CN219364721U

CN219364721U - Waterproof structure of underground high-water-level anti-floating anchor rod

Info

Publication number: CN219364721U
Application number: CN202320002104.0U
Authority: CN
Inventors: 刘闯闯; 张建立; 高洋; 曾治国; 张俊; 赵一策
Original assignee: China Railway No 3 Group Co ltd Transportation Engineering Branch Conmpany; China Railway No 3 Engineering Group Co Ltd
Current assignee: China Railway No 3 Group Co ltd Transportation Engineering Branch Conmpany; China Railway No 3 Engineering Group Co Ltd
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2023-07-18
Anticipated expiration: 2033-01-03

Abstract

The utility model provides a waterproof construction of high water level anti-floating stock underground, belongs to construction technical field, can solve the infiltration hidden danger scheduling problem that anti-floating anchor construction exists of prior art, including anti-floating anchor body, the anti-floating anchor body is located the bed course of the below of drill way and is equipped with local thickening bed course, the bed course is embedded to have the anchor backing plate of taking self-locking nut, the anchor backing plate passes anti-floating anchor body, the top and the bed course top parallel and level of anchor backing plate are equipped with two-layer cement-based infiltration crystallization waterproof layer on the bed course, be equipped with polymer cement waterproof mortar layer on the cement waterproof mortar layer, be equipped with the additional layer on the polymer cement waterproof mortar layer, the additional layer is located around the anti-floating anchor body, the waterproofing membrane layer has been fully spread on the additional layer, the winding meets water-swelling's stagnant water bar on the anti-floating anchor body, it has waterproof oleamen layer to fill between stagnant water bar and the anti-floating anchor body, the top of anti-floating anchor body is equipped with water-swelling rubber ring. The utility model is constructed by a plurality of waterproof measures, and the water impermeability around the anchor rod is ensured.

Description

Waterproof structure of underground high-water-level anti-floating anchor rod

Technical Field

The utility model belongs to the technical field of building construction, and particularly relates to a waterproof structure of an underground high-water-level anti-floating anchor rod.

Background

At present, in the construction process of the anti-floating anchor rod, the waterproof problem of the anti-floating anchor rod is always a weak link in construction.

In the prior art, the Chinese patent application No. 201810126178.9 discloses an anti-floating anchor rod waterproof construction method, and the anti-floating anchor rod waterproof construction method is used for drilling operation on a cushion layer, so that net cracks are easily caused at the supporting legs of drilling equipment in the operation, and waterproof hidden danger exists. And the anchor rods are put down after the primary grouting initial setting and before final setting, so that the centering carriers among the anchor rods are easy to damage, and the anchor rods are released down to incline.

The novel waterproof structure of an anti-floating anchor rod is disclosed in China patent with the application number of 201720180100.6, the anchor rod of the patent is composed of a plurality of steel bars, waterproof coiled materials among the steel bars are difficult to construct, ointment is coated between the coiled materials and the steel bars, and water seepage hidden danger exists.

The Chinese patent publication of application number 201621488750.9 discloses an anti-floating anchor node waterproof structure for a deep foundation pit, and the waterproof construction of a plurality of steel bars of the patent is difficult, and water seepage hidden danger exists.

Disclosure of Invention

Aiming at the problems of hidden water seepage hazards and the like in the construction of the anti-floating anchor rod in the prior art, the utility model provides a waterproof structure of an underground high-water-level anti-floating anchor rod.

The utility model adopts the following technical scheme:

the utility model provides a waterproof construction of high water level anti-floating anchor underground, includes anti-floating anchor body, the anti-floating anchor body is equipped with local thickening bed course under the bed course of the position below of drill way, the bed course is embedded to have the anchor backing plate of taking self-locking nut, the anchor backing plate passes anti-floating anchor body, the top and the bed course top parallel and level of anchor backing plate, be equipped with two-layer cement-based infiltration crystallization waterproof layer on the bed course, be equipped with polymer cement waterproof mortar layer on the cement-based infiltration crystallization waterproof layer, be equipped with the additional layer on the polymer cement waterproof mortar layer, the additional layer is located around the anti-floating anchor body, the full waterproofing membrane layer that has spread on the additional layer, the winding meets water expansion's stagnant water strip on the anti-floating anchor body, it has waterproof oleamen layer to fill between stagnant water strip and the anti-floating anchor body, the top of anti-floating anchor body is equipped with and meets water expansion rubber ring.

Further, the anti-floating anchor body is positioned in an anchor rod drilling hole, and grout is arranged in the anchor rod drilling hole.

Further, the thickness of the locally-thickened cushion layer is 50mm, and the diameter of the locally-thickened cushion layer is at least 1m.

Further, the brushing directions of the two cement-based permeable crystalline waterproof layers are mutually perpendicular.

Further, the number of the polymer cement waterproof mortar layers is two.

Further, the additional layer is an elastomer asphalt waterproof coiled material layer.

Further, the radius of the additional layer is 500mm.

Further, the number of the waterproof coiled material layers is two, the first waterproof coiled material layer and the second waterproof coiled material layer are staggered and overlapped at the root position of the anti-floating anchor body, and the waterproof coiled material layer covers 50cm around the anti-floating anchor body (10).

Further, the number of the water-swellable rubber rings is two.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the anchor backing plate with the self-locking nut is embedded in the cushion layer, so that the dual effects of enhancing the pulling-resistant bearing capacity and stopping water in the first pass are achieved.

2. The utility model is constructed by a plurality of waterproof measures, and the water impermeability around the anchor rod is ensured. After cement-based permeable crystallization waterproof and polymer cement waterproof mortar are coated, multiple protection is achieved by winding water-swelling water stop bars and waterproof ointments.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

wherein: 1-locally thickening the cushion layer; 2-anchor backing plate; 3-cement-based penetrating crystalline waterproof layer; 4-polymer cement waterproof mortar layer; 5-an additional layer; 6-water stop strips; 7-a waterproof ointment layer; 8-a water-swellable rubber ring; 9-a waterproof coiled material layer; 10-anti-floating anchor body.

Detailed Description

The utility model will be further described with reference to the accompanying drawings.

As shown in the figure, the waterproof structure of the underground high-water-level anti-floating anchor rod comprises an anti-floating anchor rod body 10, a local thickening cushion layer 1 is arranged below the cushion layer of the anti-floating anchor rod body 10 below the position of an orifice, an anchor backing plate 2 with a self-locking nut is embedded in the cushion layer, the anchor backing plate 2 penetrates through the anti-floating anchor rod body 1, the top of the anchor backing plate 2 is flush with the top of the cushion layer, two cement-based permeable crystallization waterproof layers 3 are arranged on the cushion layer, a polymer cement waterproof mortar layer 4 is arranged on the cement-based permeable crystallization waterproof layers 3, an additional layer 5 is arranged on the polymer cement waterproof mortar layer 4, the additional layer 5 is arranged on the periphery of the anti-floating anchor rod body 10, a waterproof coiled material layer 9 is fully paved on the additional layer 5, a water-swelling sealing bar 6 is wound on the anti-floating anchor rod body 10, a waterproof ointment layer 7 is filled between the water sealing bar 6 and the anti-floating anchor rod body 10, and a water-swelling rubber ring 8 is arranged on the top of the anti-floating anchor rod body 10.

The construction method of the utility model comprises the following steps:

(1) When the earthwork is excavated, reserving 30cm of artificial clear tank earthwork, drilling holes by an anti-floating anchor rod drilling machine until the designed elevation bottom is drilled;

(2) The assembled single PSB1200 type anchor rod is installed in a descending mode, pressure grouting is carried out after the assembled single PSB1200 type anchor rod is fixed to a designed position, grouting quantity is ensured to meet design requirements, and grouting is stopped after the color of orifice grouting is obviously deepened;

(3) After the construction is completed, manually cleaning a groove of the reserved 30cm earthwork, and expanding the diameter outside the anchor backing plate by at least 1m to prove that the root of the anchor rod is not disturbed;

(4) And after checking and accepting the foundation trench, cushion layer construction is started. When the cushion layer is constructed, a prestress anchor backing plate of a self-locking nut anchorage device is embedded in the surface of the cushion layer, and the top of the anchor backing plate is as high as the top of the cushion layer;

(5) Performing acceptance test after 28d of the grouting body is met or 90% of the design strength of the grouting body is achieved;

(6) After the acceptance test is qualified, a first cement-based infiltration crystallization waterproof layer is coated on the cushion layer, and the radius is 150mm;

(7) After the cement-based infiltration crystallization waterproof is dried and fixed, a second layer is coated, the previous coating is wetted by water before the second layer is coated, and the coating direction of the second layer is vertical to the direction of the first layer;

(8) After the cement-based permeable crystallization waterproof is dried and fixed, the polymer cement waterproof mortar is painted for two times, and the second painting is needed after the first drying and fixing;

(9) An additional layer is paved around the anchor rod, the radius of the additional layer is 500mm, and then the waterproof coiled material is fully paved. The first layer of waterproof coiled material and the second layer of waterproof coiled material are overlapped at the root position of the anti-floating anchor rod in a staggered way, and the periphery of the anti-floating anchor rod body (10) is covered by 50cm.

When the waterproof coiled material is jointed and the head is retracted, the waterproof coiled material needs to be completely baked;

(10) A water-swelling water stop bar is wound and fixed on the periphery of the anchor rod steel bar, and waterproof ointment is filled between the water stop bar and the steel bar;

(11) Before pouring foundation concrete, 2 water-swelling rubber rings are arranged at the top of the anchor rod, so that the waterproof effect of the anti-floating anchor rod is enhanced.

Claims

1. The utility model provides a waterproof construction of high water level anti-floating stock of underground which characterized in that: the anti-floating anchor rod comprises an anti-floating anchor rod body (10), wherein a local thickening cushion layer (1) is arranged below the cushion layer of the anti-floating anchor rod body (10) below the position of an orifice, an anchor backing plate (2) with a self-locking nut is embedded in the cushion layer, the anchor backing plate (2) penetrates through the anti-floating anchor rod body (10), the top of the anchor backing plate (2) is flush with the top of the cushion layer, two cement-based permeable crystallization waterproof layers (3) are arranged on the cushion layer, a polymer cement waterproof mortar layer (4) is arranged on the cement-based permeable crystallization waterproof layers (3), an additional layer (5) is arranged on the polymer cement waterproof mortar layer (4), the additional layer (5) is arranged on the periphery of the anti-floating anchor rod body (10), a waterproof coiled material layer (9) is fully paved on the additional layer (5), a waterproof oil-swelling waterproof rod (6) is wound on the anti-floating anchor rod body (10), a waterproof oil-swelling rubber ring (7) is filled between the waterproof rod (6) and the anti-floating anchor rod body (10), and a water swelling rubber ring (8) is arranged on the top of the anti-floating anchor rod body (10).

The brushing directions of the two cement-based permeable crystallization waterproof layers (3) are mutually perpendicular;

the number of the polymer cement waterproof mortar layers (4) is two;

the number of the waterproof coiled material layers (9) is two, the first waterproof coiled material layer and the second waterproof coiled material layer are staggered and overlapped at the root position of the anti-floating anchor body (10), and the waterproof coiled material layer covers 50cm around the anti-floating anchor body (10).

2. The waterproof structure of an underground high water level anti-floating anchor according to claim 1, wherein: the anti-floating anchor rod body (10) is positioned in an anchor rod drilling hole, and grout is arranged in the anchor rod drilling hole.

3. The waterproof structure of an underground high water level anti-floating anchor according to claim 1, wherein: the thickness of the local thickening cushion layer (1) is 50mm, and the diameter of the local thickening cushion layer (1) is at least 1m.

4. The waterproof structure of an underground high water level anti-floating anchor according to claim 1, wherein: the additional layer (5) is an elastomer asphalt waterproof coiled material layer.

5. The waterproof structure of an underground high water level anti-floating anchor according to claim 1, wherein: the radius of the additional layer (5) is 500mm.

6. The waterproof structure of an underground high water level anti-floating anchor according to claim 1, wherein: the number of the water-swellable rubber rings (8) is two.