Water absorption pile treatment immersed foundation

Abstract

The utility model discloses a water absorption pile treatment immersed foundation, and belongs to the field of foundation design. Comprising foundation piles and water absorption piles. Four water absorption piles are arranged on the periphery of the foundation pile, and the water absorption piles and the foundation pile are arranged on the periphery of the foundation pile in the direction that the included angle between the water absorption piles and the foundation pile is 60 degrees. The method for treating the immersed foundation through the water absorption piles in the collapsible loess area has the beneficial effects that the water content in the immersed foundation of a current house building in the collapsible loess area is rapidly reduced through water absorption of the pile body filler, meanwhile, the overall stability and uniformity of the immersed foundation are improved, and the service life of the immersed foundation is prolonged. Potential safety hazards of house building structure quality caused by uneven settlement of the foundation are avoided, the treated foundation meets the use safety requirements of house buildings, meanwhile, secondary damage to the current foundation is not caused in the water soaking foundation treatment construction process, the normal life of residents is not affected, and the negative public opinion influence is reduced.

Description

Technical Field

[0001] The utility model relates to a water-absorbing pile for treating a waterlogged foundation, belonging to the field of foundation design. Background Art

[0002] The outdoor pipe network in residential areas is complicated. Rainfall below the ground, leakage and rupture of sewage and water pipe networks will cause the foundations of existing buildings to be soaked in water for a long time, the moisture content in the foundation will increase, and the bearing capacity of local foundations will decrease, which will easily cause uneven settlement and cause quality defects such as cracking of house walls, cracking of the ground, and tilting of houses. The treatment of soaked foundations usually adopts grouting reinforcement and excavation and replacement. Grouting reinforcement mainly uses pressure grouting to fill the voids caused by uneven settlement and voids in the uncompacted soil layer, but it cannot reduce the moisture content in the soaked foundation. In collapsible loess areas, it is easy to cause secondary damage to the original foundation. The excavation and replacement method to treat the soaked foundation has a large amount of work, a long construction period, and high cost, which brings inconvenience to the lives of residents of the existing houses and is easy to cause negative public opinion. The effects of these two methods of treating existing soaked foundations are not ideal. Utility Model Content

[0003] The utility model aims to provide a water-absorbing pile for treating a flooded foundation, which can effectively solve the above-mentioned problem.

[0004] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0005] It comprises foundation piles and water-absorbing piles; four water-absorbing piles are arranged around the foundation piles, and the water-absorbing piles are arranged around the foundation piles at an inclined angle of 60 degrees.

[0006] Furthermore: the foundation piles are arranged in multiple rows, and the foundation piles in two adjacent rows are staggered.

[0007] Furthermore: the foundation piles in two adjacent rows share some of the water-absorbing piles.

[0008] Furthermore: the diameter of the water-absorbing pile is 400mm, the edge of the water-absorbing pile is at least 500mm away from the edge of the foundation pile, the lateral spacing of the water-absorbing piles is 1300mm, and the longitudinal spacing is 2250mm.

[0009] Furthermore: the pile body material of the water-absorbing pile is quicklime and coarse sand, with a weight ratio of 7:3.

[0010] Furthermore: the bottom material of the water-absorbing pile is concrete.

[0011] Furthermore: a steel cage is arranged in the pile body of the water-absorbing pile, and the steel cage is fixed on the concrete.

[0012] Furthermore: the upper ends of the foundation piles and the water-absorbing piles are filled with plain soil.

[0013] The beneficial effects are:

[0014] This patent develops a method for treating waterlogged foundations in collapsible loess areas with water-absorbing piles. The method absorbs water through the pile body filler, quickly reducing the moisture content in the waterlogged foundations of existing buildings in collapsible loess areas, while improving the overall stability and uniformity of the waterlogged foundation, avoiding safety hazards to the quality of building structures caused by uneven foundation settlement, so that the treated foundation meets the safety requirements for the use of building buildings. At the same time, the construction process of the waterlogged foundation treatment does not cause secondary damage to the existing foundation, does not affect the normal life of residents, and reduces the impact of negative public opinion.

[0015] This utility model patent quickly reduces the moisture content in the waterlogged foundation of existing houses in collapsible loess areas. The moisture content of the waterlogged foundation is reduced to less than 15% after testing. The moisture content of the foundation is reduced and tends to be normal, meeting the foundation treatment requirements. At the same time, it improves the overall stability and uniformity of the waterlogged foundation, avoids quality and safety hazards of the house building structure caused by uneven foundation settlement, and the treated foundation meets the safety requirements for the use of house buildings. At the same time, no secondary damage is caused to the existing foundation of the house building, and the normal life of the residents in the community is not affected. The social benefits are significant. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] For ease of explanation, the present invention is described in detail by the following specific implementations and drawings.

[0017] Figure 1 This is a pile arrangement diagram of the utility model;

[0018] Figure 2 This is a structural diagram of a water-absorbing pile according to Embodiment 1 of the present utility model;

[0019] Figure 3 This is a structural diagram of a water-absorbing pile in Example 2 of the present utility model.

[0020] Description of reference numerals:

[0021] 1. Foundation piles; 2. Water-absorbing piles; 3. Concrete; 4. Steel cage; 5. Bare soil. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0023] See also Figure 1 , Figure 2 This is an embodiment of the utility model of a water-absorbing pile for treating a flooded foundation.

[0024] The structure of the foundation includes foundation piles 1 and water-absorbing piles 2; four water-absorbing piles 2 are arranged around the foundation piles 1, and the water-absorbing piles 2 are arranged around the foundation piles 1 at an angle of 60 degrees to the foundation piles 1; the foundation piles 1 are arranged in multiple rows, and the foundation piles 1 of two adjacent rows are arranged alternately; the foundation piles 1 of two adjacent rows share some water-absorbing piles 2; the diameter of the water-absorbing piles 2 is 400mm, the side of the water-absorbing piles 2 is at least 500mm away from the side of the foundation piles 1, the horizontal spacing of the water-absorbing piles 2 is 1300mm, and the vertical spacing is 2250mm. The upper ends of the foundation piles 1 and the water-absorbing piles 2 are filled with plain soil 5.

[0025] The construction steps of the water-absorbing pile 2 of the local foundation are:

[0026] The first step is to remove the existing ground structure layer and level it to the soil layer;

[0027] The second step is positioning and laying out the water-absorbing pile 2;

[0028] The third step is to drill a hole with an auger until it reaches 1m below the soil layer with a high water content;

[0029] Step 4: Backfill the pile with mixed materials in layers and compact them in layers until they are 1m above the designed pile top elevation;

[0030] Step 5: Capping with plain soil 5;

[0031] Step 6: Repeat steps 2, 3, 4 and 5 to complete all pile construction in a cycle;

[0032] Step 7: Testing the density of the water-absorbing pile 2;

[0033] Step 8: After the water-absorbing piles 2 treat the foundation, the moisture content is tested.

[0034] This utility model patent adopts water-absorbing piles to treat waterlogged foundations. The water content of the waterlogged foundation is greater than 20%. Water is absorbed by the pile body mixing material to reduce the water content of the waterlogged foundation. The diameter of the water-absorbing pile 2 is 400mm. The pile plane layout avoids the original design piles of the existing foundation. The two sides of the water-absorbing pile are at least 500mm away from the original design pile edges of the existing foundation. The horizontal spacing of the water-absorbing pile 2 is 1300mm, and the vertical spacing is 2250mm. The bottom of the pile is 1m deep into the soil layer with a water content of less than 15% of the waterlogged foundation.

[0035] The water-absorbing pile 2 is drilled with a spiral drill. In order to prevent adjacent holes from collapsing, alternate-row skipping pile drilling is adopted. After drilling, the hole depth, verticality and hole diameter are measured immediately, and the mixed material is tamped in time.

[0036] The material of the water-absorbing pile body is quicklime and coarse sand, with a weight ratio of 7:3. The calcium oxide content of quicklime shall not be less than 70%, the powder content shall not exceed 10%, the water content shall not be greater than 5%, and the maximum block diameter shall not be greater than 50mm. The material shall not be stored on site for more than 2 days, and it shall be transported and constructed at the same time. The sand shall not contain soil lumps, and the quicklime and sand shall be mixed evenly. The mixed material shall be compacted layer by layer and backfilled into the pile hole. The filling material shall not exceed 500mm at a time, and the material shall be compacted layer by layer. The dry density of the material shall not be less than 1.1t / m³. Stop filling at 1.0m from the top of the pile hole, and use top capping with a compaction coefficient of not less than 0.97.

[0037] See also Figure 3 , Embodiment 2:

[0038] The difference between this embodiment and the above embodiment is that in the fourth step of the construction steps of the water-absorbing pile 2, a concrete 3 bottom layer is added, and a steel cage 4 is arranged in the pile hole, and a part of the steel cage 4 is sunk into the concrete 3, and after the concrete 3 is solidified, the mixed material is backfilled in layers in the pile;

[0039] Such arrangement can improve the stability and service life of the water-absorbing pile 2.

[0040] The above description is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A water-absorbing pile for treating a flooded foundation, characterized in that: It comprises a foundation pile (1) and a water-absorbing pile (2); four water-absorbing piles (2) are arranged around the foundation pile (1), and the water-absorbing piles (2) are arranged around the foundation pile (1) at an inclined angle of sixty degrees to the foundation pile (1).

2. The water-absorbing pile for treating a flooded foundation according to claim 1, characterized in that: The foundation piles (1) are arranged in a plurality of rows, and the foundation piles (1) in two adjacent rows are arranged in a staggered manner.

3. The water-absorbing pile for treating a flooded foundation according to claim 2, characterized in that: The foundation piles (1) in two adjacent rows share part of the water-absorbing piles (2).

4. The water-absorbing pile for treating a flooded foundation according to claim 3, characterized in that: The water-absorbing pile (2) has a pile diameter of 400 mm, the side of the water-absorbing pile (2) is at least 500 mm away from the side of the foundation pile (1), the lateral spacing of the water-absorbing piles (2) is 1300 mm, and the longitudinal spacing is 2250 mm.

5. The water-absorbing pile for treating a flooded foundation according to claim 4, characterized in that: The pile body material of the water-absorbing pile (2) is quicklime and coarse sand, with a weight ratio of 7:

3.

6. The water-absorbing pile for treating a flooded foundation according to claim 5, characterized in that: The pile bottom material of the water-absorbing pile (2) is concrete (3).

7. The water-absorbing pile for treating a flooded foundation according to claim 6, characterized in that: A steel cage (4) is provided in the pile body of the water-absorbing pile (2), and the steel cage (4) is fixed on the concrete (3).

8. The water-absorbing pile for treating a flooded foundation according to claim 1, characterized in that: The upper ends of the foundation piles (1) and the water-absorbing piles (2) are filled with plain soil (5).

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