Stress release hole construction device capable of reducing soil squeezing effect

Abstract

The utility model discloses a stress release hole construction device capable of reducing a soil squeezing effect, which comprises an anti-seismic ditch, the anti-seismic ditch is arranged beside a building pile to be built, a plurality of stress release holes are arranged in the anti-seismic ditch at certain intervals, a reinforcement cage is arranged in each stress release hole, and regenerated stones are filled in the reinforcement cages; the stress releasing holes are arranged in a double-row staggered mode, and the distance between every two adjacent stress releasing holes in the same row is 2 m. According to the stress release hole construction device capable of reducing the soil squeezing effect, the reasonable stress release holes are formed, pore water pressure generated in the pile pressing process is dissipated into the stress release holes, the squeezing effect of a soil body is relieved, and therefore the influence of deformation of the soil body on the surrounding environment is greatly reduced, and the sedimentation value of surrounding buildings is reduced. The construction device is easy to operate and short in construction period, traditional yellow sand is replaced with renewable energy such as recycled stone, and the economic cost is low.

Description

Technical Field

[0001] This utility model relates to a stress relief hole construction device, and more particularly to a stress relief hole construction device that can reduce the soil squeezing effect. Background Technology

[0002] With the rapid development of civil engineering, pile foundations are widely used in construction projects. Static pressure pile driving is a major method for driving precast piles. Precast piles offer advantages such as easy inspection and assurance of pile quality, high construction efficiency, low cost, and no mud pollution. However, during precast pile construction, soil squeezing effects often occur, causing varying degrees of damage to surrounding buildings, roads, and underground pipelines. Therefore, arranging stress relief holes within the pile foundation construction area is an effective measure to reduce soil squeezing effects, thereby ensuring the safety of surrounding buildings and structures during static pressure pile driving. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a stress relief hole construction device that can reduce the soil squeezing effect, which can effectively solve the soil squeezing effect that will occur during the construction of pipe piles, reduce the deformation of the surrounding soil, and thus reduce the settlement value of the surrounding buildings (structures).

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is to provide a stress relief hole construction device that can reduce the soil squeezing effect, including an anti-vibration trench. The anti-vibration trench is arranged next to the pile of the proposed building. Multiple stress relief holes are arranged at a certain interval in the anti-vibration trench. Each stress relief hole is equipped with a steel cage, and the steel cage is filled with recycled stone.

[0005] Furthermore, the multiple stress relief holes are arranged in staggered double rows, with a spacing of 2m between two adjacent stress relief holes in the same row.

[0006] Furthermore, the anti-seismic trench is located between the existing building piles and the brick-concrete structure, and the distance between the anti-seismic trench and the proposed building piles is 1 to 1.5 times the length of the proposed building piles. The anti-seismic trench is provided with reserved holes.

[0007] Furthermore, the steel cage is covered with plastic filter cloth, woven cloth, or safety net.

[0008] Furthermore, the particle size of the recycled stone is 9.5 mm to 16 mm.

[0009] Furthermore, the stress relief hole has a depth of 18m, a diameter of 700mm, and an outer diameter of 650mm for the cross-section of the reinforcing cage.

[0010] Furthermore, the raw stone is level with the natural ground level.

[0011] Compared with existing technologies, this utility model has the following advantages: The stress relief hole construction device provided by this utility model, which reduces soil squeezing effect, dissipates the pore water pressure generated during pile driving into the stress relief hole by setting up a reasonable stress relief hole, thereby alleviating the soil squeezing effect and significantly reducing the impact of soil deformation on the surrounding environment. This construction device is simple to operate, has a short construction period, and uses recycled stone and other renewable energy sources instead of traditional yellow sand, resulting in low economic costs and promoting green, environmentally friendly, and sustainable development. Attached Figure Description

[0012] Figure 1 This is a schematic cross-sectional view of the stress relief hole construction device of this utility model that can reduce soil squeezing effect;

[0013] Figure 2 This is a schematic diagram of the planar layout structure of the stress relief hole construction device of this utility model.

[0014] The diagram is marked as follows:

[0015] 1. Stress relief hole; 2. Seismic isolation trench; 3. Reinforcing cage.

[0016] 4. Recycled stone materials; 5. Proposed building piles; 6. Brick-concrete structure. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic cross-sectional view of the stress relief hole construction device of this utility model that can reduce soil squeezing effect; Figure 2 This is a schematic diagram of the planar layout structure of the stress relief hole construction device of this utility model.

[0019] Please see Figure 1 and Figure 2 The stress relief hole construction device provided by this utility model, which can reduce the soil squeezing effect, includes an anti-vibration trench 2, which is arranged next to the pile 5 of the proposed building and close to the side of the brick-concrete structure 6 of the adjacent building. Multiple stress relief holes 1 are arranged in the anti-vibration trench 2 at a certain interval, and the multiple stress relief holes 1 are arranged in double rows in a staggered manner. A steel cage 3 is set in each stress relief hole 1, and the steel cage 3 is filled with recycled stone material 4.

[0020] The stress relief hole construction device provided by this utility model, which can reduce the soil squeezing effect, preferably involves excavating an anti-vibration trench 2 at a distance of 1 to 1.5 times the length of the proposed building pile and installing double rows of quincunx-shaped corrugated pipes, then drilling in a Z-shape. Hole positions can be pre-reserved within the anti-vibration trench 2 to facilitate additional drilling at pre-reserved positions when obstacles arise in drilling at the original locations.

[0021] The stress relief hole construction device provided by this utility model can reduce the soil squeezing effect. The process of drilling stress relief holes is as follows: water is used for mixing during drilling, natural slurry is formed for wall protection, and the slurry density is 1.3t / m³. 3 Drilling should be performed with pressure applied according to the soil conditions. Start with light pressure and slow rotation speed, gradually increasing to normal. For general soil layers, apply pressure using the drill bit's own weight and the steel cable. The stress-relief pile driver speed is: 180 r / min for alloy drill bits and 100 r / min for steel pellet drill bits. In soft soil layers, the drilling speed should be controlled according to the mud supply. In hard soil or rock layers, the drilling speed should be such that the stress-relief pile driver does not jump. After mixing, dilute the mud in the hole with clean water. The cleaning time should be no less than 10 minutes, and the mud density after cleaning should not exceed 1.2 t / m³. 3 .

[0022] The stress relief hole construction device provided by this utility model has a stress relief hole 1 with a diameter of 700mm and a depth of 18m. The distance between two adjacent stress relief holes 1 in the same row is 2m (from hole to hole edge). After the hole is formed, a full-length steel cage 3 with a size of 650mm is placed in the hole. The steel cage 3 is wrapped with plastic filter cloth, woven cloth, or safety net to facilitate the discharge of pore water pressure. Recycled stone material 4 should then be poured into the relief hole. The specific placement and filling process is as follows:

[0023] A steel cage 3 is usually placed inside the stress relief hole 1, and then backfilled with recycled stone material 4 to the natural ground level.

[0024] The stress relief hole 1 is first filled with recycled stone material 4 up to the top of the hole. After the stone material settles, it is filled again. The moisture content of the stone material should be controlled during filling. For saturated soil layers, a saturated state can be used. For miscellaneous fill or unsaturated soil layers, the moisture content can be adjusted appropriately. There is no fixed value for the moisture content of the recycled stone material 4. If it is found that the recycled stone material 4 is insufficient or interrupted, the hole can be re-drilled and filled with stone material in the original location.

[0025] Recycled stone should be used, with a particle size of 9.5mm to 16mm and a mud content of no more than 5%.

[0026] This utility model provides a stress relief hole construction device that can reduce soil squeezing effect. Its arrangement and the internal placement of steel cages and recycled stone materials, combined with the anti-vibration trench extending into the underground clay layer, can effectively reduce the pore water pressure generated during the pile driving process, dissipate it into the stress relief hole, alleviate the soil squeezing effect, and thus greatly reduce the impact of soil deformation on the surrounding environment.

[0027] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A stress relief hole construction device that can reduce soil squeezing effect, characterized in that, The structure includes a shock-resistant trench (2), which is located next to the piles (5) of the proposed building. Multiple stress relief holes (1) are arranged at certain intervals in the shock-resistant trench (2), and a steel cage (3) is installed in each stress relief hole (1). The steel cage (3) is filled with recycled stone (4).

2. The stress relief hole construction device for reducing soil squeezing effect as described in claim 1, characterized in that, The multiple stress relief holes (1) are arranged in two staggered rows, with a spacing of 2m between two adjacent stress relief holes (1) in the same row.

3. The stress relief hole construction device for reducing soil squeezing effect as described in claim 1, characterized in that, The anti-seismic trench (2) is located between the building pile (5) and the brick-concrete structure (6). The distance between the anti-seismic trench (2) and the building pile (5) is 1 to 1.5 times the length of the building pile. The anti-seismic trench (2) is provided with reserved holes.

4. The stress relief hole construction device for reducing soil squeezing effect as described in claim 1, characterized in that, The steel cage (3) is covered with plastic filter cloth, woven cloth or safety net.

5. The stress relief hole construction device for reducing soil squeezing effect as described in claim 1, characterized in that, The particle size of the recycled stone (4) is 9.5 mm to 16 mm.

6. The stress relief hole construction device for reducing soil squeezing effect as described in claim 1, characterized in that, The stress relief hole (1) has a depth of 18m and a diameter of 700mm. The outer diameter of the cross-section of the steel cage (3) is 650mm.

7. The stress relief hole construction device for reducing soil squeezing effect as described in claim 1, characterized in that, The raw stone (4) is level with the natural ground level.

Images