CN110093942A - A kind of assembled radical well foundation of two-wall hollow - Google Patents
A kind of assembled radical well foundation of two-wall hollow Download PDFInfo
- Publication number
- CN110093942A CN110093942A CN201910460287.9A CN201910460287A CN110093942A CN 110093942 A CN110093942 A CN 110093942A CN 201910460287 A CN201910460287 A CN 201910460287A CN 110093942 A CN110093942 A CN 110093942A
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- Prior art keywords
- wall
- pit shaft
- shaft
- assembled
- root key
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- 125000004122 cyclic group Chemical group 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 238000003466 welding Methods 0.000 claims description 9
- 239000011150 reinforced concrete Substances 0.000 claims description 8
- 238000007667 floating Methods 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000012237 artificial material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000037805 labour Diseases 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
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- Engineering & Computer Science (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)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of assembled radical well foundations of two-wall hollow, are made of pit shaft, root key and back cover；Pit shaft is the cyclic annular tubular structure of two-wall hollow, is radially made of shaft in wall, rib wall and outer wall, and cavity vertically penetrates through between being formed by the borehole wall, so that inhaling mud equipment can transfer and move in cavity between the borehole wall；The footing of pit shaft is blade foot；On pit shaft, through shaft in wall, rib wall and outer wall and convexedly stretches in outer wall and be provided with root key；Pit shaft is vertically connected by coxopodite section and several layers standard segment, and coxopodite section is in bladed, forms blade foot；For all connecing the high pit shaft completed and sink in place, root key is set in the wellbore, then pours to form back cover in the bottom of pit shaft.Main member is formed by connecting by prefabricated components in the present invention, and structure is simple, it can be achieved that the sinking of open caisson fast accurate, is effectively reduced difficulty of construction and improves operation safety coefficient, and conducive to industrial volume production, economic benefit is obvious.
Description
Technical field
The present invention relates to structures in a kind of underground and water, more specifically especially a kind of to apply foundation engineering in water
In radical well foundation.
Background technique
Open caisson is a kind of manufactured on the ground, equal opening up and down hollow well tubular structure, by removing underground and well
The soil body in bucket, helps heavy measure to be allowed to sink to the underground structure of a certain depth in underground, is widely used in bridge by being self-possessed or being equipped with
In the engineerings such as beam, Fang Jian, municipal administration, mine, water conservancy, ocean.
With the fast development of construction technology and equipment, basic engineering construction progress, which has become, restricts system engineering progress
Major influence factors.The method that well foundation conventional on-site is poured or built section by section, soil is taken to sink in pit shaft, causes live work
Work amount is big, and easy deflection, duty cycle are long in sinking watching, and consumption of labors and material is more.
Summary of the invention
The present invention is to provide a kind of assembled root of two-wall hollow to avoid above-mentioned existing deficiencies in the technology
The cast-in-place open caisson of tradition is transformed into the fabricated construction of two-wall hollow by formula well foundation, and root key is squeezed to the basal perimeter soil body
In, pile soil common action is played, stock utilization is improved, increases foundation bearing capacity, improves basic anti-seismic performance, reaches artificial material
Material consumption is less, mechanical equipment requirement is low, well sinking is precisely quick, horizontal high, the duration cost saving of quality safety, environment friend
It is good, conducive to industrial volume production, meet the purposes of different requirement of engineering.
The present invention adopts the following technical scheme that in order to solve the technical problem
The assembled radical well foundation of two-wall hollow of the present invention, is structurally characterized in that and is made of pit shaft, root key and back cover；
The pit shaft is the cyclic annular tubular structure of two-wall hollow, is radially made of shaft in wall, rib wall and outer wall, and
Cavity vertically penetrates through between the borehole wall formed by the shaft in wall, rib wall and outer wall, the cavity size of cavity between the borehole wall
Meet the needs for inhaling mud equipment decentralization and movement in cavity between the borehole wall；The footing of the pit shaft is blade foot；In the well
On cylinder, through shaft in wall, rib wall and outer wall and convexedly stretches in outer wall and be provided with root key；
The pit shaft is vertically connected by coxopodite section and several layers standard segment, and the coxopodite section is in bladed, forms institute
State blade foot；
For all connecing the high pit shaft completed and sink in place, root key is set in the pit shaft, then at the bottom of pit shaft
Portion pours to form back cover；Described key is precast reinforced concrete structure.
The design feature of the assembled radical well foundation of two-wall hollow of the present invention is lain also in: the coxopodite section is by several
Prefabricated coxopodite section block is circumferentially upper assembled；The standard segment is connected by the calibrated bolck and shaft in wall of circumferential direction connection radially
It connects, the calibrated bolck is the precast member for reinforcing bar concrete of outer wall and rib wall poured up at a time, and the shaft in wall is
Steel plate inner wall, the steel plate inner wall are circumferential joint forming after the forming of single segmental time processing or partition machining.
The design feature of the assembled radical well foundation of two-wall hollow of the present invention is lain also in: in the prefabricated coxopodite section block
And in calibrated bolck, it is embedded with junction steel plate, forms band at the building block of junction steel plate, using junction steel plate circumferential and vertical
On so that adjacent building block is attached in a manner of welding, bolt, riveting or bonding；Shaft in wall is circumferential and vertical
It is attached by the way of welding or bolt；Radial through bolt or welding manner progress between calibrated bolck and shaft in wall
Connection.
The design feature of the assembled radical well foundation of two-wall hollow of the present invention is lain also in: described key is in pit shaft standard
Vertically layering setting within the scope of segment, the root key of adjacent layer are staggered and pass through rib wall；In the standard knot for being provided with root key
Duan Zhong corresponds to root key position, the reserved root keyhole of perforation, institute is provided in the shaft in wall, rib wall and outer wall
The section and root key for stating reserved root keyhole match.
The design feature of the assembled radical well foundation of two-wall hollow of the present invention is lain also in: for all connect it is high complete and
The pit shaft to sink in place is placed in cavity between the borehole wall and fills out core object, to increase pit shaft anti-floating ability or increase pit shaft entirety
Rigidity, the core object of filling out is rubble, gravel or cast-in-situ steel reinforced concrete.
The design feature of the assembled radical well foundation of two-wall hollow of the present invention is lain also in: the cross section shape of the pit shaft
Shape is round, oval, rectangle or nose circle shape.
The design feature of the assembled radical well foundation of two-wall hollow of the present invention is lain also in: being opened on the rib wall (9)
If emptying aperture is to reduce self weight.
Compared with the prior art, the invention has the advantages that:
1, according to cylinder computational theory, open caisson maximum radial stress occurs in borehole wall outer edge, and maximum of hoop stress occurs
In borehole wall inward flange, and maximum of hoop stress is greater than maximum radial stress, and dangerous point appears in the inward flange of the borehole wall；In the present invention
Double-walled form is set by pit shaft, is connected between shaft in wall and outer wall with rib wall, effective force avoids stress from concentrating；
2, outer wall and rib wall are reinforced concrete structure in the present invention, and shaft in wall uses steel plate, are effectively improved whole rigid
Degree, two kinds of materials can largely play effect；
3, the discrete assembling of component of the present invention, transport and construction equipment Small Universal, open caisson balance are precisely quickly sunk；
According to shaft structure stress condition and mud equipment size is inhaled, rational deployment borehole size gives full play to the mechanical property of different materials
Can, economical rationality primary structure member is formed, structure size is reduced, reduces material consumption；
3, for cast-in-place concrete quality fluctuation is big, construction site is narrow, large-scale component transport difficult, over-water construction
The unfavorable factors such as waves whipped up by the wind rolled turbulently, the present invention use the structure type of " vertical layered, lateral piecemeal, spicing forming type " by sinking well component
Discrete miniaturization, using Small Universal construction machinery, live quick-assembling, it is ensured that engineering safety, quality, progress are controllable, reduce
Project cost.
Detailed description of the invention
Fig. 1 is schematic cross-sectional view of the present invention；
Fig. 2 is schematic front view of the present invention；
Fig. 3 is the standard segment schematic cross-sectional view of pit shaft root key position in the present invention；
Fig. 4 is standard segment schematic cross-sectional view of the pit shaft not on root key position in the present invention；
Fig. 5 is that pit shaft coxopodite section assembles explosive view in the present invention；
Fig. 6 is that explosive view is assembled in the pit shaft standard segment of light plate inner wall single segmental piecemeal of the present invention production；
Fig. 7 is that explosive view is assembled in the pit shaft standard segment of light plate inner wall single segmental integral manufacturing of the present invention；
Fig. 8 is the rib wall elevation containing hole in the present invention.
Figure label: 1 pit shaft, 2 keys, 3 back covers, 4 coxopodite sections, 4a blade foot, 5 standard segments, 6 prefabricated coxopodite section blocks, 7 marks
Quasi- block, 8 inner walls, 9 rib walls, 10 outer walls, cavity between 11 boreholes wall, 12 keyholes, 13 holes.
Specific embodiment
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, in the present embodiment the assembled radical well foundation of two-wall hollow be by pit shaft 1,
Root key 2 and back cover 3 form；Pit shaft 1 is the cyclic annular tubular structure of two-wall hollow, radially by shaft in wall 8, rib wall 9 and outer
Wall 10 forms, and cavity 11 vertically penetrates through between the borehole wall formed by shaft in wall 8, rib wall 9 and outer wall 10, cavity 11 between the borehole wall
Cavity size meet and inhale mud equipment and transferred in cavity 11 between the borehole wall and mobile needs；The footing of pit shaft 1 is blade foot；In well
On cylinder 1, extends radially through shaft in wall 8, rib wall 9 and outer wall 10 and convexedly stretch in outer wall 10 and be provided with root key 2；Pit shaft 1 is vertically
It is connected by coxopodite section 4 and several layers standard segment 5, coxopodite section 4 is in bladed, forms blade foot 4a；For all connect it is high complete and
Root key 2 is arranged in pit shaft 1, then pours to form back cover 3 in the bottom of pit shaft 1 for the pit shaft 1 to sink in place；Root key 2 is prefabricated
Reinforced concrete member.
In specific implementation, corresponding technical measures also include:
As shown in figure 5, coxopodite section 4 is circumferentially upper assembled by several prefabricated coxopodite section blocks 6.
As shown in Figure 6 and Figure 7, standard segment 5 is by the calibrated bolck 7 and shaft in wall 8 of circumferential direction connection by radially connected
At calibrated bolck 7 is the precast member for reinforcing bar concrete of 9 poured up at a time of outer wall 10 and rib wall, and shaft in wall 8 is in steel plate
Wall.Steel plate inner wall 8 shown in Fig. 6 is circumferentially joint forming, steel plate inner wall 8 shown in Fig. 7 are single segmental after partition machining
Time processing forming.
In order to implement the connection between component, in prefabricated coxopodite section block 6 and calibrated bolck 7, it is embedded with junction steel plate, shape
At band at the building block of junction steel plate, enable adjacent building block with welding, bolt on circumferential and vertical using junction steel plate
The mode for connecing, riveting or bonding is attached；Shaft in wall 8 is connected in circumferential direction and vertically by the way of welding or bolt
It connects；It is attached between calibrated bolck 7 and shaft in wall 8 radial through bolt or welding manner.
As shown in Fig. 1, Fig. 3, Fig. 4, Fig. 6, Fig. 7 and Fig. 8, root key 2 is vertically layered in the range of pit shaft standard segment 5
Setting, the root key 2 of adjacent layer are staggered and pass through rib wall 9.In the standard segment 5 for being provided with root key 2, correspond to root key 2
Position is provided with the reserved root keyhole 12 of perforation in shaft in wall 8, rib wall 9 and outer wall 10, reserves cutting for root keyhole 12
Face matches with root key 2.
For all connecing the high pit shaft 1 completed and sink in place, is placed in cavity 11 between the borehole wall and fill out core object, to increase well
Cylinder anti-floating ability increases pit shaft overall stiffness, and filling out core object is rubble, gravel or cast-in-situ steel reinforced concrete；The cross section of pit shaft 1
Shape can be round, ellipse, rectangle or nose circle shape；Emptying aperture 13 can be opened up on rib wall 9 to reduce self weight, such as Fig. 8 institute
Show.
Work progress:
Carry out basement process at the construction field (site), make native loose tool or setting support frame so that prefabricated coxopodite section block 6 circumferentially
It is successively vertical to place, circumferential connection is carried out by the pre-buried junction steel plate in prefabricated coxopodite section block 6, forms the coxopodite section 4 of pit shaft.
Calibrated bolck 7 is lifted in established coxopodite section 4, by circumferential and vertical junction steel plate and adjacent modular block 7 into
Row connection, and be attached with shaft in wall 8, complete first layer standard segment 5；This process is repeated, if completing in pit shaft 1
Dried layer standard segment 5 connects height, assembly and sinks；Wherein, shaft in wall 8 shown in fig. 6 is the form of single segmental piecemeal production,
During the assembly of each standard segment, need to be connected as whole segment for each piece first；Shaft in wall 8 shown in Fig. 7 is
Single segmental integral manufacturing directly lifts its whole segment during the assembly of each standard segment.
During well-sinking, mud equipment will be inhaled and transferred in cavity 11 between the vertically communicated borehole wall, make to inhale mud equipment
Suction head arrive at coxopodite section 4 blade foot position at, to wellbore bottom carry out suction operation, be easier to the blade foot of pit shaft coxopodite section
In sinking；When pit shaft integral assembling is completed and sinks in place, prefabricated root key 2 is placed in inside pit shaft 1, by from top to bottom
Sequence successively heads into root key 2 in soil layer along root keyhole 12；Then, core object is filled out in the placement of cavity 11 between the borehole wall, to foundation bottom
Back cover 3 is cleared up and poured, the construction of radical well foundation is completed.
Claims (7)
1. the assembled radical well foundation of a kind of two-wall hollow, it is characterized in that by pit shaft (1), root key (2) and back cover (3) group
At；
The pit shaft (1) is the cyclic annular tubular structure of two-wall hollow, radially by shaft in wall (8), rib wall (9) and outer wall
(10) it forms, and cavity (11) vertically penetrates through between the borehole wall formed by the shaft in wall (8), rib wall (9) and outer wall (10),
The cavity size of cavity (11) meets the need for inhaling mud equipment decentralization and movement in cavity (11) between the borehole wall between the borehole wall
It wants；The footing of the pit shaft (1) is blade foot；On the pit shaft (1), through shaft in wall (8), rib wall (9) and outer wall (10)
And it convexedly stretches in outer wall (10) and is provided with root key (2)；
The pit shaft (1) is vertically connected by coxopodite section (4) and several layers standard segment (5), and the coxopodite section (4) is in sword
Shape forms the blade foot；
For all connecing the high pit shaft (1) completed and sink in place, root key (2) are set in the pit shaft (1), then in pit shaft
(1) bottom pours to form back cover (3)；Described key (2) is precast reinforced concrete structure.
2. the assembled radical well foundation of two-wall hollow according to claim 1, it is characterized in that: the coxopodite section (4)
It is circumferentially upper assembled by several prefabricated coxopodite section blocks (6)；The calibrated bolck (7) that the standard segment (5) is connected by circumferential direction
It is formed with shaft in wall (8) radially connected, the calibrated bolck (7) is the steel of outer wall (10) and rib wall (9) poured up at a time
Reinforced concrete prefabricated components, the shaft in wall (8) are steel plate inner wall, and the steel plate inner wall is the forming of single segmental time processing,
Or circumferential joint forming after partition machining.
3. the assembled radical well foundation of two-wall hollow according to claim 1, it is characterised in that: at the prefabricated bottom
In segment block (6) and calibrated bolck (7), it is embedded with junction steel plate, band is formed into the building block of junction steel plate, utilizes junction steel plate
Adjacent building block is set to be attached in a manner of welding, bolt, riveting or bonding on circumferential and vertical；Shaft in wall
(8) it is attached by the way of welding or bolt in circumferential direction and vertically；In radial direction between calibrated bolck (7) and shaft in wall (8)
It is attached by bolt or welding manner.
4. the assembled radical well foundation of two-wall hollow according to claim 1, it is characterised in that: described key (2)
The vertically layering setting in pit shaft standard segment (5) range, the root key (2) of adjacent layer are staggered and pass through rib wall (9)；?
It is provided in the standard segment (5) of root key (2), corresponds to root key (2) position, in the shaft in wall (8), rib wall (9)
With the reserved root keyhole (12) for being provided with perforation in outer wall (10), section and root key (2) phase of the reserved root keyhole (12)
Match.
5. the assembled radical open caisson base of two-wall hollow according to claim 1, it is characterised in that: high complete for all connecing
At and the pit shaft (1) in place of sinking, placed in cavity (11) between the borehole wall and fill out core object, to increase pit shaft anti-floating ability or increasing
Add pit shaft overall stiffness, the core object of filling out is rubble, gravel or cast-in-situ steel reinforced concrete.
6. the assembled radical open caisson base of two-wall hollow according to claim 1, it is characterised in that: the pit shaft (1)
Transverse shape is round, oval, rectangle or nose circle shape.
7. the assembled radical open caisson base of two-wall hollow according to claim 1, it is characterised in that: in the rib wall (9)
On open up emptying aperture with reduce self weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910460287.9A CN110093942A (en) | 2019-05-30 | 2019-05-30 | A kind of assembled radical well foundation of two-wall hollow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910460287.9A CN110093942A (en) | 2019-05-30 | 2019-05-30 | A kind of assembled radical well foundation of two-wall hollow |
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| CN110093942A true CN110093942A (en) | 2019-08-06 |
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| CN201910460287.9A Pending CN110093942A (en) | 2019-05-30 | 2019-05-30 | A kind of assembled radical well foundation of two-wall hollow |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110952560A (en) * | 2019-12-13 | 2020-04-03 | 广州市市政集团有限公司 | Prefabricated assembled open caisson |
| CN111101542A (en) * | 2019-12-25 | 2020-05-05 | 润盛建设集团有限公司 | Assembly type recyclable pipe jacking working well and construction process thereof |
| CN111197316A (en) * | 2020-03-06 | 2020-05-26 | 中交第四航务工程勘察设计院有限公司 | Novel circular double-wave steel open caisson structure |
| CN112359858A (en) * | 2020-12-04 | 2021-02-12 | 天津市丙辉建材科技开发有限公司 | Sinking well curtain structure and construction method |
| CN113174988A (en) * | 2021-04-30 | 2021-07-27 | 中国化学工程第十三建设有限公司 | Double-wall concrete open caisson structure and construction method |
| CN114775667A (en) * | 2022-04-28 | 2022-07-22 | 中铁十五局集团有限公司 | Novel segment installation method for meeting effective connection and seepage prevention of open caisson |
| CN114809055A (en) * | 2022-05-25 | 2022-07-29 | 湖南梅溪湖建设有限公司 | Prefabricated spliced open caisson structure and construction method |
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