CN107761742A - Along depth direction is multi-form, variable cross-section supporting construction and its construction method - Google Patents
Along depth direction is multi-form, variable cross-section supporting construction and its construction method Download PDFInfo
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- CN107761742A CN107761742A CN201710992319.0A CN201710992319A CN107761742A CN 107761742 A CN107761742 A CN 107761742A CN 201710992319 A CN201710992319 A CN 201710992319A CN 107761742 A CN107761742 A CN 107761742A
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- supporting construction
- construction
- depth direction
- variable cross
- section
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Links
- 238000010276 construction Methods 0.000 title claims abstract description 103
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 7
- 238000012407 engineering method Methods 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses along depth direction is multi-form, variable cross-section supporting construction and its construction method, if including continuously being set downwards from ground and end to end dried layer supporting construction；Supporting construction in every two layers adjacent supporting construction close to hole bottom is arranged in another supporting construction, gap between the initial and tail sections being connected between every two layers of supporting construction be present, and nationality is reinforced by gap reinforcing body.In work progress, supporting is set gradually from up to down, digs deep basal pit and support is set；Corresponding form and the supporting construction in section are selected according to each layer of depth, and set gap reinforcing body to reinforce in the gap between adjacent two layers.The present invention's applies when foundation ditch is built, it can be intended to, along depth direction is multi-form, variable cross-section supporting construction, can significantly reduce supporting construction quantities, effectively expand the construction means of underground engineering, technical progress of industry has been promoted, there are good economical, societal benefits.
Description
Technical field
The present invention relates to foundation ditch building technology field, more particularly to along depth direction is multi-form, variable cross-section supporting construction and
Its construction method.
Background technology
With quickly propelling for urbanization process, the super large ultra-deep basement to emerge in an endless stream, the basis of high-rise building are firm
Degree requirement makes excavation of foundation pit depth more and more deeper.
In the prior art, foundation ditch generally uses Unified Form, the supporting construction in unified section along its depth direction, i.e.,
Foundation ditch digs deep form and the section for determining supporting construction, and this section is clearly excessive for same foundation ditch shallow region
, thus there are a large amount of wastes of supporting construction.
Therefore, it is necessary to be improved to existing foundation ditch mode of construction, to adapt to more and more super large ultra-deep basements, surpass
The soil rigidity requirement and construction speed requirement of skyscraper.
The content of the invention
In view of the drawbacks described above of prior art, the present invention provide along depth direction is multi-form, variable cross-section supporting construction and
Its construction method, the first purpose of realization are that the supporting of different support forms, different cross section is used in foundation ditch different depth scope
Structure, to realize the optimization of supporting construction.
To achieve the above object, the invention discloses along depth direction is multi-form, variable cross-section supporting construction, including from ground
If continuous setting and end to end dried layer supporting construction downwards.Close to the hole in the every two layers adjacent supporting construction
The supporting construction at bottom is arranged inside another supporting construction, the head and the tail being connected between every two layers of supporting construction
Gap between portion be present, and nationality is reinforced by gap reinforcing body.At least a horizontal stroke is provided with inside each supporting construction
To the support of setting.
Preferably, the supporting construction includes the shallow-layer supporting construction close to above ground portion, and the deep layer close to hole bottom
Supporting construction；The shallow-layer supporting construction can use the stake of SMW engineering methods or small-sized cast-in-situ bored pile；The deep support structure can adopt
With diaphram wall large diameter bored pile.
Preferably, the gap reinforcing body is reinforced using high-pressure rotary-spray technique.
The present invention also provides a kind of along depth direction is multi-form, the construction method of variable cross-section supporting construction, and step is as follows：
A, required to set the shallow-layer supporting construction according to foundation ditch；
B, the down-set adjacent supporting construction is required according to foundation ditch, the adjacent supporting construction is according to corresponding
Depth and foundation ditch intensity requirement, select corresponding support form；
C, the soil in the gap between the adjacent supporting construction of each two is added using high-pressure rotary-spray technique
Gu；
D, the junction of the two adjacent supporting construction is excavated to, and described in the corresponding supporting construction setting
Support (11,12,13)；
E, the hole bottom of the foundation ditch is excavated to downwards, and in the supporting construction supporting construction of bottom described in setting
Support (21).
Preferably, when the foundation ditch needs 3 layers of supporting construction described above, repeat step C to D, until being provided with
The layer supporting construction second from the bottom.
Beneficial effects of the present invention：
The present invention is applied when foundation ditch is built, using the teaching of the invention it is possible to provide, can be significantly along depth direction is multi-form, variable cross-section supporting construction
Reduce supporting construction quantities, effectively expanded the construction means of underground engineering, promoted technical progress of industry, there is good warp
Ji, social benefit.
Design, concrete structure and the caused technique effect of the present invention are described further below with reference to accompanying drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Brief description of the drawings
View when Fig. 1 shows to set the superiors' supporting construction in one embodiment of the invention.
View when Fig. 2 shows to set second layer supporting construction in one embodiment of the invention.
Fig. 3 shows to be excavated to the structural representation of the foundation ditch the superiors in one embodiment of the invention.
Fig. 4 shows the structural representation of one embodiment of the invention.
Embodiment
Embodiment
As shown in figure 4, along depth direction is multi-form, variable cross-section supporting construction, including from ground 9 downwards it is continuous set and
If end to end dried layer supporting construction.
Supporting construction in every two layers adjacent supporting construction close to hole bottom 29 is arranged inside another supporting construction, and every two
Gap be present between the initial and tail sections being connected between layer supporting construction, and nationality is reinforced by gap reinforcing body 3.
At least a support 11,12,13,21 laterally set is provided with inside each supporting construction.
In certain embodiments, supporting construction includes the shallow-layer supporting construction 1 close to above ground portion, and close to hole bottom 29
Deep support structure 2；Shallow-layer supporting construction 1 can use the stake of SMW engineering methods or small-sized cast-in-situ bored pile；Deep support structure 2 can
Using diaphram wall or large diameter bored pile.
In certain embodiments, gap reinforcing body 3 is reinforced using high-pressure rotary-spray technique.
In certain embodiments, be arranged on the top shallow-layer supporting construction 1 be provided with three supports 11 laterally set,
12、13。
The present invention also provides a kind of along depth direction is multi-form, the construction method of variable cross-section supporting construction, and step is as follows：
The pattern foundation pit supporting structure that the upper and lower double-layer structure of use as shown in Figure 4 is formed.
First, as shown in figure 1, being required to set shallow-layer supporting construction 1 according to foundation ditch；
Intensity is carried out according to the cutting depth of foundation ditch shallow-layer part and stability is designed, can typically use SMW engineering methods
The support forms such as stake, small-sized cast-in-situ bored pile, the wherein cutting depth of shallow foundation pit can be true according to the arrangement of foundation ditch vertical supporting
It is fixed, it can typically be selected in the basal surface position of certain road support.
Then, as shown in Fig. 2 requiring down-set adjacent supporting construction according to foundation ditch, adjacent supporting construction according to
Corresponding depth and foundation ditch intensity requirement, select corresponding support form；
In construction, strength and stability should be carried out according to the cutting depth of foundation ditch and be designed, can typically use rigidity
Larger diaphram wall should reserve certain gap deeply, between shallow-layer Bu Liang branches protection structure as support form, wherein foundation ditch
With the smooth pile of sharp supporting construction.
The soil in the gap between the adjacent supporting construction of each two is reinforced using high-pressure rotary-spray technique again；
To realize effective transmission of Water And Earth Pressures between depth, ramus superficialis shield, the gap should be after deep support reaches design strength
Consolidation process is carried out using techniques such as high-pressure rotary-sprays.
Then, as shown in figure 3, being excavated to the junction of two adjacent supporting construction, and in the corresponding supporting knot
Structure sets the support 11,12,13.
Dig after cheating bottom to shallow foundation pit, carry out the construction of deep, shallow-layer supporting construction rigid connection beam and purlin, can be real by this beam
Effective connection and power transmission between now deep, shallow-layer supporting construction.
Finally, as shown in figure 4, being excavated to the hole bottom of the foundation ditch downwards, and in the supporting construction supporting of bottom
The support 21 is set in structure.
In certain embodiments, when the foundation ditch needs 3 layers of supporting construction described above, repeat step C to D, until
It is provided with the layer second from the bottom supporting construction.
Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Creative work can is needed to make many modifications and variations according to the design of the present invention.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (5)
1. along depth direction is multi-form, variable cross-section supporting construction；It is characterised in that it includes from ground (9) downwards it is continuous set and
If end to end dried layer supporting construction；
The supporting construction in the every two layers adjacent supporting construction close to hole bottom (29) is arranged at another branch
Inside protection structure, gap between the initial and tail sections being connected between every two layers of supporting construction be present, and nationality is by gap reinforcing body
(3) reinforced；
At least a support (11,12,13,21) laterally set is provided with inside each supporting construction.
It is 2. according to claim 1 along depth direction is multi-form, variable cross-section supporting construction, it is characterised in that the supporting
Structure includes the shallow-layer supporting construction (1) close to above ground portion, and the deep support structure (2) close to hole bottom (29)；It is described
Shallow-layer supporting construction (1) uses the stake of SMW engineering methods or small-sized cast-in-situ bored pile；The deep support structure (2) is continuous using underground
Wall.
It is 3. according to claim 2 along depth direction is multi-form, variable cross-section supporting construction, it is characterised in that the gap
Reinforcing body (3) is reinforced using high-pressure rotary-spray technique.
4. along depth direction is multi-form, the construction method of variable cross-section supporting construction, step is as follows：
A, required to set the shallow-layer supporting construction (1) according to foundation ditch；
B, down-set some supporting construction are required according to foundation ditch, each supporting construction according to corresponding depth and
Foundation ditch intensity requirement, select corresponding support form and section；
C, the soil in the gap between the adjacent supporting construction of each two is reinforced using high-pressure rotary-spray technique；
D, the junction of the two adjacent supporting construction is excavated to, and the branch is set in the corresponding supporting construction
Support；
E, the hole bottom of the foundation ditch is excavated to downwards, and the branch is set in the supporting construction supporting construction of bottom
Support.
5. according to claim 4 along depth direction is multi-form, the construction method of variable cross-section supporting construction, its feature exists
In, when the foundation ditch needs 3 layers of supporting construction described above, repeat step C to D, until being provided with layer institute second from the bottom
State supporting construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710992319.0A CN107761742A (en) | 2017-10-23 | 2017-10-23 | Along depth direction is multi-form, variable cross-section supporting construction and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710992319.0A CN107761742A (en) | 2017-10-23 | 2017-10-23 | Along depth direction is multi-form, variable cross-section supporting construction and its construction method |
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| Publication Number | Publication Date |
|---|---|
| CN107761742A true CN107761742A (en) | 2018-03-06 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710992319.0A Pending CN107761742A (en) | 2017-10-23 | 2017-10-23 | Along depth direction is multi-form, variable cross-section supporting construction and its construction method |
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| Country | Link |
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| CN (1) | CN107761742A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113936442A (en) * | 2021-11-18 | 2022-01-14 | 中国电建集团成都勘测设计研究院有限公司 | Progress monitoring and early warning system for slope engineering |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07305337A (en) * | 1994-05-13 | 1995-11-21 | Haseko Corp | Method for reinforcing self-supported earth retaining wall, and earth retaining wall |
| CN104088296A (en) * | 2014-06-24 | 2014-10-08 | 上海市城市建设设计研究总院 | Soft soil area basement layer adding construction method |
| CN104099933A (en) * | 2014-04-01 | 2014-10-15 | 浙江省建筑设计研究院 | Supporting system reinforcement structure after foundation pit deepening |
| CN106480889A (en) * | 2016-11-14 | 2017-03-08 | 上海岩土工程勘察设计研究院有限公司 | A kind of Pile of Deep Foundation Pit method of reinforcement design |
| CN207512750U (en) * | 2017-10-23 | 2018-06-19 | 上海市城市建设设计研究总院（集团）有限公司 | Along depth direction is multi-form, variable cross-section supporting construction |
-
2017
- 2017-10-23 CN CN201710992319.0A patent/CN107761742A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07305337A (en) * | 1994-05-13 | 1995-11-21 | Haseko Corp | Method for reinforcing self-supported earth retaining wall, and earth retaining wall |
| CN104099933A (en) * | 2014-04-01 | 2014-10-15 | 浙江省建筑设计研究院 | Supporting system reinforcement structure after foundation pit deepening |
| CN104088296A (en) * | 2014-06-24 | 2014-10-08 | 上海市城市建设设计研究总院 | Soft soil area basement layer adding construction method |
| CN106480889A (en) * | 2016-11-14 | 2017-03-08 | 上海岩土工程勘察设计研究院有限公司 | A kind of Pile of Deep Foundation Pit method of reinforcement design |
| CN207512750U (en) * | 2017-10-23 | 2018-06-19 | 上海市城市建设设计研究总院（集团）有限公司 | Along depth direction is multi-form, variable cross-section supporting construction |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113936442A (en) * | 2021-11-18 | 2022-01-14 | 中国电建集团成都勘测设计研究院有限公司 | Progress monitoring and early warning system for slope engineering |
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Application publication date: 20180306 |
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