Construction method of water seepage resistant and anti-floating anchor rod

Abstract

The application relates to a water-impermeable anti-floating anchor rod construction method, which comprises the following steps: drilling an anchor hole at a construction site; providing an anti-floating anchor rod, arranging the anti-floating anchor rod in the anchor hole, and allowing a part of the anti-floating anchor rod to be exposed above the construction area to form an anti-floating section; excavating a predetermined depth of soil around the anti-floating anchor rod to form a water-impermeable pit; pouring concrete in the anchor hole until the top of the concrete is flush with the bottom of the water-impermeable pit to form a grouting body; providing a water stop plate, fixing the water stop plate on the anti-floating anchor rod in the water-impermeable pit; and filling the water-impermeable pit with concrete, and constructing an underground structure in the construction area after the concrete is solidified.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and specifically to a method for constructing waterproof and buoyant anchor bolts. Background Technology

[0002] This invention relates to the field of building construction technology, and specifically to a method for constructing waterproof and buoyant anchor bolts. Summary of the Invention

[0003] The purpose of this invention is to overcome the defects of the prior art and provide a method for constructing anti-seepage and anti-buoyancy anchors. By setting a waterstop plate on the outer periphery of the anti-buoyancy anchor, the waterstop plate can prevent water from seeping upward along the anti-buoyancy anchor. Furthermore, by pouring concrete in the anti-seepage pit, the outflow of groundwater can be further resisted.

[0004] A method for constructing a waterproof and buoyancy-resistant anchor bolt to achieve the above objectives includes the following steps:

[0005] Anchor holes shall be drilled at the construction location;

[0006] Provide anti-buoyancy anchor bolts, install the anti-buoyancy anchor bolts in the anchor holes, and allow a portion of the anti-buoyancy anchor bolts to protrude above the construction area to form an anti-buoyancy section;

[0007] The soil around the anti-buoyancy anchor is excavated downwards to a predetermined depth to form a seepage prevention pit;

[0008] Concrete is poured into the anchor hole until the top of the concrete is level with the bottom of the seepage prevention pit to form a grouting body.

[0009] Provide a waterstop plate and fix the waterstop plate to the anti-buoyancy anchor rod in the seepage prevention pit;

[0010] The seepage prevention pit is filled with concrete, and after the concrete has solidified, the underground structure is constructed within the construction area.

[0011] Furthermore, before pouring the grout, several anti-buoyancy anchors are provided, and the several anti-buoyancy anchors are inserted into the anchor holes. Rebar plugs are provided, and the rebar plugs are welded and fixed between the several anti-buoyancy anchors.

[0012] Furthermore, before filling the seepage prevention pit with concrete, sand and gravel are filled into the seepage prevention pit to form a sand and gravel layer, the top elevation of which is lower than the installation height of the waterstop plate.

[0013] Furthermore, after the sand and gravel layer is filled, a geotextile is laid on top of the sand and gravel layer. The diameter of the geotextile is adapted to the diameter of the seepage prevention pit. After the geotextile is laid, concrete is poured on top of the geotextile.

[0014] Furthermore, when filling with sand and gravel, select sand and gravel of appropriate size according to the on-site construction requirements.

[0015] Furthermore, when fixing the waterstop plate to the outer periphery of the anti-buoyancy anchor rod, the waterstop plate is welded and fixed to the anti-buoyancy anchor rod.

[0016] Furthermore, after filling the seepage prevention pit with concrete, a cushion layer is poured on top of the seepage prevention pit, the thickness of which is less than the exposed length of the anti-buoyancy section.

[0017] Furthermore, after the foundation layer is poured, a raft slab is poured on top of the foundation layer, the thickness of the raft slab being adapted to the exposed length of the anti-buoyancy section.

[0018] Furthermore, a waterproof protective layer is constructed within the foundation layer during its pouring.

[0019] Furthermore, when installing the waterstop, the size of the waterstop is determined according to the on-site construction requirements.

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

[0021] By installing a waterstop plate around the anti-buoyancy anchor, water can be prevented from seeping upwards along the anti-buoyancy anchor, and concrete can be poured into the anti-seepage pit to further resist the outflow of groundwater. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a water-proof and anti-buoyancy anchor construction method.

[0023] Figure 2 This is a top-view diagram illustrating a method for constructing waterproof and buoyant anchor bolts.

[0024] Legend: 1. Underground structure; 2. Waterstop plate; 3. Anti-buoyancy anchor; 4. Anchor hole; 5. Geotextile; 6. 、 7. Sand and gravel layer; 8. Rebar plug. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] See Figure 1A method for constructing an anti-buoyancy anchor bolt includes the following steps: determining the construction location of the anti-buoyancy anchor bolt 3 within the construction area, and drilling anchor holes 4 at the construction location; providing the anti-buoyancy anchor bolt 3, and installing the anti-buoyancy anchor bolt 3 within the anchor holes 4, with a portion of the anti-buoyancy anchor bolt 3 protruding above the construction area to form an anti-buoyancy section; providing a predetermined excavation depth, and excavating the soil around the anti-buoyancy anchor bolt 3 according to the predetermined excavation depth to form an anti-seepage pit; pouring concrete into the anchor holes 4 until the top of the concrete is flush with the bottom of the anti-seepage pit to form a grouting body; providing a waterstop 2, and fixing the waterstop 2 to the anti-buoyancy anchor bolt 3 within the anti-seepage pit; filling the anti-seepage pit with concrete, and after the concrete has solidified, constructing the underground structure 1 within the construction area.

[0027] In this invention, a preferred embodiment is as follows: several anchor holes 4 are erected within the construction area, and anti-buoyancy anchor rods 3 are installed in each anchor hole 4. The top of the anti-buoyancy anchor rod 3 protrudes above the construction area to form an anti-buoyancy section, thereby improving the overall anti-buoyancy effect of the subsequent underground structure 1. A cube is excavated around the anti-buoyancy anchor rod 3 to form a seepage prevention pit. Concrete is poured into the anchor hole 4 to form a grouting body. After the concrete of the grouting body has solidified, the depth of the seepage prevention pit can be determined according to the water permeability of the soil at the construction site. For soil layers with good permeability, it can be 500mm, and for soil layers with poor permeability, it can be >500mm. In this embodiment, the seepage prevention pit is a 500×500×500mm cube, and the grouting body and anti-buoyancy anchor rod 3 are installed in each anchor hole 4. The floating anchor rod 3 is located at the center of the seepage prevention pit. Then, the waterstop plate 2 is provided. The waterstop plate 2 is a plate with a size of 300×300×3mm. The waterstop plate 2 has a through hole corresponding to the anti-buoyancy anchor rod 3. The waterstop plate 2 is slid onto the anti-buoyancy anchor rod 3 through the through hole and slid into the seepage prevention pit. Then, the anti-buoyancy anchor rod 3 and the waterstop plate 2 are fixed by welding. The waterstop plate 2 and the anti-buoyancy anchor rod 3 are fully welded to avoid gaps between the anti-buoyancy anchor rod 3 and the waterstop plate 2, so that water can pass through the gap between the anti-buoyancy anchor rod 3 and the waterstop plate 2. Then, the seepage prevention pit is filled with concrete to further increase the water-stopping effect of the seepage prevention pit. After the concrete is poured, the underground structure 1 is constructed on several anti-buoyancy sections.

[0028] Furthermore, the edge of the waterstop 2 is formed with an inclined edge plate, and the edge plate and the waterstop 2 form an opening facing upward toward the construction area, so that when water flows along the grouting body, the waterstop 2 can extend the seepage path. When the seepage pressure decreases to zero on the seepage path, the seepage stops, thus playing a role in stopping water. The edge plate can conduct the water flow into the concrete to prevent water from gushing out.

[0029] Furthermore, before pouring the grout, several anti-buoyancy anchors 3 are provided and inserted into the anchor holes 4. Rebar plugs 7 are provided and welded to the anti-buoyancy anchors 3. Preferably, the anti-buoyancy sections at the top of the several anti-buoyancy anchors 3 are arranged in an open shape above the construction area, thereby making the subsequent underground structure 1 more buoyancy-resistant. The several anti-buoyancy anchors 3 are fixedly connected by the rebar plugs 7 to ensure the connection of the anti-buoyancy anchors 3. Preferably, the anti-buoyancy anchors 3 and the rebar plugs 7 are fixedly connected by full welding.

[0030] Furthermore, before filling the seepage prevention pit with concrete, sand and gravel are filled into the seepage prevention pit to form a sand and gravel layer 6, the top elevation of which is lower than the installation height of the waterstop 2. Preferably, the sand and gravel layer 6 can divert some of the water flowing along the grouting body to the surrounding soil, reducing the pressure gushing out from the anti-buoyancy anchor 3.

[0031] Furthermore, after the gravel layer 6 is filled, a geotextile 5 is laid on top of the gravel layer 6. The diameter of the geotextile 5 is adapted to the diameter of the seepage prevention pit. After the geotextile 5 is laid, concrete is poured on top of the geotextile 5. Preferably, the geotextile 5 is used to isolate the concrete slurry above, and the concrete filling on top of the geotextile 5 resists groundwater and reduces the pressure of groundwater outflow.

[0032] Furthermore, when filling with sand and gravel, select sand and gravel of appropriate size according to the on-site construction requirements. Preferably, the sand and gravel layer 6 has a preferred particle size of 8-16mm, thereby increasing the flow path of the water flow to disperse the water flow and prevent the water flow from re-merging.

[0033] Furthermore, when fixing the waterstop plate 2 to the outer periphery of the anti-buoyancy anchor rod 3, the waterstop plate 2 and the anti-buoyancy anchor rod 3 are fixedly connected by welding.

[0034] Furthermore, after filling the seepage prevention pit with concrete, a cushion layer is poured in the construction area, and the anti-buoyancy section passes through the cushion layer to extend above the cushion layer.

[0035] Furthermore, after the foundation layer is poured, a raft slab is poured on top of the foundation layer, and the anti-buoyancy section is set inside the raft slab.

[0036] Furthermore, a waterproof protective layer is constructed within the foundation layer during its pouring.

[0037] Furthermore, when setting the waterstop 2, the size of the waterstop 2 is determined according to the on-site construction requirements.

[0038] The following describes the application process of the water-proof and anti-buoyancy anchor bolt construction method of the present invention.

[0039] Several anchor holes 4 are erected within the construction area, and anti-buoyancy anchor rods 3 are installed in each anchor hole 4. The top of the anti-buoyancy anchor rod 3 protrudes above the construction area to form an anti-buoyancy section, thereby improving the overall anti-buoyancy effect of the subsequent underground structure 1. A cube is excavated around the anti-buoyancy anchor rod 3 to form a seepage prevention pit. Concrete is poured into the anchor hole 4 to form a grouting body. After the concrete of the grouting body has solidified, the depth of the seepage prevention pit can be determined according to the water permeability of the soil at the construction site. For soil layers with good permeability, it can be 500mm, and for soil layers with poor permeability, it can be >500mm. In this embodiment, the seepage prevention pit is a 500×500×500mm cube, and the grouting body and the anti-buoyancy anchor rod 3 are located at the center of the seepage prevention pit. Then, a waterstop plate 2 is provided. The waterstop plate 2 is a 300×300×3mm plate. The waterstop plate 2 has a through hole corresponding to the anti-buoyancy anchor rod 3. The waterstop 2 is slidably installed onto the anti-buoyancy anchor 3 through the through hole and then into the seepage prevention pit. The anti-buoyancy anchor 3 and the waterstop 2 are then fixed by welding, with full welding between them to prevent gaps that would allow water to pass through. The seepage prevention pit is filled with sand and gravel to form a sand and gravel layer 6, on which geotextile 5 is laid. The seepage prevention pit is then filled with concrete to further enhance its water-stopping effect. This triple approach—using the waterstop 2 to extend the seepage path, the sand and gravel layer 6 to relieve pressure, and the concrete filling to resist pressure—achieves a waterproofing method for the anti-buoyancy anchor 3 that penetrates the impermeable layer. This creates a closed loop between the raft foundation waterproofing and the waterproofing at the end of the anti-buoyancy anchor 3, ensuring the waterproofing quality of the underground structure 1. Subsequently, the underground structure 1 can be constructed on several anti-buoyancy sections.

[0040] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A method for constructing a waterproof and anti-buoyancy anchor bolt, characterized in that, Includes the following steps: Anchor holes are drilled at the construction site; Provide anti-buoyancy anchor bolts, install the anti-buoyancy anchor bolts in the anchor holes, and allow a portion of the anti-buoyancy anchor bolts to protrude above the construction area to form an anti-buoyancy section; The soil around the anti-buoyancy anchor is excavated downwards to a predetermined depth to form a seepage prevention pit; Concrete is poured into the anchor hole until the top of the concrete is level with the bottom of the seepage prevention pit to form a grouting body. Provide a waterstop plate and fix the waterstop plate to the anti-buoyancy anchor rod in the seepage prevention pit; The seepage prevention pit is filled with concrete, and after the concrete has solidified, the underground structure is constructed within the construction area.

2. The construction method for a seepage-proof and anti-buoyancy anchor bolt according to claim 1, characterized in that: in Before pouring the grout, several anti-buoyancy anchors are provided, and the several anti-buoyancy anchors are inserted into the anchor holes. Rebar plugs are provided, and the rebar plugs are welded and fixed between the several anti-buoyancy anchors.

3. The construction method for a seepage-proof and anti-buoyancy anchor bolt according to claim 1, characterized in that: in Before filling the seepage prevention pit with concrete, sand and gravel are filled into the seepage prevention pit to form a sand and gravel layer. The top elevation of the sand and gravel layer is lower than the installation height of the waterstop plate.

4. The construction method for a seepage-proof and anti-buoyancy anchor bolt according to claim 3, characterized in that: in After the sand and gravel layer is filled, a geotextile is laid on top of the sand and gravel layer. The diameter of the geotextile is adapted to the diameter of the seepage prevention pit. After the geotextile is laid, concrete is poured on top of the geotextile.

5. The construction method for a seepage-proof and anti-buoyancy anchor bolt according to claim 1, characterized in that: When filling with sand and gravel, select sand and gravel of appropriate size according to the on-site construction requirements.

6. The construction method for a seepage-proof and anti-buoyancy anchor bolt according to claim 1, characterized in that: When fixing the waterstop plate to the outer periphery of the anti-buoyancy anchor rod, the waterstop plate is welded and fixed to the anti-buoyancy anchor rod.

7. The construction method for a seepage-proof and anti-buoyancy anchor bolt according to claim 1, characterized in that: After the seepage prevention pit is filled with concrete, a cushion layer is poured on top of the seepage prevention pit. The thickness of the cushion layer is less than the exposed length of the anti-buoyancy section.

8. The construction method for a seepage-proof and anti-buoyancy anchor bolt according to claim 7, characterized in that: After the foundation layer is poured, a raft slab is poured on top of the foundation layer. The thickness of the raft slab is adapted to the exposed length of the anti-buoyancy section.

9. The construction method for a seepage-proof and anti-buoyancy anchor bolt according to claim 7, characterized in that: During the pouring of the subbase, a waterproof protective layer is constructed within the subbase.

10. The construction method for a seepage-proof and anti-buoyancy anchor bolt according to claim 1, characterized in that: When installing the waterstop, the size of the waterstop is determined according to the on-site construction requirements.

Images