CN111691468A - Pile head waterproof structure and construction method thereof - Google Patents
Pile head waterproof structure and construction method thereof Download PDFInfo
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- CN111691468A CN111691468A CN202010600219.0A CN202010600219A CN111691468A CN 111691468 A CN111691468 A CN 111691468A CN 202010600219 A CN202010600219 A CN 202010600219A CN 111691468 A CN111691468 A CN 111691468A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
- E02D31/04—Watertight packings for use under hydraulic pressure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/223—Details of top sections of foundation piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2450/00—Gaskets
- E02D2450/10—Membranes
- E02D2450/105—Membranes impermeable
- E02D2450/106—Membranes impermeable for liquids
Abstract
The invention discloses a pile head waterproof structure and a construction method thereof.A waterproof coiled material is paved firstly and then a post-cast pile head is poured, the waterproof coiled material and the post-cast pile head are integrated, and a buffer rod is arranged at the end part of the post-cast pile head, so that the waterproof coiled material can be settled along with the settlement of the post-cast pile head, the waterproof coiled material cannot be torn due to the stress of the waterproof coiled material caused by the settlement of the pile head, and the integrity and the reliability of the waterproof are ensured. Subside the sealing strip and adopt special construction, under the extrusion of post-cast pile head, inside sealed glue constantly is extruded, sealed waterproofing membrane, foundation pile head and post-cast pile head to along with the subsidence of building, post-cast pile head extrusion pressure grow, subside more quilt of the inside sealed glue of sealing strip are extruded, make waterproofing membrane and pile head sealed inseparabler, and waterproof more reliable, thereby form the virtuous circle. The pile head waterproof structure and the construction method thereof provided by the invention are suitable for pile heads of different types and shapes, such as cast-in-place piles, precast piles, hollow piles and the like, and have high practicability.
Description
Technical Field
The invention relates to the technical field of building waterproofing, in particular to a pile head waterproof structure and a construction method thereof.
Background
Basement is an important component of buildings in China, along with the development of society, the urban density is continuously improved, basement projects such as underground civil air defense, underground shopping malls, underground warehouses, underground parking lots and the like are more and more widely utilized, the depth and the number of layers of the basement are continuously increased and expanded, the common leakage problem of the basement is always a pain point of the basement project quality, the project quality of the basement and buildings on the upper layer of the basement is seriously influenced, and great inconvenience is brought to the normal use, management and maintenance of the basement.
Cause the basement seepage's reason to have a lot of, and the key wherein is the seepage problem at basement pile head position with the key, to the seepage problem at basement pile head position, people have proposed a lot of solutions: for example, the invention patent with the publication number of CN104975617B provides a waterproof construction method for a basement foundation cast-in-place pile head, which has rigid waterproof property and flexible waterproof property, so that the waterproof property of a foundation bearing platform and the waterproof property of the bearing platform and the pile head are combined into a whole, and the leakage point at the pile head is prevented. The invention patent with publication number CN 106759308B provides a waterproof construction method for a prefabricated hollow pile head, which carries out waterproof treatment on the inner and outer side walls and the pile head of the hollow pile, and achieves good waterproof effect through three steps of waterproof treatment. The invention patent with the publication number of CN 109372027A provides a precast pile head waterproof structure and a construction process thereof, adopts a novel MBP coiled material waterproof material, has strong impermeability and high tensile strength, can be tightly bonded with a concrete structure poured on the structure without water channeling, is convenient and quick to construct, and can effectively ensure the waterproof quality. And the invention patents with the publication numbers of CN 208763074U, CN 207959291U and CN 205475361U relate to the waterproof treatment technology of the pile head, but the invention patents fail to solve the problem of the waterproof failure of the pile head caused by the settlement of the building.
The main reason for leakage at the pile head of the basement is that the waterproof failure at the pile head is caused in the process of building settlement, and the groundwater seepage is caused, but the existing building settlement is unavoidable. Therefore, how to ensure the waterproof effect at the pile head is an urgent problem to be solved in the building settlement process.
Disclosure of Invention
The invention aims to provide a pile head waterproof structure and a construction method thereof aiming at the defects of the prior art, and the pile head waterproof structure can effectively solve the problem of leakage at the pile head of a basement.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the first aspect provides a pile head waterproof construction, including the foundation pile head, the lower part of foundation pile head buries in basement soil layer, be equipped with the concrete bed course on the basement soil layer, laid the waterproof layer on the concrete bed course, the top of foundation pile head is higher than the waterproof layer, the upper surface of foundation pile head is equipped with the post-cast pile head, the diameter of post-cast pile head is greater than the diameter of foundation pile head, is equipped with between post-cast pile head and the waterproof layer and subsides the sealing strip, subside the sealing strip respectively with the side of foundation pile head, the upper surface of waterproof layer and the lower surface contact of post-cast pile head.
A further technical scheme is that the settlement sealing strip comprises a sealing glue, an inner film coated outside the sealing glue, an outer net film coated outside the inner film and an outer isolation film coated outside the net film, a hole of the net film is formed in the net film, a self-adhesive layer is further arranged between the net film and the outer isolation film, and the self-adhesive layer is partially coated outside the net film.
The further technical proposal is that the sealant is one or more of asphalt sealant, silicone building sealant, polyurethane building sealant, acrylate building sealant and polysulfide building sealant; the inner film is a low-strength polymer film, and the inner sealant can break through the inner film 6-2 under certain external pressure; the net film is made of high-strength polymer materials, plays a role of supporting a framework in the sedimentation sealing strip, enables the sedimentation sealing strip to keep a certain shape, is provided with a plurality of net film holes capable of allowing the sealant to be extruded out, and is provided with a self-adhesive layer at the bottom of the net film for adhering and fixing sedimentation sealing rubber strips; the outer isolating film is a silicon-coated isolating film which can be peeled off from the self-adhesive layer and the sealant, and plays a role in protecting and isolating the settlement sealing strip.
Optionally, the concrete cushion around the foundation pile head is provided with an annular groove, the annular groove extends to the side face of the foundation pile head, the upper edge of the annular groove is provided with a buffer rod, the buffer rod is located below the waterproof layer, the post-cast pile head is located in the annular groove, the top face of the post-cast pile head is flush with the annular groove or is higher than the annular groove, and the side face of the post-cast pile head is tightly attached to the waterproof layer on the side wall of the annular groove.
A further technical scheme is that the upper edge of the annular groove is provided with a chamfer, and the buffer rod is arranged at the chamfer.
The further technical scheme is that the buffer rod is a semicircular PE foam rod.
Optionally, the concrete cushion around the foundation pile head is equipped with the annular groove, the annular groove sets up with foundation pile head interval, be equipped with the buffer bar in the annular groove, the buffer bar is located the waterproof layer top, the post-cast pile head extends to the top of annular groove, the lower surface and the buffer bar contact of post-cast pile head.
The further technical scheme is that the buffer rod is a round PE foam rod.
According to a further technical scheme, waterproof paint is coated on the upper surface of the foundation pile head, the upper surface of the post-cast pile head and the side surface higher than the annular groove.
A further technical scheme is that reinforcing steel bars (10) are arranged in a pile body of the foundation pile head, the reinforcing steel bars (10) extend out of the top of the post-cast pile head, and water-swelling water stop strips are arranged at the contact positions of the reinforcing steel bars (3) extending out of the top of the post-cast pile head and the post-cast pile head.
The waterproof layer is a waterproof coiled material.
The further technical scheme is that the waterproof layer is one or two layers, and the laying mode is pre-laying reverse adhesion or empty laying or point adhesion or full adhesion.
In a second aspect, a construction method of the pile head waterproof structure is provided, which includes the following steps:
and 6, pouring a post-cast pile head on the foundation pile head, wherein the top surface of the post-cast pile head is flush with or higher than the annular groove, the side surface of the post-cast pile head is tightly attached to the waterproof layer on the side wall of the annular groove, the upper surface and the side surface of the post-cast pile head are cleaned, waterproof paint is coated, and then a water-swelling water stop strip is wound on the root of the reinforcing steel bar extending out of the top of the post-cast pile head. Preferably, after the annular groove is removed in the step 2, chamfering with the length of the inclined side being 20-100 mm is further performed on the upper edge of the annular groove, and the bottom and the side surface of the annular groove are poured or repaired to be flat by C15 or C20 fine stone concrete. And 3, placing the buffer rod at a chamfer angle.
Optionally, the construction method of the pile head waterproof structure includes the following steps:
and 6, pouring a post-cast pile head on the foundation pile head, enabling the lower surface of the post-cast pile head to be in contact with the buffer rod, cleaning the upper surface and the side surface of the post-cast pile head, painting waterproof paint, and winding a water-swelling water stop strip on the root of the reinforcing steel bar extending out of the top of the post-cast pile head.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
1. according to the invention, the waterproof coiled material is paved firstly and then the post-cast pile head is poured, the waterproof coiled material and the post-cast pile head are integrated, and the buffer rod is arranged at the end part of the post-cast pile head, so that the waterproof coiled material can be settled along with the settlement of the post-cast pile head, the waterproof coiled material cannot be torn due to the stress of the waterproof coiled material caused by the settlement of the pile head, and the integrity and the reliability of the waterproof are ensured.
2. The settlement sealing strip adopts a special structure, the sealant inside the settlement sealing strip is continuously extruded under the extrusion of the post-cast pile head to seal the waterproof coiled material, the foundation pile head and the post-cast pile head, the extrusion pressure of the post-cast pile head is increased along with the settlement of the building, more sealant inside the settlement sealing strip is extruded, the waterproof coiled material and the pile head are more tightly sealed, the water resistance is more reliable, and the virtuous circle is formed.
3. The pile head waterproof structure and the construction method thereof provided by the invention are suitable for pile heads of different types and shapes, such as cast-in-place piles, precast piles, hollow piles and the like, and have high practicability.
4. The invention simplifies the waterproof construction and reduces the influence on the waterproof quality caused by the construction of personnel.
Drawings
Fig. 1 is a schematic view of a pile head waterproofing structure according to embodiment 1 of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is a schematic view of a pile head waterproofing structure according to embodiment 2 of the present invention;
fig. 4 is a schematic view of a pile head waterproofing structure according to embodiment 3 of the present invention;
FIG. 5 is a schematic cross-sectional view of a sinker seal bar;
FIG. 6 is a schematic structural view of the sinker seal after the outer release film is peeled off;
fig. 7 is a developed view of the web of the sinker seal.
In the figure: 1. a foundation pile head; 2. a basal soil layer; 3. a concrete cushion; 4. a waterproof layer; 5. post-pouring a pile head; 6. settling the sealing strip; 6-1, sealing gum; 6-2, inner film; 6-3, net film; 6-4, a self-adhesive layer; 6-5, an outer isolating membrane; 6-6, mesh membrane holes; 6-7, strip-shaped non-hole areas; 7. an annular groove; 8. a buffer rod; 9. waterproof paint; 10. reinforcing steel bars; 11. a water stop rod expanding when meeting water.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The utility model provides a pile head waterproof construction, includes foundation pile head 1, the lower part of foundation pile head 1 is buried in basement soil layer 2, be equipped with concrete cushion 3 on basement soil layer 2, concrete cushion 3 upper berth is equipped with waterproof layer 4, foundation pile head 1's top is higher than waterproof layer 4, foundation pile head 1's upper surface is equipped with post-cast pile head 5, post-cast pile head 5's diameter is greater than foundation pile head 1's diameter, is equipped with between post-cast pile head 5 and waterproof layer 4 and subsides sealing strip 6, subside sealing strip 6 respectively with foundation pile head 1's side, waterproof layer 4's upper surface and post-cast pile head 5's lower surface contact, foundation pile head 1's upper surface, post-cast pile head 5's upper surface and the side that exceeds annular groove 7 scribble waterproof coating 9, waterproof coating 9 is infiltration crystallization type waterproof coating. Be equipped with reinforcing bar 10 in the pile body of foundation pile head 1, reinforcing bar 10 stretches out the top of post-cast pile head 5, and the reinforcing bar 3 that stretches out the top of post-cast pile head 5 is equipped with water swelling sealing rod 11 with the post-cast pile head 5 contact department.
The settlement sealing strip 6 comprises a sealant 6-1, an inner film 6-2 coated outside the sealant 6-1, a net film 6-3 coated outside the inner film 6-2 and an outer isolating film 6-5 coated outside the net film 6-3, wherein a net film hole 6-6 is formed in the net film 6-3, a self-adhesive layer 6-4 is further arranged between the net film 6-3 and the outer isolating film 6-5, and the self-adhesive layer 6-4 is partially coated outside the net film 6-3.
Preferably, a strip-shaped non-hole area 6-7 is arranged on the net film 6-3 along the length direction, and the self-adhesive layer 6-4 is arranged on the strip-shaped non-hole area 6-7.
The sealant 6-1 is one or more of asphalt sealant, silicone building sealant, polyurethane building sealant, acrylate building sealant and polysulfide building sealant; the inner film 6-2 is a low-strength polymer film, and the inner sealant 6-1 can break the inner film 6-2 under certain external pressure; the net film 6-3 is made of high-strength polymer materials, plays a role of supporting a framework in the settlement sealing strip, enables the settlement sealing strip to keep a certain shape, is provided with a plurality of net film holes 6-6 which can enable the sealant 6-1 to be extruded out, and is provided with a self-adhesive layer 6-4 for adhering and fixing the settlement sealing strip 6; the outer isolation film 6-5 is a silicon-coated isolation film which can be peeled from the self-adhesive layer 6-4 and the sealant 6-1, and plays a role in protecting and isolating the settlement sealing strip 6.
The waterproof layer 4 is a waterproof coiled material, the number of the waterproof layer 4 is one or two, and the laying mode is pre-laying reverse adhesion or empty laying or point adhesion or full adhesion.
Optionally, the concrete cushion 3 around the foundation pile head 1 is equipped with annular groove 7, annular groove 7 extends to the foundation pile head 1 side, the upper edge department of annular groove 7 is equipped with buffer rod 8, buffer rod 8 is located waterproof layer 4 below, post-cast pile head 5 is located annular groove 7, the top surface of post-cast pile head 5 flushes or is higher than annular groove 7 with annular groove 7, the side of post-cast pile head 5 is hugged closely with waterproof layer 4 of annular groove 7 lateral wall. Preferably, the upper edge of the annular groove 7 is provided with a chamfer, and the buffer rod 8 is arranged at the chamfer. The buffer rod 8 is a semicircular PE foam rod.
The construction method of the pile head waterproof structure comprises the following steps:
and 6, pouring a post-cast pile head 5 on the foundation pile head 1, wherein the top surface of the post-cast pile head 5 is flush with the annular groove 7 or higher than the annular groove 7, the side surface of the post-cast pile head 5 is tightly attached to the waterproof layer 4 on the side wall of the annular groove 7, the upper surface and the side surface of the post-cast pile head 5 are cleaned, the permeable crystallization type waterproof coating 9 is coated, and then the root of the steel bar 3 extending out of the top of the post-cast pile head 5 is wound with the water swelling water stop strip 11.
Preferably, after the annular groove 7 is chiseled in the step 2, chamfering with the length of the chamfer being 20-100 mm is further performed on the upper edge of the annular groove 7, and the bottom and the side surface of the annular groove 7 are poured or repaired to be flat by C15 or C20 fine stone concrete. In the step 3, the buffer rod 8 is a semicircular PE foam rod and is placed at a chamfer.
Optionally, the concrete cushion 3 around the foundation pile head 1 is equipped with annular groove 7, annular groove 7 sets up with foundation pile head 1 interval, be equipped with buffer rod 8 in the annular groove 7, buffer rod 8 is located waterproof layer 4 top, the top of annular groove 7 is extended to post-cast pile head 5, the lower surface and the buffer rod 8 contact of post-cast pile head 5. The buffer rod 8 is a round PE foam rod.
The construction method of the pile head waterproof structure comprises the following steps:
and 6, pouring a post-cast pile head 5 on the foundation pile head 1, enabling the lower surface of the post-cast pile head 5 to be in contact with a buffer rod 8, cleaning the upper surface and the side surface of the post-cast pile head 5, brushing a permeable crystalline waterproof coating 9, and then winding a water-swelling water stop strip 11 on the root of the reinforcing steel bar 3 extending out of the top of the post-cast pile head 5.
Example 1: as shown in fig. 1, 2, 5-7, a pile head waterproof construction, including foundation pile head 1, foundation pile head 1's lower part is buried in basement soil layer 2, be equipped with concrete cushion 3 on basement soil layer 2, foundation pile head 1 concrete cushion 3 all around is equipped with annular groove 7, annular groove 7 extends to foundation pile head 1 side, the top edge of annular groove 7 is provided with the chamfer, chamfer department is provided with buffering stick 8, buffering stick 8 is semicircular PE foam stick. The concrete cushion 3 upper berth is equipped with waterproof layer 4, buffer rod 8 is located waterproof layer 4 below, the waterproof layer 4 that the top of foundation pile head 1 is higher than annular groove 7 bottom surface, the upper surface of foundation pile head 1 is equipped with post-cast pile head 5, models such as the used concrete of post-cast pile head 5, reinforcing bar are unanimous with foundation pile head 1 is used, post-cast pile head 5 four weeks is wide out foundation pile head 250mm, post-cast pile head 5 is located annular groove 7, the top surface of post-cast pile head 5 flushes with annular groove 7, the side of post-cast pile head 5 is hugged closely with waterproof layer 4 of annular groove 7 lateral wall. Be equipped with between the lower surface of post-cast pile head 5 and waterproof layer 4 and subside sealing strip 6, subside sealing strip 6 respectively with the side of foundation pile head 1, the upper surface of waterproof layer 4 and the lower surface contact of post-cast pile head 5, the upper surface of foundation pile head 1, the upper surface of post-cast pile head 5 are scribbled waterproof paint 9, waterproof paint 9 is infiltration crystallization type waterproof paint, infiltration crystallization type waterproof paint thickness position 1mm, the quantity is 1.5kg/m 2. Be equipped with reinforcing bar 10 in the pile body of foundation pile head 1, reinforcing bar 10 stretches out the top of post-cast pile head 5, and the reinforcing bar 3 that stretches out the top of post-cast pile head 5 is equipped with water swelling sealing rod 11 with the post-cast pile head 5 contact department.
The settlement sealing strip 6 comprises a sealant 6-1, an inner film 6-2 coated outside the sealant 6-1, a net film 6-3 coated outside the inner film 6-2 and an outer isolating film 6-5 coated outside the net film 6-3, wherein a net film hole 6-6 is formed in the net film 6-3, a self-adhesive layer 6-4 is further arranged between the net film 6-3 and the outer isolating film 6-5, and the self-adhesive layer 6-4 is partially coated outside the net film 6-3.
Preferably, a strip-shaped non-hole area 6-7 is arranged on the net film 6-3 along the length direction, and the self-adhesive layer 6-4 is arranged on the strip-shaped non-hole area 6-7.
The sealant 6-1 is one or more of asphalt sealant, silicone building sealant, polyurethane building sealant, acrylate building sealant and polysulfide building sealant; the inner film 6-2 is a low-strength PET film, and the inner sealant 6-1 can break the inner film 6-2 under certain external pressure; the net film 6-3 is a PE film with higher strength, plays a role of supporting a framework in the settlement sealing strip, enables the settlement sealing strip to keep a certain shape, is provided with a plurality of net film holes 6-6 which can enable the sealant 6-1 to be extruded out, and is provided with a self-adhesive layer 6-4 for adhering and fixing the settlement sealing strip 6; the outer isolation film 6-5 is a silicon-coated isolation film which can be peeled from the self-adhesive layer 6-4 and the sealant 6-1, and plays a role in protecting and isolating the settlement sealing strip 6.
The waterproof layer 4 is a waterproof coiled material, the number of the waterproof layer 4 is one, and the laying mode is pre-laying reverse adhesion or empty laying or point adhesion or full adhesion.
The construction method of the pile head waterproof structure comprises the following steps:
2, chiseling an annular groove 7 with the width of 250mm and the depth of 450mm on the concrete cushion layer 3 around the foundation pile head 1, extending the annular groove 7 to the side face of the foundation pile head 1, chamfering the upper edge of the annular groove 7 with the length of 50mm, and pouring or repairing the bottom and the side face of the annular groove 7 by C15 or C20 fine stone concrete to be smooth;
and 6, pouring a post-cast pile head 5 above the foundation pile head 1 and the waterproof coiled material within a range of 250mm away from the end part of the foundation pile head 1 (namely in the annular groove 7), wherein the top surface of the post-cast pile head 5 is flush with the annular groove 7, the side surface of the post-cast pile head 5 is tightly attached to the waterproof layer 4 on the side wall of the annular groove 7, the upper surface of the post-cast pile head 5 is cleaned, the permeable crystallization type waterproof coating 9 with the thickness of 1mm is coated, and then the root of the reinforcing steel bar 3 extending out of the top of the post-cast pile head 5 is wound with the water swelling water stop strip 11.
Example 2: as shown in fig. 3, 5-7, a pile head waterproof construction, including foundation pile head 1, foundation pile head 1's lower part is buried in basement soil layer 2, be equipped with concrete cushion 3 on basement soil layer 2, foundation pile head 1 concrete cushion 3 all around is equipped with annular groove 7, annular groove 7 extends to foundation pile head 1 side, annular groove 7's top edge is provided with the chamfer, chamfer department is provided with buffer rod 8, buffer rod 8 is semicircular PE foam stick. The concrete cushion 3 upper berth is equipped with waterproof layer 4, buffer rod 8 is located waterproof layer 4 below, the top of foundation pile head 1 is higher than waterproof layer 4 of annular groove 7 bottom surface, the upper surface of foundation pile head 1 is equipped with post-cast pile head 5, models such as the used concrete of post-cast pile head 5, reinforcing bar are unanimous with foundation pile head 1 is used, post-cast pile head 5 four weeks is wide out foundation pile head 250mm, post-cast pile head 5 is located annular groove 7, the top surface of post-cast pile head 5 is higher than annular groove 7, the side of post-cast pile head 5 is hugged closely with waterproof layer 4 of annular groove 7 lateral wall. Be equipped with between the lower surface of post-cast pile head 5 and waterproof layer 4 and subside sealing strip 6, subside sealing strip 6 respectively with the side of foundation pile head 1, the upper surface of waterproof layer 4 and the lower surface contact of post-cast pile head 5, the upper surface of foundation pile head 1, the upper surface of post-cast pile head 5 and the side that exceeds annular groove 7 scribble waterproof paint 9, waterproof paint 9 is infiltration crystallization type waterproof paint, infiltration crystallization type waterproof paint thickness position 1mm, the quantity is 1.5kg/m 2. Be equipped with reinforcing bar 10 in the pile body of foundation pile head 1, reinforcing bar 10 stretches out the top of post-cast pile head 5, and the reinforcing bar 3 that stretches out the top of post-cast pile head 5 is equipped with water swelling sealing rod 11 with the post-cast pile head 5 contact department.
The settlement sealing strip 6 comprises a sealant 6-1, an inner film 6-2 coated outside the sealant 6-1, a net film 6-3 coated outside the inner film 6-2 and an outer isolating film 6-5 coated outside the net film 6-3, wherein a net film hole 6-6 is formed in the net film 6-3, a self-adhesive layer 6-4 is further arranged between the net film 6-3 and the outer isolating film 6-5, and the self-adhesive layer 6-4 is partially coated outside the net film 6-3.
Preferably, a strip-shaped non-hole area 6-7 is arranged on the net film 6-3 along the length direction, and the self-adhesive layer 6-4 is arranged on the strip-shaped non-hole area 6-7.
The sealant 6-1 is one or more of asphalt sealant, silicone building sealant, polyurethane building sealant, acrylate building sealant and polysulfide building sealant; the inner film 6-2 is a low-strength PET film, and the inner sealant 6-1 can break the inner film 6-2 under certain external pressure; the net film 6-3 is a PE film with higher strength, plays a role of supporting a framework in the settlement sealing strip, enables the settlement sealing strip to keep a certain shape, is provided with a plurality of net film holes 6-6 which can enable the sealant 6-1 to be extruded out, and is provided with a self-adhesive layer 6-4 for adhering and fixing the settlement sealing strip 6; the outer isolation film 6-5 is a silicon-coated isolation film which can be peeled from the self-adhesive layer 6-4 and the sealant 6-1, and plays a role in protecting and isolating the settlement sealing strip 6.
The waterproof layer 4 is a waterproof coiled material, the number of the waterproof layer 4 is one, and the laying mode is pre-laying reverse adhesion or empty laying or point adhesion or full adhesion.
The construction method of the pile head waterproof structure comprises the following steps:
2, chiseling an annular groove 7 with the width of 250mm and the depth of 300mm from the concrete cushion layer 3 around the foundation pile head 1, extending the annular groove 7 to the side face of the foundation pile head 1, polishing the upper edge of the annular groove 7 into a chamfer with the side length of 50mm, and pouring or repairing the bottom and the side face of the annular groove 7 by C15 or C20 fine stone concrete to be smooth;
and 6, pouring a post-cast pile head 5 above the foundation pile head 1 and the waterproof roll within a range of 250mm away from the end part of the foundation pile head 1 (namely in the annular groove 7), wherein the top surface of the post-cast pile head 5 is higher than the annular groove 7, the side surface of the post-cast pile head 5 is tightly attached to the waterproof layer 4 on the side wall of the annular groove 7, the upper surface and the side surface of the post-cast pile head 5 are cleaned, the penetration crystalline waterproof coating 9 with the thickness of 1mm is coated, and then the expansion water stop strip 11 is wound on the root part of the reinforcing steel bar 3 extending out of the top part of the post-cast pile head 5.
Example 3: as shown in fig. 4 to 7, a pile head waterproofing structure comprises a foundation pile head 1, a lower portion of the foundation pile head 1 is buried in a foundation soil layer 2, the foundation soil layer 2 is provided with a concrete cushion 3, the concrete cushion 3 around the foundation pile head 1 is provided with an annular groove 7, the annular groove 7 and the foundation pile head 1 are arranged at intervals, the waterproof layer 4 is laid on the concrete cushion layer 3, a buffer rod 8 is arranged in the annular groove 7, the buffer rod 8 is positioned above the waterproof layer 4, the top end of the foundation pile head 1 is higher than the waterproof layer 4, the upper surface of the foundation pile head 1 is provided with a post-cast pile head 5, the post-cast pile head 5 is made of concrete, steel bars and other types which are consistent with those of the foundation pile head 1, the periphery of the post-cast pile head 5 is 250mm wide of the foundation pile head, the post-cast pile head 5 extends to the upper side of the annular groove 7, and the lower surface of the post-cast pile head 5 is in contact with the buffer rod 8. The buffer rod 8 is a round PE foam rod. Be equipped with between the lower surface of post-cast pile head 5 and waterproof layer 4 and subside sealing strip 6, subside sealing strip 6 respectively with the side of foundation pile head 1, the upper surface of waterproof layer 4 and the lower surface contact of post-cast pile head 5, the upper surface of foundation pile head 1, the upper surface of post-cast pile head 5 and side scribble waterproof paint 9, waterproof paint 9 is infiltration crystallization type waterproof paint, infiltration crystallization type waterproof paint thickness position 1mm, the quantity is 1.5kg/m 2. Be equipped with reinforcing bar 10 in the pile body of foundation pile head 1, reinforcing bar 10 stretches out the top of post-cast pile head 5, and the reinforcing bar 3 that stretches out the top of post-cast pile head 5 is equipped with water swelling sealing rod 11 with the post-cast pile head 5 contact department.
The settlement sealing strip 6 comprises a sealant 6-1, an inner film 6-2 coated outside the sealant 6-1, a net film 6-3 coated outside the inner film 6-2 and an outer isolating film 6-5 coated outside the net film 6-3, wherein a net film hole 6-6 is formed in the net film 6-3, a self-adhesive layer 6-4 is further arranged between the net film 6-3 and the outer isolating film 6-5, and the self-adhesive layer 6-4 is partially coated outside the net film 6-3.
Preferably, a strip-shaped non-hole area 6-7 is arranged on the net film 6-3 along the length direction, and the self-adhesive layer 6-4 is arranged on the strip-shaped non-hole area 6-7.
The sealant 6-1 is one or more of asphalt sealant, silicone building sealant, polyurethane building sealant, acrylate building sealant and polysulfide building sealant; the inner film 6-2 is a low-strength PET film, and the inner sealant 6-1 can break the inner film 6-2 under certain external pressure; the net film 6-3 is a PE film with higher strength, plays a role of supporting a framework in the settlement sealing strip, enables the settlement sealing strip to keep a certain shape, is provided with a plurality of net film holes 6-6 which can enable the sealant 6-1 to be extruded out, and is provided with a self-adhesive layer 6-4 for adhering and fixing the settlement sealing strip 6; the outer isolation film 6-5 is a silicon-coated isolation film which can be peeled from the self-adhesive layer 6-4 and the sealant 6-1, and plays a role in protecting and isolating the settlement sealing strip 6.
The waterproof layer 4 is a waterproof coiled material, the number of the waterproof layer 4 is one, and the laying mode is pre-laying reverse adhesion or empty laying or point adhesion or full adhesion.
The construction method of the pile head waterproof structure comprises the following steps:
2, removing and chiseling an annular groove 7 with the depth of 30mm and the width of 30mm from the concrete cushion layer 3 around the foundation pile head 1, wherein the distance between the annular groove 7 and the foundation pile head is 250 mm;
and 6, pouring the post-cast pile head 5 above the foundation pile head 1 and the waterproof coiled material within 250mm from the end part of the foundation pile head 1, cleaning the upper surface and the side surface of the post-cast pile head 5, brushing the permeable crystalline waterproof coating 9 with the thickness of 1mm, and then winding the water-swelling water stop strip 11 at the root part of the steel bar 3 extending out of the top part of the post-cast pile head 5.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a pile head waterproof construction, includes foundation pile head (1), the lower part of foundation pile head (1) is buried in basement soil layer (2), be equipped with concrete cushion (3) on basement soil layer (2), concrete cushion (3) upper berth is equipped with waterproof layer (4), its characterized in that, the top of foundation pile head (1) is higher than waterproof layer (4), the upper surface of foundation pile head (1) is equipped with post-cast pile head (5), the diameter of post-cast pile head (5) is greater than the diameter of foundation pile head (1), is equipped with between post-cast pile head (5) and waterproof layer (4) and subsides sealing strip (6), subside sealing strip (6) respectively with the side of foundation pile head (1), the upper surface of waterproof layer (4) and the lower surface contact of post-cast pile head (5).
2. The pile head waterproof structure according to claim 1, wherein the settlement sealing strip (6) comprises a sealant (6-1), an inner film (6-2) coated outside the sealant (6-1), a net film (6-3) coated outside the inner film (6-2), and an outer isolation film (6-5) coated outside the net film (6-3), wherein a net film hole (6-6) is formed in the net film (6-3), a self-adhesive layer (6-4) is further arranged between the net film (6-3) and the outer isolation film (6-5), and the self-adhesive layer (6-4) is partially coated outside the net film (6-3).
3. The pile head waterproof structure according to claim 2, wherein the sealant (6-1) is one or more of asphalt sealant, silicone building sealant, polyurethane building sealant, acrylate building sealant, polysulfide building sealant; the inner film (6-2) is a low-strength polymer film; the net film (6-3) is made of high-strength polymer material; the outer isolating film (6-5) is a silicon-coated isolating film which can be peeled off from the self-adhesive layer (6-4) and the sealant (6-1).
4. The pile head waterproof structure according to claim 2, wherein the concrete cushion (3) around the foundation pile head (1) is provided with an annular groove (7), the annular groove (7) extends to the side of the foundation pile head (1), the upper edge of the annular groove (7) is provided with a buffer rod (8), the buffer rod (8) is located below the waterproof layer (4), the post-cast pile head (5) is located in the annular groove (7), the top surface of the post-cast pile head (5) is flush with the annular groove (7) or higher than the annular groove (7), and the side of the post-cast pile head (5) is tightly attached to the waterproof layer (4) on the side wall of the annular groove (7).
5. The pile head waterproofing structure according to claim 4, wherein the upper edge of the annular groove (7) is provided with a chamfer, and the buffer rod (8) is provided at the chamfer.
6. The pile head waterproof structure according to claim 2, wherein the concrete cushion (3) around the foundation pile head (1) is provided with an annular groove (7), the annular groove (7) is spaced from the foundation pile head (1), a buffer rod (8) is arranged in the annular groove (7), the buffer rod (8) is positioned above the waterproof layer (4), and the lower surface of the post-cast pile head (5) is in contact with the buffer rod (8).
7. The pile head waterproofing structure according to claim 1 wherein the upper surface of the foundation pile head (1), the upper surface of the post-cast pile head (5), and the side higher than the annular groove (7) are coated with waterproofing paint (9).
8. The pile head waterproof structure according to claim 1, wherein a steel bar (10) is arranged in the pile body of the foundation pile head (1), the steel bar (10) extends out of the top of the post-cast pile head (5), and a water-swelling water stop strip (11) is arranged at the contact position of the steel bar (3) extending out of the top of the post-cast pile head (5) and the post-cast pile head (5).
9. A construction method of the pile head waterproof structure based on claim 4 is characterized by comprising the following steps:
step 1, paving a concrete cushion (3) around a foundation pile head (1);
step 2, removing an annular groove (7) from the concrete cushion (3) around the foundation pile head (1), wherein the annular groove (7) extends to the side face of the foundation pile head (1);
step 3, chiseling the foundation pile head (1) to a designed elevation, after chiseling is finished, coating waterproof paint (9) on the foundation pile head (1), and placing a buffer rod (8) at the upper edge of the annular groove (7);
step 4, paving a waterproof layer (4) on the concrete cushion layer (3), wherein the waterproof layer (4) is positioned above the buffer rod (8);
step 5, tearing off an outer isolating film (6-5) of the settlement sealing strip (6), adhering the settlement sealing strip (6) to the upper surface of the end part of the waterproof layer (4) close to the foundation pile head (1) through the self-adhesive layer (6-4), and simultaneously clinging to the side surface of the foundation pile head (1);
and 6, pouring the post-cast pile head (5) on the foundation pile head (1), wherein the top surface of the post-cast pile head (5) is flush with the annular groove (7) or higher than the annular groove (7), the side surface of the post-cast pile head (5) is tightly attached to the waterproof layer (4) on the side wall of the annular groove (7), the upper surface and the side surface of the post-cast pile head (5) are cleaned, waterproof paint (9) is coated, and then the expansion water stop strip (11) is wound on the root of the reinforcing steel bar (3) extending out of the top of the post-cast pile head (5).
10. The construction method of the pile head waterproof structure according to claim 6, characterized by comprising the steps of:
step 1, paving a concrete cushion (3) around a foundation pile head (1);
step 2, removing an annular groove (7) from the concrete cushion (3) around the foundation pile head (1), wherein a gap exists between the annular groove (7) and the foundation pile head (1);
step 3, chiseling the foundation pile head (1) to a designed elevation, and after chiseling is finished, coating waterproof paint (9) on the foundation pile head (1);
step 4, paving a waterproof layer (4) on the concrete cushion layer (3), and placing a buffer rod (8) on the waterproof layer (4) at the annular groove (7);
step 5, tearing off an outer isolating film (6-5) of the settlement sealing strip (6), adhering the settlement sealing strip (6) to the upper surface of the end part of the waterproof layer (4) close to the foundation pile head (1) through the self-adhesive layer (6-4), and simultaneously clinging to the side surface of the foundation pile head (1);
and 6, pouring the post-cast pile head (5) on the foundation pile head (1), contacting the lower surface of the post-cast pile head (5) with a buffer rod (8), cleaning the upper surface and the side surface of the post-cast pile head (5), painting waterproof paint (9), and then winding a water-swelling water stop strip (11) at the root of the reinforcing steel bar (3) extending out of the top of the post-cast pile head (5).
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| CN202010600219.0A CN111691468A (en) | 2020-06-28 | 2020-06-28 | Pile head waterproof structure and construction method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113802616A (en) * | 2021-09-30 | 2021-12-17 | 中铁十六局集团第五工程有限公司 | Pile head waterproof structure and construction method |
| CN114411941A (en) * | 2022-01-28 | 2022-04-29 | 山东金城建设有限公司 | Construction method for preventing underground garage from water bottom plate leakage |
| CN114855884A (en) * | 2022-06-09 | 2022-08-05 | 安徽建工集团股份有限公司总承包分公司 | Construction method facilitating early backfill of post-cast strip of underground foundation structure |
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2020
- 2020-06-28 CN CN202010600219.0A patent/CN111691468A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113802616A (en) * | 2021-09-30 | 2021-12-17 | 中铁十六局集团第五工程有限公司 | Pile head waterproof structure and construction method |
| CN113802616B (en) * | 2021-09-30 | 2023-02-21 | 中铁十六局集团第五工程有限公司 | Pile head waterproof structure and construction method |
| CN114411941A (en) * | 2022-01-28 | 2022-04-29 | 山东金城建设有限公司 | Construction method for preventing underground garage from water bottom plate leakage |
| CN114411941B (en) * | 2022-01-28 | 2023-10-03 | 山东金城建设有限公司 | Construction method for preventing leakage of waterproof bottom plate of underground garage |
| CN114855884A (en) * | 2022-06-09 | 2022-08-05 | 安徽建工集团股份有限公司总承包分公司 | Construction method facilitating early backfill of post-cast strip of underground foundation structure |
| CN114855884B (en) * | 2022-06-09 | 2024-03-29 | 安徽建工集团股份有限公司总承包分公司 | Construction method for facilitating advanced backfilling of post-cast strip of underground foundation structure |
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