CN115354579A - Assembled pile foundation construction platform and pile foundation construction method - Google Patents
Assembled pile foundation construction platform and pile foundation construction method Download PDFInfo
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- CN115354579A CN115354579A CN202211002687.3A CN202211002687A CN115354579A CN 115354579 A CN115354579 A CN 115354579A CN 202211002687 A CN202211002687 A CN 202211002687A CN 115354579 A CN115354579 A CN 115354579A
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- 238000010276 construction Methods 0.000 title claims abstract description 107
- 238000011065 in-situ storage Methods 0.000 claims abstract description 5
- 238000005553 drilling Methods 0.000 claims description 21
- 239000011148 porous material Substances 0.000 claims description 15
- 238000004873 anchoring Methods 0.000 claims description 12
- 239000010802 sludge Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 23
- 239000010959 steel Substances 0.000 abstract description 23
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 239000002689 soil Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/08—Sinking workpieces into water or soil inasmuch as not provided for elsewhere
-
- 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
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Architecture (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses an assembly type pile foundation construction platform and a pile foundation construction method, wherein the assembly type pile foundation construction platform comprises the following steps: the unit blocks comprise force unloading plates used for being placed on the upper surface of a silt foundation, a plurality of longitudinal beams fixedly arranged on the force unloading plates and a plurality of cross beams fixedly arranged on the longitudinal beams, the longitudinal beams are arranged along the length direction of the force unloading plates, the longitudinal beams are arranged at intervals along the width direction of the force unloading plates, the cross beams are arranged along the width direction of the longitudinal beams, and the cross beams are arranged at intervals along the length direction of the longitudinal beams; a blocking plate detachably coupled to the unit block; and at least three anchor piles arranged along the circumferential direction of the spliced plurality of unit blocks, the at least three anchor piles are buried in the muddy foundation, and the unit blocks are connected to the at least three anchor piles. The invention solves the problems of insufficient bearing capacity and large steel consumption of the existing pile foundation construction platform of the cast-in-situ bored pile in the silt geology.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to an assembly type pile foundation construction platform and a pile foundation construction method.
Background
In the pier construction of wading and silt geology, the bored cast-in-place pile foundation is widely applied. The construction of the pile foundation construction platform is a precondition for the foundation construction of the wading pier drilling pile, and provides a water field for construction personnel and equipment operation and machine material stacking. Silt geological construction platform often adopts forms such as fill soil or cofferdam, often takes place when leading to the incident because misoperation causes the foundation bearing capacity not enough.
The construction scheme of the pile foundation construction platform considers factors such as the current situation of large-scale equipment, construction period requirements, economic conditions and the like, and depends on the hydrological conditions of pier positions, the geological conditions such as riverbed rock surface topography, the thickness of a covering layer and the like. Under the general condition, the drilling platform of the wading pier pile foundation adopts a steel pipe pile and upper steel beam combined structure, and the steel consumption is large. The construction platform is mostly manufactured by building island cofferdams or directly filling soil at the construction position of the shallow water pier.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
In order to overcome the defects in the prior art, an assembled pile foundation construction platform and a pile foundation construction method are provided so as to solve the problems that the existing pile foundation construction platform of the bored pile for the silt geology is insufficient in bearing capacity and large in steel consumption.
In order to realize above-mentioned purpose, provide an assembled pile foundation construction platform, include:
the unit blocks comprise a force unloading plate, a plurality of longitudinal beams and a plurality of cross beams, wherein the force unloading plate is used for being placed on the upper surface of a muddy foundation, the longitudinal beams are fixedly arranged on the force unloading plate in the length direction, the longitudinal beams are arranged at intervals in the width direction of the force unloading plate, the cross beams are arranged in the width direction of the longitudinal beams, and the cross beams are arranged at intervals in the length direction of the longitudinal beams;
the plugging plate is used for plugging the construction pore channel and is detachably connected to the unit block; and
at least three anchor piles arranged in the circumferential direction of the spliced plurality of unit blocks are buried in the muddy foundation, and the spliced plurality of unit blocks are connected to at least three anchor piles.
Furthermore, the longitudinal beam comprises an upper flange plate, a lower flange plate and a first web plate, the first web plate is connected between the middle parts of the upper flange plate and the lower flange plate, and the lower flange plate is fixedly arranged on the stress relief plate.
Furthermore, two adjacent opposite sides of the web of the longitudinal beam of the unit plate are detachably connected together through a first connecting plate.
Furthermore, first perforation has been seted up to the tip of web, the second perforation has been seted up respectively at the both ends of first connecting plate, the both ends of first connecting plate overlap joint respectively in adjacent two the web of the girder of cell board, just the second perforation of first connecting plate with the first perforation intercommunication of web, first perforation with movably wear to be equipped with in the second perforation and split the screw rod.
Furthermore, the cross beam comprises a bearing plate, two opposite sides of the bearing plate respectively extend downwards to form the supporting flange plates, and the supporting flange plates are fixedly arranged on the upper flange plates of the longitudinal beams.
Furthermore, the cross beams of two adjacent unit blocks are detachably connected together through a second connecting plate, and two opposite sides of the second connecting plate are respectively detachably lapped on the supporting plates of the cross beams of two adjacent unit blocks.
Furthermore, a lifting lug is formed on the plugging plate.
Further, the distance between the longitudinal beams is larger than that between the transverse beams.
The invention provides a pile foundation construction method adopting an assembly type pile foundation construction platform, which comprises the following steps:
at least three anchoring piles are arranged on the sludge foundation in a driving mode, so that the at least three anchoring piles are arranged along the circumferential direction of the installation position of the fabricated pile foundation construction platform;
laying a plurality of unit blocks on the sludge texture base and splicing the unit blocks together in a detachable mode, so that gaps of two adjacent unit blocks are encircled to form a construction hole channel, and the construction hole channel is aligned to a pile foundation construction position;
detachably connecting a plugging plate in the construction pore channel to temporarily plug the construction pore channel;
placing a hoisting drilling machine on the spliced plurality of unit plates;
disassembling the plugs one by one to open one construction pore channel, and drilling in the sludge foundation through the construction pore channel by a drilling machine to form a pile hole;
and pouring in each pile hole to form a cast-in-situ bored pile.
The assembly type pile foundation construction platform has the advantages that the assembly type steel structure platform is adopted, so that the steel consumption of a steel structure bridge is greatly reduced, the assembly type pile foundation construction platform is light and rapid, and the construction is facilitated. The assembly type pile foundation construction platform is reasonable in structural stress and greatly reduced in construction difficulty. According to the assembly type pile foundation construction platform, by using an assembly construction method of back-field assembly and field assembly, each structure is divided into a plurality of units, and the units are assembled on the spot through bolts, so that the assembly degree of steel members is greatly improved, and construction cost is reduced while the construction period is shortened by adopting portable construction equipment.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of an assembly type pile foundation construction platform according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a cell block according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a construction tunnel according to an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 3, the present invention provides an assembly type pile foundation construction platform, including: a plurality of unit blocks 1, a blocking plate 2 and at least three anchor piles 3.
Wherein a plurality of block units 1 are detachably spliced together. In this embodiment, the plurality of cell boards are arranged in a matrix. One side of part of the unit block 1 is provided with a gap. The gaps of two adjacent unit blocks 1 are enclosed to form a construction hole 10.
In this embodiment, the unit blocks with the gaps are partially spliced to form the positioning area, and the remaining complete unit blocks are spliced to form the stress area. The stress zone is used for bearing the weight pressure and the construction pressure of the drilling machine.
Specifically, each unit block 1 includes a force-releasing plate 11, a plurality of longitudinal beams 12, and a plurality of cross beams 13. The stress relief plate 11 is placed on the upper surface of the muddy foundation. The longitudinal beams 12 are fixedly arranged on the stress relief plate 11. The plurality of cross beams 13 are fixedly arranged on the plurality of longitudinal beams 12. The longitudinal beams 12 are arranged along the length direction of the force-discharging plate 11. The longitudinal beams 12 are provided at intervals in the width direction of the force-releasing plate 11. The cross member 13 is provided along the width direction of the side member 12. The plurality of cross members 13 are provided at intervals along the longitudinal direction of the longitudinal beams 12.
The blocking plate 2 is detachably attached to the unit block 1. The plugging plate 2 is used for temporarily plugging the construction hole 10.
At least three anchor piles 3 are arranged along the circumferential direction of the spliced plurality of unit blocks 1. At least three anchor piles 3 are buried in the muddy foundation. The spliced plurality of unit blocks 1 are connected to at least three anchor piles 3.
At least three anchoring piles are firstly arranged in the silt foundation, then a plurality of unit blocks are assembled, and finally the spliced plurality of unit blocks are connected to the anchoring piles. When drilling, a plugging plate is disassembled, a drilling machine is placed on the assembled and spliced unit blocks, and the construction pore channels with the plugging plates disassembled are used for drilling the shaped pile holes and pouring the cast-in-situ bored pile.
According to the fabricated pile foundation construction platform, the fabricated steel structure platform is adopted, so that the steel consumption of a steel structure bridge is greatly reduced, and the fabricated pile foundation construction platform is light, convenient and quick and is beneficial to construction. The assembly type pile foundation construction platform is reasonable in structural stress and greatly reduced in construction difficulty. According to the assembly type pile foundation construction platform, by using an assembly construction method of field assembly and field assembly, each structure is divided into a plurality of units, and the units are assembled on the spot through bolts, so that the assembly degree of steel members is greatly improved, and construction cost is reduced while the construction period is shortened by adopting portable construction equipment.
In the present embodiment, referring to fig. 3, the stringers 12 comprise an upper flange plate, a lower flange plate and a first web. The first web is connected between the middle portions of the upper flange plate and the lower flange plate. The lower flange plate is fixedly arranged on the force unloading plate 11.
In a preferred embodiment, the longitudinal beams are i-shaped steel. The distance between the longitudinal beams 12 is greater than the distance between the transverse beams 13.
In this embodiment, with continued reference to fig. 3, the opposite sides of the webs of the stringers 12 of two adjacent cell panels are detachably connected together by a first connecting panel 5.
The end of the web plate is provided with a first through hole. The two ends of the first connecting plate 5 are respectively provided with a second through hole. The two ends of the first connecting plate 5 are respectively lapped on the web plates of the longitudinal beams 12 of the two adjacent cell plates. And the second through-holes of the first connecting plate 5 communicate with the first through-holes of the web. The first through hole and the second through hole are movably provided with oppositely-pulling screw rods in a penetrating mode.
The cross beam 13 comprises a support plate, opposite sides of the support plate respectively extend downwards to form support flange plates, and the support flange plates are fixedly arranged on the upper flange plates of the longitudinal beams 12. In this embodiment, the beam is a channel steel.
The cross beams 13 of the adjacent two unit blocks 1 are detachably connected together by the second connecting plate 6, and opposite sides of the second connecting plate 6 are detachably overlapped with the support plates of the cross beams 13 of the adjacent two unit blocks 1, respectively.
The plugging plate 2 is formed with a lifting lug. And when the construction pore channel needs to be opened, hoisting the corresponding plugging plate in the construction pore channel.
In the embodiment, when a drilling machine (crawler crane) inserts and extracts the pile casing, the steel pile casing is arranged according to the weight of 15t, the crawler crane 80t and the vibration hammer 5t; and hoisting operation is carried out on a stress area of the crawler crane platform, the contact area of the crawler and a supporting plate of the cross beam is =700mm multiplied by 6000mm, and the crawler distance is 4500mm.
The fabricated pile foundation construction platform comprises 12 unit blocks, and the size of each block is 3m multiplied by 6m. The invention provides an assembled pile foundation construction platform with the overall size of 12m multiplied by 18m. Except the bolt connecting part, all other components are welded firmly, wherein the stress relief plate and the I-shaped steel are subjected to spot welding, the distance is controlled according to no less than 18mm, the width of a welding line is no less than 6mm, M14 stud bolts are adopted at the contact part of the I-shaped steel and the cross beam except for all the assembly components, and all other positions are subjected to full welding.
The stress relief plate is made of a 10mm steel plate, the longitudinal beams are made of 25a steel and are 500mm apart, and the cross beams are made of channel steel and are 250mm apart.
Before the assembly type pile foundation construction platform is installed, original soil needs to be subjected to proper foundation treatment, leveling and rolling. After the lofting of the platform position is finished, 1I-shaped steel is respectively inserted and driven at 4 corners of the platform to serve as anchoring piles, the soil penetration depth of the anchoring piles is not less than 6m, and the N-shaped phi 20 steel bars are respectively connected with four unit blocks at the corners of the platform.
The assembly type pile foundation construction platform is suitable for SP3 pile foundation construction of the bearing platform and is not suitable for wading bearing platform pile foundation construction.
The invention provides a pile foundation construction method adopting an assembly type pile foundation construction platform, which comprises the following steps:
s1: and at least three anchoring piles 3 are arranged on the sludge foundation in a driving mode, so that the at least three anchoring piles 3 are arranged along the circumferential direction of the installation position of the fabricated pile foundation construction platform.
In the present embodiment, the number of anchor piles is four. Four anchor piles are arranged in a matrix form.
S2: lay polylith unit piece 1 on silt texture base to with polylith unit piece 1 detachably concatenation together, make the breach of two blocks of adjacent unit pieces 1 enclose to close and form a construction pore 10, make construction pore 10 aim at pile foundation construction position.
When a plurality of unit blocks are assembled, the unit blocks with gaps are oppositely arranged in pairs, so that the gaps of two adjacent unit blocks 1 are enclosed to form a construction hole channel 10, and the construction hole channel 10 is aligned to the pile foundation construction position.
A plurality of unit blocks with gaps are spliced to form a positioning area for positioning the pile hole. And on the other side of the mounting position, a stress area is formed by splicing a plurality of unit blocks without gaps. The stress area is arranged on one side of the positioning area and is connected with the positioning area into a whole.
S3: the plugging plate 2 is detachably connected in the construction tunnel 10 to temporarily plug the construction tunnel 10.
S4: and (5) hoisting the drilling machine 4 and placing the drilling machine on the spliced plurality of unit plates.
The drilling machine is placed in the stress area of the unit plates, and a drill rod of the drilling machine is aligned to a construction hole.
S5: the plugs are detached one by one to open a construction hole 10, and a pile hole is formed by drilling in the sludge foundation through the construction hole 10 by a drilling machine.
After the drilling machine is set in place, a plugging plate of a construction tunnel is removed, and a pile hole is drilled in the sludge foundation through the construction tunnel 10 by the drilling machine. And then constructing each construction hole one by one.
S6: and pouring in each pile hole to form the cast-in-situ bored pile.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (9)
1. An assembled pile foundation construction platform, comprising:
the unit blocks comprise a force unloading plate, a plurality of longitudinal beams and a plurality of cross beams, wherein the force unloading plate is used for being placed on the upper surface of a muddy foundation, the longitudinal beams are fixedly arranged on the force unloading plate in the length direction, the longitudinal beams are arranged at intervals in the width direction of the force unloading plate, the cross beams are arranged in the width direction of the longitudinal beams, and the cross beams are arranged at intervals in the length direction of the longitudinal beams;
the plugging plate is used for plugging the construction pore and is detachably connected to the unit block; and
at least three anchoring piles arranged along the circumferential direction of the spliced plurality of unit blocks are buried in the silt foundation, and the spliced plurality of unit blocks are connected to the at least three anchoring piles.
2. The fabricated pile foundation construction platform of claim 1, wherein the longitudinal beam comprises an upper flange plate, a lower flange plate and a first web plate, the first web plate is connected between the upper flange plate and the middle portion of the lower flange plate, and the lower flange plate is fixedly arranged on the stress relief plate.
3. An assembled pile foundation construction platform according to claim 2, wherein the web of the stringers of two adjacent cell plates are releasably connected together on opposite sides by a first connecting plate.
4. The assembly type pile foundation construction platform of claim 3, wherein the end of the web plate is provided with a first through hole, the two ends of the first connection plate are respectively provided with a second through hole, the two ends of the first connection plate are respectively lapped on the web plates of the longitudinal beams of two adjacent unit plates, the second through hole of the first connection plate is communicated with the first through hole of the web plate, and a counter-pulling screw rod is movably arranged in the first through hole and the second through hole in a penetrating manner.
5. The fabricated pile foundation construction platform of claim 2, wherein the cross beams comprise bearing plates, opposite sides of the bearing plates respectively extend downwards to form the supporting flange plates, and the supporting flange plates are fixedly arranged on upper flange plates of the longitudinal beams.
6. The fabricated pile foundation construction platform of claim 5, wherein the cross-beams of two adjacent unit blocks are detachably connected together by a second connecting plate, and opposite sides of the second connecting plate are detachably overlapped with the supporting plates of the cross-beams of two adjacent unit blocks, respectively.
7. An assembled pile foundation construction platform as claimed in claim 1, wherein the blanking plate is formed with a lifting lug.
8. An assembled pile foundation construction platform as claimed in claim 1, wherein the pitch of the stringers is greater than the pitch of the beams.
9. A pile foundation construction method using the fabricated pile foundation construction platform according to any one of claims 1 to 8, comprising the steps of:
at least three anchoring piles are arranged on the sludge foundation in a driving mode, so that the at least three anchoring piles are arranged along the circumferential direction of the installation position of the fabricated pile foundation construction platform;
laying a plurality of unit blocks on the sludge texture base and splicing the unit blocks together in a detachable mode, so that gaps of two adjacent unit blocks are encircled to form a construction hole channel, and the construction hole channel is aligned to a pile foundation construction position;
detachably connecting a plugging plate in the construction pore channel to temporarily plug the construction pore channel;
placing a hoisting drilling machine on the spliced plurality of unit plates;
disassembling the plugs one by one to open a construction pore channel, and drilling the construction pore channel in the sludge foundation through a drilling machine to form a pile hole;
and pouring in each pile hole to form the cast-in-situ bored pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211002687.3A CN115354579A (en) | 2022-08-19 | 2022-08-19 | Assembled pile foundation construction platform and pile foundation construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211002687.3A CN115354579A (en) | 2022-08-19 | 2022-08-19 | Assembled pile foundation construction platform and pile foundation construction method |
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| Publication Number | Publication Date |
|---|---|
| CN115354579A true CN115354579A (en) | 2022-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211002687.3A Pending CN115354579A (en) | 2022-08-19 | 2022-08-19 | Assembled pile foundation construction platform and pile foundation construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117027673A (en) * | 2023-08-28 | 2023-11-10 | 中建交通工程建设(长春)有限公司 | Conveniently-moved river cast-in-place pile foundation construction device and construction method thereof |
-
2022
- 2022-08-19 CN CN202211002687.3A patent/CN115354579A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117027673A (en) * | 2023-08-28 | 2023-11-10 | 中建交通工程建设(长春)有限公司 | Conveniently-moved river cast-in-place pile foundation construction device and construction method thereof |
| CN117027673B (en) * | 2023-08-28 | 2023-12-22 | 中建交通工程建设(长春)有限公司 | Conveniently-moved river cast-in-place pile foundation construction device and construction method thereof |
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