CN106968259A - A kind of underground three-dimensional garage crater wall structure frozen construction method - Google Patents
A kind of underground three-dimensional garage crater wall structure frozen construction method Download PDFInfo
- Publication number
- CN106968259A CN106968259A CN201710406345.0A CN201710406345A CN106968259A CN 106968259 A CN106968259 A CN 106968259A CN 201710406345 A CN201710406345 A CN 201710406345A CN 106968259 A CN106968259 A CN 106968259A
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- China
- Prior art keywords
- freezing
- underground
- garage
- construction method
- dimensional garage
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- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/14—Restraining of underground water by damming or interrupting the passage of underground water by freezing the soil
-
- 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
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
Abstract
A kind of underground three-dimensional garage crater wall structure frozen construction method, its Specific construction step is：A, basis can utilize ground areas and garage capacity design underground garage geometry form and size；B, using each freezing borehole of drilling machine construction, when drilling reaches freezing pipe is installed after projected depth；C, using suitable Freezing Station refrigerating capacity and freeze liquid temperature degree to frost wall carry out freeze safeguard；D, freeze the soil body inside crater wall to underground three-dimensional garage scope and carry out excavation section by section and initial support；E, waterproof layer, and secondary supporting structure of constructing are laid on the inside of initial support structure；F, in freezing pipe interior circulation high-temp liquid frost wall is thawed, removes freezing pipe, to after initial support structural walls, the defrosting soil body and freezing hole carry out grouting filling and reinforcing；The construction method technological process is simple and easy to apply, with low cost, high safety, and space needed for construction is small, and construction speed is fast, with wide applicability.
Description
Technical field
The invention belongs to underground structrue engineering construction method technical field, more particularly to a kind of underground three-dimensional garage crater wall knot
Structure frozen construction method.
Background technology
With the fast development of national economy and the level of urbanization, domestic automobile recoverable amount sharp increase, and major part is old
Old cell is not enough due to remote the looking forward or upwards property of early stage design, and the parking stall or garage of limited quantity have only been reserved on ground, has not been configured down
Garage parking, but limited ground parking position can not meet the cities and towns storing cycle demand of sustainable growth, especially big and medium-sized cities
Disorderly to stop to leave about problem especially serious for the vehicle of old cell near school, cause traffic congestion in cell, Frequent Accidents, vehicle and
A series of problems, such as personnel's trip is difficult.
Underground three-dimensional garage has the advantages that floor space is small, do not influence ground environment, parking capacity big, is that solution is old
The difficult effective ways of residential quarter (especially Dense crowd cell) storing cycle.But between most of old cell structures
Away from smaller, public using narrow space, and ground structures load drastically influence hole in underground three-dimensional garage digging process
The stability of wall construction.To ensure that underground three-dimensional garage excavates crater wall soil stabilization, conventional method is outside excavation face contour line
The artificial structure such as the stake of side construction maintenance or ground-connecting-wall, but the safe excavation depth that can ensure that of this method be usually no more than 30~
50m, and larger ground construction space is needed, for public domain is narrow and small, earth formation is weak, stratum watery strong and periphery
For built-up complex engineering geology and engineering-environment, its safe excavation depth is more shallow, even if increased care structural strength
And dynamics, it is possible to causing in digging process crater wall and bottom plate infiltration water, ground cracking, structures to tilt or cave in etc. engineering
Accident.Therefore, traditional supporting construction and construction method are difficult to meet modern society to Large Copacity, big depth and complex engineering
The demand of underground three-dimensional garage Security Construction under matter environment.
The content of the invention
It is an object of the invention to provide a kind of underground three-dimensional garage crater wall structure frozen construction method, it is ensured that underground stereo car
Crater wall Stability Analysis of Structures in the digging process of storehouse, prevents that excavating crater wall and bottom plate oozes water burst, increases underground garage cutting depth, enhancing ground
Lower garage the complex engineering environment such as rich water, weakness, narrow space applicability, so as to improve Urban Underground land resources utilization
Rate, alleviates urban ground parking difficult.
The technical solution adopted for the present invention to solve the technical problems is：A kind of underground three-dimensional garage crater wall structure is freezed to apply
Work method, its Specific construction step is：A, basis can utilize ground areas and garage capacity design underground garage geometry shape
Formula and size, design Frozen wall thickness, initial support structure, secondary supporting structure and freezing parameterses by force analysis, work as hole
When effectively natural water-resisting floor being not present in the range of the wall depth of freezing, an artificial bottom plate water proof of being constructed below garage bottom plate
Layer；B, using each freezing borehole of drilling machine construction, when drilling reaches freezing pipe is installed after projected depth；C, utilize Freezing Station and circulation
System circulates sharp freezing liquid in each freezing pipe, and the freezing pipe periphery soil body is freezed, up to freezing for adjacent freezing hole
Sharp side Jiao Quan, Frozen wall thickness and temperature reach design load, then use suitable Freezing Station refrigerating capacity and freeze liquid temperature degree pair
Frost wall carries out freezing to safeguard；D, freeze the soil body inside crater wall to underground three-dimensional garage scope and carry out excavation section by section, present segment
After the completion of soil excavation, initial support structure of being constructed on the inside of frost wall, the other sections soil bodys and application are excavated successively, and its is first
Supporting construction, initial support is carried out using identical method to garage bottom plate；E, on the inside of initial support structure waterproof layer is laid,
And secondary supporting structure of constructing；F, in freezing pipe interior circulation high-temp liquid frost wall is thawed, freezing pipe is removed, to first
After supporting construction wall, the defrosting soil body and freezing hole carry out grouting filling and reinforcing, especially supporting construction infiltration position.
Beneficial effect of the present invention:The construction method technological process is simple and easy to apply, with low cost, high safety, needed for construction
Space is small, and construction speed is fast, with wide applicability；This method guarantees that crater wall structure in underground three-dimensional garage digging process
It is stable, prevent that excavating crater wall and bottom plate oozes water burst, increases underground garage cutting depth, enhance underground garage in rich water, soft
The applicability of the complex engineering environment such as weak, narrow space, so as to improve Urban Underground land resources utilization rate, alleviates city
Ground parking is difficult.
Brief description of the drawings：
Fig. 1 is the frozen construction underground three-dimensional garage crater wall longitudinal sectional drawing of the present invention.
Fig. 2 is the frozen construction underground three-dimensional garage crater wall transverse cross-sectional view of the present invention.
Fig. 3 is the natural water-resisting floor schematic diagram of frozen construction underground three-dimensional garage crater wall of the present invention.
Fig. 4 is the artificial water-resisting floor schematic diagram of frozen construction underground three-dimensional garage crater wall of the present invention.
Fig. 5 is the freezing pipe schematic diagram of the present invention.
In figure：1. freezing pipe；2. frost wall；3. initial support structure；4. waterproof layer；5. secondary supporting structure；6. it is natural
Water-resisting floor；7. artificial water-resisting floor；11. water inlet；12. delivery port.
Embodiment：
A kind of underground three-dimensional garage crater wall structure frozen construction method, its Specific construction step is：
A, Shanghai cell square can need to build 100 ground using a circularly band of the planar range for radius R=11m
Lower parking stall, parks 4 car calculating, underground garage depth 62.5m, borehole wall headroom radius is R=by every layer height 2.5m, individual layer
8m.There is a natural water barrier in 80~90m depths, ground is without obvious preloading, stratum clay natural density 2800kg/m3、-
Uniaxial compressive strength 2.0MPa at 20 DEG C.Maximum vertical stress 1.75MPa, horizontal stress 0.58MPa, according to safety coefficient 1.5
Determine Frozen wall thickness 1.0m, initial support concrete thickness 0.45m, waterproof layer select PVC plastic splash guard, secondary supporting
Concrete thickness 0.55m.Because natural water barrier is deeper, expense is greatly increased when the depth of freezing is more than 80m, therefore, 63~
Using churning method one artificial water barrier of construction in 68m depth boundses, depth of freezing 70m, individual pen freeze tube pitch 1.0m, frost wall
- 20 DEG C of temperature.
B, using each freezing borehole of QDG-200 drilling machine constructions, drilling is located at the circumference at garage center, radius R=10m
On, bore diameter 101mm installs freezing pipe when drilling reaches 70m, freezing pipe by diameter 5cm water injection pipe and diameter 91mm
Return pipe composition.
C, using Freezing Station circulating brine is cooled to -50 DEG C, using pumping circulation system in each freezing pipe water inlet pipe
Hypothermic saline is injected, salt solution is then returned to Freezing Station by outlet pipe, by hypothermic saline and to freezing pipe periphery soil body heat
Exchange is freezed to the freezing pipe periphery soil body, until the freezing front of the soil body hands over circle, the thickness of frost wall between adjacent freezing hole
1.0m and -20 DEG C are respectively reached with temperature, then frost wall is carried out using suitable Freezing Station refrigerating capacity to freeze to safeguard.
D, freeze the soil body inside crater wall to underground three-dimensional garage scope and carry out excavation section by section by the high 2.0m of section, excavate radius R
After the completion of the secondary soil excavation of=9m present segments under the protective effect of frost wall, initial support concrete of being constructed on the inside of frost wall
Structure, after its intensity reaches the 70% of maximum intensity, excavates the next section soil body and applies its initial support structure successively；Adopt
With identical method first concrete supporting structure is excavated and is applied to subsequent segment time and garage bottom plate.
E, the laying PVC plastic splash guard on the inside of initial support structure, and in bottom slab concreting secondary supporting concrete, use
Slip-form construction borehole wall secondary supporting concrete.
F, in 50 DEG C of high temperature salt solution of freezing pipe interior circulation brine temp, frost wall is thawed, remove freezing pipe, to first
After secondary supporting construction wall, the defrosting soil body and freezing hole carry out grouting filling and reinforcing, especially supporting construction infiltration position, until
The borehole wall is without infiltration.
Claims (8)
1. a kind of underground three-dimensional garage crater wall structure frozen construction method, its Specific construction steps characteristic is as follows：A, basis can profits
With ground areas and garage capacity design underground garage geometry form and size, wall thickness is freezed by force analysis design
Degree, initial support structure, secondary supporting structure and freezing parameterses, are not present effectively natural bottom plate in the range of the crater wall depth of freezing
During water barrier, an artificial water-resisting floor of being constructed below garage bottom plate；B, using each freezing borehole of drilling machine construction, when drilling reaches
Freezing pipe is installed after to projected depth；C, using Freezing Station and the circulatory system sharp freezing liquid is circulated in each freezing pipe, to freezing
The knot pipe periphery soil body is freezed, until the freezing front of adjacent freezing hole hands over circle, Frozen wall thickness and temperature to meet design load,
Then frost wall is carried out to freeze to safeguard with liquid temperature degree is freezed using suitable Freezing Station refrigerating capacity；D, to underground three-dimensional garage model
Enclose and freeze soil body progress excavation section by section inside crater wall, after the completion of the secondary soil excavation of present segment, first branch of being constructed on the inside of frost wall
Protection structure, is excavated the other sections soil bodys and applies its initial support structure, garage bottom plate is carried out using identical method successively
Initial support；E, waterproof layer, and secondary supporting structure of constructing are laid on the inside of initial support structure；It is f, high in freezing pipe interior circulation
Geothermal liquid thaws to frost wall, removes freezing pipe, to after initial support structural walls, the defrosting soil body and freezing hole carry out slip casting
Filling and reinforcing, especially supporting construction infiltration position.
2. a kind of underground three-dimensional garage crater wall structure frozen construction method according to claim 1, it is characterised in that：It is described
Frost wall freezing method includes any means of freezing and forms Freezing stratum as rapid band.
3. a kind of underground three-dimensional garage crater wall structure frozen construction method according to claim 1, it is characterised in that：It is described
Underground three-dimensional garage section can be random geometry and size.
4. a kind of underground three-dimensional garage crater wall structure frozen construction method according to claim 1, it is characterised in that：It is described
Freezing pipe can be random length and spacing in freezing parameterses, and need to enter that garage bottom is natural or artificial water-resisting floor.
5. a kind of underground three-dimensional garage crater wall structure frozen construction method according to claim 1, it is characterised in that：It is described
Freezing pipe can be any good heat conducting material tubing.
6. a kind of underground three-dimensional garage crater wall structure frozen construction method according to claim 1, it is characterised in that：It is described
It can be the liquid that any low temperature does not solidify to freeze liquid.
7. a kind of underground three-dimensional garage crater wall structure frozen construction method according to claim 1, it is characterised in that：It is described
Initial support structure and secondary supporting structure can be any material with supporting intensity and structure.
8. a kind of underground three-dimensional garage crater wall structure frozen construction method according to claim 1, it is characterised in that：It is described
Waterproof layer can be any material with impervious function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710406345.0A CN106968259A (en) | 2017-06-01 | 2017-06-01 | A kind of underground three-dimensional garage crater wall structure frozen construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710406345.0A CN106968259A (en) | 2017-06-01 | 2017-06-01 | A kind of underground three-dimensional garage crater wall structure frozen construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106968259A true CN106968259A (en) | 2017-07-21 |
Family
ID=59327473
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710406345.0A Withdrawn CN106968259A (en) | 2017-06-01 | 2017-06-01 | A kind of underground three-dimensional garage crater wall structure frozen construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035335A (en) * | 2017-09-30 | 2018-05-15 | 中煤第五建设有限公司 | A kind of construction freezing method well shaft type underground parking garage method |
| US20180363315A1 (en) * | 2015-12-18 | 2018-12-20 | Yong Man Lee | Vehicle repair dock |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03257298A (en) * | 1990-03-06 | 1991-11-15 | Takenaka Komuten Co Ltd | Construction method of large-depth large-scale underground space by ground freezing method and ground freezing pipe therefor |
| CN101634148A (en) * | 2009-08-05 | 2010-01-27 | 朱奎 | Soil nailing wall foundation pit support and construction method |
| CN102839670A (en) * | 2011-06-22 | 2012-12-26 | 上海市政工程设计研究总院（集团）有限公司 | Shallow foundation pit freezing enclosure and construction method thereof |
| CN105040710A (en) * | 2015-07-04 | 2015-11-11 | 朱奎 | Support structure for bilge well construction |
| CN204959768U (en) * | 2015-09-15 | 2016-01-13 | 中国民航大学 | A underground structure for airport |
-
2017
- 2017-06-01 CN CN201710406345.0A patent/CN106968259A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03257298A (en) * | 1990-03-06 | 1991-11-15 | Takenaka Komuten Co Ltd | Construction method of large-depth large-scale underground space by ground freezing method and ground freezing pipe therefor |
| CN101634148A (en) * | 2009-08-05 | 2010-01-27 | 朱奎 | Soil nailing wall foundation pit support and construction method |
| CN102839670A (en) * | 2011-06-22 | 2012-12-26 | 上海市政工程设计研究总院（集团）有限公司 | Shallow foundation pit freezing enclosure and construction method thereof |
| CN105040710A (en) * | 2015-07-04 | 2015-11-11 | 朱奎 | Support structure for bilge well construction |
| CN204959768U (en) * | 2015-09-15 | 2016-01-13 | 中国民航大学 | A underground structure for airport |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180363315A1 (en) * | 2015-12-18 | 2018-12-20 | Yong Man Lee | Vehicle repair dock |
| US10612259B2 (en) * | 2015-12-18 | 2020-04-07 | Yong Man Lee | Vehicle repair dock |
| CN108035335A (en) * | 2017-09-30 | 2018-05-15 | 中煤第五建设有限公司 | A kind of construction freezing method well shaft type underground parking garage method |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170721 |
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| WW01 | Invention patent application withdrawn after publication |