CN111455984B - Pile foundation fender pile and construction method - Google Patents
Pile foundation fender pile and construction method Download PDFInfo
- Publication number
- CN111455984B CN111455984B CN202010323549.XA CN202010323549A CN111455984B CN 111455984 B CN111455984 B CN 111455984B CN 202010323549 A CN202010323549 A CN 202010323549A CN 111455984 B CN111455984 B CN 111455984B
- Authority
- CN
- China
- Prior art keywords
- pile
- reinforcement cage
- concrete base
- plate
- reinforcement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Abstract
A pile foundation pile protector comprises a pile protector rod, a concrete base and a reinforcement cage, wherein the reinforcement cage is of a rectangular structure with openings at two ends, the reinforcement cage is vertically embedded in pile protector pits around the concrete base, and the concrete base is arranged in the reinforcement cage; the steel reinforcement cage is formed by binding main reinforcements and stirrups through binding wires, a V-shaped steel reinforcement is further arranged between every two adjacent main reinforcements, one section of the V-shaped steel reinforcement is fixed on the steel reinforcement cage through binding wires, and the other section of the V-shaped steel reinforcement inclines to extend upwards to be in contact with the side wall of the pile protection pit. The pile foundation pile protection construction method comprises the following steps: 1) prefabricating a guard pile; 2) binding a reinforcement cage; 3) excavating a pile protection pit; 4) backfilling fine sand; 5) installing a reinforcement cage; 6) installing a concrete base; 7) and tamping the backfilled soil body. By adopting the structure and the method, the stability of the pile protector can be improved, the condition that the pile protector is inclined and unstable is avoided, meanwhile, higher stability can be ensured on the site with more frequent mechanical and manual activities, and favorable conditions are provided for pile foundation construction.
Description
Technical Field
The invention relates to the field of pile foundation construction, in particular to a pile foundation pile and a construction method thereof.
Background
In bridge construction, a pile foundation is used as a foundation structure, and the construction quality of the pile foundation is always the key point of engineering attention. In order to ensure that a pile foundation reinforcement cage is centered, four guard piles are adopted to lead a cross line to mark a drilling central point in engineering, four mutually perpendicular reinforcements are bound on the top of the reinforcement cage by using a thread rope to form a cross central point of the reinforcement cage, and the offset error of the reinforcement cage is within a required range by checking the central point of the guard pile cross line and the cross central point of the reinforcement cage. On the construction site, materials such as wood poles, steel bars and the like are often adopted to directly make the guard piles, and the guard piles are stable to a certain depth by being inserted into the soil layer, so that the guard piles have the advantages of simplicity, convenience, high efficiency, economy and practicability. However, the pile protector has certain defects, the bearing capacity of the pile bottom of the part of the pile protector inserted into the soil layer is insufficient, the friction force of the pile body is small, the stability of the part of the pile body of the pile protector exposed out of the soil layer is poor, and the centering precision of the reinforcement cage is affected by the destabilization caused by the disturbance of machinery and workers during construction.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a pile foundation fender pile and a construction method, which can improve the stability of the pile foundation fender pile, avoid the condition of inclination instability of the pile foundation fender pile, ensure higher stability on the site with frequent mechanical and manual activities and provide favorable conditions for pile foundation construction.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a pile foundation fender pile, is including protecting stake pole and concrete foundation, characterized by: the concrete pile protection device is characterized by further comprising a reinforcement cage, wherein the reinforcement cage is of a rectangular structure with two open ends, the reinforcement cage is vertically embedded in pile protection pits around the concrete base, and the concrete base is arranged in the reinforcement cage;
the steel reinforcement cage form through tying the silk by main muscle and stirrup, still be equipped with "V" shape reinforcing bar between two adjacent main muscle, one of them section of "V" shape reinforcing bar is fixed on the steel reinforcement cage through tying the silk, another section slope upwards extends to and protects a hole lateral wall contact.
In the preferred scheme, a sand layer is backfilled on the bottom surface of the pile protection pit, and the lower end of a main rib of the steel reinforcement cage is inserted into the sand layer.
In the preferred scheme, the bottom of the concrete base is provided with a supporting plate, the lower end of the pile protection rod penetrates through the concrete base and is fixedly connected with the supporting plate, and the bottom surface of the supporting plate is provided with an inverted cone.
In the preferred scheme, the pile protection rod is in threaded connection with the supporting plate, external threads are arranged on the outer wall of the lower end of the pile protection rod, and a matched threaded hole is formed in the central point of the top surface of the supporting plate.
A pile foundation pile protection construction method comprises the following steps:
1) prefabricating the pile protecting rod and the concrete base by using a special mould;
2) prefabricating and binding a reinforcement cage;
3) excavating a pile protection pit on site;
4) backfilling fine sand on the bottom surface of the excavated pile protection pit to form a sand layer;
5) installing a reinforcement cage, ensuring that main reinforcements of the reinforcement cage are inserted into the sand layer, and enabling the end parts of V-shaped reinforcements on the periphery of the reinforcement cage to be in contact with the side wall of the pile protection pit;
6) mounting a concrete base into the reinforcement cage to enable the reinforcement cage and the concrete base to be mutually embedded;
7) and tamping the backfilled soil body.
In a preferred scheme, the special mold consists of a group of first side plates, a group of second side plates and a bottom plate;
vertical convex strips are arranged on two sides of the first side plate, and vertical grooves matched with the vertical convex strips are arranged on two sides of the inner side surface of the second side plate;
two parallel horizontal grooves are formed in two sides of the top surface of the bottom plate, and horizontal convex strips matched with the horizontal grooves are formed in the bottom of the second side plate;
the middle part of the bottom plate is provided with an opening with the same size as the support plate.
In the preferred scheme, vertical sand grip upper end and first curb plate top surface parallel and level, vertical sand grip lower extreme is higher than first curb plate bottom surface, vertical groove length is the same with vertical sand grip, vertical groove upper end and second curb plate top surface parallel and level, vertical groove lower extreme is higher than second curb plate bottom surface.
In a preferred scheme, the opening is step-shaped, and the step size is the same as the size of the support plate.
The pile foundation pile and the construction method provided by the invention have the following beneficial effects by adopting the method:
(1) the concrete base is arranged at the lower end of the pile protection rod, so that the bearing capacity of the pile bottom of the part inserted into the soil layer and the friction force of the pile body can be improved, and the instability probability of the pile protection rod is reduced;
(2) the arranged reinforcement cage can enhance the connection stability between the concrete foundation and the surrounding soil body, and avoid the condition that the guard pile deviates due to the loosening of the soil body caused by frequent movement of mechanical equipment;
(3) the sand layer backfill of the pile protection pit bottom is carried out before the steel reinforcement cage and the concrete base are installed, so that the pit bottom leveling is facilitated, and the condition that the pile protection is inclined after being installed due to difficulty in leveling under the condition of a special soil layer is avoided;
(4) the precast concrete foundation and the pile protection rod are precast by using a special die, so that the precast concrete foundation and the pile protection rod can be quickly disassembled;
(5) the later stage of device is demolishd the convenience, and steel reinforcement cage, fender pile pole and backup pad all can recycle.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a schematic sectional view of a pile protection pit after a reinforcement cage is installed.
Fig. 2 is a schematic cross-sectional view of a pile protection pit after a reinforcement cage and a pile protection are installed.
Fig. 3 is a schematic view of the connection structure of the reinforcement cage and the V-shaped reinforcement. (three sides with the same structure of the steel reinforcement cage are omitted)
Fig. 4 is a schematic view of a pile construction of the present invention.
Fig. 5 is a schematic structural view of the special mold of the present invention.
Fig. 6 is a schematic structural view of a first side plate in the special mold of the present invention.
FIG. 7 is a schematic diagram of a second side plate structure in the special mold of the present invention.
FIG. 8 is a schematic view of the structure of the bottom plate in the special mold of the present invention.
In the figure: pile protection pit 1, sand bed 2, steel reinforcement cage 3, main muscle 301, stirrup 302, pile protection pole 4, concrete foundation 5, "V" shape reinforcing bar 6, backup pad 7, back taper 701, special mould 8, first curb plate 9, vertical sand grip 901, second curb plate 10, vertical recess 1001, horizontal sand grip 1002, bottom plate 11, horizontal recess 111, opening 112, step 113.
Detailed Description
Example 1:
as shown in fig. 1-3, a pile foundation pile comprises a pile protection rod 4, a concrete base 5 and a reinforcement cage 3, wherein the reinforcement cage 3 is of a rectangular structure with openings at two ends, the reinforcement cage 3 is vertically embedded in a pile protection pit 1 around the concrete base 5, and the concrete base 5 is arranged in the reinforcement cage 3;
reinforcing cage 3 form through the ligature silk by main muscle 301 and stirrup 302, still be equipped with "V" shape reinforcing bar 6 between two adjacent main muscle 301, one of them section of "V" shape reinforcing bar 6 is fixed on reinforcing cage 3 through the ligature silk, another section slope upwards extend to with the contact of pile protection hole 1 lateral wall.
In a preferable scheme, a sand layer 2 is backfilled on the bottom surface of the pile protection pit 1, and the lower end of a main reinforcement 301 of the reinforcement cage 3 is inserted into the sand layer 2.
Preferably, as shown in fig. 4, a support plate 7 is disposed at the bottom of the concrete base 5, the lower end of the pile protection rod 4 penetrates through the concrete base 5 and is fixedly connected with the support plate 7, and an inverted cone 701 is disposed on the bottom surface of the support plate 7.
In the preferred scheme, fender pile pole 4 and backup pad 7 between adopt threaded connection, the outer wall of 4 lower extremes of fender pile pole is equipped with the external screw thread, is equipped with supporting screw hole on the 7 top surface central point positions of backup pad.
Example 2:
on the basis of the embodiment 1, the following construction method is adopted to carry out pile foundation pile protection construction:
1) prefabricating the pile protecting rod 4 and the concrete base 5 by using a special die 8;
2) prefabricating and binding a reinforcement cage 3;
3) excavating a pile protection pit 1 on site;
4) backfilling fine sand on the bottom surface of the excavated pile protection pit 1 to form a sand layer 2;
5) installing a reinforcement cage 3, ensuring that a main reinforcement 301 of the reinforcement cage 3 is inserted into the sand layer 2, and enabling the end parts of V-shaped reinforcements 6 on the periphery of the reinforcement cage 3 to be in contact with the side wall of the pile protection pit 1;
6) mounting a concrete base 5 into the reinforcement cage 3 to enable the reinforcement cage 3 and the concrete base 5 to be mutually embedded;
7) and tamping the backfilled soil body.
Example 3:
as shown in fig. 5-8, the special mold 8 is composed of a set of first side plates 9, a set of second side plates 10 and a bottom plate 11;
vertical convex strips 901 are arranged on two sides of the first side plate 9, and vertical grooves 1001 matched with the vertical convex strips 901 are arranged on two sides of the inner side surface of the second side plate 10;
two parallel horizontal grooves 111 are formed in two sides of the top surface of the bottom plate 11, and horizontal protruding strips 1002 matched with the horizontal grooves 111 are arranged at the bottom of the second side plate 10;
the middle part of the bottom plate 11 is provided with an opening 112 with the same size as the supporting plate 7.
In the preferred scheme, the upper end of the vertical rib 901 is flush with the top surface of the first side plate 9, the lower end of the vertical rib 901 is higher than the bottom surface of the first side plate 9, the length of the vertical groove 1001 is the same as that of the vertical rib 901, the upper end of the vertical groove 1001 is flush with the top surface of the second side plate 10, and the lower end of the vertical groove 1001 is higher than the bottom surface of the second side plate 10.
In a preferred embodiment, the opening 112 is in the shape of a step 113, and the size of the step 113 is the same as that of the support plate 7.
By adopting the structure and the method, the problem that the pile protector is easy to stabilize caused by insufficient bearing capacity of the pile bottom part of the pile protector inserted into a soil layer and small friction force of a pile body in the prior art is solved, and the stability of the pile protector in a field environment is ensured, so that good conditions are provided for pile foundation construction.
Claims (7)
1. The utility model provides a pile foundation pile guard, includes pile guard pole (4) and concrete foundation (5), characterized by: the concrete pile foundation structure is characterized by further comprising a reinforcement cage (3), the reinforcement cage (3) is of a rectangular structure with openings at two ends, the reinforcement cage (3) is vertically embedded in pile protection pits (1) on the periphery of the concrete base (5), and the concrete base (5) is arranged in the reinforcement cage (3);
the reinforcement cage (3) is formed by binding main reinforcements (301) and stirrups (302) through binding wires, a V-shaped reinforcement (6) is further arranged between every two adjacent main reinforcements (301), one section of the V-shaped reinforcement (6) is bound and fixed on the reinforcement cage (3) through the binding wires, and the other section of the V-shaped reinforcement (6) obliquely and upwardly extends to be in contact with the side wall of the pile protection pit (1);
the pile foundation pile protection construction is carried out according to the following steps:
1) prefabricating the pile protecting rod (4) and the concrete base (5) by using a special die (8);
2) prefabricating and binding a reinforcement cage (3);
3) excavating a pile protection pit (1) on site;
4) backfilling fine sand on the bottom surface of the excavated pile protection pit (1) to form a sand layer (2);
5) installing a reinforcement cage (3), ensuring that a main reinforcement (301) of the reinforcement cage (3) is inserted into the sand layer (2), and enabling the end part of a V-shaped reinforcement (6) on the periphery of the reinforcement cage (3) to be in contact with the side wall of the pile protection pit (1);
6) mounting the concrete base (5) into the reinforcement cage (3) to enable the reinforcement cage (3) and the concrete base (5) to be mutually embedded;
7) and tamping the backfilled soil body.
2. A pile foundation pile according to claim 1, wherein: a sand layer (2) is backfilled on the bottom surface of the pile protection pit (1), and the lower end of a main rib (301) of the steel reinforcement cage (3) is inserted into the sand layer (2).
3. A pile foundation pile according to claim 2, wherein: the concrete foundation (5) bottom be equipped with backup pad (7), protect the lower extreme of stake pole (4) and pass concrete foundation (5) and with backup pad (7) between be connected fixedly, be equipped with back taper (701) on backup pad (7) bottom surface.
4. A pile foundation pile according to claim 3, wherein: the pile protection rod (4) is in threaded connection with the supporting plate (7), external threads are arranged on the outer wall of the lower end of the pile protection rod (4), and a matched threaded hole is formed in the central point of the top surface of the supporting plate (7).
5. A pile foundation pile according to claim 1, wherein: the special mould (8) consists of a group of first side plates (9), a group of second side plates (10) and a bottom plate (11);
vertical convex strips (901) are arranged on two sides of the first side plate (9), and vertical grooves (1001) matched with the vertical convex strips (901) are arranged on two sides of the inner side surface of the second side plate (10);
two parallel horizontal grooves (111) are formed in two sides of the top surface of the bottom plate (11), and horizontal protruding strips (1002) matched with the horizontal grooves (111) are formed in the bottom of the second side plate (10);
the middle part of the bottom plate (11) is provided with an opening (112) with the same size as the support plate (7).
6. A pile foundation pile according to claim 5, wherein: vertical sand grip (901) upper end and first curb plate (9) top surface parallel and level, vertical sand grip (901) lower extreme is higher than first curb plate (9) bottom surface, vertical recess (1001) length is the same with vertical sand grip (901), vertical recess (1001) upper end and second curb plate (10) top surface parallel and level, vertical recess (1001) lower extreme is higher than second curb plate (10) bottom surface.
7. A pile foundation pile according to claim 5, wherein: the opening (112) is in a step (113) shape, and the size of the step (113) is the same as that of the support plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010323549.XA CN111455984B (en) | 2020-04-22 | 2020-04-22 | Pile foundation fender pile and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010323549.XA CN111455984B (en) | 2020-04-22 | 2020-04-22 | Pile foundation fender pile and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111455984A CN111455984A (en) | 2020-07-28 |
| CN111455984B true CN111455984B (en) | 2021-10-01 |
Family
ID=71683773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010323549.XA Active CN111455984B (en) | 2020-04-22 | 2020-04-22 | Pile foundation fender pile and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111455984B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338272B (en) * | 2021-06-15 | 2022-07-22 | 广州市公路工程公司 | Annular reinforcing method for thick sand layer pile foundation |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11107274A (en) * | 1997-09-30 | 1999-04-20 | Nkk Corp | Front and reinforced construction of bottom enlarged pile and its execution |
| US20090285637A1 (en) * | 2008-05-16 | 2009-11-19 | W.T.W. Construction, Inc. | Pile mandrel with extendable reaming members |
| JP6033191B2 (en) * | 2013-09-09 | 2016-11-30 | シャープ株式会社 | Pile, pile installation jig, installation method of the pile, and solar power generation system using the pile |
| CN204959733U (en) * | 2015-09-10 | 2016-01-13 | 深圳市工勘岩土技术有限公司 | Bored concrete pile steel reinforcement cage structure |
| CN106400784B (en) * | 2016-08-12 | 2018-07-17 | 武汉志和岩土工程有限公司 | The construction method of bored concrete pile is made of filling pile cage of reinforcement |
| CN206503304U (en) * | 2017-02-28 | 2017-09-19 | 郭彪 | One-shot forming wood bag concrete component |
| CN206971206U (en) * | 2017-04-06 | 2018-02-06 | 中铁七局集团第四工程有限公司 | Lowering device for reinforcing cage of drilled pile |
| CN108330956B (en) * | 2018-02-24 | 2020-03-24 | 东莞福瑞来建筑劳务有限责任公司 | Foundation pit fender pile |
| CN208563987U (en) * | 2018-06-06 | 2019-03-01 | 中建二局第一建筑工程有限公司 | A kind of plate device for concreting |
| CN110258537B (en) * | 2019-07-03 | 2021-09-28 | 苏州市苏峰建设有限公司 | Tensile shear-resistant reinforcement cage device and using method thereof |
-
2020
- 2020-04-22 CN CN202010323549.XA patent/CN111455984B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111455984A (en) | 2020-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111455984B (en) | Pile foundation fender pile and construction method | |
| CN109811773B (en) | Bias tunnel portal excavation protection structure and construction method thereof | |
| KR20080092639A (en) | Pedestal | |
| CN112376552B (en) | Energy-saving pile foundation and construction method thereof | |
| CN116856932B (en) | Large-diameter prestress assembly vertical shaft structure containing glass fiber rib part and construction method | |
| CN212026233U (en) | Pile foundation fender pile | |
| CN106400814B (en) | Foundation pit supporting method | |
| CN218148483U (en) | Tower crane foundation structure | |
| CN212358366U (en) | Fan foundation transformation structure | |
| CN211447000U (en) | Foundation pit backfill area construction elevator foundation | |
| CN212225231U (en) | Protective structure for bias tunnel portal | |
| CN105887914A (en) | Construction method of high-voltage pole and tower | |
| CN111075471A (en) | Large karst cavity top filling type tunnel rockfall prevention structure and construction method | |
| CN213358626U (en) | Hard rock stratum upright post pile construction system for urban sensitive area | |
| CN218643412U (en) | Bridge construction tower crane foundation structure under weak geological conditions | |
| CN220013223U (en) | X-shaped inclined pile underpinning isolation structure for side-penetrating railway pile foundation of shield tunnel | |
| CN219862755U (en) | Prefabricated pile for building engineering | |
| CN220868201U (en) | Cast-in-situ gravity ground ox structure | |
| CN211773822U (en) | Anchor rod bar planting method photovoltaic support foundation structure | |
| CN216664179U (en) | Supporting construction suitable for pipeline engineering in landslide area | |
| CN219364689U (en) | Pile column type tower crane foundation suitable for weak geological conditions | |
| CN213979015U (en) | Concrete pile composite foundation | |
| CN112012222B (en) | Construction system and construction method for hard rock stratum upright post pile in urban sensitive area | |
| CN220080015U (en) | Pile planting device for keeping verticality of static-pressure pipe pile | |
| CN213539053U (en) | Semi-filling and semi-digging type embankment retaining wall reinforcing structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220130 Address after: 430048 No. 11 Jinyinhu Road, Dongxihu District, Wuhan City, Hubei Province Patentee after: CCCC SECOND HARBOR ENGINEERING Co.,Ltd. Patentee after: CCCC Wuhan harbor engineering design and Research Institute Co., Ltd Address before: No.11, Dongxihu Road, Jinyinhu District, Wuhan City, Hubei Province Patentee before: CCCC SECOND HARBOR ENGINEERING Co.,Ltd. |
|
| TR01 | Transfer of patent right |