CN106592607A - Steel bar embedding, net hanging and guniting supporting construction method of deep foundation pit - Google Patents
Steel bar embedding, net hanging and guniting supporting construction method of deep foundation pit Download PDFInfo
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- CN106592607A CN106592607A CN201710145363.8A CN201710145363A CN106592607A CN 106592607 A CN106592607 A CN 106592607A CN 201710145363 A CN201710145363 A CN 201710145363A CN 106592607 A CN106592607 A CN 106592607A
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- steel bar
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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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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a steel bar embedding, net hanging and guniting supporting construction method of a deep foundation pit. The method is characterized in that the construction method comprises the following steps that (1) a second-stage slope is excavated; (2) steel bar embedding anchor rods are injected; (3) a steel bar framework is mounted; (4) an upper anchor nail is mounted; (5) a concrete pavement is sprayed; (6) a drainage ditch is excavated; and (7) a return slope is made. The method has the beneficial effects that the method is simple; the operation environment requirement is low; construction is convenient; a soil body can be effectively reinforced, and safety problems can be prevented from being brought by building and structure settling; and the aims of green construction and engineering cost reduction can be achieved, the engineering quality and speed can be increased, and large-area use and popularization are facilitated.
Description
Technical field
The invention belongs to building structure support technology field, more particularly to a kind of deep basal pit bar planting shotcrete with steel bar nets supporting construction
Method.
Background technology
In current building trade, especially civil buildings and business public building, building covers higher and higher, and distance is also increasingly
Closely, have Deep Foundation Pit Supporting Project substantially, but at present, China's overwhelming majority underground engineering using campshed supporting,
The support patterns such as diaphram wall.Have the disadvantage that New Buildings, structures are closer to the distance apart from built construction thing, structures, it is former
Wind pressure that building, structures cause because of earth lateral pressure, typhoon, heavy rain and base pit dewatering spring up loss with quicksand and
The irremediable future troubles such as the uneven lower floor of inhering architecture, cracking, the deformation that cause；Other existing method for protecting support construction work
Skill is complicated, and the cycle is long, and engineering cost is higher, affects engineering safety, quality, progress.
Therefore, a kind of method of operating how is invented simple, easy construction, operating environment requirement is low, with low cost, it is convenient big
The construction method for supporting that area is promoted the use of, is the current technical issues that need to address of those skilled in the art.
The content of the invention
To overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of deep basal pit bar planting shotcrete with steel bar nets supporting construction
Method, method is simple, and operating environment requires low, easy construction, can effective soil mass consolidation, prevent building, structure sedimentation
Safety problem is brought, engineering cost can be reduced again, facilitate spread to use.
For achieving the above object, the present invention is adopted the following technical scheme that：A kind of deep basal pit bar planting shotcrete with steel bar nets supporting construction
Method, is characterized in that the construction method is carried out in accordance with the following steps：
(1) two grades of slopes are excavated：When New Buildings, structures have a deep-foundation pit engineering, and apart from built construction thing, construct
When thing is closer to the distance, to prevent built construction thing, structure sedimentation, cracking, displacement or the earthwork from caving in, in the earthwork 1 is adopted:0.5
Excavate two grades of slopes；
(2) bar planting anchor pole is injected：Using 14～20mm of diameter, L=4500～6000mm@1000,150～200mm of aperture,
Hole body inclines 15 degree of angles, injection 1 with the soil body:3 cement mortar are reinforced as bar planting anchor pole；
(3) framework of steel reinforcement is installed：Using the elongated reinforcing bar of 2 14～16mm of diameter ,@1000mm are used as framework of steel reinforcement；
(4) top holdfast is installed：Using 16～18mm of diameter, L=1000～1500mm@1000 squeeze into soil layer as top
Holdfast 1, in soil body surface the two-way reinforced mesh of 6.5/8@200 is hung；
(5) gunite concrete surface layer：Thick using 80～100, intensity is that C20 rice stone concretes point two-layer is sprayed as face
Layer；
(6) gutter is excavated：Mouth excavates gutter under foundation ditch；
(7) slope is returned：Do 5% and return slope in foundation ditch top.
Compared with prior art, it is an advantage of the invention that method is simple, operating environment requires low, easy construction, Ji Nengyou
Effect soil mass consolidation, prevents built construction thing, structure sedimentation from bringing safety problem, can reach green construction again, reduce engineering into
This purpose, improves construction quality and progress, facilitates spread to use.
Description of the drawings
Below in conjunction with the accompanying drawings the invention will be further described.
Fig. 1 is that a kind of deep basal pit bar planting shotcrete with steel bar nets supporting construction technical method implements schematic diagram.
In figure：1- tops holdfast 2- reinforced mesh 3- concrete 4- bar planting anchor pole 5- reinforcing bar 6- gutter 7- return slope
Bis- grades of slope 9- built construction things of 8-, structures 10- New Buildings, structures.
Specific embodiment
With reference to embodiment, the invention will be further described.
Embodiment
As shown in figure 1, a kind of deep basal pit bar planting shotcrete with steel bar nets construction method for supporting, is characterized in the construction method according to such as
Lower step is carried out：
(1) two grades of slopes are excavated：When New Buildings, structures 10 have deep-foundation pit engineering, and apart from built construction thing, structure
Build thing 9 it is closer to the distance when, to prevent, built construction thing, structures 9 from settling, ftractureing, displacement or the earthwork are caved in, and in the earthwork 1 is adopted:
0.5 excavates two grades of slopes 8；
(2) bar planting anchor pole is injected：Using 14～20mm of diameter, L=4500～6000mm@1000,150～200mm of aperture,
Hole body inclines 15 degree of angles, injection 1 with the soil body:3 cement mortar are reinforced as bar planting anchor pole 4；
(3) framework of steel reinforcement is installed：Using the elongated reinforcing bar 5 of 2 14～16mm of diameter ,@1000mm are used as framework of steel reinforcement；
(4) top holdfast is installed：Using 16～18mm of diameter, L=1000～1500mm@1000 squeeze into soil layer as top
Holdfast 1, in soil body surface the two-way reinforced mesh 2 of 6.5/8@200 is hung；
(5) gunite concrete surface layer：Thick using 80～100mm, strength grade is the 3 points of two-layer injections of C20 rice stone concretes
As surface layer；
(6) gutter is excavated：Mouth excavates gutter 6 under foundation ditch；
(7) slope is returned：Do 5% and return slope 7 in foundation ditch top.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, although with reference to the foregoing embodiments
The present invention is described in detail, for a person skilled in the art, it still can be to foregoing embodiments institute
The technical scheme of record is modified, or carries out equivalent replacement to which part technical characteristic.It is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (1)
1. a kind of deep basal pit bar planting shotcrete with steel bar nets construction method for supporting, it is characterised in that the construction method is entered in accordance with the following steps
OK：
1) two grades of slopes are excavated：When New Buildings, structures (10) have a deep-foundation pit engineering, and apart from built construction thing, construct
When thing (9) is closer to the distance, to prevent built construction thing, structures (9) sedimentation, cracking, displacement or the earthwork from caving in, adopt in the earthwork
1:0.5 excavates two grades of slopes (8)；
2) bar planting anchor pole is injected：Using 14～20mm of diameter, L=4500～6000mm@1000,150～200mm of aperture, hole body
15 degree of angles, injection 1 are inclined with the soil body:3 cement mortar are reinforced as bar planting anchor pole (4)；
3) framework of steel reinforcement is installed：Using the elongated reinforcing bar (5) of 2 14～16mm of diameter ,@1000mm are used as framework of steel reinforcement；
4) top holdfast is installed：Using 16～18mm of diameter, L=1000～1500mm@1000 squeeze into soil layer as top holdfast
(1), the two-way reinforced mesh of 6.5/8@200 (2) is hung in soil body surface；
5) gunite concrete surface layer：Thick using 80～100mm, strength grade is C20 rice stone concretes (3) point two-layer injection conduct
Surface layer；
6) gutter is excavated：Mouth excavates gutter (6) under foundation ditch；
7) slope is returned：Do 5% and return slope (7) in foundation ditch top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145363.8A CN106592607A (en) | 2017-03-13 | 2017-03-13 | Steel bar embedding, net hanging and guniting supporting construction method of deep foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145363.8A CN106592607A (en) | 2017-03-13 | 2017-03-13 | Steel bar embedding, net hanging and guniting supporting construction method of deep foundation pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106592607A true CN106592607A (en) | 2017-04-26 |
Family
ID=58588013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710145363.8A Pending CN106592607A (en) | 2017-03-13 | 2017-03-13 | Steel bar embedding, net hanging and guniting supporting construction method of deep foundation pit |
Country Status (1)
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| CN (1) | CN106592607A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108797604A (en) * | 2018-06-13 | 2018-11-13 | 王海霖 | A kind of protection network and liquid nitrogen frozen soil wall composite support implementation and its supporting construction |
| CN110761300A (en) * | 2019-11-08 | 2020-02-07 | 中国十七冶集团有限公司 | Construction method for supporting impervious soft soil body on side slope of deep foundation pit of high-rise building through micro-expansion |
| CN111549784A (en) * | 2020-05-26 | 2020-08-18 | 武汉金涛岩土工程有限公司 | Construction process of foundation pit adjacent to building |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007051541A (en) * | 2005-07-19 | 2007-03-01 | Kanuka Design:Kk | Retaining wall and construction method therefor |
| CN104213564A (en) * | 2014-09-04 | 2014-12-17 | 中建四局第六建筑工程有限公司 | Excavation slope supporting structure and construction method thereof |
-
2017
- 2017-03-13 CN CN201710145363.8A patent/CN106592607A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007051541A (en) * | 2005-07-19 | 2007-03-01 | Kanuka Design:Kk | Retaining wall and construction method therefor |
| CN104213564A (en) * | 2014-09-04 | 2014-12-17 | 中建四局第六建筑工程有限公司 | Excavation slope supporting structure and construction method thereof |
Non-Patent Citations (3)
| Title |
|---|
| 丁金海: "苏州粤海商业广场3_8_基坑支护工程实录", 《地质与勘探》 * |
| 刘广等: "土钉支护在深圳一深基坑工程中的应用", 《土工基础》 * |
| 郭志飚等: "《地下工程稳定性控制及工程实例》", 31 May 2015 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108797604A (en) * | 2018-06-13 | 2018-11-13 | 王海霖 | A kind of protection network and liquid nitrogen frozen soil wall composite support implementation and its supporting construction |
| CN110761300A (en) * | 2019-11-08 | 2020-02-07 | 中国十七冶集团有限公司 | Construction method for supporting impervious soft soil body on side slope of deep foundation pit of high-rise building through micro-expansion |
| CN110761300B (en) * | 2019-11-08 | 2021-04-09 | 中国十七冶集团有限公司 | Construction method for supporting impervious soft soil body on side slope of deep foundation pit of high-rise building through micro-expansion |
| CN111549784A (en) * | 2020-05-26 | 2020-08-18 | 武汉金涛岩土工程有限公司 | Construction process of foundation pit adjacent to building |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170426 |
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| RJ01 | Rejection of invention patent application after publication |