CN110387887A - It is oriented to the construction method of partition wall and its construction method and foundation pit enclosure structure - Google Patents
It is oriented to the construction method of partition wall and its construction method and foundation pit enclosure structure Download PDFInfo
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- CN110387887A CN110387887A CN201910579231.5A CN201910579231A CN110387887A CN 110387887 A CN110387887 A CN 110387887A CN 201910579231 A CN201910579231 A CN 201910579231A CN 110387887 A CN110387887 A CN 110387887A
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- underground structure
- partition wall
- bottom plate
- foundation pit
- construction
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- 238000010276 construction Methods 0.000 title claims abstract description 126
- 238000005192 partition Methods 0.000 title claims abstract description 68
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 29
- 239000004567 concrete Substances 0.000 claims abstract description 15
- 210000003205 muscle Anatomy 0.000 claims description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 239000002689 soil Substances 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000000945 filler Substances 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 claims description 7
- 239000000565 sealant Substances 0.000 claims description 7
- 239000004568 cement Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000009415 formwork Methods 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000007586 pull-out test Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000002002 slurry Substances 0.000 description 17
- 230000002787 reinforcement Effects 0.000 description 14
- 239000007788 liquid Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 239000003673 groundwater Substances 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
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- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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- 238000004062 sedimentation Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
Abstract
The present invention provides a kind of guiding partition wall, it is oriented to the construction method of partition wall and the construction method of foundation pit enclosure structure.It is oriented among partition wall structure located underground, including the reinforced concrete wall that two sides is oppositely arranged, the space between reinforced concrete wall described in two sides is for being arranged foundation pit enclosure structure；The reinforced concrete wall extends downwardly into the bottom plate of the underground structure from the top plate of the underground structure, and every one side armored concrete is provided with concrete-bar component within the walls, and the lower end of the concrete-bar component is implanted into the bottom plate of the underground structure.The construction method of foundation pit enclosure structure and its guiding partition wall provided by the present invention for existing underground structure is directed to this specified conditions of existing underground structure, it is big to overcome existing method security risk, long construction period, the disadvantages of less economical, is more in line with the green construction requirement of the low-risk, high efficiency, low cost of modern architecture construction.
Description
Technical field
The present invention relates to the realm of building construction, more particularly to the guiding of the foundation pit enclosure structure for existing underground structure
The construction method of partition wall and its construction method and foundation pit enclosure structure.
Background technique
In the development process of urban construction, relatively broad development and utilization are had been obtained in urban underground space.But with
The development of urbanization process, people the functional requirement of the underground space is also stepped up, some existing underground structures are gradually not
New functional requirement is adapted to, existing underground structure is removed, extends and even excavates the retrofit works such as increasing layer, will be from now on
The inexorable trend of urban underground space development.
Underground structure is carried out to excavate increasing layer construction, then is related to carrying out foundation pit enclosure structure inside existing underground structure
The problem of construction.When level of ground water is higher than the bottom plate of existing underground structure, building enclosure is carried out inside existing underground structure
Construction can face following problem:
Punching on existing bottom plate, which will cause underground water and dash forward, gushes, and leads to that construction work can not be carried out inside existing underground structure
Industry.In addition, underground water and foundation soil pour in basement, surrounding enviroment sedimentation will also result in, to neighboring buildings, pipeline, road etc.
Facility causes disturbing influence.
When high water level area carries out building enclosure construction, the water and soil for using slurry coat method with compensating groove section deep is generally required
Lateral pressure avoids the Tu Bi of building enclosure construction period from collapsing.The liquid level theoretical level of slurry coat method is normally close in underground water
Buried depth, the i.e. liquid level of slurry coat method are higher than existing underground structure bottom plate, it is therefore necessary to increase measure to ensure mud
Liquid level.
When facing above-mentioned engineering problem, following two conventional method is used at present:
Building enclosure is extended out to other than existing basement, to avoid in basement interior construction building enclosure.
Full hall soil body backfill is carried out in existing basement, the depth of fill is higher than level of ground water and as far as possible close to ground.
In all kinds of building dense regions such as inner city, method (1) often protected red line or space enrironment limitation, nothing
Method extends out building enclosure；Being influenced by vertical member inside existing underground structure, method (2) -- full hall backfills difficulty of construction
Greatly, it bankets often leakiness, is unfavorable for heavy construction equipment operation, building enclosure mud also easily occurs when constructing and alters the wall that gushes or collapse
Problem.In addition, whether method (1) or method (2), project amount is all multiplied, there are security risks big, construction period
The disadvantages of long, less economical.
In conclusion excavate in add-story reconstruction work to existing underground structure, it is existing extend out building enclosure or
Full hall soil body backfill has that larger security risk, longer construction period and construction cost are high, more and more not
It is able to satisfy the green construction requirement of the low-risk, high efficiency, low cost of Modern Construction, how to evade security risk, improve and open
Dig the working efficiency and construction quality of the existing underground structure of add-story reconstruction, reduction human cost and labor intensity of workers have become
Those skilled in the art's technical problem in the urgent need to address.
Summary of the invention
Based on this, it is necessary to big, the work effect for security risk in current existing underground structure excavation add-story reconstruction work
The problem that rate is low, construction cost is high provides a kind of construction method for being oriented to partition wall and its construction method and foundation pit enclosure structure.
A kind of guiding partition wall, among structure located underground, including the reinforced concrete wall that two sides is oppositely arranged, described in two sides
Space between reinforced concrete wall is for being arranged foundation pit enclosure structure；The reinforced concrete wall is from the top of the underground structure
Plate extends downwardly into the bottom plate of the underground structure, and every one side armored concrete is provided with concrete-bar component, the steel within the walls
The lower end of muscle component is implanted into the bottom plate of the underground structure.
Above-mentioned guiding partition wall, solve groundwater level region to existing underground structure carry out excavate add-story reconstruction work when
The underground water of appearance is prominent to gush problem, and when progress building enclosure construction, can not ensure enough slurry coat method liquid levels and make
The problems such as Cheng Tubi collapses.Guiding partition wall is built by the two sides of foundation pit enclosure structure proposed in existing underground structure, by base
The operation area of pit enclosure structure and other regions of underground structure are separated, on the one hand, can to avoid abolishing underground tie
Underground water pours in other non-operation areas when the bottom plate of structure；On the other hand, it in construction foundation pit building enclosure, is capable of forming closely
It is lauched the slurry coat method liquid level of buried depth, Tu Bi is avoided to collapse；In addition, the construction of guiding partition wall is not by the limit of space enrironment
System, will not be influenced by vertical member inside underground structure, difficulty of construction it is small, the lower end of vertical muscle is implanted in the bottom of underground structure
It is combined in plate, between reinforced concrete wall that this design is poured after can guaranteeing and the existing underground structure being previously poured strong
Degree improves reinforced concrete wall performance, ensures that existing underground structure excavates the safety of add-story reconstruction whole process, concrete-bar component rises
To the effect for carrying out reinforcement and strengthening to existing underground structure, the vertical bearing capacity of existing underground structure is improved, to meet heavy type
Job requirements of the construction equipment on existing structure top plate, wall will not occur collapsing in building enclosure when constructing or mud is altered to gush and be asked
Topic.
The concrete-bar component includes vertically arranged vertical muscle, the lower end of the vertical muscle in one of the embodiments,
Be implanted in the bottom plate of the underground structure, the side of the vertical muscle be provided with several row horizontal bars, the vertical muscle with
The corresponding horizontal bar is fixedly connected.
The vertical muscle is fixedly connected with the corresponding horizontal bar by wire binding in one of the embodiments, or
Person is fixedly connected by welding manner.
The seam crossing between the reinforced concrete wall and the bottom plate of the underground structure is set in one of the embodiments,
Set waterproof construction.
The waterproof construction includes several spaced sealing grouting pipes in one of the embodiments, described to stop
Water grouting pipe one end is embedded in the armored concrete within the walls downward, and the other end exposes outside the reinforced concrete wall.
The waterproof construction includes at least one waterstop in one of the embodiments, and the waterstop is along described
The extending direction of the seam of reinforced concrete wall and bottom plate joint arranges that the waterstop includes being set to the underground structure
Backplate surface groove and groove filler.
The waterproof construction is that concave-convex card slot blocks water in one of the embodiments, if the bumps card slot block water including
The rectangular channel of the dry backplate surface for being set to the underground structure and several rectangles for being set to the reinforced concrete wall bottom surface
Tooth, the rectangular teeth are inserted into respectively in the corresponding rectangular channel.
The groove filler is water-swellable sealant in one of the embodiments,.
A kind of construction method of above-mentioned guiding partition wall, includes the following steps:
Step 1: the setting-out on the bottom plate of the underground structure, in the two sides of the position of the proposed foundation pit enclosure structure
The position that reinforced concrete wall described in two sides is determined in preset range determines the position of the guiding partition wall；
Step 2: concrete-bar component, the steel being installed on the bottom plate of the underground structure for the position for corresponding to reinforced concrete wall
The lower end of muscle component is implanted into the bottom plate of the underground structure；And
Step 3: the certain distance formwork supporting plate outside the concrete-bar component two sides, and concreting is carried out, it is formed after maintenance
The guiding partition wall of the building enclosure for existing underground structure.
In one of the embodiments, in the step 2, the method for concrete-bar component is installed on bottom plate are as follows: corresponding to
Vertical muscle is implanted on the bottom plate of the underground structure of the position of reinforced concrete wall, vertical muscle is extended downwardly from the top plate of underground structure
To the bottom plate of underground structure；Several row horizontal bars are set in vertical muscle side, and vertical muscle is fixedly connected with respective horizontal muscle.
The vertical muscle is fixedly connected with the corresponding horizontal bar by wire binding in one of the embodiments, or
Person is fixedly connected by welding manner.
In one of the embodiments, further include: be arranged between guiding partition wall and the bottom plate of the underground structure
Waterproof construction.
The waterproof construction includes several spaced sealing grouting pipes in one of the embodiments, described to stop
Water grouting pipe one end withstands on the plate upper surface of the underground structure downward, and the other end exposes outside the corresponding template.
The waterproof construction includes at least one waterstop in one of the embodiments, and the waterstop is along described
The extending direction of the seam of reinforced concrete wall and bottom plate joint arranges that the waterstop is included in the underground structure
Backplate surface digs out groove, and fills up groove filler in the groove, and the top surface of the groove filler is not less than described
The backplate surface of underground structure.
The waterproof construction is that concave-convex card slot blocks water in one of the embodiments, and the bumps card slot, which blocks water, to be included in
The backplate surface of the underground structure digs out several spaced rectangular channels.
A kind of construction method of foundation pit enclosure structure is used for the existing underground structure, includes the following steps:
Step A: the proposed foundation pit is enclosed in the cleaning existing underground structure, the setting-out in the existing underground structure
Protection structure is positioned；
Step B: guiding partition wall as described above is built in the two sides of the proposed foundation pit enclosure structure；
Step C: in addition to the bottom plate of the underground structure, the existing underground in the enclosed range of the guiding partition wall is cut
The part of structure；
Step D: the space in the guiding partition wall carries out backfill filling material；
Step E: the bottom plate of the underground structure in the enclosed range of the guiding partition wall is abolished with obstacle cleaning machine；
Step F: the foundation pit enclosure structure construction is carried out in the space that the guiding partition wall isolates, completes the base
Pit enclosure structure.
In one of the embodiments, in the step B, bored including elder generation in the plate upper surface of the underground structure
The vertical muscle is inserted into corresponding hole by hole, after the maintenance predetermined time to be solidified, carries out pullout tests.
In one of the embodiments, in the step B, including at the bottom of the guiding partition wall and the underground structure
Waterproof construction is set between plate.
In one of the embodiments, in the step D, the filling material is cohesive soil, sand or cement mix soil
One or several kinds of mixtures.
It in one of the embodiments, in the step E, including is hole-specifically turned round using steel bushing and abolishes technique, broken
Except the gap while bottom plate of the underground structure, generated after being pulled out to the steel bushing in the enclosed range of the guiding partition wall
It is backfilled.
The conducting wire partition wall construction method and foundation pit enclosure structure construction method of foregoing description at least have skill beneficial below
Art effect:
(1) working efficiency is effectively increased, it is only necessary to which guiding partition wall, and construction foundation pit wherein are set according to design requirement
Building enclosure reduces, construction work amount significantly without extending out foundation pit enclosure structure or full hall soil body backfill, difficulty of construction
Also reduce the efficiency for much directly enhancing and excavating the retrofit works such as the existing underground structure of increasing layer.
(2) reduce the construction safety risk of foundation pit enclosure structure, guiding partition wall by the operation area of foundation pit enclosure structure with
Other regions of underground structure are separated, on the one hand, can to avoid in the bottom plate for abolishing underground structure underground water pour in
Other non-operation areas；On the other hand, it is capable of forming closely when construction foundation pit building enclosure in the range of being oriented to partition wall and surrounding
It is lauched the slurry coat method liquid level of buried depth, Tu Bi is avoided to collapse；In addition, guiding partition wall can also add existing underground structure
Gu reinforcement improves the vertical bearing capacity of existing underground structure, to meet work of the heavy construction equipment on existing structure top plate
Industry requirement, carries out will not occurring collapsing when foundation pit enclosure structure construction wall or mud alters the problem of gushing.
(3) construction cost of foundation pit enclosure structure is reduced, need to only be built in a certain range of foundation pit enclosure structure two sides
Waterproof guiding partition wall can avoid underground water prominent the phenomenon that gushing with Tu Bi collapsing, also overcome the vertical carrying of existing underground structure
The problem of load of unable to stand the strain any longer support large-scale construction equipment, therefore no longer need to carry out other constructions, project amount substantially reduces, and subtracts
The input cost of human and material resources in work progress, financial resources is lacked.
Since there are the above advantage, the present invention can evade security risk, it can be improved and excavate the existing underground of add-story reconstruction
The working efficiency and construction quality of structure reduce human cost and labor intensity of workers, are more in line with modern architecture construction
The green construction requirement of low-risk, high efficiency, low cost.
Detailed description of the invention
Fig. 1 is the viewgraph of cross-section of guiding partition wall and foundation pit enclosure structure that one embodiment of the invention provides；
Fig. 2 is the A partial enlarged view of Fig. 1；
Fig. 3 is the waterproof construction schematic diagram of one embodiment of the invention；
Fig. 4 is the waterproof construction schematic diagram of further embodiment of this invention；
Fig. 5 is the waterproof construction schematic diagram of yet another embodiment of the invention；
Fig. 6-Figure 10 is the construction schematic diagram of each step of construction method of foundation pit enclosure structure in one embodiment of the invention.
In figure: 1- underground structure, 2- guiding partition wall, 3- foundation pit enclosure structure, 4- filling material, 5- obstacle cleaning machine, 11- top plate,
12- intermediate plate, 13- bottom plate, the vertical muscle of 21-, 22- horizontal bar, 23- steel reinforcement cage, 24- waterproof construction, 25- template, 26- sealing note
Waterstop, 30- rectangular channel, 31- rectangular teeth, 32- groove, 33- groove filler, 201- in the outer waterstop of slurry conduit, 27-, 28-
Reinforced concrete wall.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give presently preferred embodiments of the present invention.But the invention can be realized in many different forms, however it is not limited to this paper institute
The embodiment of description.It will be appreciated by those of ordinary skill in the art that without departing substantially from this hair as defined by appended claims
In the case where bright range, changes and improvements can be made to various embodiments described herein.In addition, for clear and letter
For the sake of clean, the description to well known function and construction may be omitted.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
As depicted in figs. 1 and 2, the guiding partition wall 2 in one embodiment of the invention, positioned at the underground structure 1 of existing building
Among, underground structure 1 includes top plate 11, the intermediate plate 12 of underground structure 1 and the bottom plate 13 of underground structure 1 of underground structure 1,
Guiding partition wall 2 includes the reinforced concrete wall 201 that two sides is oppositely arranged, the spatial dimension between two sides reinforced concrete wall 201
For foundation pit enclosure structure 3 to be arranged, reinforced concrete wall 201 extends downwardly into underground structure 1 from the top plate 11 of underground structure 1
Bottom plate 13, concrete-bar component is provided in every face reinforced concrete wall 201, and the lower end of the concrete-bar component is implanted into the underground knot
In the bottom plate of structure.Reinforced concrete wall 201 that this design is poured after can guaranteeing and the existing underground structure 1 that is previously poured it
Between bond strength, improve 201 performance of reinforced concrete wall, ensure that existing underground structure 1 excavates the peace of add-story reconstruction whole process
Entirely.Reinforced concrete wall 201 in production, can outside concrete-bar component two sides certain distance formwork supporting plate 25, and in two pieces of templates 25
Between space in carry out concreting, can be formed after maintenance.
The guiding partition wall 2 of setting carries out excavation add-story reconstruction to existing underground structure 1 for solving groundwater level region
The underground water occurred when work is prominent to gush problem, and when progress building enclosure construction, can not ensure that enough slurry coat method liquid levels are high
The problem of spending and Tu Bi caused to collapse.By in existing underground structure 1 proposed foundation pit enclosure structure two sides build guiding every
Wall 2 is separated the operation area of foundation pit enclosure structure 3 and other regions of underground structure 1, on the one hand, can to avoid
Underground water pours in other non-operation areas when abolishing the bottom plate 13 of underground structure 1；On the other hand, in construction foundation pit building enclosure 3,
It is capable of forming the slurry coat method liquid level close to underground water buried depth, Tu Bi is avoided to collapse；In addition, guiding 2 difficulty of construction of partition wall
Small, concrete-bar component plays the role of carrying out reinforcement and strengthening to existing underground structure, improves the vertical carrying of existing underground structure 1
Power, can satisfy job requirements of the heavy construction equipment on underground structure top board 11, and when construction is not in collapse wall or mud
Alter the problem of gushing.
With reference to Fig. 1, in some embodiments, concrete-bar component includes vertically arranged vertical muscle 21, the lower end of vertical muscle 21
Be implanted in the bottom plate 13 of underground structure 1, the outside of vertical muscle 21 be provided with several row horizontal bars 22, vertical muscle 21 with it is corresponding
Horizontal bar 22 is fixedly connected, and forms steel reinforcement cage 23.The lower end of vertical muscle 21 is implanted in the bottom plate of underground structure, can sufficiently be protected
Bond strength between the reinforced concrete wall 201 being poured after card and the underground structure being previously poured 1 improves reinforced concrete wall
201 performances ensure that existing underground structure excavates the safety of add-story reconstruction whole process；Vertical muscle 21 and 22 shapes of respective horizontal muscle
At steel reinforcement cage 23 supporting degree and stability are more preferable on the whole, it is stronger to the effect of the reinforcement and strengthening of existing underground structure, improve
The vertical bearing capacity of existing underground structure preferably meets job requirements of the heavy construction equipment on existing structure top plate,
Wall will not occur collapsing in building enclosure when constructing or mud alters the problem of gushing.According to practical engineering experience, vertical muscle 21 and corresponding water
Flat muscle 22 is fixedly connected by wire binding, or is fixedly connected by welding manner.It is to be appreciated that in some other implementation
In example, concrete-bar component can also be individually vertical muscle 21 or the bar construction of other forms, herein with no restriction.
With reference to Fig. 1 and Fig. 2, in some embodiments, in order to preferably prevent work progress underground meeting seepage flow to non-construction
Area avoids influencing normal construction, the seam crossing setting between every face reinforced concrete wall 201 and the bottom plate 13 of underground structure 1
Waterproof construction 24.
Referring to figs. 2 and 3, in one embodiment of the invention, waterproof construction 24 includes that several spaced sealing slip castings are led
Pipe 26,26 one end of sealing grouting pipe are embedded in downward in reinforced concrete wall 201, and other end level court exposes outside armored concrete
Wall 201；The injection slurry with certain pressure is forcedly injected armored concrete 201 by sealing grouting pipe 26 using grouting pump
In the intergranular hole soil layer of the soil layer of seam between the bottom plate 13 of underground structure 1, compacted and packing action is played, is forced
The intrapore partially or mostly water and air discharge of soil layer prevents to accelerate the stabilization by consolidation of soil layer or control water flow is logical
It crosses and plays the effect of improving soil texture.Injection slurry is formulated by superfine cement slurry plus appropriate waterglass.Injection slurry injection
Behind stratum, waterglass slurries and ingredient can generate silica gel with calcium carbonate chemically reactive in soil layer；Cement and soil particle and soil layer
In other to fill out object cementing.Injection slurry plays splitting and seepage flow packing action by hole in soil layer, and institute is secured with soil layer through place
It is cementing.Preferably, sealing grouting pipe 26 can be L shape, and 26 one end of sealing grouting pipe is embedded in armored concrete straight down
Within the walls, other end level exposes outside reinforced concrete wall.L-shaped 26 simple shape of sealing grouting pipe, it is suitable to be conducive to injection slurry
Benefit enters in the intergranular hole soil layer of soil layer of the seam between armored concrete 201 and bottom plate 13.
Waterproof construction 24 can be waterstop.With specific reference to Fig. 4, in another embodiment, waterproof construction 24 includes twice
The outer waterstop 27 and interior waterstop 28 being set side by side, interior waterstop 28 and outer waterstop 27 are each along reinforced concrete wall 201
It is arranged with the extending direction of the seam of 13 joint of bottom plate, interior waterstop 28 and outer waterstop 27 include being set to underground structure
The groove 32 and groove filler 33 on 1 13 surface of bottom plate.Groove filler 33 can be swollen by the water suction of itself water absorption factor after meeting water
It is swollen, increase own vol expansion, the gap between compacted New-old concrete forms fluid-tight plasticity colloid, thoroughly blocks
Gap, and there is whole machine balancing and self-healing function, reach water-stagnating effect.Engineering practice proves that water-swellable sealant is a kind of
The groove filler 33 of function admirable, it is the sealant of a kind of one-pack-type water-swellable, moisture-curable, elastic packing, because stopping
Glue has sealing, water-stagnating effect well.Water-swellable sealant one is hardened reform into the good rubber elastomer of restoration,
Own vol expansion, filling gap play sealing, water-stagnating effect after immersion.As building, the water channel peripheral water stopping of architectural engineering
It is extremely wide that material can play excellent performance, scope of use.
With reference to Fig. 5, in another embodiment, waterproof construction 24 is that concave-convex card slot blocks water, and concave-convex card slot blocks water including several
It is set to the rectangular channel 30 and several rectangles for being set to 201 lower end surface of reinforced concrete wall on 13 surface of bottom plate of underground structure 1
Tooth 31, rectangular teeth 31 are inserted into respective rectangular slot 30 respectively.It is close that the rectangular channel 30 and rectangular teeth 31 being meshed form labyrinth type
Envelope, labyrinth sealing belong to non-contacting seal, are hindered in the way of consuming its energy by the local losses of increase fluid
Fluid stopping body is to outward leakage.
In addition, including the following steps: the present invention also provides a kind of construction method for being oriented to partition wall
Step 1: according to design requirement, the setting-out on the bottom plate 13 of underground structure 1, in the position of proposed foundation pit enclosure structure 3
The position of two sides reinforced concrete wall 201 is determined in the preset range for the two sides set, so that it is determined that the position of guiding partition wall 2；
Step 2: being implanted into vertical muscle on the bottom plate 103 of the underground structure 1 for the position for corresponding to reinforced concrete wall 201
21, vertical muscle 21 extends downwardly into the bottom plate 13 of underground structure 1 from the top plate 11 of underground structure 1, with reference to Fig. 2, in order to promote branch
Support degree, vertical muscle 21 are set side by side with two；Several row horizontal bars 22 are set in vertical 21 side of muscle, and by vertical muscle 21 and phase
Horizontal bar 22 is answered to be fixedly connected to form steel reinforcement cage 23；And
Step 3: the certain distance formwork supporting plate 25 outside 23 two sides of steel reinforcement cage, and concreting is carried out, it is formed and is used after maintenance
In the guiding partition wall 2 of the foundation pit enclosure structure 3 of existing underground structure 1.
The mounting means of above-mentioned steel reinforcement cage 23 is more flexible, can be finely tuned at any time vertically according to the size in actual installation space
The setting position of muscle 21 and horizontal bar 22.In some other embodiment, it can according to need and reinforcing bar is made on the ground in advance
Cage 23, and the lower end of steel reinforcement cage 23 is implanted into the bottom plate 13 of the underground structure 1, the invention is not limited in this regard.
Vertical muscle 21 is fixedly connected with respective horizontal muscle 22 by wire binding, or is fixedly connected by welding manner.
With reference to Fig. 2, in one embodiment of the invention, further includes: between guiding partition wall 2 and the bottom plate 13 of underground structure 1
Waterproof construction 24 is set.
With reference to Fig. 3, in one embodiment of the invention, waterproof construction 24 includes several spaced sealing grouting pipes 26,
26 one end of sealing grouting pipe withstands on 13 upper surface of bottom plate of underground structure 1 downward, and the other end exposes outside corresponding template 25.
Waterproof construction 24 can also be waterstop.With specific reference to Fig. 4, in further embodiment of this invention, waterproof construction 24 is wrapped
The outer waterstop 27 and interior waterstop 28 that twice are set side by side are included, interior waterstop 28 and outer waterstop 27 are each along armored concrete
The extending direction of the seam of wall 201 and 13 joint of bottom plate arranges that interior waterstop 28 and outer waterstop 27 are included in underground knot
Groove 32 is dug out on 13 surface of bottom plate of structure 1, and groove filler 33 is filled up in groove 32 out, and the top surface of groove filler 33 is not
Lower than 13 surface of bottom plate of underground structure 1.In some other embodiment, if waterstop can be set to arterial highway, the present invention is to this
With no restriction.Engineering experience proves, the preferred water-swellable sealant of groove filler 33.
With reference to Fig. 5, in yet another embodiment of the invention, waterproof construction 24 includes that concave-convex card slot blocks water, and concave-convex card slot blocks water packet
Several spaced rectangular channels 30 dug out on 13 surface of bottom plate of underground structure 1 are included, in 201 mistake of pouring reinforcement concrete wall
Cheng Zhong forms rectangular teeth 31, rectangular channel 30 and rectangular teeth 31 in the position that 201 lower end surface of reinforced concrete wall corresponds to rectangular channel 30
Intermeshing forms labyrinth sealing, prevents or reduce water flow from inside seepage flow to outside.
In addition, Fig. 6-Figure 10 is one embodiment of the invention the present invention also provides a kind of construction method of foundation pit enclosure structure 3
The construction schematic diagram of middle each step of foundation pit enclosure structure construction method.Specifically, foundation pit enclosure structure construction method includes such as
Lower step:
Step A: referring to Fig. 6, clear up existing underground structure 1, right according to design requirement setting-out in existing underground structure 1
Proposed foundation pit enclosure structure 3 is positioned；
Step B: referring to Fig. 7, is built according to design requirement in the two sides of the position of proposed foundation pit enclosure structure 3 and is led as above-mentioned
To partition wall 2；
Step C: referring to Fig. 8, in addition to the bottom plate 13 of underground structure 1, cuts described existing in guiding the enclosed range of partition wall 2
The part of underground structure 1；
Step D: with continued reference to Fig. 8, the space in guiding the enclosed range of partition wall 2 carries out backfill filling material 4；
Step E: referring to Fig. 9, is hole-specifically removed obstacles with obstacle cleaning machine 5 and abolishes the bottom plate of underground structure 1 in guiding the enclosed range of partition wall 2
13, every hole backfills hole internal pore after the completion of removing obstacles in time；
It is due to the water level located underground of bottom plate 13 of existing underground structure 1 that filling material 4 is backfilled before the step abolishes bottom plate
Hereinafter, directly abolishing bottom plate 13 so if not backfilling, then underground water and soil can pour in the space that guiding partition wall 2 surrounds, and cause
It also will affect surrounding enviroment while soil erosion, it is also possible to bottom plate 13 be caused to generate the sedimentation of burst.Therefore bottom plate is being abolished
Before 13, first the entire space between guiding partition wall 2 is filled with backfill material, then steel sleeve is recycled hole-specifically to abolish bottom plate
13, and every hole abolish after need to backfill hole internal pore.
Step F: referring to Figure 10, carries out foundation pit enclosure structure 3 in the space that guiding partition wall 2 isolates and constructs, completes base
Pit enclosure structure 3.In high water level area, foundation pit enclosure structure 3 such as wall, bored concrete pile will use slurry coat method in construction,
It just can guarantee that the soil body will not collapse wall when slurry coat method liquid level is not less than level of ground water, that is to say, that the liquid level of slurry coat method
It needs to be higher than bottom plate 13.If the construction of ground-connecting-wall or campshed does not carry out in filling material 4, slurry coat method will fill guiding
Whole spaces between partition wall 2 are easily caused mud to alter and are gushed, thus foundation pit enclosure structure 3 needs to fill in the soil body in the step
In the environment of construct.
In one embodiment of the invention, in above-mentioned steps B, drill including elder generation in 13 upper surface of bottom plate of underground structure 1, it will
The vertical muscle 21 is inserted into corresponding hole, after the maintenance predetermined time to be solidified, carries out pullout tests.It further include in guiding partition wall
Waterproof construction 24 is set between 2 and the bottom plate 13 of underground structure 1.
In one embodiment of the invention, waterproof construction 24 includes several spaced sealing grouting pipes 26, sealing slip casting
Conduit 26 is 13 upper surface of bottom plate that L shape and one end withstand on underground structure 1 downward, and other end level outwardly and exposes corresponding template
25。
In further embodiment of this invention, waterproof construction 24 includes the outer waterstop 27 and interior waterstop that twice are set side by side
28, the extending direction of interior waterstop 28 and outer waterstop 27 each along reinforced concrete wall 201 and the seam of 13 joint of bottom plate
Groove 32 is dug out on 13 surface of bottom plate that arrangement, interior waterstop 28 and outer waterstop 27 are included in underground structure 1, and in groove out
Groove filler 33 is filled up in 32, the top surface of groove filler 33 is not less than 13 surface of bottom plate of underground structure 1.Some other
In embodiment, if waterstop can be set to arterial highway, the invention is not limited in this regard.Engineering experience proves, groove filler
33 preferred water-swellable sealants.
In yet another embodiment of the invention, waterproof construction 24 includes that concave-convex card slot blocks water, and concave-convex card slot, which blocks water, is included in underground
The rectangular channel 30 for several spaced and parallel settings that 13 surface of bottom plate of structure 1 is dug out, in 201 process of pouring reinforcement concrete wall
In, rectangular teeth 31,31 phase of rectangular channel 30 and rectangular teeth are formed in the position that 201 lower end surface of reinforced concrete wall corresponds to rectangular channel 30
Mutually engagement forms labyrinth sealing, prevents or reduce water flow from inside seepage flow to outside.
In one embodiment of the invention, in above-mentioned steps D, filling material 4 used is cohesive soil, sand or cement mix soil
One or several kinds of mixtures.
In one embodiment of the invention, in above-mentioned steps E, including is hole-specifically turned round using steel bushing and abolish technique, utilized
While steel bushing abolishes bottom plate 13 of underground structure 1 in guiding the enclosed range of partition wall 2, using consistent with 4 ingredient of filling material
The gap that the mixture of material such as cohesive soil, sand or cement mix soil one or several kinds generates after pulling out to the steel bushing
It is backfilled, the diameter of steel bushing is preferably between 1.2~1.5m.
It is directed to phreatic high, when carrying out excavation add-story reconstruction to existing underground mechanism 1, one kind provided by the invention
It is oriented to the construction method of partition wall 2 and its construction method and foundation pit enclosure structure 3, passes through the proposed foundation pit in existing underground structure 1
Guiding partition wall 2 is built in the two sides of building enclosure 3, by other regions of the operation area of foundation pit enclosure structure 3 and existing underground structure 1
Separated.On the one hand, can to avoid when abolishing the bottom plate 13 of underground structure 1 underground water pour in other non-operation areas；Separately
On the one hand, in construction foundation pit building enclosure 3, it is capable of forming the slurry coat method liquid level close to underground water buried depth, avoids soil
Wall collapses；In addition, guiding 2 difficulty of construction of partition wall is small, can also reinforcement and strengthening be carried out to existing underground structure 1, improve underground knot
The vertical bearing capacity of structure 1.Foundation pit enclosure structure 3 provided by the present invention for existing underground structure 1 and its guiding partition wall 2 are applied
Work method be directed to existing this specified conditions of underground structure 1, it is big to overcome existing method security risk, long construction period, warp
The disadvantages of Ji property is poor is more in line with the green construction requirement of the low-risk, high efficiency, low cost of modern architecture construction.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (20)
1. a kind of guiding partition wall, which is characterized in that among structure located underground, the armored concrete that is oppositely arranged including two sides
Wall, the space between reinforced concrete wall described in two sides is for being arranged foundation pit enclosure structure；The reinforced concrete wall is from described
The top plate of underground structure extends downwardly into the bottom plate of the underground structure, and every one side armored concrete is provided with reinforcing bar within the walls
Component, the lower end of the concrete-bar component are implanted into the bottom plate of the underground structure.
2. being oriented to partition wall according to claim 1, which is characterized in that the concrete-bar component includes vertically arranged vertical muscle,
The lower end of the vertical muscle is implanted in the bottom plate of the underground structure, and it is horizontal that the side of the vertical muscle is provided with several rows
Muscle, the vertical muscle are fixedly connected with the corresponding horizontal bar.
3. being oriented to partition wall according to claim 2, which is characterized in that the vertical muscle and the corresponding horizontal bar pass through steel wire
It ties up and is fixedly connected, or be fixedly connected by welding manner.
4. -3 any guiding partition wall according to claim 1, which is characterized in that the reinforced concrete wall and the underground are tied
Waterproof construction is arranged in seam crossing between the bottom plate of structure.
5. being oriented to partition wall according to claim 4, which is characterized in that the waterproof construction includes several spaced sealings
Grouting pipe, sealing grouting pipe one end are embedded in the armored concrete within the walls downward, and the other end exposes outside the reinforcing bar
Concrete walls.
6. being oriented to partition wall according to claim 4, which is characterized in that the waterproof construction includes described at least one waterstop
Waterstop arranges that the waterstop includes setting along the reinforced concrete wall and the extending direction of the seam of bottom plate joint
In the groove and groove filler of the backplate surface of the underground structure.
7. being oriented to partition wall according to claim 6, which is characterized in that the groove filler is water-swellable sealant.
8. being oriented to partition wall according to claim 4, which is characterized in that the waterproof construction is that concave-convex card slot blocks water, described recessed
Convex clip slot blocks water rectangular channel including several backplate surfaces for being set to the underground structure and several to be set to the reinforcing bar mixed
The rectangular teeth of solidifying cob wall bottom surface, the rectangular teeth are inserted into respectively in the corresponding rectangular channel.
9. a kind of construction method for being oriented to partition wall as described in claim any one of 1-8, which comprises the steps of:
Step 1: the setting-out on the bottom plate of the underground structure, the preset range in the two sides of the position of the proposed building enclosure
The position of reinforced concrete wall described in interior determining two sides, so that it is determined that the position of the guiding partition wall；
Step 2: concrete-bar component, the reinforcing bar group being installed on the bottom plate of the underground structure for the position for corresponding to reinforced concrete wall
The lower end of part is implanted into the bottom plate of the underground structure；And
Step 3: the certain distance formwork supporting plate outside the concrete-bar component two sides, and concreting is carried out, after maintenance described in formation
The guiding partition wall of building enclosure for existing underground structure.
10. being oriented to the construction method of partition wall according to claim 9, which is characterized in that in the step 2, pacify on bottom plate
The method for filling concrete-bar component are as follows: be implanted into vertical muscle on the bottom plate of the underground structure for the position for corresponding to reinforced concrete wall, erect
The bottom plate of underground structure is extended downwardly into muscle from the top plate of underground structure；In vertical muscle side, several row horizontal bars are set, and
Vertical muscle is fixedly connected with respective horizontal muscle.
11. being oriented to the construction method of partition wall according to claim 10, which is characterized in that the vertical muscle and the corresponding water
Flat muscle is fixedly connected by wire binding, or is fixedly connected by welding manner.
12. according to claim 9 or 10 it is described guiding partition wall construction method, which is characterized in that further include: it is described guiding every
Waterproof construction is set between wall and the bottom plate of the underground structure.
13. being oriented to the construction method of partition wall according to claim 12, which is characterized in that the waterproof construction includes several
Every the sealing grouting pipe of setting, sealing grouting pipe one end withstands on the plate upper surface of the underground structure downward, separately
One end exposes outside the corresponding template.
14. being oriented to the construction method of partition wall according to claim 12, which is characterized in that the waterproof construction includes at least one
A waterstop, the waterstop is arranged along the reinforced concrete wall and the extending direction of the seam of bottom plate joint, described
Waterstop includes the groove dug out of backplate surface in the underground structure, and fills up groove filler in the groove, institute
The top surface for stating groove filler is not less than the backplate surface of the underground structure.
15. being oriented to the construction method of partition wall according to claim 12, which is characterized in that the waterproof construction is concave-convex card slot
It blocks water, the bumps card slot blocks water including digging out several spaced rectangular channels in the backplate surface of the underground structure.
16. a kind of construction method of foundation pit enclosure structure is used for the existing underground structure, which is characterized in that including walking as follows
It is rapid:
Step A: the cleaning existing underground structure, the setting-out in the existing underground structure, to the proposed foundation pit enclosure knot
Structure is positioned；
Step B: the guiding as described in any one of claim 1-8 claim is built in the two sides of the proposed foundation pit enclosure structure
Partition wall；
Step C: in addition to the bottom plate of the underground structure, the existing underground structure in the enclosed range of the guiding partition wall is cut
Part；
Step D: the space in the enclosed range of the guiding partition wall carries out backfill filling material；
Step E: the bottom plate of the underground structure in the enclosed range of the guiding partition wall is abolished；
Step F: the foundation pit enclosure structure construction is carried out in the space that the guiding partition wall isolates, the foundation pit is completed and encloses
Protection structure.
17. the construction method of 6 foundation pit enclosure structures according to claim 1, which is characterized in that in the step B, including
It first drills in the plate upper surface of the underground structure, the vertical muscle is inserted into corresponding hole, the pre- timing of maintenance to be solidified
Between after, carry out pullout tests.
18. the construction method of 6 foundation pit enclosure structures according to claim 1, which is characterized in that in the step B, including
Waterproof construction is set between guiding partition wall and the bottom plate of the underground structure.
19. the construction method of 6 foundation pit enclosure structures according to claim 1, which is characterized in that described in the step D
Filling material is the mixture of cohesive soil, sand or cement mix soil one or several kinds.
20. the construction method of 6 foundation pit enclosure structures according to claim 1, which is characterized in that in the step E, including
It is hole-specifically turned round using steel bushing and abolishes technique, abolishing the same of the bottom plate of the underground structure in the enclosed range of the guiding partition wall
When, the gap generated after pulling out to the steel bushing backfills.
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| CN201910579231.5A CN110387887A (en) | 2019-06-28 | 2019-06-28 | It is oriented to the construction method of partition wall and its construction method and foundation pit enclosure structure |
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