CN209741858U - Freezing supporting construction of big section deep basal pit bottom plate - Google Patents
Freezing supporting construction of big section deep basal pit bottom plate Download PDFInfo
- Publication number
- CN209741858U CN209741858U CN201920242542.8U CN201920242542U CN209741858U CN 209741858 U CN209741858 U CN 209741858U CN 201920242542 U CN201920242542 U CN 201920242542U CN 209741858 U CN209741858 U CN 209741858U
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- China
- Prior art keywords
- freezing
- pipe
- bottom plate
- section deep
- deep basal
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- Expired - Fee Related
Links
- 238000007710 freezing Methods 0.000 title claims abstract description 88
- 230000008014 freezing Effects 0.000 title claims abstract description 85
- 238000010276 construction Methods 0.000 title claims abstract description 10
- 230000000694 effects Effects 0.000 claims abstract description 10
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 31
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 101150054854 POU1F1 gene Proteins 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
the utility model discloses a big section deep basal pit bottom plate freezes supporting construction relates to deep basal pit bottom plate and consolidates waterproof technical field, including setting up in the foundation ditch of big section deep basal pit strut and the outer temporary support of foundation ditch, still including evenly setting up many in big section deep basal pit and freezing the pipe, every it all is equipped with refrigerating plant in the freezing pipe to make under refrigerating plant's effect, the outside formation radius that freezes the pipe is R, highly is the cylinder freezing body of h, and the cylinder freezing body overlaps alternately to form on the cubical space and freezes the bottom plate, the beneficial effects of the utility model are that: under the effect of refrigerating plant, the outside of freezing pipe forms the cylinder freezing body that the radius is R, height are h, and the cylinder freezing body overlaps alternately each other on the cubical space and forms freezing bottom plate, and its intensity is high, has the water-tight effect.
Description
Technical Field
the utility model relates to a deep basal pit bottom plate consolidates waterproof technical field, specifically is a big section deep basal pit bottom plate freezes supporting construction.
Background
Along with the rapid development of economy in China, urban population is rapidly increased, available land of cities is smaller and smaller, a series of urban diseases such as urban road blockage are caused, and the direction of next urban development is to expand deep underground space and fully utilize deep underground space resources to solve the existing problem; in the process of excavating and utilizing the underground space deep foundation pit, the large-section deep foundation pit bottom plate faces to complex environments such as high ground pressure, high water pressure, silt, quicksand layers, soft layers, water-containing rock layers and the like.
The traditional method comprises a water level reduction method, a jet grouting method, a grouting method and the like, so that the construction period is long, the manufacturing cost is high, the safety is poor, and a new supporting method needs to be introduced.
based on the method, the novel method which is safe, environment-friendly, efficient and reliable is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a big section deep basal pit bottom plate freezes supporting construction to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
The utility model provides a big section deep basal pit bottom plate freezes supporting construction, includes to set up in the foundation ditch of big section deep basal pit and strut with the foundation ditch outer temporary support, still including evenly setting up many in big section deep basal pit and freezing the pipe, every it all is equipped with refrigerating plant in the freezing pipe for under refrigerating plant's effect, the outside formation radius of freezing the pipe is R, highly is the cylinder freezing body of h, and the cylinder freezing body overlaps alternately to form on the cubical space and freezes the bottom plate.
As a further aspect of the present invention: each of the freezing pipes is arranged perpendicular to the ground surface.
As a further aspect of the present invention: the bottom of each freezing pipe is in a taper shape.
As a further aspect of the present invention: the refrigerating device comprises a liquid return pipe and a liquid inlet pipe which are arranged in the freezing pipe and kept communicated with each other, wherein the end part of the liquid inlet pipe is connected with the liquid distribution pipe, the liquid distribution pipe is connected with the refrigerating station, the end part of the liquid return pipe is connected with a liquid collecting pipe, and the liquid collecting pipe is connected with the refrigerating station.
As a further aspect of the present invention: the freezing pipe is coated with a heat-insulating layer, and the heat-insulating layer is arranged on the position of the freezing pipe where a cylindrical freezing body is not required to be formed.
Compared with the prior art, the beneficial effects of the utility model are that: under the effect of a refrigerating device, cylindrical freezing bodies with the radius of R and the height of h are formed outside the freezing pipes, the cylindrical freezing bodies are overlapped and crossed with each other in a three-dimensional space to form a freezing bottom plate, the strength is high, the water sealing effect is achieved, after the freezing bottom plate is formed, the freezing pipes are recovered, after the freezing pipes are recovered, freezing holes in the freezing bottom plate are filled with grouting, and then construction is facilitated in a deep foundation pit with a large section.
Drawings
fig. 1 is a schematic structural diagram of a large-section deep foundation pit bottom plate freezing support structure.
Fig. 2 is a schematic structural diagram of a freezing pipe in a large-section deep foundation pit bottom plate freezing support structure.
fig. 3 is a schematic structural diagram of a freezing device in a large-section deep foundation pit bottom plate freezing support structure.
Fig. 4 is a top view of a large-section deep foundation pit floor freezing support structure.
in the figure: 1-large-section deep foundation pit, 2-foundation pit internal support, 3-foundation pit external temporary support, 4-water-containing weak stratum, 5-freezing pipe, 6-freezing bottom plate, 7-insulating layer, 8-liquid return pipe, 9-liquid inlet pipe and 10-freezing ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Please refer to fig. 1-4, in an embodiment of the present invention, a large-section deep foundation pit bottom plate freezing supporting structure, including supporting 2 in the foundation pit and supporting 3 outside the foundation pit in the large-section deep foundation pit 1, further including a plurality of freezing pipes 5 evenly arranged in the large-section deep foundation pit 1, each freezing pipe 5 is internally provided with a freezing device, so that under the effect of the freezing device, the outside of the freezing pipe 5 forms a cylindrical freezing body with radius R and height h, and the cylindrical freezing body overlaps and crosses to form a freezing bottom plate 6 in a three-dimensional space, actually, the freezing bottom plate 6 is formed by freezing water and a water-containing weak stratum 4, has high strength and a water sealing effect, after the freezing bottom plate 6 is formed, the freezing pipes 5 are recovered, and after the freezing pipes 5 are recovered, the freezing holes on the freezing bottom plate 6 are filled with grouting.
Specifically, each of the freezing pipes 5 is arranged perpendicular to the ground surface. Moreover, in order to facilitate the insertion of the freezing pipes 5 into the water-bearing weak stratum 4, the bottom of each freezing pipe 5 is in a taper shape, so as to facilitate the fixation in the water-bearing weak stratum 4.
furthermore, the refrigerating device comprises a liquid return pipe 8 and a liquid inlet pipe 9 which are arranged in the freezing pipe 5 and are kept communicated with each other, wherein the end part of the liquid inlet pipe 9 is connected with the liquid distribution pipe which is connected with the refrigerating station, the end part of the liquid return pipe 8 is connected with the liquid collection pipe, the liquid collection pipe is connected with the refrigerating station, circulating refrigerants are introduced into the liquid return pipe 8 and the liquid inlet pipe 9, the pipelines are connected to form a refrigerant loop, the refrigerating station inputs the refrigerants into the liquid inlet pipe 9, and the refrigerants flow back into the refrigerating station from the liquid return pipe 8 after heat exchange to realize the refrigerating effect.
Example 2
Referring to fig. 2, in the embodiment of the present invention, a large-section deep foundation pit bottom plate freezing supporting structure needs to flexibly control the height h of a cylindrical freezing body in practical application, so that, in this embodiment, the outside of the freezing pipe 5 is wrapped with a heat preservation layer 7, and the heat preservation layer 7 is disposed at a position on the freezing pipe 5 where the cylindrical freezing body does not need to be formed.
With reference to embodiments 1 to 2, in practical application, the technical scheme is generally performed through the following steps:
(1) Processing and manufacturing the freezing pipe;
(2) Then, freezing hole construction is carried out in the large-section deep foundation pit 1 so as to facilitate later-stage freezing pipe installation;
(3) Installing a freezing pipe in the large-section deep foundation pit 1;
(4) Then, a refrigerating device is arranged in the freezing pipe, a liquid return pipe 8 and a liquid inlet pipe 9 are connected as required, and a refrigerating station is started to debug the device;
(5) After the debugging is successful, starting a refrigeration station, forming a cylindrical frozen body with the radius of R and the height of h outside the freezing pipe 5 under the action of a freezing device, and mutually overlapping and crossing the cylindrical frozen body on a three-dimensional space to form a freezing bottom plate 6;
(6) After the freezing bottom plate 6 is formed, the freezing pipe is dismantled and recovered;
(7) And then filling and grouting the freezing holes.
it is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides a big section deep basal pit bottom plate freezes supporting construction, includes and sets up in the foundation ditch of big section deep basal pit (1) strut (2) and foundation ditch outer temporary support (3), its characterized in that still freezes pipe (5), every including evenly setting up many in big section deep basal pit (1) freeze and all be equipped with refrigerating plant in pipe (5) for under refrigerating plant's effect, the outside formation radius that freezes pipe (5) is R, highly is the cylinder freezing body of h, and the cylinder freezing body overlaps mutually on the cubical space alternately forms freezing bottom plate (6).
2. The freezing support structure of the bottom plate of the large-section deep foundation pit as claimed in claim 1, wherein each freezing pipe (5) is arranged perpendicular to the ground surface.
3. The freezing support structure of the bottom plate of the large-section deep foundation pit as claimed in claim 1 or 2, wherein the bottom of each freezing pipe (5) is tapered.
4. The large-section deep foundation pit bottom plate freezing support structure according to claim 3, wherein the freezing device comprises a liquid return pipe (8) and a liquid inlet pipe (9) which are arranged in the freezing pipe (5) and are communicated with each other, wherein the end of the liquid inlet pipe (9) is connected with the liquid distribution pipe, the liquid distribution pipe is connected with the refrigerating station, the end of the liquid return pipe (8) is connected with a liquid collecting pipe, and the liquid collecting pipe is connected with the refrigerating station.
5. The freezing supporting structure of the bottom plate of the large-section deep foundation pit as claimed in claim 1, 2 or 4, wherein the freezing pipe (5) is externally coated with an insulating layer (7), and the insulating layer (7) is arranged on the freezing pipe (5) at a position where a cylindrical frozen body is not required to be formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920242542.8U CN209741858U (en) | 2019-02-26 | 2019-02-26 | Freezing supporting construction of big section deep basal pit bottom plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920242542.8U CN209741858U (en) | 2019-02-26 | 2019-02-26 | Freezing supporting construction of big section deep basal pit bottom plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209741858U true CN209741858U (en) | 2019-12-06 |
Family
ID=68707835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920242542.8U Expired - Fee Related CN209741858U (en) | 2019-02-26 | 2019-02-26 | Freezing supporting construction of big section deep basal pit bottom plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209741858U (en) |
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2019
- 2019-02-26 CN CN201920242542.8U patent/CN209741858U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |