CN114277789B - Pile-in-pile structure formed based on defect filling pile construction - Google Patents
Pile-in-pile structure formed based on defect filling pile construction Download PDFInfo
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Abstract
The invention relates to the technical field of cast-in-place piles and discloses a pile-in-pile structure formed based on defective cast-in-place pile construction, which comprises a pile body, wherein the pile body comprises a pile ring, and the pile ring surrounds a pile middle hole; the pile ring is internally provided with an original reinforcement cage, and the bottom of a hole in the pile extends to the defect position of the pile body; binding a new reinforcement cage in the pile middle hole, wherein the new reinforcement cage comprises a plurality of new main reinforcements and a plurality of new stirrups, the plurality of new main reinforcements are arranged in the pile middle hole, the plurality of new main reinforcements are annularly arranged along the Zhou Xiangyi sequence interval of the pile middle hole, and the new main reinforcements are abutted against the inner side wall of the pile middle hole; pouring concrete into the holes of the piles, and forming a whole with the pile rings after the concrete is solidified; the newly constructed cast-in-place pile is positioned in the original reinforcement cage, and has low requirements on the treatment field; in the construction process, the pile ring is used as an excavation retaining wall, the water stopping effect is good, and the whole construction is safe and reliable; only a new pile with the diameter slightly smaller than that of the defect filling pile is constructed in the defect filling pile, the influence on other construction procedures on site is small, and the comprehensive construction cost is greatly reduced.
Description
Technical Field
The invention relates to the technical field of cast-in-place piles, in particular to a pile-in-pile structure formed based on defective cast-in-place pile construction.
Background
In the process of pile foundation engineering in the process of pouring into piles, quality common problems such as pile body concrete dispersion, pile breakage, pile bottom sediment thickness exceeding standard and the like can occur to a certain extent due to the influence of complex stratum conditions, improper process operation or abnormal concrete materials and the like.
When the cast-in-place pile is detected and judged to be a defective cast-in-place pile, the common practice is to reinforce the pile by grouting, or to re-construct the pile on the original cast-in-place pile, or to process the pile by adopting a method of re-repairing the pile, etc. However, when the defect position of the defect cast-in-place pile is buried deeply or the defect section is larger, the grouting reinforcement method is difficult to ensure the treatment quality effectively, and has the problems of long secondary inspection and maintenance time and the like; if reworking is carried out on the original pile position, the construction time is long and the cost is increased in the pile forming process due to high concrete strength and large steel bar content, and the large pile machine is difficult to enter due to the fact that a pile foundation bearing platform is excavated, and is limited by a construction site; and by adopting the scheme of re-filling piles, two or more symmetrical piles are used for replacing the original piles, a foundation pile cap is required to be enlarged, the construction progress is slow, the pile body maintenance and quality detection period is long, and the overall treatment cost is high.
Disclosure of Invention
The invention aims to provide a pile-in-pile structure formed based on defective cast-in-place pile construction, and aims to solve the problem of high cost in the prior art of defective cast-in-place pile maintenance treatment.
The invention is realized in such a way, and the pile-in-pile structure formed based on the construction of the defect filling pile is characterized by comprising a pile body, wherein the pile body comprises pile rings which are annularly arranged, and pile holes with open tops are formed in the pile rings in a surrounding mode; the pile ring is internally provided with an original reinforcement cage, and the bottom of the pile middle hole extends to the defect position of the pile body;
the novel reinforcement cage penetrates through the pile middle hole from top to bottom, the novel reinforcement cage comprises a plurality of novel main reinforcements and a plurality of novel stirrups, the novel main reinforcements are arranged in the pile middle hole, the novel main reinforcements are annularly encircling along the Zhou Xiangyi sequence interval of the pile middle hole, and the novel main reinforcements are abutted against the inner side wall of the pile middle hole; and pouring concrete into the holes in the piles, and forming a whole with the pile rings after the concrete is solidified.
Further, the inner side wall of the pile center hole comprises a plurality of inner annular walls which are circumferentially arranged along the circumference of the pile center hole; along the top-down direction of stake mesopore, a plurality of interior rampart is in proper order dock from top to bottom, interior rampart deviates from stake mesopore outwards slope and arranges, the bottom of interior rampart is formed with the supporting wall of arranging up, the supporting wall is arranged along the circumference of stake mesopore around.
Further, the new stirrups are abutted on the supporting wall, and a plurality of the new stirrups are arranged at intervals along the axial direction of the new main reinforcement.
Further, the bottom of the new main rib is abutted against the bottom of the pile middle hole, and the top of the new main rib extends out of the pile middle hole to form a top section arranged outside the pile middle hole; the top sections of the new main ribs are provided with positioning rings which encircle the peripheries of the top sections and are connected with the top sections;
the outer periphery of retainer plate sets up a plurality of supporting ribs, and is a plurality of the supporting rib is encircleed along the outer Zhou Yi preface interval of retainer plate, the middle part and the retainer plate fixed connection of supporting rib, the both ends of supporting rib outwards extend respectively, form and support the subaerial bracing section outside the stake mesopore, the bracing section fixed connection of adjacent supporting rib, and a plurality of be the form between the supporting rib and enclose and close the arrangement.
Further, the bottom of the inner annular wall is drilled with a plurality of embedded holes towards the pile ring, the embedded holes are obliquely arranged from top to bottom along the direction from top to bottom of the holes in the pile, the openings of the embedded holes are exposed at the periphery of the supporting wall, and the bottoms of the embedded holes penetrate through the original reinforcement cage in the pile ring;
the embedded pipe is inserted into the embedded hole, the inner end of the embedded pipe penetrates through the original reinforcement cage and is propped against the bottom of the embedded hole, the outer end of the embedded pipe is welded with the new stirrup, slurry is poured into the embedded hole, and the embedded pipe and the pile ring are integrated.
Further, the embedded pipe comprises a solid inner section, a solid outer section and a hollowed deformation section which is bent and deformed outwards under pressure, wherein the deformation section is formed between the inner section and the outer section; the deformation section comprises a plurality of metal sheets, the metal sheets are sequentially and circumferentially arranged at intervals to form a deformation space, the inner ends of the metal sheets are butted with the inner section, the outer ends of the metal sheets are butted with the outer section, and the middle parts of the metal sheets are outwards bent and protruded away from the deformation space;
after the bottom of embedded hole is supported in the inside section, warp the section and pass former steel reinforcement cage, be located former steel reinforcement cage's outside, support and press outside section towards embedded hole removal, a plurality of the sheetmetal is pressed outside bending deformation, until a plurality of behind the inside wall of embedded hole is supported in the middle part of sheetmetal, will outside section and new stirrup welded fastening, a plurality of the sheetmetal keeps the bending deformation state that presses.
Further, the lower part of the pile middle hole is outwards expanded to form an external expansion groove, the external expansion groove extends the circumferential surrounding arrangement of the pile middle hole, and the external expansion groove is filled with concrete.
Further, the outer expansion groove is internally communicated with the original steel reinforcement cage, a reinforcement ring is arranged in the outer expansion groove, the reinforcement ring is welded with the original steel reinforcement cage, and the reinforcement ring is connected with a new main reinforcement of a new steel reinforcement cage in a binding mode.
Further, a plurality of insertion holes are formed in the bottom of the pile center hole, the insertion holes are circumferentially arranged at intervals along the circumferential direction of the pile center hole, and the bottom of the new main rib is inserted into the insertion holes.
Further, the bottom of stake mesopore is equipped with the connecting plate, the connecting plate butt is in the bottom of stake mesopore, the lower part of new principal muscle passes behind the connecting plate inserts in the pilot hole, new principal muscle and connecting plate fixed connection, the periphery of connecting plate extends to the flaring in the groove.
Compared with the prior art ， The invention provides a pile formed based on the construction of a defect filling pileThe pile structure is characterized in that a newly constructed filling pile is positioned in an original steel reinforcement cage of a pile body of the defective filling pile, so that the requirement on a treatment field is low, and construction organization and management are facilitated; in the construction process, the pile ring is used as an excavation retaining wall, so that the water stopping effect is good, the strength is high, and the whole construction is safe and reliable; only a new pile with the diameter slightly smaller than that of the defect filling pile is constructed in the defect filling pile, the influence on other construction procedures on site is small, and the comprehensive construction cost is greatly reduced.
Drawings
FIG. 1 is a schematic top view of a pile body provided with an annular groove;
FIG. 2 is a schematic top view of a pile body with a pile core removed according to the present invention;
FIG. 3 is a schematic front view of the invention for casting concrete into a hole in a pile;
FIG. 4 is a schematic front view of an insertion tube provided by the present invention;
FIG. 5 is an enlarged schematic view at A in FIG. 3;
fig. 6 is a schematic structural diagram of connection between a positioning ring and a supporting rib.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The implementation of the present invention will be described in detail below with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1-6, a preferred embodiment of the present invention is provided.
The pile-in-pile structure formed based on the defect filling pile construction comprises a pile body, wherein the pile body comprises pile rings 100 which are annularly arranged, and the pile rings 100 surround a pile middle hole 105 with an open top; the pile ring 100 is internally provided with an original reinforcement cage 104, the bottom of a pile middle hole 105 extends to the defect position of a pile body, and the pile middle hole 105 is positioned in the surrounding area of the original reinforcement cage 104;
binding a new reinforcement cage in the pile middle hole 105, wherein the new reinforcement cage penetrates through the pile middle hole 105 from top to bottom, the new reinforcement cage comprises a plurality of new main reinforcements 402 and a plurality of new stirrups 401, the plurality of new main reinforcements 402 are arranged in the pile middle hole 105, the plurality of new main reinforcements 402 are annularly wound along the Zhou Xiangyi sequence interval of the pile middle hole 105, and the new main reinforcements 402 are abutted against the inner side wall of the pile middle hole 105; the pile hole 105 is filled with concrete, and the concrete is integrated with the pile ring 100 after solidification.
The pile-in-pile structure formed based on the defect filling pile construction has the advantages that the newly constructed filling pile is positioned in the original reinforcement cage 104 of the pile body of the defect filling pile, the requirements on a treatment field are low, and construction organization and management are facilitated; in the construction process, the pile ring 100 is used as an excavation retaining wall, so that the water stopping effect is good, the strength is high, and the whole construction is safe and reliable; only a new pile with the diameter slightly smaller than that of the defect filling pile is constructed in the defect filling pile, the influence on other construction procedures on site is small, and the comprehensive construction cost is greatly reduced.
In actual construction, the method can be carried out according to the following construction steps:
1) Drilling a plurality of engagement holes in the pile body from top to bottom by utilizing a water mill drill, wherein the engagement holes are sequentially engaged and circumferentially arranged to form an annular groove 102 positioned in the surrounding area of the original reinforcement cage 104; the annular groove 102 divides the pile body into a pile ring 100 and a pile core 101, and the original reinforcement cage 104 is positioned in the pile ring 100;
the pile ring 100 is used as a retaining wall, no matter the defect position is at the middle section or the bottommost end of the pile body, the formed pile ring 100 is used as the retaining wall, the influence of bad stratum and underground water in the field is effectively isolated, and the smooth pore-forming construction of the pile-in-pile is ensured; chiseling off the pile core 101, forming a pile middle hole 105 in the pile body, wherein the pile middle hole 105 is positioned in the surrounding area of the pile ring 100;
2) Repeating the operation and construction step 1) until the bottom of the hole 105 in the pile reaches the defect position of the pile body, cleaning the defect position of the pile body, and when the defect position is positioned in the pile body and the depth is large, adopting layered construction, namely repeating the operation and construction step 1), so as to realize layered chiseling of the pile core 101;
3) Binding a new reinforcement cage in the pile middle hole 105, and enabling the new reinforcement cage to penetrate through the pile middle hole 105 from top to bottom;
4) And placing the pouring guide pipe 200, pouring concrete into the pile middle hole 105 by using the pouring guide pipe 200, filling the whole pile middle hole 105 with the concrete, and forming a whole with the pile ring 100 after the concrete is solidified.
The inner side wall of the pile-in-hole 105 includes a plurality of inner annular walls 106, the inner annular walls 106 being circumferentially arranged along the pile-in-hole 105; along the top-down direction of the pile hole 105, a plurality of inner annular walls 106 are butted up and down in sequence, the inner annular walls 106 are arranged obliquely outwards away from the pile hole 105, the bottom of the inner annular walls 106 is formed with supporting walls 107 which are arranged upwards, and the supporting walls 107 are arranged circumferentially around the pile hole 105.
In actual construction, when the water mill drill drills, the drill cylinder is outwards inclined by about 15 degrees to the outer side wall, so that when the water mill drill is used for constructing each subsequent layer, the drill starting points in the same direction are always kept on the same vertical line, and shrinkage holes are not caused.
In the process of binding a new reinforcement cage in the pile middle hole 105, the new stirrups 401 are sequentially connected to the new main reinforcements 402 along the direction from bottom to top of the pile middle hole 105, the new stirrups 401 encircle the peripheries of the new main reinforcements 402 and are respectively connected with the new main reinforcements 402, the new stirrups 401 are abutted to the supporting wall 107, and the new stirrups 401 are arranged at intervals along the axial direction of the new main reinforcements 402.
In this way, in the process of binding the new reinforcement cage, the newly-bundled stirrups are put into the pile middle holes 105, and the support walls 107 are used for protecting the walls to be erected and stacked, so that all the newly-bundled stirrups are not stacked at the bottoms of the pile middle holes 105 under the action of gravity. Secondly, after the concrete is poured into the pile middle hole 105, the contact area between the concrete and the pile ring 100 is large, and the concrete and the pile ring 100 are integrated.
When a plurality of new main ribs 402 are arranged in the pile middle hole 105 and are surrounded along the Zhou Xiangyi sequence of the pile middle hole 105 at intervals, the bottom of the new main ribs 402 is abutted against the bottom of the pile middle hole 105, and the top of the new main ribs 402 extends out of the pile middle hole 105 to form a top section arranged outside the pile middle hole 105;
before the new stirrups are arranged on the new main reinforcements 402, positioning rings 601 are arranged on the top sections of the new main reinforcements 402, and the positioning rings 601 encircle the periphery of the top sections and are connected with the top sections; a plurality of supporting ribs 600 are arranged on the periphery of the positioning ring 601, the plurality of supporting ribs 600 are surrounded along the outer Zhou Yi sequence of the positioning ring 601 at intervals, the middle part of each supporting rib 600 is fixedly connected with the positioning ring 601, two ends of each supporting rib 600 extend outwards respectively to form an on-ground supporting section 602 supported outside the pile middle hole 105, the supporting sections 602 of the adjacent supporting ribs 600 are fixedly connected, and the plurality of supporting ribs 600 are arranged in a closed surrounding mode.
The positioning ring 601 can be used for fixing the interval positions of a plurality of new main reinforcements 402, so that the positions of the new main reinforcements 402 cannot be changed in the process of binding the new stirrups 401 later; secondly, the plurality of support sections 602 are utilized to play a role in supporting and positioning the plurality of new main reinforcements 402, so that the operation of binding the new stirrups 401 later is facilitated.
The bottom of inner annular wall 106 drills a plurality of embedded holes toward pile ring 100; along the direction from top to bottom of the pile middle hole 105, the embedded holes are obliquely arranged from top to bottom, the openings of the embedded holes are exposed on the periphery of the supporting wall 107, and the bottoms of the embedded holes penetrate through the original reinforcement cage 104 in the pile ring 100;
when the new stirrup 401 is placed on the supporting wall 107, the embedded pipe 500 is inserted into the embedded hole, the inner end of the embedded pipe 500 passes through the original reinforcement cage 104 and presses against the bottom of the embedded hole, the outer end of the embedded pipe 500 is welded with the new stirrup 401, grouting is performed into the embedded hole, and the embedded pipe 500 and the pile ring 100 are integrated.
Through setting up embedded hole, inlay into again and inlay pipe 500, can form an organic wholely with new steel reinforcement cage and pile ring 100, and inlay pipe 500 and pass former steel reinforcement cage 104, like this, new steel reinforcement cage forms an organic wholely with former steel reinforcement cage 104, after the downthehole concrete of pouring into of stake mesopore 105, be favorable to the bored concrete pile that newly fills and pile ring 100 to form an organic whole structure.
The embedded pipe 500 comprises a solid inner section 501, a solid outer section 504 and a hollowed-out deformation section which is pressed and bent outwards, wherein the deformation section is formed between the inner section 501 and the outer section 504; the deformation section includes a plurality of sheetmetal 502, and a plurality of sheetmetal 502 are the annular in order interval encirclement, and a plurality of sheetmetal 502 enclose to close and form deformation space 503, and the inner butt joint of sheetmetal 502 is inside section 501, and the outer butt joint of sheetmetal 502 is outside section 504, and the middle part of sheetmetal 502 deviates from deformation space 503 outwards crooked protrusion, so, when sheetmetal 502 receives the extrusion back, the outward crooked deformation of sheetmetal 502 of being convenient for.
The embedded pipe 500 is inserted into the embedded hole, when the inner section 501 abuts against the bottom of the embedded hole, the deformation section passes through the original reinforcement cage 104 and is located on the outer side of the original reinforcement cage 104, the outer section 504 is pressed against the inner side of the embedded hole, the plurality of metal sheets 502 are pressed to bend and deform outwards, and after the middle parts of the plurality of metal sheets 502 abut against the inner side wall of the embedded hole, the outer section 504 and the new stirrup 401 are welded and fixed, and the plurality of metal sheets 502 keep the pressed and bent and deformed state.
After the metal sheet 502 is bent and deformed under pressure, the deformation space 503 in the metal sheet 502 is increased, the metal sheet 502 abuts against the inner side wall of the embedded hole, and the slurry filled into the embedded hole is wrapped outside the embedded pipe 500 and is embedded into the deformation space 503 of the deformation section, so that the embedded pipe 500 and the pile ring 100 are connected into a whole, and the connection is stable, and further, a new cast-in-place pile and the pile ring 100 are connected into a whole.
And in the binding process of the new reinforcement cage, simultaneously embedding the sounding pipe according to the design requirement, and detecting the quality of the new filling pile after the curing age.
The lower portion of the pile hole 105 is outwardly expanded with outwardly expanded grooves extending circumferentially around the pile hole 105, and concrete fills the outwardly expanded grooves so that the concrete may be more tightly formed into an integral structure with the pile ring 100.
The inside of the outer expansion groove is communicated with the original steel reinforcement cage 104, a reinforcement ring is arranged in the outer expansion groove, the reinforcement ring is welded with the original steel reinforcement cage 104, and the reinforcement ring is bound and connected with a new main reinforcement 402 of a new steel reinforcement cage. By arranging the reinforcement ring in the outer expansion groove and connecting the original reinforcement cage 104 and the new reinforcement cage into a whole through the reinforcement ring, after the concrete is solidified, an integrated structure which is tightly combined with the pile ring 100 is formed.
The bottom of stake mesopore 105 is equipped with a plurality of patchholes, and a plurality of patchholes are arranged around along the circumference interval in stake mesopore 105, and the bottom of new main muscle 402 inserts in the patchhole, and the embedding of the new main muscle 402 of being convenient for is fixed a position, and in the in-process of ligature new steel reinforcement cage, new main muscle 402 can not run the position, and secondly, can closely combine new steel reinforcement cage and pile body as an organic whole.
The bottom of stake mesopore 105 is equipped with connecting plate 201, and connecting plate 201 butt is in the bottom of stake mesopore 105, inserts in the pilot hole after the lower part of new principal muscle 402 passes connecting plate 201, and new principal muscle 402 and connecting plate 201 fixed connection, the periphery of connecting plate 201 extends to the outer inslot that expands, is equipped with a plurality of through-holes in the connecting plate 201, is equipped with the in-process of pouring concrete, is convenient for concrete to pass connecting plate 201, arranges in between connecting plate 201 and the bottom of stake mesopore 105, utilizes connecting plate 201 to realize the integration to a plurality of new principal muscle 402 and connects, and connecting plate 201 imbeds in expanding the groove outward, can combine new steel reinforcement cage and pile ring 100 as an organic wholely.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (5)
1. The pile-in-pile structure formed based on the defect cast-in-place pile construction is characterized by comprising a pile body, wherein the pile body comprises pile rings which are annularly arranged, and pile holes with open tops are formed in the pile rings in a surrounding mode; the pile ring is internally provided with an original reinforcement cage, and the bottom of the pile middle hole extends to the defect position of the pile body;
the novel reinforcement cage penetrates through the pile middle hole from top to bottom, the novel reinforcement cage comprises a plurality of novel main reinforcements and a plurality of novel stirrups, the novel main reinforcements are arranged in the pile middle hole, the novel main reinforcements are annularly encircling along the Zhou Xiangyi sequence interval of the pile middle hole, and the novel main reinforcements are abutted against the inner side wall of the pile middle hole; pouring concrete into the holes in the piles, wherein the concrete is integrated with pile rings after solidification;
the inner side wall of the pile center hole comprises a plurality of inner annular walls which are circumferentially arranged along the circumferential direction of the pile center hole; along the direction from top to bottom of the pile middle hole, a plurality of inner annular walls are sequentially butted up and down, the inner annular walls are outwards inclined away from the pile middle hole, supporting walls which are upwards arranged are formed at the bottoms of the inner annular walls, and the supporting walls are circumferentially arranged along the circumference of the pile middle hole;
the novel stirrups are abutted on the supporting wall, and a plurality of the novel stirrups are arranged at intervals along the axial direction of the novel main reinforcement;
the bottom of the new main rib is abutted against the bottom of the pile middle hole, and the top of the new main rib extends out of the pile middle hole to form a top section arranged outside the pile middle hole; the top sections of the new main ribs are provided with positioning rings which encircle the peripheries of the top sections and are connected with the top sections;
the outer periphery of the positioning ring is provided with a plurality of supporting ribs, the plurality of supporting ribs are surrounded along the outer Zhou Yi sequence of the positioning ring at intervals, the middle parts of the supporting ribs are fixedly connected with the positioning ring, the two ends of each supporting rib extend outwards respectively to form an on-ground supporting section supported outside a pile middle hole, the supporting sections of the adjacent supporting ribs are fixedly connected, and the plurality of supporting ribs are arranged in a closed surrounding manner;
the bottom of the inner annular wall is drilled with a plurality of embedded holes towards the pile ring, the embedded holes are obliquely arranged from top to bottom along the direction from top to bottom of the holes in the pile, the openings of the embedded holes are exposed on the periphery of the supporting wall, and the bottoms of the embedded holes penetrate through the original reinforcement cage in the pile ring;
an embedded pipe is inserted into the embedded hole, the inner end of the embedded pipe penetrates through the original reinforcement cage and is propped against the bottom of the embedded hole, the outer end of the embedded pipe is welded with the new stirrup, slurry is poured into the embedded hole, and the embedded pipe and the pile ring are integrated;
the embedded pipe comprises a solid inner section, a solid outer section and a hollowed deformation section which is bent and deformed outwards under pressure, wherein the deformation section is formed between the inner section and the outer section; the deformation section comprises a plurality of metal sheets, the metal sheets are sequentially and circumferentially arranged at intervals to form a deformation space, the inner ends of the metal sheets are butted with the inner section, the outer ends of the metal sheets are butted with the outer section, and the middle parts of the metal sheets are outwards bent and protruded away from the deformation space;
after the bottom of embedded hole is supported in the inside section, warp the section and pass former steel reinforcement cage, be located former steel reinforcement cage's outside, support and press outside section towards embedded hole removal, a plurality of the sheetmetal is pressed outside bending deformation, until a plurality of behind the inside wall of embedded hole is supported in the middle part of sheetmetal, will outside section and new stirrup welded fastening, a plurality of the sheetmetal keeps the bending deformation state that presses.
2. A pile-in-pile structure formed on the basis of a defective cast-in-place pile construction according to claim 1, wherein the lower portion of the pile-in-hole is outwardly expanded with outwardly expanding grooves extending circumferentially around the pile-in-hole, and the concrete fills the outwardly expanding grooves.
3. The pile-in-pile structure formed on the basis of the construction of the defect cast-in-place pile according to claim 2, wherein the inside of the outer expansion groove is communicated with an original steel reinforcement cage, a reinforcement ring is arranged in the outer expansion groove, the reinforcement ring is welded with the original steel reinforcement cage, and the reinforcement ring is in binding connection with a new main reinforcement of a new steel reinforcement cage.
4. A pile-in-pile structure formed on the basis of a defective cast-in-place pile construction according to claim 3, wherein the bottom of the pile-in-hole is provided with a plurality of insertion holes, a plurality of the insertion holes being circumferentially arranged at intervals along the circumference of the pile-in-hole, and the bottom of the new main rib being inserted into the insertion holes.
5. The pile-in-pile structure formed by the construction of the defect-based bored pile according to claim 4, wherein a connecting plate is arranged at the bottom of the pile-in-hole, the connecting plate is abutted against the bottom of the pile-in-hole, the lower part of the new main rib penetrates through the connecting plate and then is inserted into the insertion hole, the new main rib is fixedly connected with the connecting plate, and the periphery of the connecting plate extends into the flaring tank.
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| CN202111543186.1A CN114277789B (en) | 2021-12-16 | 2021-12-16 | Pile-in-pile structure formed based on defect filling pile construction |
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| CN202111543186.1A CN114277789B (en) | 2021-12-16 | 2021-12-16 | Pile-in-pile structure formed based on defect filling pile construction |
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| CN114277789A CN114277789A (en) | 2022-04-05 |
| CN114277789B true CN114277789B (en) | 2023-05-23 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11323924A (en) * | 1998-05-19 | 1999-11-26 | Kajima Corp | Execution method for cast-in-place pile |
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| KR100430342B1 (en) * | 2001-07-25 | 2004-05-04 | 원 회 양 | A formative installation and construction method of concrete file that projection is protruded into a radial shape |
| CN108301401B (en) * | 2018-01-10 | 2019-12-24 | 深圳市工勘岩土集团有限公司 | Construction method for treating defect section of cast-in-place pile by utilizing water grinding drill |
| CN110685275A (en) * | 2019-09-18 | 2020-01-14 | 深圳市综合交通设计研究院有限公司 | New and old combined foundation pile in high-groundwater-level complex construction environment and in-situ pile repairing method |
| CN111501813A (en) * | 2020-04-13 | 2020-08-07 | 浙江厦泰基础工程有限公司 | High bearing platform building pile foundation |
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| JPH11323924A (en) * | 1998-05-19 | 1999-11-26 | Kajima Corp | Execution method for cast-in-place pile |
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