CN107268638A - Water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction and its construction method - Google Patents
Water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction and its construction method Download PDFInfo
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- CN107268638A CN107268638A CN201710686787.5A CN201710686787A CN107268638A CN 107268638 A CN107268638 A CN 107268638A CN 201710686787 A CN201710686787 A CN 201710686787A CN 107268638 A CN107268638 A CN 107268638A
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- side wall
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- waterproof
- foundation pit
- waterproof roll
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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
- 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
- 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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a kind of water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction, include building enclosure layer, back fill course, waterproof roll layer and agent structure side wall layer successively from outside to inside.The invention also discloses a kind of construction method of water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction, first, design of foundation pit contour line is translated laterally, secondly preparation of construction, starts again at and applies building enclosure, excavation pit, then agent structure is poured, side wall waterproof construction is finally carried out.Water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction and its construction method in the present invention are applied to the foundation ditch waterproof construction under various geological conditions, Deep Foundation Pit of Metro Stations waterproof effect under water rich strata geological conditions is particularly evident, avoid the injury that assembling reinforcement, casting concrete are caused to the waterproof roll laid when applying agent structure, difficulty of construction of the present invention is low, the triviality of personnel, machinery and construction method adjustment are reduced, construction cost is reduced.
Description
Technical field
The present invention relates to underground engineering design and technical field of construction, and in particular to a kind of deep base in water rich strata subway station
Cheat side wall waterproof construction technology.
Background technology
The Deep Foundation Pit of Metro Stations engineering of water rich strata, often underground water buried depth is shallower and water is compared with horn of plenty, foundation ditch
Once there is seepage by the stability for having a strong impact on foundation ditch and the safety of neighboring buildings in water-proof system.Existing Deep Foundation Pit of Metro Stations
Waterproof construction technology is not still very ripe, there is also some problems in waterproof construction technology and not enough.
Existing Deep Foundation Pit of Metro Stations side wall waterproof construction technology is to apply 20cm thickness first on the inside of diaphram wall
Cement mortar screeding layer, then the laying water-proof coiled material on screed-coat, finally applies agent structure.But in construction joint and attractive joint
Construction technology on, sealing coiled material often contacts leakiness with concrete, causes the formation in bubble or gap；In diaphram wall
During upper laying water-proof coiled material, due to ground-connecting-wall bulge or depression treatment is improper causes waterproof roll to contact leakiness with concrete,
Cause the formation of bubble.
Existing foundation ditch waterproof technique can apply certain thickness pea gravel concreten protection after laying waterproof slab coiled material
Layer protects waterproof roll, it is to avoid infringement when applying the operation such as bottom plate assembling reinforcement to waterproof roll, and on the outside of foundation ditch side wall
Protective layer can not be applied, that is to say, that existing foundation ditch side wall waterproof construction technology is not avoided that when applying agent structure, and bottom plate is tied up
The infringement of the operation to waterproof roll such as wire-tie.
The content of the invention
To solve above technical problem, the present invention provide a kind of water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction and
Its construction method, has been effectively ensured the basis that the Deep Foundation Pit of Metro Stations engineering of water rich strata is excavated in safety, quick, low cost
On can reach effective water-stagnating effect, reduce difficulty of construction, saved construction cost.
To achieve the above object, the invention provides following technical scheme：
The present invention provides a kind of water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction and its construction method, from outside to inside
Include building enclosure layer, back fill course, waterproof roll layer and agent structure side wall layer successively, the waterproof roll layer is laid on institute
State on the outside of agent structure side wall layer；
The waterproof roll of the waterproof roll layer is self-adhesive waterproof roll material；
Present invention also offers a kind of construction method of water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction, construction step
It is rapid as follows：
Step one, design of foundation pit contour line is translated laterally, reserves side wall waterproof coiled material construction groove；
Step 2, preparation of construction；
Step 3, applies building enclosure, excavates the foundation ditch；
Step 4, pours agent structure；
Step 5, after the completion for the treatment of that agent structure side wall is poured, in the side wall waterproof coiled material construction groove, from foundation ditch bottom
Start laying water-proof coiled material on the outside of the agent structure side wall, it is to be laid after the completion of fetch earth backfill and compacted backfill, complete
The waterproof construction of agent structure side wall.
Design of foundation pit contour line in the step one translates 80cm~100cm laterally.
Preparation of construction in the step 2 includes working out detailed waterproof construction technology scheme, carries out detailed technology and hands over
Bottom.
Optionally, the building enclosure in the step 3 is diaphram wall, and the excavation of foundation pit is extremely cheated after the design load of bottom
Carry out check of foundation subsoil.
Optionally, carried out before the step 4 pours agent structure the waterproof construction of base plate of foundation pit, existing first
The bottom of the foundation ditch applies 150cm thickness C20 concrete cushions, and secondly laying water-proof coiled material, then applies 50cm thickness C20 microliths
Concrete cover, finally applies base plate of foundation pit.
Optionally, the waterproof roll is self-adhesive waterproof roll material, is prevented during the waterproof roll laying described in adjacent two width
Water coiled material lapping width is not less than 10cm.
Optionally, the agent structure is one layer, in the waterproof roll process of deployment in the step 5, described
Volume waterproof material is directly laid to foundation ditch top plate, and the lap width of waterproof roll described in adjacent two width is not less than 10cm, then fetches earth
Backfill and tamp the backfill.
Optionally, the agent structure is more than two layers, in the waterproof roll process of deployment in the step 5,
When the waterproof roll is laid to the bottom plate of the last layer of the foundation ditch bottom at least 10cm stop laying, after fetching earth
It is backfilled to below the waterproof roll top edge laid at least 10cm, and tamps in the side wall waterproof coiled material construction groove
Below backfill, the waterproof roll top edge of laying of then being controlled oneself on the outside of the agent structure side wall at least 10cm after
The continuous laying waterproof roll, is not less than 10cm, and prevent described in adjacent two width with the waterproof roll lap width laid
The lap width of water coiled material is nor less than 10cm, the process of deployment of the waterproof roll in repeating said steps five, until paving
The waterproof roll being located on the agent structure side wall is laid untill foundation ditch top plate.
The present invention achieves following technique effect relative to prior art：
Water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction and its construction method in the present invention are applied to variously
Foundation ditch waterproof construction under the conditions of matter, the Deep Foundation Pit of Metro Stations waterproof effect under water rich strata geological conditions is particularly evident；
80cm distance is reserved between foundation ditch agent structure and enclosed structure in the present invention, is that artificial laying self-adhesive waterproof roll material is carried
Space is supplied；Tack coiled material of turning one's coat is laid on the outside of the smooth structure side wall in surface by the present invention, it is to avoid waterproof roll paving
When being located at building enclosure, due to building enclosure bulge or depression treatment is improper causes waterproof roll to contact uncompacted with concrete
Technical problem, while it also avoid applying agent structure, waterproof roll when assembling reinforcement, casting concrete to having laid
The injury caused；Difficulty of construction of the present invention is low, reduces the triviality of personnel, machinery and construction method adjustment, reduces and apply
Work cost.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is foundation ditch side wall waterproof construction schematic diagram of the present invention；
Fig. 2 is water rich strata foundation ditch waterproof construction technology flow chart of the present invention.
Description of reference numerals：1st, agent structure side wall；2nd, self-adhesive waterproof roll material；3rd, side wall waterproof coiled material construction groove；4、
Building enclosure；5th, base plate of foundation pit；6th, 50cm thickness C20 pea gravel concreten protective layers；7th, C20 concrete cushions after 150cm；8th, underground
Two layers of bottom plate；9th, B1 bottom plate；10th, foundation ditch top plate；11st, at 10cm below the bottom plate of two layers of underground；12nd, B1 bottom plate
At following 10cm；13rd, backfill.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is further detailed explanation.
The present invention provides a kind of water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction, including four-layer structure, such as Fig. 1 institutes
Show, building enclosure 4, backfill 13, self-adhesive waterproof roll material 2 and agent structure side wall 1, waterproof roll 2 are followed successively by from outside to inside
It is layed on agent structure side wall 1.
The present invention also provides a kind of construction method of water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction, such as Fig. 1-2
Shown, construction procedure is as follows：
Step one, design of foundation pit contour line is translated laterally, it is preferred that translation distance is 80~100cm, in foundation ditch main body
80~100cm distance is reserved between structure and building enclosure 4, side wall waterproof is provided for artificial laying self-adhesive waterproof roll material
Coiled material construction groove 3；
Detailed waterproof construction technology scheme is including but not limited to worked out in step 2, preparation of construction, carries out detailed technology
Tell somebody what one's real intentions are；
Step 3, it is diaphram wall to apply the building enclosure 4 in building enclosure 4, the present embodiment, excavates the foundation ditch extremely
Check of foundation subsoil is carried out after the bottom design load of hole；
Step 4, carries out waterproof construction to base plate of foundation pit 5, applies 150cm thickness C20 coagulations in the bottom of the foundation ditch first
Soil padding 7, the lap width secondly laid between self-adhesive waterproof roll material 2, adjacent two width self-adhesive waterproof roll material 2 is no less than
10cm, in favor of the seamless overlap joint between self-adhesive waterproof roll material 2, then applies 50cm thickness C20 pea gravel concreten protective layers
6, finally apply base plate of foundation pit 5.
Step 5, pours agent structure；
Step 6, the waterproof construction of agent structure side wall 1；After the completion for the treatment of that agent structure side wall 1 is poured, in side wall waterproof volume
In material construction groove 3, self-adhesive waterproof roll material 2, adjacent two width self-adhesion are laid the outside of agent structure side wall 1 since foundation ditch bottom
Lap width between property waterproof roll 2 is no less than 10cm, in favor of the seamless overlap joint between self-adhesive waterproof roll material 2.
In the present embodiment, as shown in figure 1, the agent structure is three layers, the tack waterproof in the step 6
In the process of deployment of coiled material 2, self-adhesive waterproof roll material 2 lay to two layers of underground bottom plate below 8 11 at 10cm when stop laying, take
Backfill, be backfilled to below the top edge of self-adhesive waterproof roll material 2 laid at least in side wall waterproof coiled material construction groove 3 after soil
At 10cm, and compacted backfill 13；Then in the outside of agent structure side wall 1, the self-adhesive waterproof roll material 2 for laying of controlling oneself it is upper
Continue to lay self-adhesive waterproof roll material 2 at least 10cm below edge, with the lap width for the self-adhesive waterproof roll material 2 laid
Not less than 10cm, and adjacent two width self-adhesive waterproof roll material 2 lap width nor less than 10cm, self-adhesive waterproof roll material 2 is spread
If to B1 bottom plate below 9 12 at 10cm when stop laying, after fetching earth in side wall waterproof coiled material construction groove 3 backfill, return
It is filled to below the top edge of waterproof roll 2 laid at least 10cm, and compacted backfill 13；Then in agent structure side wall 1
Outside, continue to lay self-adhesive waterproof roll material at least 10cm below the top edge of the self-adhesive waterproof roll material 2 for laying of controlling oneself
2, with the lap width of self-adhesive waterproof roll material 2 laid it is not less than 10cm, and adjacent two width self-adhesive waterproof roll material 2 is taken
Width is connect nor less than 10cm, self-adhesive waterproof roll material 2 is laid to laying is stopped during foundation ditch top plate 10, in side wall waterproof after fetching earth
Backfilled in coiled material construction groove 3, be backfilled to foundation ditch top plate 10, and compacted backfill 13, complete the waterproof construction of agent structure side wall.
It should be noted that the waterproof roll in the present invention is not limited to the tack waterproof volume in the embodiment of the present invention
Material, as long as the waterproof roll of side wall waterproof can be realized.Design of foundation pit contour line in the present embodiment translation distance laterally
Simply preferred scheme of the invention, as long as the distance value is configured to be embodied as manually lay self-adhesive waterproof roll material offer sky
Between.In the construction method of the present embodiment water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction, although including step 4
To the waterproof construction of base plate of foundation pit, but, representative must carry out directly carrying out step 5 and step after the step, step 3
Six can also complete the construction of side wall waterproof construction.The construction method of Deep Foundation Pit of Metro Stations side wall waterproof construction in the present invention
The situation that agent structure in embodiment is three layers is not limited to, agent structure can apply this hair when being one layer or more than two layers
The construction method of bright middle Deep Foundation Pit of Metro Stations side wall waterproof construction：Such as when agent structure is one layer, in tack waterproof volume
In the process of deployment of material 2, tack volume waterproof material 2 is directly laid to foundation ditch top plate 10, adjacent two width self-adhesive waterproof roll material 2
Lap width is not less than 10cm, and then fetch earth backfill and compacted backfill 13；When agent structure is more than two layers, in tack
In the process of deployment of waterproof roll 2, when self-adhesive waterproof roll material 2 is laid to the bottom plate of the last layer of foundation ditch bottom at 10cm
Stop laying, be backfilled to after fetching earth in side wall waterproof coiled material construction groove 3 below the top edge of self-adhesive waterproof roll material 2 laid
At at least 10cm, and compacted backfill 13, the self-adhesive waterproof roll material 2 of laying of then being controlled oneself in the outside of agent structure side wall 1
Continue to lay self-adhesive waterproof roll material 2 at least 10cm below top edge, the overlap joint of the self-adhesive waterproof roll material 2 with having laid is wide
Degree is not less than 10cm, and adjacent two width self-adhesive waterproof roll material 2 lap width nor less than 10cm, repeat above-mentioned tack and prevent
The process of deployment of water coiled material 2, until the self-adhesive waterproof roll material 2 being laid on agent structure side wall 2 is laid to foundation ditch top plate 10
Untill, then fetch earth and be backfilled to foundation ditch top plate 10 and compacted backfill 13, complete the waterproof construction of agent structure side wall 1.
Apply specific case in this specification to be set forth the principle and embodiment of the present invention, above example
Explanation be only intended to help to understand the method and its core concept of the present invention；Simultaneously for those of ordinary skill in the art,
According to the thought of the present invention, it will change in specific embodiments and applications.In summary, in this specification
Appearance should not be construed as limiting the invention.
Claims (10)
1. a kind of water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction, it is characterised in that include going along with sb. to guard him from outside to inside successively
Structure sheaf, back fill course, waterproof roll layer and agent structure side wall layer, the waterproof roll layer are laid on the agent structure side
On on the outside of wall layers.
2. water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction according to claim 1, it is characterised in that described anti-
The waterproof roll of water coiled material layer is self-adhesive waterproof roll material.
3. a kind of construction method of water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction, it is characterised in that construction procedure is such as
Under：
Step one, design of foundation pit contour line is translated laterally, reserves side wall waterproof coiled material construction groove；
Step 2, preparation of construction；
Step 3, applies building enclosure, excavates the foundation ditch；
Step 4, pours agent structure；
Step 5, after the completion for the treatment of that agent structure side wall is poured, in the side wall waterproof coiled material construction groove, from foundation ditch bottom in institute
State and start laying water-proof coiled material on the outside of agent structure side wall, it is to be laid after the completion of fetch earth backfill and compacted backfill, complete main body
The waterproof construction of structure side wall.
4. the construction method of water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction according to claim 3, its feature
It is, the design of foundation pit contour line in the step one translates 80cm~100cm laterally.
5. the construction method of water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction according to claim 3, its feature
It is, the preparation of construction in the step 2 includes working out detailed waterproof construction technology scheme, carries out detailed confide a technological secret.
6. the construction method of water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction according to claim 3, its feature
It is, the building enclosure in the step 3 is diaphram wall, the excavation of foundation pit carries out check of foundation subsoil to after cheating bottom design load.
7. the construction method of the water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction according to claim 3, it is special
Levy and be, carried out before the step 4 pours agent structure the waterproof construction of base plate of foundation pit, first in the foundation ditch
Bottom apply 150cm thickness C20 concrete cushions, secondly laying water-proof coiled material, then apply 50cm thickness C20 pea gravel concretens protect
Sheath, finally applies base plate of foundation pit.
8. the construction method of the water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction according to claim 3 or 7, it is special
Levy and be, the waterproof roll is self-adhesive waterproof roll material, waterproof roll described in adjacent two width is taken during the waterproof roll laying
Width is connect not less than 10cm.
9. the construction method of water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction according to claim 3, its feature
It is, the agent structure is one layer, in the waterproof roll process of deployment in the step 5, and the volume waterproof material is straight
Laying is connect to foundation ditch top plate, the lap width of waterproof roll described in adjacent two width is not less than 10cm, then fetch earth and backfill and tamp
The backfill.
10. the construction method of water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction according to claim 3, its feature
It is, the agent structure is more than two layers, in the waterproof roll process of deployment in the step 5, the waterproof volume
Stop laying when material is laid to the bottom plate of the last layer of the foundation ditch bottom at least 10cm, in the side wall waterproof roll
Fetch earth and be backfilled to below the waterproof roll top edge laid at least 10cm in construction groove, and tamp the backfill,
Then controlled oneself on the outside of the agent structure side wall and continue to lay at least 10cm below the waterproof roll top edge of laying
The waterproof roll, is not less than 10cm, and waterproof roll described in adjacent two width with the waterproof roll lap width laid
Lap width nor less than 10cm, the process of deployment of the waterproof roll in repeating said steps five, until being laid on institute
The waterproof roll stated on agent structure side wall is laid untill foundation ditch top plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686787.5A CN107268638A (en) | 2017-08-11 | 2017-08-11 | Water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction and its construction method |
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| CN201710686787.5A CN107268638A (en) | 2017-08-11 | 2017-08-11 | Water rich strata Deep Foundation Pit of Metro Stations side wall waterproof construction and its construction method |
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Cited By (6)
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|---|---|---|---|---|
| CN108978710A (en) * | 2018-08-01 | 2018-12-11 | 上海隧道工程有限公司 | From wall type subway station vibration insulation structure and its construction method |
| CN109056802A (en) * | 2018-09-04 | 2018-12-21 | 中国十九冶集团有限公司 | Waterproof construction process for side wall of comprehensive pipe rack |
| CN109403391A (en) * | 2018-11-05 | 2019-03-01 | 中铁二十二局集团轨道工程有限公司 | A kind of method of semi-underground Room station anti-floating under the conditions of rich water |
| CN111441793A (en) * | 2020-03-23 | 2020-07-24 | 中交路桥建设有限公司 | Construction method for subway station headwall in sandy gravel stratum |
| CN111827303A (en) * | 2020-07-27 | 2020-10-27 | 山东建勘集团有限公司 | Backfill-free foundation pit permanent support system and construction method thereof |
| CN113106994A (en) * | 2021-03-24 | 2021-07-13 | 中铁一局集团有限公司 | Wide waterproof plate laying method for cover-excavation top-down subway station |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108978710A (en) * | 2018-08-01 | 2018-12-11 | 上海隧道工程有限公司 | From wall type subway station vibration insulation structure and its construction method |
| CN109056802A (en) * | 2018-09-04 | 2018-12-21 | 中国十九冶集团有限公司 | Waterproof construction process for side wall of comprehensive pipe rack |
| CN109403391A (en) * | 2018-11-05 | 2019-03-01 | 中铁二十二局集团轨道工程有限公司 | A kind of method of semi-underground Room station anti-floating under the conditions of rich water |
| CN111441793A (en) * | 2020-03-23 | 2020-07-24 | 中交路桥建设有限公司 | Construction method for subway station headwall in sandy gravel stratum |
| CN111441793B (en) * | 2020-03-23 | 2021-09-28 | 中交路桥建设有限公司 | Construction method for subway station headwall in sandy gravel stratum |
| CN111827303A (en) * | 2020-07-27 | 2020-10-27 | 山东建勘集团有限公司 | Backfill-free foundation pit permanent support system and construction method thereof |
| CN113106994A (en) * | 2021-03-24 | 2021-07-13 | 中铁一局集团有限公司 | Wide waterproof plate laying method for cover-excavation top-down subway station |
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Application publication date: 20171020 |
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