CN116733048A - Pile splicing structure of soft soil foundation filling pile and construction method thereof - Google Patents
Pile splicing structure of soft soil foundation filling pile and construction method thereof Download PDFInfo
- Publication number
- CN116733048A CN116733048A CN202311001068.7A CN202311001068A CN116733048A CN 116733048 A CN116733048 A CN 116733048A CN 202311001068 A CN202311001068 A CN 202311001068A CN 116733048 A CN116733048 A CN 116733048A
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- pile
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- pile casing
- steel pile
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- 239000002689 soil Substances 0.000 title claims abstract description 47
- 238000010276 construction Methods 0.000 title claims abstract description 24
- 239000004567 concrete Substances 0.000 claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims description 162
- 239000010959 steel Substances 0.000 claims description 162
- 239000004568 cement Substances 0.000 claims description 35
- 239000011150 reinforced concrete Substances 0.000 claims description 35
- 238000009412 basement excavation Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
-
- 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
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to the technical field of pile foundation construction, in particular to a pile splicing structure of a soft soil foundation filling pile and a construction method thereof. The pile splicing structure and the construction method of the soft soil foundation filling pile can reduce the excavation of a large amount of soil body of the soft soil foundation, ensure the safety of construction space and personnel, and ensure the accurate positioning of the pile body and the vibrating pouring quality of concrete.
Description
Technical Field
The invention relates to a pile extension structure of a soft soil foundation filling pile and a construction method thereof, belonging to the technical field of pile foundation construction.
Background
Super high-rise and exhibition venue buildings are built on soft soil foundations at present, and super-long filling piles are widely adopted as foundation forms. In the pile foundation construction process, poor soft soil geological conditions and pile body length can lead to the hole cleaning to be difficult, the pile head slurry is too thick, the pile top elevation or pile top concrete strength can not meet the design requirement, meanwhile, the pile is broken due to the influence of the concrete pouring process, pile extension construction is required, and the strength of the pile foundation is guaranteed.
The existing pile-grouting pile-splicing technology is difficult to construct aiming at pile-splicing parts positioned in soft soil or silt stratum, and the soft soil geology does not have the condition of adopting large excavation, or the cost for curing soft soil foundation is high, and the construction period is long.
Disclosure of Invention
The invention provides a pile-splicing structure of a soft soil foundation filling pile and a construction method thereof, which are used for solving the problems that the pile-splicing is difficult to be carried out in a large excavation mode on the soft soil foundation in the prior art, and the pile-splicing cost is high and the construction period is long after the soft soil foundation is solidified.
The invention is realized in the following way:
the construction method of the pile extension structure of the soft soil foundation filling pile is characterized by comprising the following steps of:
s1, positioning an original reinforced concrete cast-in-place pile, and excavating to a pile top position after pile extension in design;
s2, breaking pile body concrete on the original reinforced concrete cast-in-place pile, wherein the strength of the pile body concrete cannot meet the design requirement;
s3, burying a first steel pile casing to the pile top position after pile splicing in design, excavating soil in the first steel pile casing, and chiseling pile body concrete with insufficient strength in the first steel pile casing;
s4: burying a second steel pile casing into the first steel pile casing, wherein the radius of the second steel pile casing is smaller than that of the first steel pile casing, the second steel pile casing is arranged below the top of the first steel pile casing and above half of the pile body, soil in the second steel pile casing is excavated, and pile body concrete with insufficient strength in the second steel pile casing is chiseled;
s5: burying a third steel pile casing into the second steel pile casing, wherein the radius of the third steel pile casing is smaller than that of the second steel pile casing, the third steel pile casing is arranged at a position below the top of the second steel pile casing and above half of the pile body, soil in the third steel pile casing is excavated, and pile body concrete with insufficient strength in the third steel pile casing is chiseled to a pile connecting position of the original reinforced concrete filling pile;
s6: welding the pile body longitudinal bars and the spiral stirrups which are connected in length on the pile body longitudinal bars at the pile connecting position of the original reinforced concrete cast-in-place pile;
s7: and (3) lifting the cement-discharging pile casing to the position, in the third steel pile casing, of the pile splicing of the original reinforced concrete cast-in-place pile, wherein soil is backfilled between the cement-discharging pile casing and the first steel pile casing, between the cement-discharging pile casing and the second steel pile casing, between the cement-discharging pile casing and the third steel pile casing, and after the cement pile casing is poured, the cement pile casing is lifted away from the first steel pile casing, the second steel pile casing and the third steel pile casing.
The pile splicing structure of the soft soil foundation filling pile is characterized by comprising an original reinforced concrete filling pile, wherein pile body longitudinal ribs are arranged on the original reinforced concrete filling pile;
the steel pile casing group comprises a first steel pile casing, a second steel pile casing and a third steel pile casing, wherein the diameter of the first steel pile casing is larger than that of the second steel pile casing, the diameter of the second steel pile casing is larger than that of the third steel pile casing, the third steel pile casing is connected with the pile splicing position of the original reinforced concrete cast-in-place pile and is larger than that of the original reinforced concrete cast-in-place pile, the upper half part of the third steel pile casing is arranged in the second steel pile casing, the upper half part of the second steel pile casing is arranged in the first steel pile casing, and steel pile casing lifting lugs are arranged on the steel pile casing group;
the cement pile casing is connected to the pile splicing position of the original reinforced concrete cast-in-place pile and is arranged in the third steel pile casing;
backfilling soil bodies, wherein the backfilling soil bodies are backfilled between the steel pile casing group and the cement pile casing;
the spiral stirrup is arranged in the cement casing;
an extended pile body longitudinal rib which is arranged in the cement pile casing;
and the new pile body concrete is poured into the cement pile casing.
Further, the inner diameter of the cement pile casing is equal to the diameter of the original reinforced concrete bored concrete pile.
Furthermore, the overlapping length of the upper and lower adjacent steel casings of the steel casing group is one half to two thirds of the length of the steel casings, so that the strength of the protection wall is ensured to meet the safety construction requirement.
Further, the cement casing radius is 65% -75% of the first steel casing radius.
Further, the radius of the first steel casing is R1, the radius of the second steel casing is R2, and the radius of the third steel casing is R3, wherein 0.95R1 is more than or equal to R2 is more than or equal to 0.90R1,0.98R2, R3 is more than or equal to 0.92R2, so that enough construction space is ensured.
In practical product applications, those skilled in the art can select different steel casing and cement casing section numbers according to practical requirements, and will not be further described herein.
The invention adopts the technical proposal and has the following advantages:
1. the pile splicing device is simple in construction, a plurality of steel pile casings are arranged from top to bottom to serve as a wall protection structure, the number of the pile casings can be set according to specific pile splicing positions, a large amount of soil body is reduced in excavation, pile splicing construction is carried out rapidly, operation space and safety construction of constructors are guaranteed, and the technical problem that large excavation pile splicing is difficult to carry out on a soft soil foundation is solved.
2. According to the invention, the cement pile casing is arranged as a pouring template of the cast-in-place pile, and soil is backfilled between the cement pile casing and the steel pile casing, so that the accurate positioning of the pile body and the vibrating pouring quality of concrete are ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a sectional view of a pile extension structure of a soft soil foundation cast-in-place pile according to an embodiment of the present invention;
fig. 2 is a perspective view of a pile extension structure of a soft soil foundation cast-in-place pile according to an embodiment of the present invention;
reference numerals:
1-a steel pile casing group; 11-a first steel casing; 12-a second steel casing; 13-a third steel casing; 2-pile body longitudinal ribs; 3-original reinforced concrete cast-in-place piles; 4, backfilling soil; 5-spiral stirrups; 6, lengthening pile body longitudinal ribs; 7-new pile body concrete; 8-cement pile casing; 9-steel casing lifting lugs.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
In the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1-2, a construction method of a pile extension structure of a soft soil foundation cast-in-place pile is characterized by comprising the following steps:
s1, positioning an original reinforced concrete filling pile 3, and excavating to a pile top position after pile splicing in design;
s2, breaking pile body concrete on the original reinforced concrete cast-in-place pile 3, wherein the strength of the pile body concrete cannot meet the design requirement;
s3, burying a first steel pile casing 11 to the pile top position after pile extension in the design, controlling the perpendicularity of the first steel pile casing 11 in the process, excavating soil in the first steel pile casing 11 and chiseling pile body concrete with insufficient strength in the first steel pile casing 11;
s4: burying a second steel casing 12 to a position below the top of the first steel casing 11 and above half of the casing body, wherein the diameter of the second steel casing 12 is 50mm smaller than that of the first steel casing 11, controlling the verticality of the second steel casing 12 in the process, excavating soil in the second steel casing 12 and chiseling pile body concrete with insufficient strength in the second steel casing 12;
s5: burying a third steel pile casing 13 to a position below the top of the second steel pile casing 12 and above half of the pile body, wherein the diameter of the third steel pile casing 13 is 50mm smaller than that of the second steel pile casing 12, controlling the verticality of the third steel pile casing 13 in the process, excavating soil in the third steel pile casing 13, and chiseling pile body concrete with insufficient strength in the third steel pile casing 13 to a pile connecting position of the original reinforced concrete cast-in-place pile 3;
s6: the pile body longitudinal ribs 2 at the pile splicing position of the original reinforced concrete bored concrete pile 3 are welded with the pile body longitudinal ribs 6 and the spiral stirrups 5;
s7: and (3) lifting the cement pile casing 8 to the third steel pile casing 13, connecting the pile splicing position of the original reinforced concrete bored concrete pile 3, backfilling soil bodies 4 between the cement pile casing 8 and the first steel pile casing 11, the second steel pile casing 12 and the third steel pile casing 13, pouring new pile body concrete 7 into the cement pile casing 8, and lifting away the first steel pile casing 11, the second steel pile casing 12 and the third steel pile casing 13.
Referring to fig. 1-2, a pile extension structure of a soft soil foundation cast-in-place pile is characterized by comprising an original reinforced concrete cast-in-place pile 3, wherein pile body longitudinal ribs 2 are arranged on the original reinforced concrete cast-in-place pile 3;
the steel pile casing group 1, the steel pile casing group 1 comprises a first steel pile casing 11, a second steel pile casing 12 and a third steel pile casing 13, the diameter of the first steel pile casing 11 is 50mm larger than that of the second steel pile casing 12, the diameter of the second steel pile casing 12 is 50mm larger than that of the third steel pile casing 13, the third steel pile casing 13 is connected with the pile splicing position of the original steel reinforced concrete cast-in-place pile 3 and is 500mm larger than that of the original steel reinforced concrete cast-in-place pile 3, the construction space of workers is guaranteed, the upper half part of the third steel pile casing 13 is arranged in the second steel pile casing 12, the upper half part of the second steel pile casing 12 is arranged in the first steel pile casing 11, and steel pile casing lifting lugs 9 are arranged on the steel pile casing group 1;
the cement pile casing 8 is connected to the pile splicing position of the original reinforced concrete cast-in-place pile 3 and is arranged in the third steel pile casing 13, and the diameter of the cement pile casing 8 is the same as that of the original reinforced concrete cast-in-place pile 3;
backfill soil body 4, wherein the backfill soil body 4 is backfilled between the steel pile casing group 1 and the cement pile casing 8;
the spiral stirrup 5 is arranged in the cement casing 8;
an extended pile longitudinal rib 6, wherein the extended pile longitudinal rib 6 is arranged in the cement pile casing 8;
and the new pile body concrete 7 is poured into the cement pile casing 8.
Further, the inner diameter of the cement casing 8 is equal to the diameter of the original reinforced concrete bored concrete pile 3.
Furthermore, the overlapping length of the upper and lower adjacent steel casings of the steel casing group 1 is one half to two thirds of the length of the steel casings, so that the strength of the protection wall is ensured to meet the safety construction requirement.
Further, the radius of the cement casing 8 is 65% -75% of the radius of the first steel casing 11.
Further, the radius of the first steel casing 11 is R1, the radius of the second steel casing 12 is R2, and the radius of the third steel casing 13 is R3, wherein 0.95R1 is greater than or equal to R2 and greater than or equal to 0.90R1,0.98R2 and greater than or equal to R3 and greater than or equal to 0.92R2, so as to ensure enough construction space.
In practical product applications, those skilled in the art can select different steel casing and cement casing section numbers according to practical requirements, and will not be further described herein.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The construction method of the pile extension structure of the soft soil foundation filling pile is characterized by comprising the following steps of:
s1, positioning an original reinforced concrete filling pile (3), and excavating to a pile top position after pile splicing in design;
s2, breaking pile body concrete on the original reinforced concrete cast-in-place pile (3) with strength which cannot meet design requirements;
s3, burying a first steel pile casing (11) to the pile top position after pile splicing in design, excavating soil in the first steel pile casing (11) and chiseling pile body concrete with insufficient strength in the first steel pile casing (11);
s4: burying a second steel pile casing (12) into the first steel pile casing (11), wherein the radius of the second steel pile casing (12) is smaller than that of the first steel pile casing (11), the second steel pile casing (12) is arranged at a position below the top of the first steel pile casing (11) and above half of the pile body, soil in the second steel pile casing (12) is excavated, and pile body concrete with insufficient strength in the second steel pile casing (12) is chiseled;
s5: burying a third steel pile casing (13) into the second steel pile casing (12), wherein the radius of the third steel pile casing (13) is smaller than that of the second steel pile casing (12), the third steel pile casing (13) is arranged at a position below the top of the second steel pile casing (12) and above half of the pile body, soil in the third steel pile casing (13) is excavated, and pile body concrete with insufficient strength in the third steel pile casing (13) is chiseled to a pile splicing position of the original reinforced concrete cast-in-place pile (3);
s6: a pile body longitudinal rib (6) and a spiral stirrup (5) which are connected in length are welded on a pile body longitudinal rib (2) at a pile connecting position of the original reinforced concrete bored concrete pile (3);
s7: hanging cement pile casing (8) to be connected with pile splicing positions of original reinforced concrete cast-in-place piles (3) in third steel pile casing (13) hanging cement pile casing (8) and first steel pile casing (11), second steel pile casing (12) backfill soil body (4) between third steel pile casing (13), pour new pile body concrete (7) and go into behind cement pile casing (8) hang away first steel pile casing (11), second steel pile casing (12) third steel pile casing (13).
2. The pile splicing structure of the soft soil foundation filling pile is characterized by comprising an original reinforced concrete filling pile (3), wherein pile body longitudinal ribs (2) are arranged on the original reinforced concrete filling pile (3);
the steel pile casing group (1), steel pile casing group (1) includes first steel pile casing (11), second steel pile casing (12), third steel pile casing (13), the diameter of first steel pile casing (11) is greater than second steel pile casing (12), the diameter of second steel pile casing (12) is greater than third steel pile casing (13), third steel pile casing (13) with pile extension position connection of former reinforced concrete bored concrete pile (3) and diameter is greater than former reinforced concrete bored concrete pile (3), the first half of third steel pile casing (13) is located in second steel pile casing (12), the first half of second steel pile casing (12) is located in first steel pile casing (11), be equipped with steel pile casing lug (9) on steel pile casing group (1);
the cement pile casing (8) is connected to the pile splicing position of the original reinforced concrete cast-in-place pile (3) and is arranged in the third steel pile casing (13);
the backfill soil body (4), the backfill soil body (4) is backfilled between the steel pile casing group (1) and the cement pile casing (8);
the spiral stirrup (5) is arranged in the cement casing (8);
an extended pile body longitudinal rib (6), wherein the extended pile body longitudinal rib (6) is arranged in the cement pile casing (8);
and the new pile body concrete (7) is poured into the cement pile casing (8).
3. A soft foundation bored pile extension structure according to claim 2, wherein the inner diameter of the cement casing (8) is equal to the diameter of the original reinforced concrete bored pile (3).
4. A soft soil foundation bored pile extension structure according to claim 2, wherein the overlapping length of two adjacent steel casings of the steel casing group (1) is one-half to two-thirds of the length of the steel casings.
5. A soft foundation bored pile extension structure according to claim 2, wherein the cement casing (8) has a radius of 65% -75% of the radius of the first steel casing (11).
6. A soft soil foundation bored concrete pile extension structure according to claim 2, wherein the radius of the first steel casing (11) is R1, the radius of the second steel casing (12) is R2, and the radius of the third steel casing (13) is R3, wherein 0.95R1 is equal to or more than R2 and equal to or more than 0.90R1,0.98R2 and equal to or more than R3 and equal to or more than 0.92R2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311001068.7A CN116733048A (en) | 2023-08-10 | 2023-08-10 | Pile splicing structure of soft soil foundation filling pile and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311001068.7A CN116733048A (en) | 2023-08-10 | 2023-08-10 | Pile splicing structure of soft soil foundation filling pile and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN116733048A true CN116733048A (en) | 2023-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311001068.7A Pending CN116733048A (en) | 2023-08-10 | 2023-08-10 | Pile splicing structure of soft soil foundation filling pile and construction method thereof |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8516419D0 (en) * | 1985-06-28 | 1985-07-31 | Taylor Woodrow Const Ltd | Repairing concrete piles |
| WO1998050640A1 (en) * | 1997-05-07 | 1998-11-12 | Amog Technologies Pty. Ltd. | Repair of structural members |
| CN102966096A (en) * | 2012-11-30 | 2013-03-13 | 天津第三市政公路工程有限公司 | Construction method for double pile casings of large-diameter cast-in-situ bored pile |
| DE102018110487A1 (en) * | 2017-06-26 | 2018-12-27 | JAKON System-Elemente GmbH | Deep foundation pile and method |
| CN111021356A (en) * | 2019-12-26 | 2020-04-17 | 上海隧道工程有限公司 | Method and device for recovering steel casing of mudflat pile foundation |
| CN211849654U (en) * | 2019-12-31 | 2020-11-03 | 浙江大学城市学院 | Bridge pile foundation reinforced structure |
| CN114232607A (en) * | 2021-11-27 | 2022-03-25 | 中铁二十二局集团第一工程有限公司 | Frozen soil section drilled pile construction process |
| CN216194709U (en) * | 2021-11-02 | 2022-04-05 | 河北卓晨岩土工程有限公司 | Pile foundation construction is with protecting a section of thick bamboo |
| CN114657974A (en) * | 2022-04-13 | 2022-06-24 | 中建三局第二建设工程有限责任公司 | Method for quickly splicing cast-in-place pile under complex geological condition |
| CN114855789A (en) * | 2022-03-25 | 2022-08-05 | 标力建设集团有限公司 | Construction method for broken pile treatment of engineering pile in soft soil area |
| CN218757453U (en) * | 2022-11-21 | 2023-03-28 | 中铁六局集团天津铁路建设有限公司 | Pile foundation construction is with protecting a section of thick bamboo device |
-
2023
- 2023-08-10 CN CN202311001068.7A patent/CN116733048A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8516419D0 (en) * | 1985-06-28 | 1985-07-31 | Taylor Woodrow Const Ltd | Repairing concrete piles |
| WO1998050640A1 (en) * | 1997-05-07 | 1998-11-12 | Amog Technologies Pty. Ltd. | Repair of structural members |
| CN102966096A (en) * | 2012-11-30 | 2013-03-13 | 天津第三市政公路工程有限公司 | Construction method for double pile casings of large-diameter cast-in-situ bored pile |
| DE102018110487A1 (en) * | 2017-06-26 | 2018-12-27 | JAKON System-Elemente GmbH | Deep foundation pile and method |
| CN111021356A (en) * | 2019-12-26 | 2020-04-17 | 上海隧道工程有限公司 | Method and device for recovering steel casing of mudflat pile foundation |
| CN211849654U (en) * | 2019-12-31 | 2020-11-03 | 浙江大学城市学院 | Bridge pile foundation reinforced structure |
| CN216194709U (en) * | 2021-11-02 | 2022-04-05 | 河北卓晨岩土工程有限公司 | Pile foundation construction is with protecting a section of thick bamboo |
| CN114232607A (en) * | 2021-11-27 | 2022-03-25 | 中铁二十二局集团第一工程有限公司 | Frozen soil section drilled pile construction process |
| CN114855789A (en) * | 2022-03-25 | 2022-08-05 | 标力建设集团有限公司 | Construction method for broken pile treatment of engineering pile in soft soil area |
| CN114657974A (en) * | 2022-04-13 | 2022-06-24 | 中建三局第二建设工程有限责任公司 | Method for quickly splicing cast-in-place pile under complex geological condition |
| CN218757453U (en) * | 2022-11-21 | 2023-03-28 | 中铁六局集团天津铁路建设有限公司 | Pile foundation construction is with protecting a section of thick bamboo device |
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Application publication date: 20230912 |