CN218813906U - Waterproof structure of underground floor pile head - Google Patents

Abstract

The utility model relates to the technical field of underground bottom plate waterproofing in constructional engineering and municipal engineering, and discloses an underground bottom plate pile head waterproofing structure, which comprises a foundation soil layer, a concrete cushion layer, a waterproof layer, waterproof glue, a coating layer, a water stop strip and a grouting pipe; piles are inserted in the foundation soil layer; the concrete cushion layer is laid on the foundation soil layer; the waterproof layer comprises a first waterproof component and a second waterproof component, the first waterproof component and the second waterproof component are sequentially laid on the concrete cushion layer and are arranged adjacent to the piles, and the second waterproof component and the first waterproof component are welded into a whole; the waterproof glue is bonded between the waterproof layer and the outer wall of the pile body; the coating layer is bonded between the first waterproof component and the concrete cushion layer, is a waterproof layer and a bonding layer, and is used as one of the pile head reinforcing layers. The technical problem that current underground bottom plate easily leaks in pile body department is mainly solved in this application.

Description

Waterproof structure of underground floor pile head

Technical Field

The utility model relates to a waterproof technical field of underground bottom plate among building engineering and the municipal works especially relates to a waterproof structure of underground bottom plate pile head.

Background

The construction process of underground waterproofing in the existing building engineering and municipal engineering comprises the following steps: firstly, driving each pile into soil, then digging the soil downwards to a preset depth, most of the pile is still buried in the soil, after digging, cutting off the redundant part at the top of the pile position, tamping a foundation soil layer at the bottom, paving a concrete cushion layer on the foundation soil layer, wherein the underground water is upwards surged in the foundation soil layer, paving a waterproof layer on the concrete cushion layer, the waterproof layer is made of plastic or rubber, paving waterproof mortar or waterproof glue on a gap between the waterproof layer and the outer wall of the pile body, and finally, paving a reinforced concrete foundation required by a basement on the waterproof layer. Above-mentioned method of air-laid waterproof layer, the bottom surface of waterproof layer easily produces ponding, and the bottom surface of waterproof layer is easily scurried water to lead to the waterproof layer easily for concrete cushion skew, and then lead to the phenomenon that the infiltration easily appears in pile body outer wall, the position that the seepage point produced is also not good judgement moreover.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a waterproof structure of underground floor pile head mainly solves the technical problem that current underground bottom plate easily leaks in pile body department.

To achieve the purpose, the utility model adopts the following technical proposal:

a waterproof structure of a pile head of an underground floor, comprising:

the soil foundation is spliced with piles;

the concrete cushion is laid on the foundation soil layer;

the waterproof layer comprises a first waterproof component and a second waterproof component, the first waterproof component and the second waterproof component are sequentially laid on the concrete cushion layer and are arranged adjacent to the piles, and the second waterproof component and the first waterproof component are connected into a whole;

the waterproof glue is bonded between the waterproof layer and the outer wall of the pile body;

and the coating layer is adhered between the first waterproof component and the concrete cushion layer.

In one embodiment, the first waterproof member includes a first waterproof sheet and a fibrous nonwoven fabric laminated, the fibrous nonwoven fabric is bonded to the paint layer, and the second waterproof member and the first waterproof sheet are integrally connected.

In one embodiment, the second waterproof member includes a second waterproof sheet and a sand layer adhered to an upper surface of the second waterproof sheet, and the first waterproof sheet and the second waterproof sheet are integrally connected.

In one embodiment, the first waterproof sheet and the second waterproof sheet are welded to be one body.

In one embodiment, the coating layer has moisture cure characteristics.

In one embodiment, the thickness of the paint layer is 0.6mm to 1.5mm.

In one embodiment, the first waterproof component covers the periphery of the pile body within 250 mm.

In one embodiment, the waterproof glue is an expansion glue with water-swelling property.

In one embodiment, a water stop strip is arranged on the outer ring of the waterproof adhesive, the water stop strip has the characteristic of water swelling, and the water stop strip wraps the periphery of the swelling adhesive.

In one embodiment, the underground bottom plate pile head waterproof structure further comprises a plurality of grouting pipes, the plurality of grouting pipes are inserted between the foundation soil layer and the concrete cushion layer, and the grouting pipes are used for pouring grouting liquid into the foundation soil layer, so that a waterproof grouting layer is formed in the foundation soil layer.

Compared with the prior art, the utility model provides an at least, following beneficial effect has:

this technical scheme has improved the waterproof layer, has made the waterproof layer two-layerly, and one of them layer is first waterproof component, and the second floor is the waterproof component of second, and, bond through the dope layer between first waterproof component and the concrete cushion and bond integratively, make the bottom of first waterproof component not produce ponding and can not scurry water, thereby make first waterproof component and the waterproof component of second all be difficult for squinting for the concrete cushion, and then make the difficult problem that appears leaking of pile body outer wall department.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic structural view of a waterproof structure of an underground floor pile head according to an embodiment of the present application;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is a schematic structural view of the structure shown in fig. 1 after pouring of the floor concrete.

Wherein, in the figures, the respective reference numerals:

10. a base soil layer; 20. piling; 30. a concrete cushion; 40. a waterproof layer; 401. a first waterproof member; 402. a second waterproof member; 50. expansion glue; 60. a water stop bar; 70. a grouting pipe; 80. a coating layer; 90. reinforcing steel bars; 100. concrete foundation, 200, grouting liquid; 300. and (6) grouting the layer.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operated in a particular orientation, and therefore should not be considered limiting to the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments.

Referring to fig. 1 and 2 together, the present embodiment provides a waterproof structure for a pile head of an underground floor, which includes a foundation layer 10, a concrete pad 30, a waterproof layer 40, a waterproof glue 50, a water stop strip 60, a grouting pipe 70 and a paint layer 80.

Wherein, peg graft on foundation soil layer 10 and have stake 20, the top of stake 20 is that foundation soil layer 10 is exposed, and the top of stake 20 is provided with reinforcing bar 90, and stake 20 is as the main atress spare of whole building.

Wherein, concrete cushion 30 is laid on basic soil layer 10, and concrete cushion 30 highly probably between 5 to 6 centimetres, lays concrete cushion 30 and is convenient for constructor construction, avoids constructor directly to step on loose basic soil layer 10.

Wherein the waterproof layer 40 includes a first waterproof member 401 and a second waterproof member 402, the first waterproof member 401 is laid on the concrete mat 30 within a range of 250mm outside the pile 20, and the second waterproof member 402 is laid on the upper surface of the first waterproof member 401 and welded integrally with the first waterproof member 401. Specifically, the first waterproof member 401 includes a first waterproof sheet and a fiber nonwoven fabric, which are laminated, the fiber nonwoven fabric is disposed on a surface of the first waterproof sheet opposite to the second waterproof member 402, and the first waterproof sheet may be a thermoplastic polyvinyl chloride TPO polymer roll L or a polyvinyl chloride PVC roll. Second waterproof component 402 includes the waterproof sheet of second and bonds in the sand bed of the just upper surface of waterproof sheet of second, and the sand bed is because the roughness of increase waterproof sheet upper surface of second to make constructor can stand the upper surface construction at second waterproof component 402, and the waterproof sheet of second also can choose for use thermoplastic polyvinyl chloride TPO macromolecular coiled material L class or polyvinyl chloride PVC coil material class, makes first waterproof sheet and the waterproof sheet of second weld together reliably. In addition, the first waterproof member 401 and the second waterproof member 402 form a height difference, so that rainwater can flow away along the height difference, water is not accumulated on the outer wall of the pile 20, and the height difference of the two waterproof layers can jointly prevent water from flowing into the outer wall of the pile 20.

Wherein, the fibre non-woven fabrics of dope layer 80 in with concrete cushion 30 and first waterproof component 401 bonds, and dope layer 80 makes first waterproof component 401's bottom not produce ponding and can not scurry water to make first waterproof component 401 and second waterproof component 402 all be difficult for squinting for concrete cushion 30, and then make the difficult problem that appears leaking of stake 20 outer wall department. In this embodiment, the paint layer 80 has a moisture curing property, i.e. the paint layer 80 can be cured in a humid environment. In this embodiment, the coating layer 80 is preferably a modified silane polyether coating, the thickness of the modified silane polyether coating is 0.6mm-1.5mm, the modified silane polyether coating has excellent adhesion, the drying and curing time is short (2 hours of surface drying and 4 hours of total drying), and the modified silane polyether coating can be used in an environment of low temperature of-10 ℃ in winter. The paint layer 80 and the first waterproof member 401 together form a waterproof reinforcing layer.

Wherein, waterproof glue 50 is preferably to be had the expansion glue of water swelling characteristic, and the expansion glue possesses certain sealed and cohesiveness, has water swelling characteristic simultaneously, and the expansion glue is the flexible material that is the paste, and waterproof glue 50 coats between the gap at waterproof layer 40 and stake 20 outer wall, but the expansion glue is continuous construction. After the expansion glue expands with water, underground water can be blocked, the periphery of the pile 20 is prevented from being invaded by water, and the durability and the fatigue resistance of the expansion glue are superior to those of the existing sealant. In addition, because dope layer 80 and first waterproof component 401 are compound together to make first waterproof component 401 and second waterproof component 402 for the problem that the skew can not appear in concrete cushion 30, and then make waterproof glue 50 of waterproof layer 40 and stake 20 outer wall junction also can not receive great pulling force and the easy cracked problem that appears, and then ensure that the water of below can not ooze from the junction of waterproof layer 40 and stake 20 outer wall.

Wherein, the material of sealing rod 60 is acrylic acid, and sealing rod 60 also has the water-swelling characteristic, swells when meeting water, and the former size of retrieval after the drying can expose for a short time not influenced, and sealing rod 60 wraps up around waterproof glue 50, and sealing rod 60 plays waterproof effect on the one hand, and sealing rod 60 still plays the effect of waterproof glue 50 of protection.

Referring to fig. 1, the grouting pipe 70 is used for pouring grouting liquid 200 into the foundation soil layer 10, and the grouting liquid 200 may be cement-water glass or acrylate, and referring to fig. 3, a grouting layer 300 for waterproofing is formed in the foundation soil layer 10.

In this embodiment, the concrete construction process of the underground floor pile head waterproof structure can be referred to as follows:

firstly, driving each pile body 20 into soil, and then digging the soil downwards to a preset depth, wherein most of the pile bodies 20 are still buried in the foundation soil layer 10;

step two, cutting off the redundant part at the top of the pile body 20 to ensure that the top of the pile body 20 is only exposed to a preset height (as shown in figure 1), so that the reinforcing steel bars 90 connected to the pile body 20 can be connected with the internal reinforcing steel bars of the floor of a required building into a whole in the following process;

step three, tamping the base soil layer 10 at the bottom;

step four, pre-burying a plurality of grouting pipes 70 into the foundation soil layer 10, wherein the upper parts of the grouting pipes 70 need to be exposed outwards so as to conveniently inject concrete into the grouting pipes 70 in a follow-up manner, and the distance between every two adjacent grouting pipes 70 is controlled to be about 300 mm;

step five, pouring a concrete cushion layer 30 with the thickness of five centimeters, wherein the concrete cushion layer 30 is C15 fine stone concrete, and after pouring is finished, attention needs to be paid to the fact that a grouting hole in the grouting pipe 70 cannot be blocked;

step six, after the concrete cushion 30 is dried, judging whether cracks exist on the surface of the concrete cushion 30 or places with water leakage exist on the surface of the concrete cushion 30, if so, pouring grouting liquid 200 downwards into a grouting pipe 70 at the periphery of the cracks or the periphery of the water leakage positions so as to form a waterproof grouting layer 300 in the foundation soil layer 10, wherein the grouting layer 300 is used for preventing underground water from entering the concrete cushion 30, and observing whether the surface of the concrete cushion 30 has the problem of water leakage within a specified time;

seventhly, coating a modified silane polyether coating (namely a coating layer 80) with the thickness of 0.6mm on the upper surface of the concrete cushion layer 30 and within the range of 250mm of the periphery of the pile 20, and then paving the first waterproof member 401 on the modified silane polyether coating to enable the fiber non-woven fabric on the lower layer of the first waterproof member 401 to be compounded with the modified silane polyether coating;

step eight, laying a second waterproof member 402 on the first waterproof member 401, wherein after the laying is completed, the sand layer on the upper surface of the first waterproof member 401 faces upward, and welding a first waterproof sheet in the first waterproof member 401 and a second waterproof sheet in the second waterproof member 402 into a whole;

step nine, sequentially coating waterproof glue 50 and water stop strips 60 on gaps between the first waterproof component 401 and the outer wall of the pile body 20 and gaps between the second waterproof component 402 and the outer wall of the pile body 20;

step ten, please refer to fig. 3, finally, the steel bars required by the floor are connected with the steel bars 90 on each pile 20, and then the concrete foundation 100 required by the floor is poured.

The foregoing is only a preferred embodiment of the present invention, and the technical principles of the present invention have been specifically described, and the description is only for the purpose of explaining the principles of the present invention, and should not be construed as limiting the scope of the present invention in any way. Any modifications, equivalents and improvements made within the spirit and principles of the invention and other embodiments of the invention without the creative effort of those skilled in the art are intended to be included within the protection scope of the invention.

Claims (10)

1. A waterproof structure of an underground floor pile head is characterized by comprising:

the foundation soil layer is spliced with piles;

the concrete cushion is laid on the foundation soil layer;

the waterproof layer comprises a first waterproof component and a second waterproof component, the first waterproof component and the second waterproof component are sequentially laid on the concrete cushion layer and are arranged adjacent to the piles, and the second waterproof component and the first waterproof component are connected into a whole;

the waterproof glue is bonded between the waterproof layer and the outer wall of the pile body;

and the coating layer is adhered between the first waterproof component and the concrete cushion layer.

2. The waterproof structure of underground floor pile head according to claim 1, wherein the first waterproof member includes a first waterproof sheet and a fibrous nonwoven fabric laminated, the fibrous nonwoven fabric is bonded to the paint layer, and the second waterproof member and the first waterproof sheet are integrally connected.

3. The waterproof structure of underground floor pile head according to claim 2, wherein the second waterproof member comprises a second waterproof sheet and a sand layer adhered to an upper surface of the second waterproof sheet, and the first waterproof sheet and the second waterproof sheet are integrally connected.

4. The waterproof structure of underground floor pile head according to claim 3, wherein the first waterproof sheet and the second waterproof sheet are welded to one body.

5. The waterproof structure for underground floor pile heads of claim 1, wherein the paint layer has moisture curing property.

6. The waterproof structure of underground floor pile head of claim 1, wherein the thickness of the paint layer is 0.6mm-1.5mm.

7. The waterproof structure of underground floor pile head of claim 1, wherein the first waterproof member covers within 250mm of the outer periphery of the pile body.

8. The waterproof structure for underground floor pile head as claimed in claim 1, wherein the waterproof glue is an expansion glue having water-swelling property.

9. The waterproof structure of underground bottom plate pile head of claim 8, wherein a water stop strip is arranged on the outer ring of the waterproof glue, the water stop strip has the characteristic of water swelling, and the water stop strip is wrapped around the swelling glue.

10. The waterproof structure of an underground floor pile head of claim 1, further comprising a plurality of grouting pipes, wherein the plurality of grouting pipes are inserted between the foundation soil layer and the concrete pad layer, and the grouting pipes are used for pouring grouting liquid into the foundation soil layer so as to form a waterproof grouting layer in the foundation soil layer.

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