CN107700496A - The inverse suitable combining construction method of deep basal pit - Google Patents

The inverse suitable combining construction method of deep basal pit Download PDF

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Publication number
CN107700496A
CN107700496A CN201710914640.7A CN201710914640A CN107700496A CN 107700496 A CN107700496 A CN 107700496A CN 201710914640 A CN201710914640 A CN 201710914640A CN 107700496 A CN107700496 A CN 107700496A
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China
Prior art keywords
construction
layer
basal pit
deep basal
horizontal
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Granted
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CN201710914640.7A
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CN107700496B (en
Inventor
于海申
杨红岩
亓立刚
刘鹏
苏亚武
王宝德
邵明兴
曾俐
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China Construction Eighth Engineering Division Co Ltd
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China Construction Eighth Engineering Division Co Ltd
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Publication of CN107700496A publication Critical patent/CN107700496A/en
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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/02Foundation pits
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/02Foundation pits
    • E02D17/04Bordering surfacing or stiffening the sides of foundation pits
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/045Underground 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
    • E02D29/05Underground 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
    • E02D29/055Underground 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

Abstract

The present invention relates to a kind of the inverse along combining construction method, including step of deep basal pit:S1:The building enclosure of construction deep basal pit;S2:Using reverse construction deep basal pit, construct to the outside of building enclosure without pipeline at, successively downward earth excavation, often excavate one layer, constructed in the bottom of this layer the horizontal structure of this layer, 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 being used at pipeline along practice construction deep basal pit, construct to the designed elevation of deep basal pit bottom, successively downward earth excavation, often excavates one layer, and anchor pole is set 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 at, the horizontal structure for each layer of constructing successively, meanwhile, upward building structure on construction ground successively on the first layer horizontal structure in deep basal pit.The present invention solves the problems, such as that anchor pole and efficiency high can not be implemented.

Description

The inverse suitable combining construction method of deep basal pit
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 technology
In the realm of building construction, the Super High deep basal pit of busiest section and peripheral path are close to the construction site of deep basal pit Narrow and small, 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 uses vertical building enclosure of the ground-connecting-wall as earth-retaining sealing more, and supporting construction has " ground-connecting-wall+interior branch Support ", inverse work, " ground-connecting-wall+anchor pole " etc..
But in the prior art, during using inner support, needed after deep foundation pit construction using as the interior branch of temporary structure Support is removed, and wastes construction material, and efficiency of construction is low.The cost of adverse construction method is high, long in time limit.In underground shallow layer scope gut line It is intensive, anchor pole can not be implemented.
The content of the invention
The defects of it is an object of the invention to overcome prior art, there is provided a kind of inverse suitable combining construction method of deep basal pit, Solve the problems of the prior art.
Realizing the technical scheme of above-mentioned purpose is:
The present invention provides a kind of the inverse along combining construction method of deep basal pit, comprises the following steps:
S1:The building enclosure of construction deep basal pit;
S2:Using deep basal pit described in reverse construction, construct to the outside of the building enclosure without pipeline at, successively downwards Earth excavation, one layer is often excavated, the horizontal structure of this layer of being constructed in the bottom of this layer, is stayed on the horizontal structure of this layer and sets out soil Mouthful, and the horizontal structure of this layer and the building enclosure is affixed;
S3:From the outside of the building enclosure without being used at pipeline along the practice construction deep basal pit, construct to the depth The designed elevation of bottom of foundation ditch, successively downward earth excavation, often excavates one layer, and anchor pole is set 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 at, the horizontal structure for each layer of constructing successively, Meanwhile upward building structure on construction ground successively on the first layer horizontal structure in the deep basal pit.
The inverse beneficial effect along combining construction method of deep basal pit of the present invention:
For the present invention by using reverse construction, successively downward earth excavation, often excavates one layer, is constructed 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, so as to be supported to deep basal pit, it is not required to Remove, the waste of temporary support can be reduced.
When one layer without pipeline of earth excavation to the outside of the building enclosure, in the outside corresponding of the building enclosure The anchor pole of this layer is set at this layer, per one layer of anchor pole for setting this layer is excavated downwards, so as to be carried out using anchor pole to deep basal pit Support, efficiency of construction are high.
Constructed using along the practice, the horizontal structure for each layer of being constructed successively upwards from the bottom plate, meanwhile, in the deep basal pit Upper each layer of horizontal structure on construction ground successively upwards, underground synchronous construction upwards on the ground, reduces the duration.So using inverse suitable With reference to construct building enclosure, the horizontal structure of each layer and anchor pole of mode deep basal pit is supported, efficiency of construction is high, solves The construction site of busiest section deep basal pit is narrow and small, underground shallow layer scope gut line intensive the problem of can not implementing anchor pole, it is not necessary to Temporary support is removed, efficiency of construction is high, reduces the duration.
Deep basal pit of the present invention it is inverse along combining construction method further improvement is that, the building enclosure of deep basal pit of constructing it Afterwards, in addition to:
Construction isolation pile, the isolation pile is supported in the building enclosure at the design attitude 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 is that, in addition to:
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 is that, in addition to:
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 is that, the building enclosure bag for deep basal pit of constructing 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.
Deep basal pit of the present invention it is inverse along combining construction method further improvement is that, in addition to:
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 is that, set in the inside of the building enclosure Putting anchor pole includes:
Outwards bury the anchor pole of this layer obliquely in the inside of the diaphram wall.
Deep basal pit of the present invention it is inverse along combining construction method further improvement is that, in addition to:
In the designed elevation of the deep foundation pit construction to the deep basal pit bottom, deep base described in reverse construction will be used The soil outlet of each layer horizontal structure during hole is closed.
Brief description of the drawings
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.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
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 it is inverse along combining construction method the step of flow chart.With reference to shown in Fig. 1 to Fig. 8 and Figure 10, this hair The inverse suitable combining construction method of bright deep basal pit, comprises the following steps:
S1:The building enclosure 10 of construction deep basal pit;
S2:Using reverse construction deep basal pit, construct to the outside of building enclosure 10 without pipeline at, successively downward spoil Side, one layer is often excavated, the horizontal structure of this layer of being constructed in the bottom of this layer, is stayed on the horizontal structure of this layer and sets soil outlet, and The horizontal structure of this layer and building enclosure 10 is affixed;
S3:From the outside of building enclosure 10 without being used at pipeline along practice construction deep basal pit, construct to deep basal pit bottom Designed elevation, successively downward earth excavation, often excavates one layer, and anchor pole is set 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 at, the horizontal structure for each layer of constructing successively, meanwhile, Upward building structure on construction ground successively on first layer horizontal structure in deep basal pit.
So deep basal pit is propped up along construct building enclosure, the horizontal structure of each layer and anchor pole of the mode combined using inverse Support, efficiency of construction are high, and the construction site for solving busiest section deep basal pit is narrow and small, underground shallow layer scope gut line is intensive can not be real The problem of applying anchor pole, it is not necessary to remove temporary support, efficiency of construction 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 Afterwards, in addition to:Construction isolation pile 14, isolation pile 14 is supported in building enclosure 10 at the design attitude of deep basal pit, and The inside of deep basal pit is carried out by subregion by isolation pile 14.That is, big foundation ditch is carried out into subregion, the rule of foundation ditch are reduced Mould so that the space of each subregion is smaller, the construction that can conveniently support, reduces tau-effect.In the present embodiment, by deep basal pit It is divided into king-tower, annex and auxiliary tower three subregions carry out subsequent construction.In follow-up 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, so as to during building enclosure 10 of constructing, so that it may To carry out the construction such as hole drill downwards directly at the first layer B1 of underground, so as to reduce the length of corresponding hole drill, improve and apply Work efficiency rate, reduce engineering time and expense, reduce 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 also includes:In the periphery of deep basal pit construction diaphram wall 11, shape is set so as to be enclosed using diaphram wall 11 Into the construction area of deep basal pit, during deep pit digging, diaphram wall 11 can bear very big soil pressure, to deep base Play 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 pile foundation 12 of being constructed in the bottom of deep basal pit, then by stiffened column 13 It is inserted to from the top down of pile foundation 12 in pile foundation 12, mutually coincide 3m or so.Stiffened column 13 is used for the horizontal junction with later stage each layer Structure is anchored, so as to play a part 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 the horizontal structure of this layer and the anchor connection of corresponding stiffened column 13.So, transversary and longitudinal direction are tied Structure carries out drawknot connection, and so as to form stable supporting construction, stable support is formed to foundation ditch, ensures the security 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 sets anchor pole to include:The anchor pole of this layer is outwards buried obliquely in the inside of diaphram wall 11, so as 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 Fig. 2 also including: In the designed elevation of deep foundation pit construction to deep basal pit bottom, by using each layer horizontal structure during reverse construction deep basal pit Soil outlet is closed.
With reference to shown in Fig. 1 to Fig. 8, the construction procedure of the present embodiment is illustrated:
As shown in figure 1, diaphram wall 11 of being constructed on the periphery of deep basal pit, so as 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 in pile foundation 12 from the top down of pile foundation 12, and mutually coincide 3m or so.Stiffened column 13 is used for and later stage each layer Horizontal structure anchored, so as to play a part 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 soil outlet of underground first.
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 subbasement B2 absolute altitude, subbasement horizontal structure of being constructed in subbasement B2 bottom 22, open up the soil outlet of underground second in subbasement horizontal structure 22.By subbasement horizontal structure 22 and stiffened column 13 Anchor connection is carried out, forms stable support system, to strengthen the supporting role to deep basal pit, deep basal pit is supported, no Need to remove, the waste of temporary support can be reduced.The isolation pile 14 in the range 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, continue to excavate one downwards Layer, at the absolute altitude for reaching underground third layer B3, avoiding the shallow-layer of deep basal pit has the place of pipeline, and now building enclosure 10 is outer Portion corresponds to no too many pipeline at the third layer B3 of underground, can set anchor pole, so both economical.
Specifically, by earth excavation to 1000mm positions on the third layer B3 of underground, outside in diaphram wall 11 is set First of anchor pole 31, and slip casting, when the intensity of anchor pole 31 reach requirement it is backward under continue to excavate.
By that analogy, using reverse construction deep basal pit, construct to the outside of building enclosure without pipeline at, successively open downwards Earth excavation, one layer is often excavated, the horizontal structure of this layer of being constructed in the bottom of this layer, is stayed on the horizontal structure of this layer and sets out soil Mouthful, and the horizontal structure of this layer and building enclosure is affixed.It is deep along practice construction without being used at pipeline from the outside of building enclosure Foundation ditch, construct to the designed elevation of deep basal pit bottom, successively downward earth excavation, often excavates one layer, in the inside of building enclosure Anchor pole is set;That is, per one layer of anchor pole for setting this layer is excavated downwards, so as to be supported using anchor pole to deep basal pit, Efficiency of construction 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 sets second anchor pole 32 of the construction corresponding to the 4th layer of B4 in underground;
Underground layer 5 B5 is excavated downwards, and outside in diaphram wall 11 sets construction corresponding to underground layer 5 B5's 3rd anchor pole 33;
Underground layer 6 B6 is excavated downwards, and outside in diaphram wall 11 sets construction corresponding to underground layer 6 B6's 4th anchor pole 34;
Underground layer 7 B7 is excavated downwards, and outside in diaphram wall 11 sets construction 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, outside in diaphram wall 11 sets construction pair Should be in bottom B8 the 6th anchor pole 36.
As shown in fig. 6, bottom plate 40 of being constructed on bottom B8 is used as underground layer 7 horizontal structure, due to the base of king-tower position Hole is generally dented, so in the present embodiment, the place on bottom plate 40 corresponding to king-tower position is dented downwards, strengthens stable Property.
As shown in fig. 7, after bottom plate 40 is constructed, template construction underground layer 6 horizontal structure is used on bottom plate 40 26, while the first layer horizontal structure 51 on construction ground on underground first layer horizontal structure 21.Underground synchronous construction upwards 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 synchronous construction upwards 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 synchronous construction upwards 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 foundation ditch by the present invention by isolation pile, reduces tau-effect.Construction building enclosure it Before, the absolute altitude of first earth excavation to underground first layer, just reduce the hole drill length of the building enclosure under construction ground at first layer Time and expense.
By using reverse construction, successively downward earth excavation, often excavates one layer, this layer of being constructed in the bottom of this layer Horizontal structure, and the horizontal structure of this layer and building enclosure is affixed, so as to be supported deep basal pit, it is not required to remove, can Reduce the waste of temporary support.
When one layer without pipeline of the outside of earth excavation to building enclosure, correspond in the outside of building enclosure at the layer The anchor pole of this layer is set, per one layer of anchor pole for setting this layer is excavated downwards, so as to be supported using anchor pole to deep basal pit, constructed Efficiency high.
Using along the practice construct, the horizontal structure for each layer of being constructed successively upwards from bottom plate, meanwhile, on deep basal pit upwards according to Each layer of horizontal structure on secondary construction ground, underground synchronous construction upwards on the ground, reduces the duration.So using inverse along the side combined Formula construction ground-connecting-wall, the horizontal structure of each layer and anchor pole are supported to deep basal pit, and efficiency of construction is high, solves busiest section depth The construction site of foundation ditch is narrow and small, underground shallow layer scope gut line intensive the problem of can not implementing anchor pole, it is not necessary to removes interim branch Support, efficiency of construction is high, reduces the duration.
The present invention is described in detail above in association with accompanying drawing embodiment, those skilled in the art can be according to upper State and bright many variations example is made to the present invention.Thus, some details in embodiment should not form limitation of the invention, this Invention will be used as protection scope of the present invention using the scope that appended claims define.

Claims (8)

1. a kind of deep basal pit is inverse along combining construction method, it is characterised in that comprises the following steps:
S1:The building enclosure of construction deep basal pit;
S2:Using deep basal pit described in reverse construction, construct to the outside of the building enclosure without pipeline at, successively excavate downwards Cubic metre of earth, one layer is often excavated, the horizontal structure of this layer of being constructed in the bottom of this layer, is stayed on the horizontal structure of this layer and sets soil outlet, It is and the horizontal structure of this layer and the building enclosure is affixed;
S3:From the outside of the building enclosure without being used at pipeline along the practice construction deep basal pit, construct to the deep basal pit The designed elevation of bottom, successively downward earth excavation, often excavates one layer, and anchor pole is set 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 at, the horizontal structure for each layer of constructing successively, together When, the building structure on construction ground successively upwards on the first layer horizontal structure in the deep basal pit.
2. deep basal pit as claimed in claim 1 is inverse along combining construction method, it is characterised in that deep basal pit of constructing goes along with sb. to guard him knot After structure, in addition to:
Construction isolation pile, the isolation pile is supported in the building enclosure, and is led at the design attitude of the deep basal pit Cross the isolation pile and the inside of the deep basal pit is subjected to subregion.
3. deep basal pit as claimed in claim 2 is inverse along combining construction method, it is characterised in that also includes:
Per one layer of earthwork is excavated downwards, the isolation pile in this layer is removed.
4. deep basal pit as claimed in claim 1 is inverse along combining construction method, it is characterised in that also includes:
Before the building enclosure of constructing, the absolute altitude of first earth excavation to underground first layer.
5. deep basal pit as claimed in claim 2 is inverse along combining construction method, it is characterised in that deep basal pit of constructing goes along with sb. to guard him knot Structure 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.
6. deep basal pit as claimed in claim 5 is inverse along combining construction method, it is characterised in that also includes:
Construct every layer of horizontal structure when, by the horizontal structure of this layer and the corresponding stiffened column anchor connection.
7. deep basal pit as claimed in claim 5 is inverse along combining construction method, it is characterised in that is set in the inside of the building enclosure Putting anchor pole includes:
Outwards bury the anchor pole of this layer obliquely in the inside of the diaphram wall.
8. deep basal pit as claimed in claim 1 is inverse along combining construction method, it is characterised in that also includes:
In the designed elevation of the deep foundation pit construction to the deep basal pit bottom, will use described in reverse construction during deep basal pit The soil outlet of each layer horizontal structure closed.
CN201710914640.7A 2017-09-30 2017-09-30 The inverse suitable combining construction method of deep basal pit Active CN107700496B (en)

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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
CN111305232A (en) * 2020-03-31 2020-06-19 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

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Publication number Priority date Publication date Assignee Title
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
CN111305232A (en) * 2020-03-31 2020-06-19 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

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