CN115897669B - Pile head waterproof structure and construction process thereof - Google Patents
Pile head waterproof structure and construction process thereof Download PDFInfo
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- CN115897669B CN115897669B CN202211497721.9A CN202211497721A CN115897669B CN 115897669 B CN115897669 B CN 115897669B CN 202211497721 A CN202211497721 A CN 202211497721A CN 115897669 B CN115897669 B CN 115897669B
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Abstract
The application relates to the technical field of waterproof construction of building structures, in particular to a pile head waterproof structure and a construction process thereof. The waterproof structure comprises a concrete cushion layer on the periphery of a pile head, wherein the horizontal height of the concrete cushion layer is lower than the top height of the pile head, an expanded diameter part is formed on the pile head through secondary pouring, an arc-shaped connecting part is arranged at the joint of the concrete cushion layer and the expanded diameter part, a circle of water stop back-ridge is arranged at the upper part of the expanded diameter part, a leveling layer is poured on the concrete cushion layer, a waterproof coiled material is paved on the upper surface of the leveling layer, the waterproof coiled material extends to the water stop back-ridge, and a water stop bar is arranged on the water stop back-ridge. The construction process of the waterproof structure comprises the following steps: paving a concrete cushion layer, secondarily pouring an installation mold, brushing waterproof paint, and paving a leveling layer, a waterproof coiled material, a plastic film protective layer, a fine stone concrete protective layer and a self-waterproof reinforced concrete bottom plate in sequence. The application has the advantage of improving the problem that the basement is easy to permeate water from the junction of the concrete filling pile and the superstructure.
Description
Technical Field
The application relates to the technical field of waterproof construction of building structures, in particular to a pile head waterproof structure and a construction process thereof.
Background
At present, along with the continuous development of urban construction, the construction of high-rise buildings and super-high-rise buildings is more and more, the depth and the layer number of basements are also continuously increased, the building engineering with underground civil air defense, underground shops and underground parking lots is more and more common, and the concrete filling pile is a bearing mode commonly selected for the high-rise buildings and the super-high-rise buildings. The concrete filling pile is a pile made by in-situ pore-forming and reinforced concrete filling, and can be divided into a bored pile, a pipe sinking filling pile, a manual hollowing and hole digging bottom expanding filling pile and the like according to different pore-forming methods.
However, in the face of more and more complicated groundwater working conditions and engineering soil properties, basement leakage phenomena are increased, particularly, at the junction of a concrete filling pile and an upper layer structure, groundwater is easy to leak upwards from a gap at the junction, the quality of the building engineering is seriously affected, and great inconvenience is brought to the normal use and management of the basement.
Disclosure of Invention
In order to solve the problem that a basement is easy to permeate water from the junction of a concrete filling pile and an upper layer structure, the application provides a pile head waterproof structure and a construction process thereof.
In a first aspect, the present application provides a pile head waterproof structure, which adopts the following technical scheme:
the utility model provides a pile head waterproof construction, includes the concrete cushion of pile head week side, the horizontal altitude of concrete cushion is less than the top height of pile head, the pile head is formed with expanded footpath portion through the secondary pouring, just concrete cushion with expanded footpath portion's junction is equipped with arc connecting portion, expanded footpath portion upper portion is provided with round stagnant water and reflects the bank, pour the screed-coat on the concrete cushion, the waterproofing membrane has been laid to screed-coat upper surface, waterproofing membrane extends to the stagnant water reflects the bank, install the stagnant water strip on the stagnant water reflects the bank.
Through adopting above-mentioned technical scheme, the pile head of bored concrete pile is broken and is handled, and the top of pile head can have the rugged problem to at the in-process of bored concrete pile formation, the problem of honeycomb face also probably exists to the stake wall, forms the hole enlargement portion through the secondary pouring, can repair the pile head, can make waterproofing membrane and pile head laminating more when laying waterproofing membrane, makes waterproofing membrane can better performance waterproof performance. Through set up arc connecting portion in the junction of concrete cushion and expanded portion, make waterproofing membrane paste on arc connecting portion that can be better when laying, also convenient construction improves the efficiency of construction simultaneously. And a leveling layer is poured on the concrete cushion layer, so that the waterproof coiled material and the concrete cushion layer are more attached, and the waterproof performance is improved. The upper part of the expanding part is provided with a water stop reverse ridge, which can play a role in blocking when groundwater leaks to the upper part. The water stop strip is arranged on the water stop reverse ridge, so that the water stop reverse ridge can further play a role in stopping the groundwater leaking to the upper part, and the effect of preventing the groundwater from leaking is further improved.
Optionally, a plastic film protective layer is paved on the upper surface of the waterproof coiled material, and the plastic film protective layer is in bonding connection with the waterproof coiled material.
Through adopting above-mentioned technical scheme, lay plastic film protective layer in waterproofing membrane upper surface on the aspect play the effect of protection to waterproofing membrane, prevent that upper portion construction from causing the destruction to waterproofing membrane, influence waterproof efficiency, on the other hand can prevent that vapor from passing to upper portion, further promote waterproof efficiency.
Optionally, a first groove for being clamped on the water stop reverse ridge is formed in the water stop bar.
Through adopting above-mentioned technical scheme, offer first recess can make things convenient for the installation of sealing up the strip on the sealing up strip, sealing up strip and sealing up anti-bank cooperation use simultaneously can promote waterproof efficiency.
Optionally, the top of the expanded diameter portion is coated with a waterproof coating, and the waterproof coating is coated on the concrete cushion layer.
Through adopting above-mentioned technical scheme, scribble waterproof coating at the top of expanded footpath portion and can prevent that groundwater from leaking out from the pile head top to scribble waterproof coating to concrete cushion on can further promote waterproof efficiency.
Optionally, a plurality of stake main muscle have stretched out to the upper end of pile head, a plurality of stake main muscle is last to be overlapped and is equipped with the water stopping jacket, just the water stopping jacket with the up end butt of expanding the footpath portion.
Through adopting above-mentioned technical scheme, there is the gap in the junction that pile owner muscle stretched out from the pile head top, and groundwater is possible to leak out from the junction, is provided with the water stopping sleeve in the junction of pile owner muscle and expanded footpath portion, can prevent effectively that groundwater from leaking from the junction to improve the waterproof efficiency of this structure.
Optionally, the water-stop sleeve comprises a water-stop shell and a water-stop inner core, the water-stop shell is in adhesive connection with the water-stop inner core, the water-stop shell is formed by connecting a first arc-shaped plate and a second arc-shaped plate, and arc-shaped abutting plates are arranged on the first arc-shaped plate and the second arc-shaped plate; the connecting buckle is arranged on the first arc-shaped plate, and the connecting rod matched with the connecting buckle is arranged on the second arc-shaped plate.
Through adopting above-mentioned technical scheme, set up the convenient installation of water-stopping cover of stagnant water shell, save engineering time, promote the efficiency of construction, the stagnant water shell can prevent simultaneously that stagnant water inner core from suffering destruction in the work progress to avoid influencing the waterproof efficiency of water-stopping cover.
Optionally, a fine stone concrete protective layer is paved on the plastic film protective layer.
Through adopting above-mentioned technical scheme, lay fine stone concrete protective layer on plastic film protective layer on the one hand can play the guard action to plastic film protective layer, on the other hand can play extrusion effect to plastic film protective layer and waterproofing membrane, promote waterproof performance.
Optionally, a self-waterproof reinforced concrete bottom plate is poured on the fine stone concrete protective layer.
Through adopting above-mentioned technical scheme, pour from waterproof reinforced concrete bottom plate on fine stone concrete protective layer, on the one hand can rely on from waterproof reinforced concrete bottom plate self waterproof performance to play waterproof effect to whole structure, on the other hand covers the substructure from waterproof reinforced concrete bottom plate, can protect the substructure, increase of service life to can separate substructure and upper portion basement space from waterproof reinforced concrete bottom plate, provide the construction place.
In a second aspect, the present application provides a construction process of a pile head waterproof structure, the construction process comprising the steps of:
s1, determining the elevation of a pile head, breaking the pile head of an ultrahigh part, and cleaning broken stone and sundries at the top and the side of the pile head;
s2, tamping a plain soil layer around the pile head;
s3, pouring and paving a concrete cushion layer around the pile head, and controlling the upper surface of the concrete cushion layer to reach the designed elevation;
s4, installing a mould around the pile head, fixedly installing the mould on the concrete cushion layer, pouring concrete between the pile head and the inner wall of the mould until the concrete is solidified, and removing the mould to form an expanded diameter part and a water stop reverse ridge;
s5, coating waterproof paint on the top of the expanded diameter part, and extending to the width of the concrete cushion layer to be not less than 500mm;
s6, pouring and paving a leveling layer on the concrete cushion layer;
s7, paving waterproof coiled materials on the leveling layer, wherein the mutually overlapping length between the waterproof coiled materials is not less than 100mm, and the waterproof coiled materials are paved on the circumferential surface of the side wall of the expanded diameter part of the pile head to reach a water stopping reverse ridge;
s8, paving a plastic film protection layer on the waterproof coiled material, wherein the plastic film protection layer is paved on the circumferential surface of the side wall of the expanded diameter part of the pile head until the water stops up to a reverse threshold;
s9, pouring and paving a fine stone concrete protective layer on the plastic film protective layer;
s10, installing a water stop bar on a water stop reverse ridge, and installing a water stop sleeve at the joint of each pile main rib extending out of the pile head and the top of the diameter expanding part;
s11, pouring and paving the waterproof reinforced concrete bottom plate to the designed elevation on the fine stone concrete protective layer.
Through adopting above-mentioned technical scheme, tamping the plain soil layer around the pile head can make things convenient for pouring of concrete cushion to lay, and rethread lays screed-coat, waterproofing membrane, plastic film protective layer, fine stone concrete protective layer and from waterproof reinforced concrete bottom plate layer upon layer construction, further improves the waterproof performance of structure, and the pile head secondary pouring shaping has the portion of expanding and the anti-bank of stagnant water, and waterproof coating is scribbled at the top of the portion of expanding, installs the water stopping cover on the anti-bank of stagnant water, still further improves the waterproof performance of structure.
In step S4, the mold includes a third arc plate and a fourth arc plate, the third arc plate and the fourth arc plate are both provided with a second groove, one ends of the third arc plate and the fourth arc plate, which are far away from the second groove, are outwards enlarged to form an expanding plate, and the expanding plate is connected with a fixing plate.
Through adopting above-mentioned technical scheme, through mould can one shot forming expanded diameter portion and the reverse bank of stagnant water, improve the efficiency of construction to the mould can reuse, improves economic benefits.
In summary, the present application includes at least one of the following beneficial technical effects:
1. and a leveling layer is poured on the concrete cushion layer, so that the waterproof coiled material and the concrete cushion layer are more attached, and the waterproof performance is improved. The upper part of the expanding part is provided with a water stop reverse ridge, which can play a role in blocking when groundwater leaks to the upper part. The water stop strip is arranged on the water stop reverse ridge, so that the water stop reverse ridge can further play a role in stopping the groundwater leaking to the upper part, and the effect of preventing the groundwater from leaking is further improved.
2. The plastic film protective layer is paved on the upper surface of the waterproof coiled material to protect the waterproof coiled material, so that the waterproof coiled material is prevented from being damaged by upper construction, the waterproof efficiency is affected, and on the other hand, the water vapor is prevented from being transferred to the upper part, and the waterproof efficiency is further improved.
3. The waterproof paint is coated on the top of the expanded diameter part, so that the leakage of underground water from the top of the pile head can be prevented, and the waterproof efficiency can be further improved by coating the waterproof paint on the concrete cushion.
4. The water stopping shell is arranged to facilitate the installation of the water stopping sleeve, the construction time is saved, the construction efficiency is improved, and meanwhile, the water stopping inner core can be prevented from being damaged in the construction process by the water stopping shell, so that the influence on the waterproof efficiency of the water stopping sleeve is avoided.
5. The die can be used for forming the expanded diameter part and the water stop reverse ridge at one time, so that the construction efficiency is improved, the die can be reused, and the economic benefit is improved.
Drawings
Fig. 1 is a schematic view of a pile head according to an embodiment of the present application after waterproofing.
Fig. 2 is a schematic structural view of a water stop strip according to an embodiment of the present application.
FIG. 3 is a schematic view of a water stop jacket according to an embodiment of the present application.
Fig. 4 is a schematic structural view of a mold according to an embodiment of the present application.
Reference numerals: 1. a pile head; 11. an expanded diameter portion; 111. a water stop reverse bank; 2. pile main ribs; 3. a concrete cushion layer; 31. an arc-shaped connecting part; 4. a leveling layer; 5. waterproof coiled materials; 6. a water stop strip; 61. a first groove; 7. a plastic film protective layer; 8. waterproof paint; 9. a water stop sleeve; 91. a water stop shell; 911. a first arcuate plate; 9111. a connecting buckle; 912. a second arcuate plate; 92. a water-stopping inner core; 9121. a connecting rod; 9122. a fastening nut; 913. an arc-shaped abutting plate; 914. a triangle connecting piece; 100. a fine stone concrete protective layer; 110. self-waterproof reinforced concrete bottom plate; 120. a mold; 121. a third arcuate plate; 122. a fourth arcuate plate; 1211. a second groove; 1212. an expanding plate; 1213. and a fixing plate.
Detailed Description
The present application will be described in further detail with reference to fig. 1 to 4.
Referring to fig. 1, a pile head waterproof structure comprises a concrete cushion layer 3 on the periphery of a pile head 1, in this embodiment, the concrete cushion layer 3 is a concrete cushion layer with a thickness of 100mm and a plain C15, the horizontal height of the upper surface of the concrete cushion layer 3 is lower than the top height of the pile head 1, the pile head 1 is formed with an expanded diameter portion 11 by secondarily pouring concrete, an arc-shaped connecting portion 31 is arranged at the joint of the concrete cushion layer 3 and the expanded diameter portion 11, a circle of water stop inverse bank 111 is arranged at the upper portion of the expanded diameter portion 11, the arc-shaped connecting portion 31 and the water stop inverse bank 111 are formed at one time, a leveling layer 4 is poured on the concrete cushion layer 3, the leveling layer 4 is cement mortar with a thickness of 20mm and a mixing ratio of 1:3, a waterproof coiled material 5 is paved on the upper surface of the leveling layer 4, the waterproof coiled material 5 extends to the water stop inverse bank 111, and the waterproof coiled material 5 is a double-sided self-adhesive polymer modified asphalt waterproof coiled material with a thickness of 3 mm. The leveling layer 4 is poured on the concrete cushion layer 3, so that the waterproof coiled material 5 can be attached to the concrete cushion layer 3 more, and the waterproof performance is improved.
The pile head 1 can be trimmed by forming the expanded diameter portion 11 by secondary casting, and the waterproof roll 5 can be attached to the circumferential side wall of the pile head 1 when the waterproof roll 5 is laid, so that the waterproof roll 5 can better exert waterproof performance. The water stop back-bank 111 can play the blocking effect when groundwater leaks towards upper portion, through set up arc connecting portion 31 in the junction of concrete cushion 3 and expanded portion 11, make waterproofing membrane 5 paste that can be better when laying on arc connecting portion 31, also convenient construction improves the efficiency of construction simultaneously.
Referring to fig. 1 and 2, a water stop bar 6 is installed on a water stop reverse bank 111, the water stop bar 6 is a water-swelling rubber water stop bar, and the water stop bar 6 swells to block gaps around the pile head 1 after meeting water, so that the water stop bar can play a role in blocking the groundwater leaking to the upper part, and the effect of preventing the groundwater from leaking is further improved; the first groove 61 used for being clamped on the water stop reverse ridge 111 is formed in the water stop strip 6, so that on one hand, the water stop strip 6 can be conveniently installed, and on the other hand, the water stop strip 6 and the water stop reverse ridge 111 are matched for use, and waterproof efficiency can be improved.
Referring to fig. 1, a plastic film protective layer 7 with the thickness of 0.5mm is laid on the upper surface of a waterproof roll 5, the plastic film protective layer 7 is bonded and connected with the waterproof roll 5, the plastic film protective layer 7 plays a role in protecting the waterproof roll 5 on one hand, the upper construction is prevented from damaging the waterproof roll 5, the waterproof efficiency is affected, on the other hand, water vapor can be prevented from being transmitted to the upper part, and the waterproof performance is further improved.
Referring to fig. 1, the top of the expanded diameter portion 11 is coated with a waterproof paint 8, the coating thickness is not more than 2.4mm, in this embodiment, the waterproof paint 8 is cement-based permeable crystalline waterproof paint, the waterproof paint 8 is coated onto the concrete cushion layer 3, and the width of the coating on the concrete cushion layer 3 is not less than 500mm, the waterproof paint 8 is coated on the top of the expanded diameter portion 11 to prevent groundwater from leaking out from the top of the pile head 1, and the waterproof paint 8 is coated onto the concrete cushion layer 3 to further improve the waterproof efficiency.
Referring to fig. 1 and 3, the upper end of the pile head 1 is extended with a plurality of pile main ribs 2, each pile main rib 2 is sleeved with a water stop sleeve 9, the water stop sleeve 9 is abutted against the upper end face of the diameter expanding part 11, the water stop sleeve 9 comprises a water stop outer shell 91 and a water stop inner core 92, the water stop inner core 92 is water-swelling rubber, the water stop outer shell 91 is in adhesive connection with the water stop inner core 92, the water stop outer shell 91 is formed by connecting a first arc-shaped plate 911 and a second arc-shaped plate 912 through a triangular connecting piece 914, and the triangular connecting piece 914 can enable the water stop outer shell 91 to be opened or closed; the first arc plate 911 and the second arc plate 912 are each provided with an arc-shaped abutting plate 913, which increases the abutting area between the water stop casing 91 and the upper end surface of the enlarged diameter portion 11. Be provided with connector 9111 on the first arc 911, be provided with on the second arc 912 with connector 9111 matched with connecting rod 9121, the one end of connecting rod 9121 is articulated with the lateral wall of second arc 912, and the screw thread is seted up to the other end of connecting rod 9121, and the spiro union has fastening nut 9122 on the connecting rod 9121, can make first arc 911 and second arc 912 connect more firm through adjusting fastening nut 9122, promotes waterproof efficiency.
The water stopping sleeve 9 is arranged at the joint of the pile main rib 2 and the expanded diameter part 11, so that the underground water can be effectively prevented from leaking from the joint, the waterproof efficiency of the structure is improved, the water stopping sleeve 9 is conveniently installed by the water stopping shell 91, the construction time is saved, the construction efficiency is improved, and meanwhile, the water stopping inner core 92 can be prevented from being damaged in the construction process by the water stopping shell 91.
Referring to fig. 1, a fine stone concrete protective layer 100 with the thickness of 50mm and the reference number of C20 is poured and laid on the plastic film protective layer 7, so that on one hand, the plastic film protective layer 7 can be protected, on the other hand, the plastic film protective layer 7 and the waterproof coiled material 5 can be extruded, and the waterproof performance is improved.
Referring to fig. 1, a self-waterproof reinforced concrete bottom plate 110 is poured on a fine stone concrete protection layer 100, on one hand, the whole structure can be waterproof by means of the self-waterproof performance of the self-waterproof reinforced concrete bottom plate 110, and on the other hand, the lower structure is covered by the self-waterproof reinforced concrete bottom plate 110, so that the lower structure can be protected, and the service life is prolonged.
The implementation principle of the embodiment of the application is as follows: when the pile head 1 is subjected to waterproof construction, the pile head 1 in the ultra-high portion is subjected to breaking treatment, broken stone and sundries at the top and the side edges of the pile head 1 are cleaned, a plain soil layer around the pile head 1 is tamped, a concrete cushion layer 3 is poured and paved around the pile head 1, the upper surface of the concrete cushion layer 3 is controlled to reach a designed elevation, a die 120 is installed around the pile head 1, the die 120 is fixedly installed on the concrete cushion layer 3, concrete is poured between the pile head 1 and the inner wall of the die 120 until the concrete is solidified, the die 120 is removed to form an expanded diameter part 11 and a water stop reverse bank 111, waterproof coating 8 is coated on the top of the expanded diameter part 11, the water stop layer is extended to the concrete cushion layer 3, the concrete cushion layer 3 is poured and paved with a leveling layer 4, a waterproof coiled material 5 is paved on the leveling layer 4, the lap joint length between the waterproof coiled material 5 is not less than 100mm, the waterproof coiled material 5 is paved on the periphery of the side wall of the expanded diameter part 11 of the pile head 1 to the water stop reverse bank 111, a plastic film protection layer 7 is paved on the coiled material 5, the plastic film protection layer 7 is paved on the periphery of the expanded diameter part 11 to the water stop bank 11 and is connected with the water stop bank 111 at the top of the expanded diameter reverse bank 1 to the water stop layer 100, and the water stop layer is installed on the expanded diameter reverse bank 1 to the water stop layer 100, and the water stop layer is connected with the water stop layer 100 at the top of the water stop layer 1.
The embodiment of the application also discloses a construction process of the pile head waterproof structure, which comprises the following steps:
s1, determining elevation of a pile head 1, breaking the pile head 1 at the ultrahigh part, and cleaning broken stone and sundries at the top and side edges of the pile head 1;
s2, ramming plain soil, and ramming the plain soil layer around the pile head 1;
s3, pouring and paving a concrete cushion layer 3 around the pile head 1, and controlling the upper surface of the concrete cushion layer 3 to reach a designed elevation;
s4, installing a mould 120 around the pile head 1, fixedly installing the mould 120 on the concrete cushion layer 3, pouring concrete between the pile head 1 and the inner wall of the mould 120 until the concrete is solidified, and removing the mould 120 to form an expanded diameter part 11 and a water stop reverse bank 111;
s5, coating waterproof paint 8 on the top of the expanded diameter part 11, and extending to the concrete cushion layer 3 with the width not smaller than 500mm;
s6, pouring and paving a leveling layer 4 on the concrete cushion layer 3;
s7, paving waterproof coiled materials 5 on the leveling layer 4, wherein the overlapping length between the waterproof coiled materials 5 is not less than 100mm, and paving the waterproof coiled materials 5 on the circumferential surface of the side wall of the expanded diameter part 11 of the pile head 1 to reach a water stop reverse bank 111;
s8: a plastic film protective layer 7 is paved on the waterproof coiled material 5, and the plastic film protective layer 7 is paved on the circumferential surface of the side wall of the expanded diameter part 11 of the pile head 1 to a water stop reverse ridge 111;
s9, pouring and paving a fine stone concrete protective layer 100 on the plastic film protective layer 7;
s10, installing a water stop strip 6 on a water stop reverse ridge 111, and installing a water stop sleeve 9 at the joint of each pile main rib 2 extending out of the pile head 1 and the top of the diameter expansion part 11;
s11, pouring and paving the waterproof reinforced concrete bottom plate 110 to the designed elevation on the fine stone concrete protective layer 100.
Referring to fig. 4, in step S4, the mold 120 includes a third arc plate 121 and a fourth arc plate 122, the third arc plate 121 and the fourth arc plate 122 are each provided with a second groove 1211, one ends of the third arc plate 121 and the fourth arc plate, which are far away from the second grooves 1211, are outwardly expanded to form an expanded diameter plate 1212, the expanded diameter plate 1212 is connected with a fixing plate 1213, the expanded diameter portion 11 and the water stop reverse bank 111 can be formed at one time through the mold 120, the construction efficiency is improved, and the mold 120 can be reused, and the economic benefit is improved.
The embodiments of the present application are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (2)
1. The construction process of the pile head waterproof structure is characterized in that the pile head waterproof structure comprises a concrete cushion layer (3) on the periphery of a pile head (1), and is characterized in that the horizontal height of the concrete cushion layer (3) is lower than the top height of the pile head (1), an expanded diameter portion (11) is formed by secondary pouring of the pile head (1), an arc-shaped connecting portion (31) is arranged at the joint of the concrete cushion layer (3) and the expanded diameter portion (11), a circle of water stop reverse bank (111) is arranged on the upper portion of the expanded diameter portion (11), a leveling layer (4) is poured on the concrete cushion layer (3), a waterproof coiled material (5) is paved on the upper surface of the leveling layer (4), the waterproof coiled material (5) extends to the water stop reverse bank (111), and a water stop bar (6) is arranged on the water stop reverse bank (111).
The construction process comprises the following steps:
s1, determining elevation of a pile head (1), breaking the pile head (1) at the ultrahigh part, and cleaning broken stone and sundries at the top and side edges of the pile head (1);
s2, ramming plain soil, and ramming a plain soil layer around the pile head (1);
s3, pouring and paving a concrete cushion layer (3) around the pile head (1), and controlling the upper surface of the concrete cushion layer (3) to reach a designed elevation;
s4, installing a mould (120) around the pile head (1), fixedly installing the mould (120) on the concrete cushion layer (3), pouring concrete between the pile head (1) and the inner wall of the mould (120) until the concrete is solidified, and dismantling the mould (120) to form an expanded diameter part (11) and a water stop reverse ridge (111);
s5, coating waterproof paint (8) on the top of the expanded diameter part (11) and extending to the concrete cushion layer (3) with the width not smaller than 500mm;
s6, pouring and paving a leveling layer (4) on the concrete cushion layer (3);
s7, paving waterproof coiled materials (5) on the leveling layer (4), wherein the lap joint length between the waterproof coiled materials (5) is not less than 100mm, and paving the waterproof coiled materials (5) on the circumferential surface of the side wall of the expanded diameter part (11) of the pile head (1) to a water stop reverse bank (111);
s8: a plastic film protection layer (7) is paved on the waterproof coiled material (5), and the plastic film protection layer (7) is paved on the circumferential surface of the side wall of the expanded diameter part (11) of the pile head (1) to a water stopping reverse ridge (111);
s9, pouring and paving a fine stone concrete protective layer (100) on the plastic film protective layer (7);
s10, installing a water stop strip (6) on a water stop reverse ridge (111), and installing a water stop sleeve (9) at the joint of each pile main rib (2) extending out of the pile head (1) and the top of the diameter expanding part (11);
s11, pouring and paving the waterproof reinforced concrete bottom plate (110) to the designed elevation on the fine stone concrete protective layer (100).
2. The construction process of the pile head waterproof structure according to claim 1, wherein in the step S4, the mold (120) includes a third arc plate (121) and a fourth arc plate (122), the third arc plate (121) and the fourth arc plate (122) are both provided with a second groove (1211), one ends of the third arc plate (121) and the fourth arc plate, which are far away from the second groove (1211), are outwardly enlarged to form an expanded diameter plate (1212), and the expanded diameter plate (1212) is connected with a fixing plate (1213).
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| CN202211497721.9A CN115897669B (en) | 2022-11-25 | 2022-11-25 | Pile head waterproof structure and construction process thereof |
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| CN202211497721.9A CN115897669B (en) | 2022-11-25 | 2022-11-25 | Pile head waterproof structure and construction process thereof |
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| CN115897669B true CN115897669B (en) | 2023-09-15 |
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