CN108755702A - A kind of higher soft soil foundation foundation ditch strengthening processing method of level of ground water - Google Patents
A kind of higher soft soil foundation foundation ditch strengthening processing method of level of ground water Download PDFInfo
- Publication number
- CN108755702A CN108755702A CN201810651531.5A CN201810651531A CN108755702A CN 108755702 A CN108755702 A CN 108755702A CN 201810651531 A CN201810651531 A CN 201810651531A CN 108755702 A CN108755702 A CN 108755702A
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- China
- Prior art keywords
- foundation
- steel sheet
- sheet pile
- foundation pit
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Classifications
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in 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
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a kind of higher soft soil foundation foundation ditch strengthening processing methods of level of ground water, and a circle vibro-replacement stone column is first done around foundation pit；Then communicated drainage ditch is done in rubble stake top, by the outer row of infiltration；In broken stone pile both sides inserting piling Larsen steel sheet pile, wherein the steel sheet pile by foundation pit side is equipped with artificial drilling, for draining；After entire steel sheet pile surrounds, inside steel sheet pile and outside plate stake are fixed to drawing using drawing anchor and purlin, and inner support is done in inside steel sheet pile corner；Finally carry out excavation of foundation pit.In the method for the present invention, the laying of broken stone pile so that level of ground water reduces, and drainage of foundation pit pressure and expense reduce；Inside steel sheet pile with holes makes underground water smoothly be discharged；This construction method is under phreatic high, this unfavorable conditions of soft soil foundation, it can be ensured that the stabilization of foundation pit.The treatment method duration is shorter, reduces investment outlay, and providing strength for engineering safety construction ensures.
Description
Technical field
The present invention relates to a kind of foundation reinforcement method, especially a kind of higher soft soil foundation foundation pit of level of ground water adds
Gu processing method is suitable for the soft soil foundation of phreatic high, destroyed for preventing excavation slope seepage stability, reduces foundation pit row
Water rate with and engineering integrally invest, provide sound assurance to the safety and stability of excavation of foundation pit.
Background technology
An important link of the foundation pit as the foundation construction of building, the matter of quality or even whole building to ground
It is all very important for amount.So the excavation of foundation pit is the necessary link of building, it is also very important link, especially
It is the utility value that modern building increasingly tends to develop the underground space, in this case, it should be further noted that foundation pit
It excavates and constructs.During the excavation of foundation pit, the most easy problem is exactly the landslide of foundation pit and for geology knot around
The destruction of structure, no matter all serious normal construction for affecting foundation pit of which kind of situation, construction quality is then influenced, so pre-
Better safeguard procedures are first done, support technology is used as to come into being to solve such case.
With the continuous development and innovation of China's Building technology, during the current foundation pit construction in China through frequently with
Base hole supporting technology can be divided into three categories：That is gravity type support technology, overhang mill technology and brace type support technology.
In Practical Project, be frequently run onto the higher soft soil foundation of level of ground water, have moisture content is high, load-bearing deformation is big,
The features such as low bearing capacity, apparent tau-effect, carries out excavation of foundation pit in the poor ground of such geological conditions, difficulty of construction compared with
Greatly, the accident of such as slope instability threat to life property safety easily occurs.Especially in the position on river periphery, pumping plant, lock are built
When equal buildings, problems are especially prominent.
Common processing method has grouting and reinforcing method, CFG pile composite foundations method, subsidence pressure circle spray reinforcement method, cement at this stage
Reinforcement means and the measure such as soil stirring method for strengthening, discharging consolidation method for strengthening and pile plate wall, steel sheet pile, usually deal with expense
It is work, time-consuming, and caused by construction investment it is larger.
Invention content
The technical problem to be solved by the invention is to provide a kind of higher soft soil foundation foundation ditch strengthening processing of level of ground water
Method avoids level of ground water during excavation of foundation pit excessively high, and under groundwater effect itself seepage failure occurs for weak soil, leads to base
Slope instability is cheated, personnel equipment's safety in foundation pit is influenced, influences construction speed, increase construction investment.
To solve the above-mentioned problems, the technical solution adopted in the present invention is：A kind of higher soft soil foundation of level of ground water
Foundation ditch strengthening processing method first does a circle vibro-replacement stone column around foundation pit；Then communicated drainage ditch is done in rubble stake top, will oozed
It is arranged outside water；In broken stone pile both sides inserting piling Larsen steel sheet pile, wherein the steel sheet pile by foundation pit side is equipped with artificial drilling, for arranging
Water；After entire steel sheet pile surrounds, inside steel sheet pile and outside plate stake are fixed to drawing using drawing anchor and purlin, and in inside
Inner support is done by steel sheet pile corner；Finally carry out excavation of foundation pit.
The vibro-replacement stone column stake diameter 0.6m~0.8m, 3~5m of pilespacing.
Beneficial effects of the present invention：It is low to foundation condition requirement, it is unfavorable to can be applied to soft soil foundation and phreatic high etc.
Under the conditions of, addressing and scheme for building determine that constraint is less, have direct help to reducing investment；It is arranged in advance when construction
Water, lowering of watertable, and excavation of foundation pit is carried out under steel sheet pile protection, construction safety is secure.
Description of the drawings
Fig. 1 is the floor plan of the higher soft soil foundation foundation ditch strengthening processing method of level of ground water of the present invention.
Fig. 2 is steel sheet pile cross-sectional view on the inside of the present invention.
Fig. 3 is outside plate stake cross-sectional view of the present invention.
Specific implementation mode
Invention is further described in detail with reference to the accompanying drawings and detailed description：
As shown in Figs. 1-3, the higher soft soil foundation foundation ditch strengthening processing method of level of ground water of the invention, first in foundation pit 1
Surrounding does a circle vibro-replacement stone column 2；Then communicated drainage ditch 9 is done on the top of broken stone pile 2, by the outer row of infiltration；It is inserted in 2 both sides of broken stone pile
Larsen steel sheet pile is beaten, wherein the steel sheet pile 3 by foundation pit side is equipped with artificial drilling 5, for draining；Entire steel sheet pile surrounds it
Afterwards, 4 pairs of inside steel sheet pile 3 and outside plate stake are drawn and is fixed using drawing anchor 7 and purlin 8, and done in 3 corners of inside steel plate
Inner support 6；Foundation pit 1 is finally carried out to excavate.
The vibro-replacement stone column 2 diameter 0.6m~0.8m, 3~5m of pilespacing.
This method reinforcing and processing method can be applied to the higher excavation in soft soil of level of ground water.The advantages of this method
It is, the laying of broken stone pile so that level of ground water reduces, and drainage of foundation pit pressure and expense reduce；Inside steel sheet pile with holes makes
Underground water is smoothly discharged；This construction method is under phreatic high, this unfavorable conditions of soft soil foundation, it can be ensured that foundation pit it is steady
It is fixed.The treatment method duration is shorter, reduces investment outlay, and providing strength for engineering safety construction ensures.
Embodiment described above is merely to illustrate the technological thought and feature of the present invention, in the art its object is to make
Technical staff it will be appreciated that present disclosure and implement according to this, the patent model of the present invention cannot be only limited with the present embodiment
It encloses, i.e., same changes or modifications made by all disclosed spirit, still falls in the scope of the claims of the present invention.
Claims (2)
1. a kind of higher soft soil foundation foundation ditch strengthening processing method of level of ground water, which is characterized in that first done around foundation pit (1)
One circle vibro-replacement stone column (2)；Then communicated drainage ditch (9) is done on broken stone pile (2) top, by the outer row of infiltration；In broken stone pile (2) both sides
Inserting piling Larsen steel sheet pile, wherein the steel sheet pile (3) by foundation pit side is equipped with artificial drilling (5), for draining；Entire steel sheet pile encloses
At later, inside steel sheet pile (3) and outside plate stake (4) are fixed to drawing using drawing anchor (7) and purlin (8), and in inside steel
Inner support (6) is done by plate (3) stake corner；Foundation pit (1) is finally carried out to excavate.
2. the higher soft soil foundation foundation ditch strengthening processing method of level of ground water according to claim 1, which is characterized in that described
Vibro-replacement stone column (2) stake diameter 0.6m~0.8m, 3~5m of pilespacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810651531.5A CN108755702B (en) | 2018-06-22 | 2018-06-22 | Soft soil foundation pit reinforcing treatment method with higher underground water level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810651531.5A CN108755702B (en) | 2018-06-22 | 2018-06-22 | Soft soil foundation pit reinforcing treatment method with higher underground water level |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108755702A true CN108755702A (en) | 2018-11-06 |
| CN108755702B CN108755702B (en) | 2020-12-29 |
Family
ID=63976386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810651531.5A Active CN108755702B (en) | 2018-06-22 | 2018-06-22 | Soft soil foundation pit reinforcing treatment method with higher underground water level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108755702B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555108A (en) * | 2018-12-25 | 2019-04-02 | 中铁十七局集团有限公司 | A kind of steel sheet pile enclosure constructing structure |
| CN111663547A (en) * | 2020-06-19 | 2020-09-15 | 伍永伶 | Bridge pier cofferdam device for bridge construction |
| CN112523554A (en) * | 2019-12-13 | 2021-03-19 | 吴岩 | Mine wellhead protection device for mine hoist |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966109A (en) * | 2012-11-05 | 2013-03-13 | 天津二十冶建设有限公司 | Method for constructing zonal deep foundation pit bottom sealing of soft soil foundation |
| CN204510230U (en) * | 2015-02-11 | 2015-07-29 | 中铁六局集团有限公司 | Rich groundwater and the bad deep pit digging supporting and protection structure of geology |
| CN205990619U (en) * | 2016-06-15 | 2017-03-01 | 杨飞 | A kind of rich groundwater and geology bad deep pit digging supporting construction |
| CN110219305A (en) * | 2019-06-27 | 2019-09-10 | 云南建投第十二建设有限公司 | The pile making method of supporting construction |
-
2018
- 2018-06-22 CN CN201810651531.5A patent/CN108755702B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966109A (en) * | 2012-11-05 | 2013-03-13 | 天津二十冶建设有限公司 | Method for constructing zonal deep foundation pit bottom sealing of soft soil foundation |
| CN204510230U (en) * | 2015-02-11 | 2015-07-29 | 中铁六局集团有限公司 | Rich groundwater and the bad deep pit digging supporting and protection structure of geology |
| CN205990619U (en) * | 2016-06-15 | 2017-03-01 | 杨飞 | A kind of rich groundwater and geology bad deep pit digging supporting construction |
| CN110219305A (en) * | 2019-06-27 | 2019-09-10 | 云南建投第十二建设有限公司 | The pile making method of supporting construction |
Non-Patent Citations (1)
| Title |
|---|
| 李泽宇等: "碎石桩在基坑降水的筛管作用", 《西部探矿工程》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555108A (en) * | 2018-12-25 | 2019-04-02 | 中铁十七局集团有限公司 | A kind of steel sheet pile enclosure constructing structure |
| CN109555108B (en) * | 2018-12-25 | 2023-09-29 | 中铁十七局集团有限公司 | Steel sheet pile enclosure construction structure |
| CN112523554A (en) * | 2019-12-13 | 2021-03-19 | 吴岩 | Mine wellhead protection device for mine hoist |
| CN111663547A (en) * | 2020-06-19 | 2020-09-15 | 伍永伶 | Bridge pier cofferdam device for bridge construction |
| CN111663547B (en) * | 2020-06-19 | 2022-03-18 | 伍永伶 | Bridge pier cofferdam device for bridge construction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108755702B (en) | 2020-12-29 |
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