CN109505295A - Diaphram wall joint seal freezes construction technology - Google Patents
Diaphram wall joint seal freezes construction technology Download PDFInfo
- Publication number
- CN109505295A CN109505295A CN201811376314.6A CN201811376314A CN109505295A CN 109505295 A CN109505295 A CN 109505295A CN 201811376314 A CN201811376314 A CN 201811376314A CN 109505295 A CN109505295 A CN 109505295A
- Authority
- CN
- China
- Prior art keywords
- freezing
- temperature
- pipe
- construction
- brine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
Abstract
The present invention relates to a kind of diaphram wall joint seals to freeze construction technology, its step: 1. freezings, temp measuring system installation: refrigeration system installs cooling tower, freezing unit, brine pump respectively, brine pump connection freezing unit, freezing unit are connect by cooling tower with freezing pipe；Temp measuring system installs thermometer and fresh water pump, and fresh water pump is connect by thermometer with temperature tube；Freezing pipe, temperature tube are transferred together to seam edge；2. freezing construction: refrigeration system and temp measuring system are opened, through in liquid supply pipe injection freezing pipe, freezing pipe, which starts the cycle over the salt water abutment joint soil body, to be freezed after brine freezing is handled；Temperature in clear water the real time measure pipe is recycled in temperature tube simultaneously, until the freezing parameters that temperature measuring reaches setting complete freezing construction.The present invention has treatment effeciency high, and water-stagnating effect is significant, can effectively solve the leakage problems of diaphram wall seam crossing.
Description
Technical field
The present invention relates to a kind of diaphram wall joint seal construction technology, especially a kind of diaphram wall joint seal
Freeze construction technology.
Background technique
Diaphram wall is in the case where mud off, to excavate a long and narrow deep trouth in ground special equipment,
Steel reinforcement cage and placing concrete are placed in slot, form one section of reinforced concrete wall section.Each section of wall sequentially construct and connect it is integral,
Form a continuous underground wall body.Its role is to antiseepage, earth-retaining when excavation of foundation pit, the supporting of close to buildings, Yi Jizuo
Based on a part.Since construction of diaphragm wall is unable to one-pass molding, framing is needed to construct, exists between every width and connect
Seam, in excavation construction, seam crossing gushes husky risk there are water burst, therefore it is also difficult point that its joint treatment, which is emphasis,.Refrigeration Technique is big
It is chiefly used in Tunnel Engineering soil stabilization, it can reinforce the freezing soil of a certain range and depth, and consolidation effect is substantially better than
Other reinforcement measures.Refrigeration Technique applies to the processing of diaphram wall joint seal, no matter in sealing range or water-stagnating effect
The quality requirement of seam can effectively be met.
Summary of the invention
In order to overcome the construction qualities such as traditional diaphram wall joint seal reinforcing area is insufficient, water-stagnating effect is bad to ask
Topic, affects the shortcomings that entire diaphram wall goes along with sb. to guard him quality, and the present invention provides a kind of diaphram wall joint seal freezing and applies
Work technique, during which can effectively solve construction of diaphragm wall, the water burst of adjacent slot section seaming position gushes husky and construction
Mass defect problem,.
The technical scheme adopted by the invention is that: a kind of diaphram wall joint seal freezing construction technology, including it is as follows
Step:
(1) freezing, temp measuring system installation
Refrigeration system installs cooling tower, freezing unit, brine pump, brine pump connection freezing unit respectively, and freezing unit leads to
Supercooling tower is connect with freezing pipe；Temp measuring system installs thermometer and fresh water pump, and fresh water pump is connected by thermometer and temperature tube
It connects；Freezing pipe, temperature tube are transferred together to seam edge；
(2) freezing construction
Refrigeration system and temp measuring system are opened, through in liquid supply pipe injection freezing pipe, freezing pipe is opened after brine freezing is handled
The beginning circulating brine abutment joint soil body is freezed；Temperature in clear water the real time measure pipe is recycled in temperature tube simultaneously, until temperature is surveyed
Surely the freezing parameters for reaching setting complete freezing construction.
Further, freeze control parameter in the freezing construction are as follows: frozen soil wall thickness >=2.6m, frozen soil mean temperature≤-
10 DEG C, -28 DEG C~-30 DEG C of brine temp, salt water go loop temperature it is poor≤2 DEG C, temperature tube temperature≤- 5 DEG C.
The beneficial effects of the present invention are:
The present invention has treatment effeciency high, and water-stagnating effect is significant, and the leakage that can effectively solve diaphram wall seam crossing is asked
Topic.Diaphram wall joint seal excellent effect after this bright freezing construction, is greatly improved construction efficiency, it is ensured that go along with sb. to guard him
Engineering is fulfiled ahead of schedule on schedule.
Detailed description of the invention
The schematic diagram of system installation Fig. 1 of the invention；
Fig. 2 is the bottom view of Fig. 1.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate this hair
It is bright rather than limit the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, art technology
Personnel can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Fixed range.
As shown in figures 1 and 2, a kind of diaphram wall joint seal freezes construction technology, and its step are as follows:
(1) freezing, temp measuring system installation
Refrigeration system installs cooling tower 3, freezing unit 4, brine pump 5, the connection freezing unit 4 of brine pump 5, refrigerator respectively
Group 4 is connect by cooling tower 3 with freezing pipe 1；Temp measuring system installs thermometer 6 and fresh water pump 7, and fresh water pump 7 passes through thermometer 6
It is connect with temperature tube 2；Freezing pipe 1, temperature tube 2 are transferred together to seam edge.
(2) freezing construction
Refrigeration system and temp measuring system are opened, through in liquid supply pipe injection freezing pipe, freezing pipe is opened after brine freezing is handled
The beginning circulating brine abutment joint soil body is freezed；Temperature in clear water the real time measure pipe is recycled in temperature tube simultaneously, until temperature is surveyed
Surely the freezing parameters for reaching setting complete freezing construction.
Freeze control parameter in freezing construction are as follows: frozen soil wall thickness >=2.6m, frozen soil mean temperature≤- 10 DEG C, salt water temperature
Degree -28 DEG C~-30 DEG C, salt water go loop temperature it is poor≤2 DEG C, temperature tube temperature≤- 5 DEG C.
Embodiment:
Shanghai sponge city conveyance system vertical shaft is located at Shanghai City downtown, and surface state is complicated, and the net depth of vertical shaft is
66m, net diameter 50m, specific digging diameter are 56m, cutting depth 72m, digging diameter peripheral hardware 1800mm diaphram wall
One circle is used as excavation supporting.Since diaphram wall framing is constructed, sealing closure is carried out to this seam using freezing process.Tool
Body construction method are as follows: in the construction diaphram wall descending reinforcing cage period of the day from 11 p.m. to 1 a.m, freezing pipe, temperature tube arrive the soil body with reinforcing steel bar cage is same at present
In, after diaphram wall reaches design strength, freezing pipe, which starts the cycle over the salt water abutment joint soil body, to be freezed.Freeze 7 days
Salt water minimum temperature reaches -18 DEG C hereinafter, actively freeze-off time completion seam freezing construction in 35 days.
Diaphram wall joint seal excellent effect, substantially increases construction efficiency after chilled construction, it is ensured that goes along with sb. to guard him
Engineering is fulfiled ahead of schedule on schedule.
Claims (2)
1. a kind of diaphram wall joint seal freezes construction technology, which comprises the steps of:
(1) freezing, temp measuring system installation
Refrigeration system installs cooling tower (3), freezing unit (4), brine pump (5) respectively, and brine pump (5) connection freezes unit (4),
Freezing unit (4) is connect by cooling tower (3) with freezing pipe (1)；Temp measuring system installs thermometer (6) and fresh water pump (7),
Fresh water pump (7) is connect by thermometer (6) with temperature tube (2)；Freezing pipe (1), temperature tube (2) are transferred vertically to seam together
Edge；
(2) freezing construction
Refrigeration system and temp measuring system are opened, through in liquid supply pipe injection freezing pipe, freezing pipe starts to follow after brine freezing is handled
The ring salt water abutment joint soil body is freezed；Temperature in clear water the real time measure pipe is recycled in temperature tube simultaneously, until temperature measuring reaches
Freezing parameters to setting complete freezing construction.
2. diaphram wall joint seal according to claim 1 freezes construction technology, it is characterised in that: the freezing is applied
Work freezes control parameter are as follows: frozen soil wall thickness >=2.6m, frozen soil mean temperature≤- 10 DEG C, and -28 DEG C~-30 DEG C of brine temp,
Salt water go loop temperature it is poor≤2 DEG C, temperature tube temperature≤- 5 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811376314.6A CN109505295A (en) | 2018-11-19 | 2018-11-19 | Diaphram wall joint seal freezes construction technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811376314.6A CN109505295A (en) | 2018-11-19 | 2018-11-19 | Diaphram wall joint seal freezes construction technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109505295A true CN109505295A (en) | 2019-03-22 |
Family
ID=65749096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811376314.6A Withdrawn CN109505295A (en) | 2018-11-19 | 2018-11-19 | Diaphram wall joint seal freezes construction technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109505295A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63255420A (en) * | 1987-04-14 | 1988-10-21 | Ohbayashigumi Ltd | Construction work of underground wall |
| CN101418567A (en) * | 2007-10-22 | 2009-04-29 | 上海隧道工程股份有限公司 | Protective cutting construction method for tunnel segment |
| CN102852146A (en) * | 2012-08-21 | 2013-01-02 | 清华大学 | Real-time online individualized heat-exchanging intelligent temperature control system of mass concretes |
| CN105297742A (en) * | 2015-10-22 | 2016-02-03 | 北京城建集团有限责任公司 | Structure and method of water stopping support of underground space |
| CN105887936A (en) * | 2016-05-13 | 2016-08-24 | 中国矿业大学 | Freezing pipe embedding type water sealing method of trench wall connector |
| CN105909260A (en) * | 2016-06-16 | 2016-08-31 | 山东省地矿工程勘察院 | Subway station water stop structure for protecting groundwater environment and construction method thereof |
| CN108071400A (en) * | 2016-11-10 | 2018-05-25 | 上海宝冶集团有限公司 | Horizontal freezing consolidation combines shield driving construction method with steel jacket box |
-
2018
- 2018-11-19 CN CN201811376314.6A patent/CN109505295A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63255420A (en) * | 1987-04-14 | 1988-10-21 | Ohbayashigumi Ltd | Construction work of underground wall |
| CN101418567A (en) * | 2007-10-22 | 2009-04-29 | 上海隧道工程股份有限公司 | Protective cutting construction method for tunnel segment |
| CN102852146A (en) * | 2012-08-21 | 2013-01-02 | 清华大学 | Real-time online individualized heat-exchanging intelligent temperature control system of mass concretes |
| CN105297742A (en) * | 2015-10-22 | 2016-02-03 | 北京城建集团有限责任公司 | Structure and method of water stopping support of underground space |
| CN105887936A (en) * | 2016-05-13 | 2016-08-24 | 中国矿业大学 | Freezing pipe embedding type water sealing method of trench wall connector |
| CN105909260A (en) * | 2016-06-16 | 2016-08-31 | 山东省地矿工程勘察院 | Subway station water stop structure for protecting groundwater environment and construction method thereof |
| CN108071400A (en) * | 2016-11-10 | 2018-05-25 | 上海宝冶集团有限公司 | Horizontal freezing consolidation combines shield driving construction method with steel jacket box |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190322 |
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| WW01 | Invention patent application withdrawn after publication |