11 is provided with quick-release buckles 12 for connecting the formwork 1, and the connecting rib plate 11 is arranged in the shape of a right-angled triangle, the right-angled side of the connecting rib plate 11 is arranged at the top of the formwork 1 and has the same width as the thickness of the filter, and the tip of the connecting rib plate 11 is abutted against the retaining wall, so that the position of the formwork 1 is more accurate during installation, and the formwork 1 can be positioned during installation.

[0030] In step two, steel pipes 2 are arranged at the back side of the formwork 1 to support the formwork 1; when the formwork 1 is placed at the filter of the retaining wall, the steel pipes 2 are arranged at the back side of the formwork 1 to support the formwork 1, the number of the steel pipes 2 is determined according to the size of the formwork 1, the steel pipes 2 are uniformly arranged at the back side of the formwork 1, the supporting force is more uniform, the formwork 1 can be prevented from being collapsed due to the impact of the gravel, and the installation of the formwork 1 is more stable.

[0031] Meanwhile, in order to make the steel pipes 2 more stable when being supported on the formwork 1, a supporting rib 14 is arranged at the back side of the formwork 1 in the horizontal direction, the steel pipes 2 are supported on the supporting rib 14 to support the formwork 1, the end of the steel pipe 2 is abutted against the lower side of the supporting rib 14, and the steel pipe 2 can be prevented from sliding on the formwork 1, and the supporting effect is better.

[0032] A plurality of notches are uniformly arranged on the supporting rib 14 along the length direction of the supporting rib 14, the steel pipes 2 are in one-to-one correspondence with the notches and are inserted into the notches to support the formwork 1, the steel pipes 2 are supported at the notches of the supporting rib 14, the formwork 1 can be prevented from causing the steel pipes 2 to slide on the formwork 1 when being impacted, and the stability of the support is further improved.

[0033] In step three, a backfilling soil is laid on the formwork 1 by using a shovel car or a digger, the steel pipes 2 for supporting are removed, and the steel pipes 2 on the back side of the formwork 1 are all removed when the backfilling soil on the back side of the formwork 1 is laid to a certain height.

[0034] Step four, after filling on both sides, pull out the template 1, and compact the backfill, and use artificial hand-held rammer to compact the backfill near the template 1; in order to make the template 1 more easily pulled out, a plurality of lifting holes 13 for pulling out the template 1 are arranged on the top of the template 1, a steel wire is used to pass through the lifting hole 13, and a lifting device is used to pull out the template 1 through the steel wire, which is more convenient to use.

[0035] Step five, use the template 1 to construct the graded gravel and backfill of the upper layer, continue the above steps until the laying of the filter layer is completed.

[0036] Finally, it should be pointed out that the above examples are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and they should be included in the scope of the claims of the present application.

Claims

1. A method for constructing a graded crushed stone filter layer for a retaining wall, characterized in that: Including the template (1) set at the graded crushed stone filter layer of the retaining wall, the following steps are adopted: S1. Move the template (1) to the filter layer of the retaining wall, and according to the tilt angle of the retaining wall, tilt the template (1) to be parallel to the retaining wall. S2. Steel pipes (2) are installed on the back side of the template (1) to support the template (1); S3. Use a loader or excavator to add 500mm of high-grade crushed stone into the template (1), and at the same time, remove the supporting steel pipe (2) while laying the backfill soil on the outside of the template (1). S4. After filling on both sides, pull out the template (1) upwards and compact the backfill soil. Use a hand-held rammer to compact the soil near the template (1). S5. Use template (1) to carry out the construction of the next layer of graded crushed stone and backfill soil; The template (1) is provided with a connecting rib (11) at the splice, and the connecting rib (11) is provided with a quick-release buckle (12) for connecting the template (1). The connecting rib (11) is arranged in a right-angled triangle, and the right-angled side of the connecting rib (11) is located at the top of the template (1) and its width is the same as the thickness of the filter layer; The top of the template (1) is provided with multiple lifting holes (13) for pulling out the template (1).

2. The construction method for the graded crushed stone filter layer of the retaining wall according to claim 1, characterized in that: The template (1) is made by splicing together several steel plates.

3. The construction method for the graded crushed stone filter layer of the retaining wall according to claim 1, characterized in that: The template (1) has a support rib (14) on its back side in the horizontal direction, and the steel pipe (2) is supported on the support rib (14) to support the template (1).

4. The construction method of the graded crushed stone filter layer for retaining walls according to claim 3, characterized in that: The support rib (14) has multiple notches evenly arranged along its own length direction. The steel pipe (2) corresponds to each notch and is inserted into the notch to support the template (1).

Images