Cantilever retaining wall capable of recycling waste T-shaped beam and construction method

Abstract

The cantilever type retaining wall comprises a plurality of waste L-shaped beams, the sides, with flanges, of the waste L-shaped beams face a mountain, the bottoms of the waste L-shaped beams are embedded into the position below a foundation by a set depth, and the space between the waste L-shaped beams and the mountain is filled and tamped through lateral filling soil; the adjacent ends of all the waste L-shaped beams are fixedly connected through connecting transverse partition plates to form a retaining wall, and settlement joints are arranged on the retaining wall at equal intervals. The invention further discloses a construction method of the cantilever retaining wall for recycling the waste T-shaped beams. According to the method, the T-beam of the abandoned bridge can be reused, pollution of construction waste to the environment is reduced, the retaining wall built by the abandoned T-beam serves as a structure for supporting a natural or artificial slope mountain body to be free of collapse so as to keep the stability of a soil body, and great economic benefits and ecological benefits are achieved.

Description

Technical Field

[0001] This invention belongs to the field of retaining wall technology, specifically relating to a cantilever retaining wall made from recycled waste T-beams, and also to a construction method for a cantilever retaining wall made from recycled waste T-beams, applicable to the construction of cantilever retaining walls using waste T-beams. Background Technology

[0002] With rapid economic development and accelerated infrastructure construction, slope protection is inevitably required during construction. Retaining walls, as structures that support natural or artificial slopes (roadbed fill) to prevent collapse and maintain soil stability, play an increasingly important role. Existing retaining walls mainly employ gravity retaining walls, anchored retaining walls, and buttress retaining walls. Gravity retaining walls require a large amount of masonry materials and have very high requirements for the foundation; anchored retaining walls have high requirements for construction technology and require specialized machinery and equipment for drilling and grouting; buttress retaining walls have high requirements for the foundation and a long construction period. As time goes on, due to increased traffic volume and approaching service life, some bridges will no longer be usable and urgently need to be demolished or rebuilt, resulting in a large amount of waste concrete beams and slabs. If these concrete T-beams and other construction waste could be used for retaining wall construction, the construction cost of retaining walls would be minimized and ecological damage reduced. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the prior art by providing a cantilever retaining wall made from recycled waste T-beams, and also to provide a construction method for such a wall.

[0004] The above-mentioned objectives of the present invention are achieved by the following technical means:

[0005] A cantilever retaining wall made from recycled T-beams includes multiple recycled L-beams. The side of the recycled L-beams with flanges faces the mountain. The bottom of the recycled L-beams is embedded below the foundation to a certain depth. The space between the recycled L-beams and the mountain is filled and compacted with lateral backfill. The adjacent ends of each recycled L-beam are fixedly connected by connecting diaphragms to form a retaining wall.

[0006] As described above, the connecting diaphragm includes concrete cast into the shape of the connecting diaphragm and a diaphragm steel mesh set in the concrete.

[0007] As mentioned above, the partition steel mesh is formed by interlacing and binding several horizontal structural steel bars and several vertical structural steel bars.

[0008] As mentioned above, settlement joints with equal intervals are provided on the retaining wall.

[0009] The settlement joints are filled with asphalt-impregnated hemp fibers or asphalt-impregnated wooden boards.

[0010] A construction method for a cantilever retaining wall made from recycled waste T-beams includes the following steps:

[0011] Step 1: Collect scrap T-beams and classify them according to their span and thickness. Then transport the classified scrap T-beams to the construction site.

[0012] Step 2: Cut the same type of scrap T-beam into two identical scrap L-beams, and then peel off the end concrete of a set length along the length of the scrap L-beam to expose the internal longitudinal structural steel bars.

[0013] Step 3: Level the surface of the foundation;

[0014] Step 4: Place each of the scrap L-shaped beams in the designated positions, with one side of the scrap L-shaped beam facing the mountain. Then, embed the bottom of each scrap L-shaped beam into the ground surface to a designated depth. Use horizontal structural steel bars, vertical structural steel bars, and exposed longitudinal structural steel bars to construct a steel mesh.

[0015] Step 5: Install and fix wooden formwork on both sides of the steel mesh between adjacent scrap L-shaped beams, and then pour concrete to form connecting diaphragms to complete the construction of the retaining wall.

[0016] It also includes the following steps:

[0017] Step 6: Open settlement joints of the same width at equal intervals on the retaining wall, and then fill each settlement joint with asphalt hemp rope or asphalt wood board.

[0018] Step 7: Finally, fill and compact the space between the retaining wall and the mountain by lateral backfilling.

[0019] As described in step 4 above, the steel mesh is constructed in the following way: several transverse structural steel bars are inserted into the longitudinal structural steel bars at the ends of each scrap L-shaped beam, the transverse structural steel bars are tied and fixed with the longitudinal structural steel bars, several vertical structural steel bars are inserted, and the vertical structural steel bars are tied and fixed with the transverse structural steel bars to form a steel mesh.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] This invention can reuse the T-beams of abandoned bridges, reducing the pollution of the environment by construction waste. The abandoned T-beams can be used to build retaining walls as structures to support natural or artificial slopes (or roadbed fill) to prevent them from collapsing and to maintain soil stability, which has significant economic and ecological benefits. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the retaining wall structure of the present invention;

[0023] Figure 2 This is a cross-sectional view of the retaining wall of the present invention;

[0024] Figure 3 This is a schematic diagram of the steel reinforcement mesh of the connecting transverse diaphragm of the present invention;

[0025] Figure labels and corresponding component names:

[0026] 1—Scrap L-shaped beam; 2—Connecting diaphragm; 4—Foundation; 5—Lateral backfill; 6—Longitudinal structural reinforcement; 7—Transverse structural reinforcement; 8—Vertical structural reinforcement. Detailed Implementation

[0027] To facilitate understanding and implementation of the present invention by those skilled in the art, the present invention will be further described in detail below with reference to embodiments. The embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0028] Example 1:

[0029] A cantilever retaining wall made from recycled T-beams includes multiple recycled L-beams 1. The bottom of the recycled L-beams 1 is embedded in the foundation 4 to a depth of 10-50cm or less. The side of the recycled L-beams 1 with flanges faces the mountain. The adjacent ends of each recycled L-beam 1 are fixedly connected by connecting diaphragms 2 to form a retaining wall. The retaining wall is provided with settlement joints 3 at equal intervals. The space between the retaining wall and the mountain is filled and compacted by lateral backfill 5.

[0030] The scrap L-shaped beam 1 was obtained by cutting up scrap T-beams.

[0031] The connecting diaphragm 2 includes concrete poured into the shape of the connecting diaphragm 2 and a diaphragm steel mesh set in the concrete. The diaphragm steel mesh is formed by several horizontal structural steel bars 7 and several vertical structural steel bars 8 tied and fixed in an alternating manner. The thickness of the connecting diaphragm 2 can be set to 20cm.

[0032] The longitudinal structural steel bars 6 at the ends of the scrap L-shaped beam 1 are inserted into the diaphragm steel mesh of the connecting diaphragm 2 and tied and fixed, thereby connecting adjacent scrap L-shaped beams 1 through the connecting diaphragm 2.

[0033] As one possible implementation method, the waste L-shaped beam 1 is embedded 30cm below the foundation 4, and a settlement joint 3 is set every 30m on the retaining wall. The width of each settlement joint 3 is set to 3cm, and the settlement joint 3 is filled with asphalt hemp rope or asphalt wood board.

[0034] Example 2:

[0035] A construction method for a cantilever retaining wall made from recycled waste T-beams includes the following steps:

[0036] Step 1: Collect scrap T-beams and classify them according to their span and thickness. Then, load the classified scrap T-beams onto trucks and transport them to the construction site.

[0037] Step 2: Cut the same type of waste T beam into two identical waste L beams 1 by water sawing or wire sawing. Then peel off 10cm to 20cm of the concrete at the end of the waste L beam 1 along its length to expose the internal longitudinal structural steel bars 6.

[0038] Step 3: Foundation 4. Select a natural foundation with good bearing capacity or an artificial foundation that has been reinforced. The artificial foundation that has been reinforced includes foundation 4 which is backfilled and compacted with stone chip cushion layer, sand cushion layer and mixed lime soil. Then level the surface of foundation 4.

[0039] Step 4: Place each of the scrap L-shaped beams 1 in the designated positions, with one side of the flange of the scrap L-shaped beam 1 facing the mountain. Then, embed the bottom of each scrap L-shaped beam 1 10-50cm below the surface of the foundation 4. Insert several transverse structural steel bars 7 into the longitudinal structural steel bars 6 at the ends of each scrap L-shaped beam 1. Then, tie the transverse structural steel bars 7 and the longitudinal structural steel bars 6 together. Then, insert several vertical structural steel bars 8 and tie the vertical structural steel bars 8 and the transverse structural steel bars 7 together to form a steel mesh.

[0040] Step 5: Install and fix wooden formwork on both sides of the steel mesh between adjacent scrap L-shaped beams 1, and then pour concrete to form connecting diaphragm 2 to complete the construction of the retaining wall.

[0041] Step 6: Make settlement joints 3 with equal spacing and a width of 3cm on the retaining wall, and then fill each settlement joint 3 with asphalt hemp rope or asphalt wood board.

[0042] Step 7: Finally, fill and compact the space between the retaining wall and the mountain using the side fill 5.

[0043] It should be noted that the embodiments described in this invention are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains can make various modifications or additions to the described embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A cantilever retaining wall made from recycled waste T-beams, comprising multiple recycled L-shaped beams (1), characterized in that, The side of the old L-shaped beam (1) with the flange faces the mountain. The bottom of the old L-shaped beam (1) is embedded below the foundation (4) to a set depth. The old L-shaped beam (1) and the mountain are filled and compacted by lateral backfill (5). The adjacent ends of each old L-shaped beam (1) are fixedly connected by connecting diaphragms (2) to form a retaining wall.

2. The cantilever retaining wall based on the recycling of waste T-beams according to claim 1, characterized in that, The connecting diaphragm (2) includes concrete cast into the shape of the connecting diaphragm (2) and a diaphragm steel mesh set in the concrete.

3. The cantilever retaining wall based on the recycling of waste T-beams according to claim 2, characterized in that, The partition steel mesh is formed by interlacing and binding together several horizontal structural steel bars (7) and several vertical structural steel bars (8).

4. The cantilever retaining wall based on the recycling of waste T-beams according to claim 1, characterized in that, The retaining wall is provided with settlement joints (3) at equal intervals.

5. The cantilever retaining wall for recycling waste T-beams according to claim 4, characterized in that, The settlement joint (3) is filled with asphalt hemp rope or asphalt wood board.

6. A construction method for a cantilever retaining wall made from recycled waste T-beams, characterized in that, Includes the following steps: Step 1: Collect scrap T-beams and classify them according to their span and thickness. Then transport the classified scrap T-beams to the construction site. Step 2: Cut the same type of waste T beam into two identical waste L beams (1), and then peel off the end concrete of a set length along the length direction of the waste L beam (1) to expose the internal longitudinal structural steel bars (6). Step 3: Level the surface of the foundation (4); Step 4: Place each piece of waste L-shaped beam (1) in the designated position, with the flange of the waste L-shaped beam (1) facing the mountain. Then embed the bottom of each piece of waste L-shaped beam (1) into the foundation (4) at a set depth below the surface. Use the horizontal structural steel bars (7), vertical structural steel bars (8), and exposed longitudinal structural steel bars (6) to construct a steel mesh. Step 5: Install and fix wooden formwork on both sides of the steel mesh between adjacent old L-shaped beams (1), and then pour concrete to form connecting diaphragms (2) to complete the construction of the retaining wall.

7. The construction method for a cantilever retaining wall made from recycled waste T-beams according to claim 6, characterized in that, It also includes the following steps: Step 6: Open settlement joints (3) with the same spacing and set width on the retaining wall, and then fill each settlement joint (3) with asphalt hemp rope or asphalt wood board. Step 7: Finally, fill and compact the space between the retaining wall and the mountain by lateral backfilling (5).

8. The construction method for a cantilever retaining wall made from recycled waste T-beams according to claim 6, characterized in that, The steel mesh in step 4 is constructed in the following way: several transverse structural steel bars (7) are inserted into the longitudinal structural steel bars (6) at the ends of each scrap L-shaped beam (1), the transverse structural steel bars (7) are tied and fixed with the longitudinal structural steel bars (6), several vertical structural steel bars (8) are inserted, and the vertical structural steel bars (8) are tied and fixed with the transverse structural steel bars (7) to form a steel mesh.

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