CN107700496B - The inverse suitable combining construction method of deep basal pit - Google Patents
The inverse suitable combining construction method of deep basal pit Download PDFInfo
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- CN107700496B CN107700496B CN201710914640.7A CN201710914640A CN107700496B CN 107700496 B CN107700496 B CN 107700496B CN 201710914640 A CN201710914640 A CN 201710914640A CN 107700496 B CN107700496 B CN 107700496B
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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
-
- 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
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
- E02D29/05—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
- E02D29/055—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench further excavation of the cross-section proceeding underneath an already installed part of the structure, e.g. the roof of a tunnel
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Foundations (AREA)
Abstract
The present invention relates to a kind of the inverse along combining construction method of deep basal pit, comprising steps of S1: the building enclosure for deep basal pit of constructing；S2: using reverse construction deep basal pit, construction to the outside of building enclosure without pipeline at, layer-by-layer downward earth excavation, it is every to excavate one layer, it constructs the horizontal structure of this layer in the bottom of this layer, is stayed on the horizontal structure of this layer and set soil outlet, and the horizontal structure of this layer and building enclosure is affixed；S3: from the outside of building enclosure without, using along practice construction deep basal pit, constructing to the designed elevation of deep basal pit bottom from pipeline, layer-by-layer downward earth excavation is every to excavate one layer, and anchor pole is arranged in the inside of building enclosure；S4: in the bottom of deep basal pit construction bottom plate；And S5: from bottom plate be upwardly into the outside of building enclosure without pipeline from, the horizontal structure for each layer of successively constructing, meanwhile, the successively building structure on construction ground upwards on the first layer horizontal structure in deep basal pit.The present invention solves the problems, such as can not to implement anchor pole and high-efficient.
Description
Technical field
The present invention relates to the realm of building construction, the inverse suitable combining construction method of espespecially a kind of deep basal pit.
Background technique
In the realm of building construction, the Super High deep basal pit and peripheral path of busiest section are close to the construction site of deep basal pit
Narrow, the depth of deep basal pit is big, and can not be constructed deep basal pit by the way of slope excavation.
Deep basal pit mostly uses vertical building enclosure of the ground-connecting-wall as earth-retaining sealing, and supporting construction has " ground-connecting-wall+interior branch
Support ", inverse work, " ground-connecting-wall+anchor pole " etc..
When however in the prior art, using inner support, needing after deep foundation pit construction will be as the interior branch of temporary structure
Support is removed, and construction material is wasted, and construction efficiency is low.Adverse construction method it is at high cost, it is long in time limit.In underground shallow layer range gut line
Intensively, anchor pole can not be implemented.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of inverse suitable combining construction method of deep basal pit is provided,
Solve the problems of the prior art.
Realizing the technical solution of above-mentioned purpose is:
The present invention provides a kind of inverse suitable combining construction method of deep basal pit, includes the following steps:
S1: the building enclosure for deep basal pit of constructing；
S2: using deep basal pit described in reverse construction, construction to the outside of the building enclosure without pipeline at, successively downwards
Earth excavation, it is every to excavate one layer, it constructs the horizontal structure of this layer in the bottom of this layer, is stayed on the horizontal structure of this layer and set out soil
Mouthful, and the horizontal structure of this layer and the building enclosure is affixed；
S3: it from the outside of the building enclosure without being used from pipeline along the practice construction deep basal pit, constructs to the depth
The designed elevation of bottom of foundation ditch, layer-by-layer downward earth excavation is every to excavate one layer, and anchor pole is arranged in the inside of the building enclosure；
S4: in the bottom of deep basal pit construction bottom plate；And
S5: from the bottom plate be upwardly into the outside of the building enclosure without pipeline from, the horizontal structure for each layer of successively constructing,
Meanwhile the building structure on the first layer horizontal structure in the deep basal pit on upward successively construction ground.
Deep basal pit of the present invention it is inverse along combining construction method the utility model has the advantages that
For the present invention by using reverse construction, layer-by-layer downward earth excavation is every to excavate one layer, constructs in the bottom of this layer
The horizontal structure of this layer, and the horizontal structure of this layer and the building enclosure is affixed, to be supported to deep basal pit, it is not required to
It removes, the waste of temporary support can be reduced.
When earth excavation one layer without pipeline to the outside of the building enclosure, in the external corresponding of the building enclosure
The anchor pole of this layer is set at this layer, per one layer of anchor pole that this layer is arranged is excavated downwards, to be carried out using anchor pole to deep basal pit
Support, construction efficiency are high.
It constructs using along the practice, the horizontal structure for each layer of successively constructing upwards from the bottom plate, meanwhile, in the deep basal pit
Each layer of horizontal structure, underground synchronize upward construction on the ground, reduce the duration on upper upward successively construction ground.In this way using inverse suitable
In conjunction with construct building enclosure, the horizontal structure of each layer and anchor pole of mode deep basal pit is supported, construction efficiency is high, solves
The problem of construction site of busiest section deep basal pit is narrow, underground shallow layer range gut line can not intensively implement anchor pole, does not need
Temporary support is removed, construction efficiency is high, reduces the duration.
Deep basal pit of the present invention it is inverse along combining construction method further improvement lies in that, the building enclosure of deep basal pit of constructing it
Afterwards, further includes:
Construction isolation pile, the isolation pile is supported in the building enclosure at the design position of the deep basal pit,
And the inside of the deep basal pit is carried out by subregion by the isolation pile.
Deep basal pit of the present invention it is inverse along combining construction method further improvement lies in that, further includes:
Per one layer of earthwork is excavated downwards, the isolation pile in this layer is removed.
Deep basal pit of the present invention it is inverse along combining construction method further improvement lies in that, further includes:
Before the building enclosure of constructing, the absolute altitude of first earth excavation to underground first layer.
Deep basal pit of the present invention it is inverse along combining construction method further improvement lies in that, the building enclosure packet for deep basal pit of constructing
It includes:
In the periphery of deep basal pit construction diaphram wall；
The interval construction pile foundation in deep basal pit；
Construction stiffened column, the stiffened column is inserted in the corresponding pile foundation.
Deep basal pit of the present invention it is inverse along combining construction method further improvement lies in that, further includes:
Construct every layer of horizontal structure when, by the horizontal structure of this layer and the corresponding stiffened column anchor connection.
Deep basal pit of the present invention it is inverse along combining construction method further improvement lies in that, set in the inside of the building enclosure
Setting anchor pole includes:
Bury the anchor pole of this layer obliquely outward in the inside of the diaphram wall.
Deep basal pit of the present invention it is inverse along combining construction method further improvement lies in that, further includes:
It, will be using depth base described in reverse construction in the designed elevation of the deep foundation pit construction to the deep basal pit bottom
The soil outlet of each layer horizontal structure when hole is closed.
Detailed description of the invention
Fig. 1 to Fig. 8 is the inverse step schematic diagram along combining construction method of deep basal pit of the present invention.
Fig. 9 is the top view of the inverse supporting construction along combining construction method of deep basal pit of the present invention.
The flow chart for the step of Figure 10 is the inverse suitable combining construction method of deep basal pit of the present invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
Refering to fig. 1 to Fig. 8, it is shown that the inverse step schematic diagram along combining construction method of deep basal pit of the present invention.Refering to figure
10 for deep basal pit of the present invention inverse suitable combining construction method the step of flow chart.In conjunction with shown in Fig. 1 to Fig. 8 and Figure 10, this hair
The inverse suitable combining construction method of bright deep basal pit, includes the following steps:
S1: the building enclosure 10 for deep basal pit of constructing；
S2: using reverse construction deep basal pit, construction to the outside of building enclosure 10 without pipeline at, layer-by-layer downward spoil
Side, it is every to excavate one layer, it constructs the horizontal structure of this layer in the bottom of this layer, is stayed on the horizontal structure of this layer and set soil outlet, and
The horizontal structure of this layer and building enclosure 10 is affixed；
S3: it from the outside of building enclosure 10 without being used from pipeline along practice construction deep basal pit, constructs to deep basal pit bottom
Designed elevation, layer-by-layer downward earth excavation is every to excavate one layer, and anchor pole is arranged in the inside of building enclosure 10；
S4: in the bottom of deep basal pit construction bottom plate；And
S5: from bottom plate be upwardly into the outside of building enclosure 10 without pipeline from, the horizontal structure for each layer of successively constructing, meanwhile,
Building structure on first layer horizontal structure in deep basal pit on upward successively construction ground.
Construct in the way of in this way by inverse along combining building enclosure, the horizontal structure of each layer and anchor pole props up deep basal pit
Support, construction efficiency are high, the construction site for solving busiest section deep basal pit is narrow, underground shallow layer range gut line intensively can not be real
The problem of applying anchor pole does not need to remove temporary support, and construction efficiency is high, reduces the duration.
As an inverse better embodiment along combining construction method for deep basal pit of the present invention, refering to Fig. 9, it is shown that this hair
The top view of the inverse supporting construction along combining construction method of bright deep basal pit.As shown in figure 9, the building enclosure 10 of construction deep basal pit
Later, further includes: isolation pile 14 is supported in building enclosure 10 by isolation pile 14 of constructing at the design position of deep basal pit, and
The inside of deep basal pit is subjected to subregion by isolation pile 14.That is, big foundation pit is carried out subregion, the rule of foundation pit are reduced
Mould can facilitate the construction of support so that the space of each subregion is smaller, reduce tau-effect.In the present embodiment, by deep basal pit
It is divided into three king-tower, annex and auxiliary tower subregions to carry out subsequent construction.In subsequent work progress, per one layer of soil of excavation downwards
Side, removes the isolation pile 14 in this layer, to facilitate the construction for carrying out each layer horizontal structure.
As an inverse better embodiment along combining construction method for deep basal pit of the present invention, as shown in Figure 1, being enclosed in construction
Before protection structure 10, the absolute altitude of first earth excavation to underground first layer B1, thus during constructing building enclosure 10, so that it may
To carry out the construction such as hole drill downwards directly at the first layer B1 of underground, to reduce the length of corresponding hole drill, improves and apply
Work efficiency rate reduces construction time and expense, reduces energy loss.
As an inverse better embodiment along combining construction method for deep basal pit of the present invention, as shown in Figure 1, deep base of constructing
The building enclosure in hole further include: in the periphery of deep basal pit construction diaphram wall 11, set shape to enclose using diaphram wall 11
At the construction area of deep basal pit, during deep pit digging, diaphram wall 11 can bear very big soil pressure, to deep base
It plays a supporting role in hole.
The interval construction pile foundation 12 in deep basal pit；Construction supplies the stiffened column 13 of the horizontal structure of affixed each layer, by stiffened column
13 are inserted in corresponding pile foundation 12.In the present embodiment, first in the bottom of deep basal pit construction pile foundation 12, then by stiffened column 13
It is inserted to downwards in pile foundation 12 from the top of pile foundation 12, mutually coincide 3m or so.Stiffened column 13 is for the horizontal junction with later period each layer
Structure is anchored, to play the role of supporting deep basal pit.
As an inverse better embodiment along combining construction method for deep basal pit of the present invention, as shown in Fig. 2, every layer of construction
Horizontal structure when, by 13 anchor connection of the horizontal structure of this layer and corresponding stiffened column.In this way, by transverse structure and longitudinal knot
Structure carries out drawknot connection and forms stable support to foundation pit to form stable support construction, guarantees the safety of construction.
As an inverse better embodiment along combining construction method for deep basal pit of the present invention, as shown in Fig. 2, going along with sb. to guard him knot
Structure 10 setting anchor poles include: the anchor pole for burying this layer obliquely outward in the inside of diaphram wall 11, to utilize anchor pole
Diaphram wall 11 is supported.
As an inverse better embodiment along combining construction method for deep basal pit of the present invention, as shown in Figure 2, further includes:
In the designed elevation of deep foundation pit construction to deep basal pit bottom, each layer horizontal structure when by using reverse construction deep basal pit
Soil outlet is closed.
Below with reference to shown in Fig. 1 to Fig. 8, the construction procedure of the present embodiment is illustrated:
As shown in Figure 1, in the periphery of deep basal pit construction diaphram wall 11, to enclose to set using diaphram wall 11 to be formed
The construction area of deep basal pit.The interval construction pile foundation 12 in deep basal pit；Construction supplies the stiffened column 13 of the horizontal structure of affixed each layer,
Stiffened column 13 is inserted in corresponding pile foundation 12.In the present embodiment, first then will in the bottom of deep basal pit construction pile foundation 12
Stiffened column 13 is inserted to downwards in pile foundation 12 from the top of pile foundation 12, and mutually coincide 3m or so.Stiffened column 13 is used for and later period each layer
Horizontal structure anchored, thus play the role of support deep basal pit.
As shown in Fig. 2, absolute altitude B1 of the first earth excavation to underground first layer, and first layer horizontal structure 21 under construction ground.
In underground, first layer horizontal structure 21 opens up the first soil outlet of underground.
As shown in figure 3, using reverse construction deep basal pit, after the construction of underground first layer horizontal structure 21 is completed, to
At lower earth excavation to the absolute altitude of subbasement B2, in the bottom of subbasement B2 construction subbasement horizontal structure
22, the second soil outlet of underground is opened up in subbasement horizontal structure 22.By subbasement horizontal structure 22 and stiffened column 13
Anchor connection is carried out, stable support system is formed, to reinforce the supporting role to deep basal pit, deep basal pit is supported, no
It needs to remove, the waste of temporary support can be reduced.The isolation pile 14 within the scope of this is removed in the process.
As shown in figure 4, in the present embodiment, after subbasement horizontal structure 22 is completed in construction, continuing to excavate one downwards
Layer, at the absolute altitude for reaching underground third layer B3, the shallow-layer for avoiding deep basal pit has the place of pipeline, and building enclosure 10 is outer at this time
Portion corresponds to no too many pipeline at underground third layer B3, and anchor pole can be set, both economical in this way.
Specifically, by the position 1000mm on earth excavation to underground third layer B3, in the external setting of diaphram wall 11
First of anchor pole 31, and slip casting continue to excavate after the intensity of anchor pole 31 reaches requirement under.
And so on, using reverse construction deep basal pit, construction to the outside of building enclosure without pipeline at, successively open downwards
Earth excavation, it is every to excavate one layer, it constructs the horizontal structure of this layer in the bottom of this layer, is stayed on the horizontal structure of this layer and set out soil
Mouthful, and the horizontal structure of this layer and building enclosure is affixed.From the outside of building enclosure without deep using constructing along the practice from pipeline
Foundation pit is constructed to the designed elevation of deep basal pit bottom, and layer-by-layer downward earth excavation is every to excavate one layer, in the inside of building enclosure
Anchor pole is set；That is, the anchor pole of this layer is set per excavating one layer downwards, so that deep basal pit is supported using anchor pole,
Construction efficiency is high.
Specifically, as shown in figure 5, in the present embodiment, the 4th layer of underground B4 is excavated downwards, in the outer of diaphram wall 11
Portion's setting construction corresponds to the second anchor pole 32 of the 4th layer of B4 in underground；
Underground layer 5 B5 is excavated downwards, is constructed in the external setting of diaphram wall 11 corresponding to underground layer 5 B5's
Third road anchor pole 33；
Underground layer 6 B6 is excavated downwards, is constructed in the external setting of diaphram wall 11 corresponding to underground layer 6 B6's
4th anchor pole 34；
Underground layer 7 B7 is excavated downwards, is constructed in the external setting of diaphram wall 11 corresponding to underground layer 7 B7's
5th anchor pole 35；
It is excavated at the designed elevation of bottom of foundation ditch downwards, bottom B8, in the external setting construction pair of diaphram wall 11
It should be in the 6th anchor pole 36 of bottom B8.
As shown in fig. 6, bottom plate 40 of constructing on bottom B8 is used as underground layer 7 horizontal structure, due to the base of king-tower position
Hole usually wants dented, so in the present embodiment, the place on bottom plate 40 corresponding to king-tower position is dented downwards, reinforces stablizing
Property.
As shown in fig. 7, using template construction underground layer 6 horizontal structure on bottom plate 40 after bottom plate 40 is constructed
26, while the first layer horizontal structure 51 on construction ground on underground first layer horizontal structure 21.Underground synchronizes upward construction on the ground,
Reduce the duration.
As shown in figure 8, the layer 5 horizontal structure 25 under construction ground at the layer 5 B5 of underground, while first layer water on the ground
Second layer horizontal structure 52 on construction ground on flat structure 51.Underground synchronizes upward construction on the ground, reduces the duration.
Upward in turn lower 4th layer of B4 and underground third layer B3, while third layer horizontal structure 53 and ground on construction ground
4th layer of horizontal structure 54.Underground synchronizes upward construction on the ground, reduces the duration.
Inverse the having the beneficial effect that along combining construction method of deep basal pit of the present invention
Deep basal pit is carried out subregion by isolation pile by foundation pit by the present invention, reduces tau-effect.Construction building enclosure it
Before, the absolute altitude of first earth excavation to underground first layer just reduces the hole drill length of the building enclosure under construction ground at first layer
Time and expense.
By using reverse construction, layer-by-layer downward earth excavation is every to excavate one layer, constructs this layer in the bottom of this layer
Horizontal structure, and the horizontal structure of this layer and building enclosure is affixed, to be supported deep basal pit, it is not required to remove, it can
Reduce the waste of temporary support.
When one layer without pipeline of the outside of earth excavation to building enclosure, correspond at the layer in the outside of building enclosure
The anchor pole of this layer is set, the anchor pole of this layer is set per excavating one layer downwards, to be supported using anchor pole to deep basal pit, is constructed
It is high-efficient.
Using along the practice construct, the horizontal structure for each layer of successively constructing upwards from bottom plate, meanwhile, on deep basal pit upwards according to
Each layer of horizontal structure on secondary construction ground, underground synchronize upward construction on the ground, reduce the duration.In this way using inverse along the side combined
Formula construction ground-connecting-wall, the horizontal structure of each layer and anchor pole are supported deep basal pit, and construction efficiency is high, solves busiest section depth
The problem of construction site of foundation pit is narrow, underground shallow layer range gut line can not intensively implement anchor pole, does not need to remove interim branch
Support, construction efficiency is high, reduces the duration.
The present invention has been described in detail with reference to the accompanying drawings, those skilled in the art can be according to upper
It states and bright many variations example is made to the present invention.Thus, certain details in embodiment should not constitute limitation of the invention, this
Invention will be using the range that the appended claims define as protection scope of the present invention.
Claims (2)
1. a kind of deep basal pit is inverse along combining construction method, which comprises the steps of:
S1: the building enclosure for deep basal pit of constructing；
S2: using deep basal pit described in reverse construction, construction to the outside of the building enclosure without pipeline at, successively excavate downwards
Cubic metre of earth, it is every to excavate one layer, it constructs the horizontal structure of this layer in the bottom of this layer, is stayed on the horizontal structure of this layer and set soil outlet,
And it is the horizontal structure of this layer and the building enclosure is affixed；
S3: it from the outside of the building enclosure without being constructed from pipeline to the designed elevation of the deep basal pit bottom, successively opens downwards
Earth excavation, it is every to excavate one layer, in the inside of the building enclosure, anchor pole is set；
S4: in the bottom of deep basal pit construction bottom plate；And
S5: from the bottom plate be upwardly into the outside of the building enclosure without pipeline from, the horizontal structure for each layer of successively constructing, together
When, the building structure on the first layer horizontal structure in the deep basal pit on upward successively construction ground；
After the building enclosure of deep basal pit of constructing, further includes:
Construction isolation pile, the isolation pile is supported in the building enclosure, and is led at the design position of the deep basal pit
It crosses the isolation pile and the inside of the deep basal pit is subjected to subregion, so that the space of each subregion is smaller；
Per one layer of earthwork is excavated downwards, the isolation pile in this layer is removed；
Before the building enclosure of constructing, the absolute altitude of first earth excavation to underground first layer, so as in the underground first
Hole drill is carried out at layer downwards, reduces the length of the hole drill；
Construction deep basal pit building enclosure include:
In the periphery of deep basal pit construction diaphram wall；
The interval construction pile foundation in deep basal pit；
Construction stiffened column, the stiffened column is inserted in the corresponding pile foundation；
Construct every layer of horizontal structure when, by the horizontal structure of this layer and the corresponding stiffened column anchor connection；
In the inside of the building enclosure, setting anchor pole includes:
The anchor pole of this layer, and slip casting are buried obliquely outward in the inside of the diaphram wall, when the intensity of the anchor pole reaches
Continue to excavate under after to requirement.
2. deep basal pit as claimed in claim 1 is inverse along combining construction method, which is characterized in that further include:
In the designed elevation of the deep foundation pit construction to the deep basal pit bottom, when will use deep basal pit described in reverse construction
The soil outlet of each layer horizontal structure closed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108930275A (en) * | 2018-07-25 | 2018-12-04 | 中国铁路设计集团有限公司 | It is a kind of to face forever in conjunction with the ultra-deep shaft rapid constructing method along inverse combination |
| CN111305232B (en) * | 2020-03-31 | 2022-01-04 | 南京地下空间高技术产业研究院有限公司 | A foundation ditch protection strutting arrangement for construction of old city district |
| CN112982484B (en) * | 2021-03-04 | 2022-07-12 | 中国建筑第八工程局有限公司 | Semi-synchronous sequential construction method for underground and overground structure |
| CN113090065B (en) * | 2021-04-15 | 2021-11-30 | 中国建筑第二工程局有限公司 | Forward and reverse combined construction method for multi-layer building reinforcement and reconstruction project of urban core area |
| CN114482605B (en) * | 2022-02-14 | 2023-05-16 | 锦宸集团有限公司 | Construction method for implementing transformation of hospital building electromechanical system based on BIM |
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