CN109208605A - A kind of circulation bottom-sitting type concrete side walls casting method - Google Patents
A kind of circulation bottom-sitting type concrete side walls casting method Download PDFInfo
- Publication number
- CN109208605A CN109208605A CN201710513166.7A CN201710513166A CN109208605A CN 109208605 A CN109208605 A CN 109208605A CN 201710513166 A CN201710513166 A CN 201710513166A CN 109208605 A CN109208605 A CN 109208605A
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- China
- Prior art keywords
- concrete
- layer
- underground space
- formwork
- placing
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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
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- 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
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
Abstract
The invention discloses a kind of circulation bottom-sitting type concrete side walls casting methods, comprising the following steps: excavates the underground space of certain depth in advance, and installs formwork for placing outside exposed side wall；A circle concrete is poured between the exposed side wall and template for the underground space dug, and obtains first layer concrete layer；Continue to excavate the underground space downwards, and formwork for placing is installed；The successively casting concrete from the bottom up in mounted template, docks until with the first layer concrete layer completion completed, obtains second layer concrete layer；It repeats the above steps, until the concrete side walls depth poured reaches the underground space depth of design, pouring for underground space underplate concrete can be carried out.The present invention overcomes traditional Base hole supporting technology drawbacks, reduce the risk that collapses, and break through the existing underground space depth limit constructed vertically downward.
Description
Technical field
The present invention relates to technical field of building construction more particularly to a kind of circulation bottom-sitting type concrete side walls casting methods.
Background technique
The underground space be for aboveground space, refer to earth's surface or less by natural or pick appearance at the underground space.
China is populous nation, and occupied area is considerably less per capita.The meaning of the underground space is farmland saving, and urban underground space resource is wide
Wealthy, Urban Underground Space Excavation Utilization prospects are wide.The existing underground space mainly includes underground residential architecture, underground is public builds
It builds, underground industrial building, underground traffic are built, underground is taken precautions against natural calamities, and protective zone, subsurface utility space engineering and underground are comprehensive
Body etc..
When building the underground space, it is necessary to assure side wall stabilization does not collapse.In order to guarantee that side wall stabilization does not collapse, the prior art
The support technology of middle use is multifarious, there is the slope wall support technology of single building, the pipe of pile foundation support technology and subway
Chip technology etc..However above-mentioned support technology is difficult to break through existing depth when constructing Deep underground space perpendicular to horizontal direction
Spend the limit of building.Based on above statement, the invention proposes a kind of circulation bottom-sitting type concrete side walls casting methods.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of circulation bottom-sitting type coagulation proposed
Native side wall casting method.
A kind of circulation bottom-sitting type concrete side walls casting method, comprising the following steps:
S1, reference underground space design drawing, preparatory cutting depth is the underground space of 2~3m, and in the underground dug
Formwork for placing is installed at the outer 500~600mm of the exposed side wall in space；
S2, it will pour and be poured into blender with concrete material and swelling agent, add water and stir after mixing, using automobile
Blanking is pumped, a circle concrete is poured between the exposed side wall and formwork for placing for the underground space dug, uses and vibrates when pouring
Stick vibrates no longer significantly to sink to concrete, obtains first layer concrete layer；
After S3, the first layer concrete layer initial set after be poured in step S2, formwork for placing is removed, the behaviour in step S1 is repeated
Make, continues the underground space that downward cutting depth is 2~3m, and 500~600mm outside the exposed side wall for the underground space dug
Place's installation formwork for placing；
S4, the underground space dug in step s3 side wall and formwork for placing between successively pour coagulation from the bottom up
Soil docks until with the first layer concrete layer completion completed in step S2, obtains second layer concrete layer；
S5, it repeats the above steps, until the concrete side walls depth poured reaches the underground space depth of design, Ji Kejin
Row underground space underplate concrete pours.
Preferably, in the step S1 formwork for placing installation method are as follows: first the underground space dug exposed side wall
Then upper pop-up building axis line pops up middle line by the one side of proximal wall in formwork for placing, splice template and with supporting and diagonal brace branch
Support jail, is finally fixed with scaffold.
Preferably, the vibrating spear in the step S2 totally 4, and the vibration point spacing of vibrating spear is 300~500mm.
Preferably, after the formwork for placing in the step S3 is removed, curing fluid should be sprayed to concrete surface immediately, and cover
Lid insulation film carries out insulated curing.
Preferably, the first layer concrete layer, second layer concrete layer are up to underground space bottom concrete layer
Layer is high identical with thickness.
A kind of circulation bottom-sitting type concrete side walls casting method proposed by the present invention, compared to existing single building
Slope wall support technology, pile foundation support technology and section of jurisdiction technology of subway etc. have construction safety performance high, and support technology is simple
The advantages that single, difficulty of construction is low, and building depth is deep, and construction cost is low, and construction quality is high, the present invention overcomes traditional pattern foundation pit supporting structures
Technology drawback reduces the risk that collapses, and breaks through the existing underground space depth limit constructed vertically downward, is worthy to be popularized.
Specific embodiment
Combined with specific embodiments below the present invention is made further to explain.
Embodiment one
A kind of circulation bottom-sitting type concrete side walls casting method proposed by the present invention, comprising the following steps:
S1, reference underground space design drawing, preparatory cutting depth is the underground space of 2m, first in the underground space dug
Exposed side wall on pop up building axis line, then formwork for placing by proximal wall one side pop up middle line, has dug underground sky
Between the outer 500mm place's splice template of exposed side wall and firm with diagonal brace branch support with supporting, installation finally is fixed with scaffold
Formwork for placing；
S2, it will pour and be poured into blender with concrete material and swelling agent, add water and stir after mixing, using automobile
Blanking is pumped, a circle concrete is poured between the exposed side wall and formwork for placing for the underground space dug, uses and vibrates when pouring
Stick vibrate vibrating spear totally 4, and the vibration point spacing of vibrating spear is 300mm, until concrete no longer significantly sinks, obtains first
Layer concrete layer；
After S3, the first layer concrete layer initial set after pour in step S2, formwork for placing is removed, and in the first layer concrete
Layer surface sprays curing fluid, and covering and heat insulating film carries out insulated curing, repeats the operation in step S1, continues to excavate downwards deep
Degree is the underground space of 2m, and installs formwork for placing at 500mm outside the exposed side wall for the underground space dug；
S4, the underground space dug in step s3 side wall and formwork for placing between successively pour coagulation from the bottom up
Soil docks until with the first layer concrete layer completion completed in step S2, obtains second layer concrete layer；
S5, it repeats the above steps, until the concrete side walls depth poured reaches the underground space depth of design, Ji Kejin
Row underground space underplate concrete pours, and above-mentioned first layer concrete layer, second layer concrete layer are until the underground space most bottom
The layer height of layer concrete layer is identical with thickness.
Embodiment two
A kind of circulation bottom-sitting type concrete side walls casting method proposed by the present invention, comprising the following steps:
S1, reference underground space design drawing, preparatory cutting depth is the underground space of 3m, first in the underground space dug
Exposed side wall on pop up building axis line, then formwork for placing by proximal wall one side pop up middle line, has dug underground sky
Between the outer 600mm place's splice template of exposed side wall and firm with diagonal brace branch support with supporting, installation finally is fixed with scaffold
Formwork for placing；
S2, it will pour and be poured into blender with concrete material and swelling agent, add water and stir after mixing, using automobile
Blanking is pumped, a circle concrete is poured between the exposed side wall and formwork for placing for the underground space dug, uses and vibrates when pouring
Stick vibrate vibrating spear totally 4, and the vibration point spacing of vibrating spear is 500mm, until concrete no longer significantly sinks, obtains first
Layer concrete layer；
After S3, the first layer concrete layer initial set after pour in step S2, formwork for placing is removed, and in the first layer concrete
Layer surface sprays curing fluid, and covering and heat insulating film carries out insulated curing, repeats the operation in step S1, continues to excavate downwards deep
Degree is the underground space of 3m, and installs formwork for placing at 600mm outside the exposed side wall for the underground space dug；
S4, the underground space dug in step s3 side wall and formwork for placing between successively pour coagulation from the bottom up
Soil docks until with the first layer concrete layer completion completed in step S2, obtains second layer concrete layer；
S5, it repeats the above steps, until the concrete side walls depth poured reaches the underground space depth of design, Ji Kejin
Row underground space underplate concrete pours, and above-mentioned first layer concrete layer, second layer concrete layer are until the underground space most bottom
The layer height of layer concrete layer is identical with thickness.
Embodiment three
A kind of circulation bottom-sitting type concrete side walls casting method proposed by the present invention, comprising the following steps:
S1, reference underground space design drawing, preparatory cutting depth are the underground space of 2.5m, first empty in the underground dug
Between exposed side wall on pop up building axis line, then formwork for placing by proximal wall one side pop up middle line, in the underground dug
The outer 550mm place's splice template of the exposed side wall in space is simultaneously firm with diagonal brace branch support with supporting, and peace finally is fixed with scaffold
Fill formwork for placing；
S2, it will pour and be poured into blender with concrete material and swelling agent, add water and stir after mixing, using automobile
Blanking is pumped, a circle concrete is poured between the exposed side wall and formwork for placing for the underground space dug, uses and vibrates when pouring
Stick vibrate vibrating spear totally 4, and the vibration point spacing of vibrating spear is 400mm, until concrete no longer significantly sinks, obtains first
Layer concrete layer；
After S3, the first layer concrete layer initial set after pour in step S2, formwork for placing is removed, and in the first layer concrete
Layer surface sprays curing fluid, and covering and heat insulating film carries out insulated curing, repeats the operation in step S1, continues to excavate downwards deep
Degree is the underground space of 2.5m, and installs formwork for placing at 550mm outside the exposed side wall for the underground space dug；
S4, the underground space dug in step s3 side wall and formwork for placing between successively pour coagulation from the bottom up
Soil docks until with the first layer concrete layer completion completed in step S2, obtains second layer concrete layer；
S5, it repeats the above steps, until the concrete side walls depth poured reaches the underground space depth of design, Ji Kejin
Row underground space underplate concrete pours, and above-mentioned first layer concrete layer, second layer concrete layer are until the underground space most bottom
The layer height of layer concrete layer is identical with thickness.
The slope wall support technology for using single building in the prior art is respectively adopted, from the bottom up the method for placement layer by layer
The underground space of same specification is built with the circulation bottom-sitting type concrete side walls casting method in the embodiment of the present invention one~tri-, it is right
Than it is found that construction period, construction cost and inspection of quality qualification rate in the embodiment of the present invention one~tri- be above the prior art,
Design parameter is as follows:
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of circulation bottom-sitting type concrete side walls casting method, which comprises the following steps:
S1, reference underground space design drawing, preparatory cutting depth is the underground space of 2~3m, and in the underground space dug
The outer place the 500~600mm installation formwork for placing of exposed side wall；
S2, it will pour and be poured into blender with concrete material and swelling agent, add water and stir after mixing, using under automotive pump
Material, a circle concrete is poured between the exposed side wall and formwork for placing for the underground space dug, when pouring with vibrating spear into
Row vibrates no longer significantly to sink to concrete, obtains first layer concrete layer；
After S3, the first layer concrete layer initial set after be poured in step S2, formwork for placing is removed, the operation in step S1 is repeated,
Continue the underground space that downward cutting depth is 2~3m, and outside the exposed side wall for the underground space dug at 500~600mm
Formwork for placing is installed；
S4, the underground space dug in step s3 side wall and formwork for placing between successively casting concrete from the bottom up, directly
It is docked to the first layer concrete layer completion completed in step S2, obtains second layer concrete layer；
S5, it repeats the above steps, until the concrete side walls depth poured reaches the underground space depth of design, can carry out ground
Down space underplate concrete pours.
2. a kind of circulation bottom-sitting type concrete side walls casting method according to claim 1, which is characterized in that the step
The installation method of formwork for placing in S1 are as follows: first pop up building axis line on the exposed side wall for the underground space dug, then pouring
Building mould pops up middle line by the one side of proximal wall, and splice template is simultaneously firm with diagonal brace branch support with supporting, and is finally carried out with scaffold
It is fixed.
3. a kind of circulation bottom-sitting type concrete side walls casting method according to claim 1, which is characterized in that the step
Vibrating spear in S2 totally 4, and the vibration point spacing of vibrating spear is 300~500mm.
4. a kind of circulation bottom-sitting type concrete side walls casting method according to claim 1, which is characterized in that the step
After formwork for placing in S3 is removed, curing fluid should be sprayed to concrete surface immediately, and covering and heat insulating film carries out heat preservation and supports
Shield.
5. a kind of circulation bottom-sitting type concrete side walls casting method according to claim 1, which is characterized in that described first
Layer concrete layer, second layer concrete layer are until the layer of underground space bottom concrete layer is high identical with thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710513166.7A CN109208605A (en) | 2017-06-29 | 2017-06-29 | A kind of circulation bottom-sitting type concrete side walls casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710513166.7A CN109208605A (en) | 2017-06-29 | 2017-06-29 | A kind of circulation bottom-sitting type concrete side walls casting method |
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| Publication Number | Publication Date |
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| CN109208605A true CN109208605A (en) | 2019-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710513166.7A Pending CN109208605A (en) | 2017-06-29 | 2017-06-29 | A kind of circulation bottom-sitting type concrete side walls casting method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761288A (en) * | 2019-10-30 | 2020-02-07 | 中国铁建重工集团股份有限公司 | Concrete pouring method for deep foundation pit |
-
2017
- 2017-06-29 CN CN201710513166.7A patent/CN109208605A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761288A (en) * | 2019-10-30 | 2020-02-07 | 中国铁建重工集团股份有限公司 | Concrete pouring method for deep foundation pit |
| CN110761288B (en) * | 2019-10-30 | 2021-09-10 | 中国铁建重工集团股份有限公司 | Concrete pouring method for deep foundation pit |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190115 |
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| WD01 | Invention patent application deemed withdrawn after publication |