CN108018865A - The grooving technology of wall is led by the use of existing underpass as construction of diaphragm wall - Google Patents

The grooving technology of wall is led by the use of existing underpass as construction of diaphragm wall Download PDF

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Publication number
CN108018865A
CN108018865A CN201711248609.0A CN201711248609A CN108018865A CN 108018865 A CN108018865 A CN 108018865A CN 201711248609 A CN201711248609 A CN 201711248609A CN 108018865 A CN108018865 A CN 108018865A
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CN
China
Prior art keywords
wall
underpass
construction
led
top plate
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Pending
Application number
CN201711248609.0A
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Chinese (zh)
Inventor
姚燕明
申文明
杨金刚
王世君
黄毅
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姚燕明
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Application filed by 姚燕明 filed Critical 姚燕明
Priority to CN201711248609.0A priority Critical patent/CN108018865A/en
Publication of CN108018865A publication Critical patent/CN108018865A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/06Restraining of underground water
    • E02D19/12Restraining of underground water by damming or interrupting the passage of underground water
    • E02D19/18Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/18Bulkheads or similar walls made solely of concrete in situ

Abstract

A kind of grooving technology that wall is led by the use of existing underpass as construction of diaphragm wall, be engaged drilled pile of the underpass with station intersection diaphram wall both sides of constructing first, steel column is set up under the underpass longeron of diaphram wall both sides, per collateral support two;In situ face diaphram wall both sides 3m scopes, with 1:1.5 slopes excavate underpass top plate above earthing, and diaphram wall both sides are each outer to put 50mm constructions and lead wall;The clay back-filling in layers that 7% soil cement volume is used on the passage top plate of the wall back side is led, is compacted after being backfilled at subsurface 30cm, road surface cure process;Diaphram wall in the range of construction underpass.The problem of present invention leads wall by using existing underpass structure construction, and solving continuous wall trench underground machine need to construct on ground, and underpass position slurries can not store.

Description

The grooving technology of wall is led by the use of existing underpass as construction of diaphragm wall
Technical field
It is specifically a kind of to utilize existing underpass the present invention relates to a kind of technology for continuous wall trench underground The grooving technology of wall is led as construction of diaphragm wall.
Background technology
First to be constructed before continuous wall trench underground and lead wall, it is to ensure that diaphram wall position is accurate and grooving quality to lead wall It is crucial.Wall effect is led in diaphram wall to be had:1)Guiding is provided to chute forming machine grooving;2)Store mud and prevent notch from caving in; 3)The horizontal benchmark with vertical survey during as construction;4)Placed for steel reinforcement cage, tremie disposes, chute forming machine provides mark It is fixed.Diaphram wall should all set and lead wall, and leading wall form has prefabricated and two kinds cast-in-place, and cast-in-place wall shape of leading has " L " type or inverted " L " Type, can select according to different soil properties.When soil layer property is preferable, inverted "L" shape can be selected, or even pre-manufactured steel leads wall, is led using " L " type Wall, should strengthen leading wall behind is backfilling and compacted work.Wall is led using simple form reinforced concrete to the good location of top layer ground;In table Layer soil weak area wall is led using cast-in-place L-shaped reinforced concrete.The way for leading wall conventional at present is cast-in-situ steel reinforced concrete, thickness one As be 200 ~ 300mm, depth enters undisturbed soil with foundation and is advisable not less than 300mm, and wall top face needs 100-200mm above ground level, Prevent in the aproll stream groove inlet section of surrounding;Width requirement is more than the design width 50mm of diaphram wall.For subway station with Existing underpass intersects, and continuous wall trench underground machine need to construct on ground, and slurries can not store in underpass, conventional Construction requirement can not be met by leading wall way.
The content of the invention
It is an object of the invention in view of the above-mentioned defects in the prior art and insufficient, one kind is provided using existing for people Lower channel leads the grooving technology of wall as construction of diaphragm wall.
The technical solution used in the present invention is to achieve the above object:This leads wall by the use of existing underpass as construction Grooving technology, it comprises the following steps:
The first step:Construct the drilled piles that is engaged of underpass and station intersection diaphram wall both sides, and by station diaphragm wall And its pile foundation in the range of 1 meter is extracted;
Second step:Steel column is set up under the underpass longeron of diaphram wall both sides, per collateral support two, steel column ensures and leads to Road longeron is held out against;
3rd step:In situ face diaphram wall both sides 3m scopes, with 1:1.5 slopes excavate underpass top plate above earthing, 50mm constructions are put outside diaphram wall both sides are each and lead wall;
4th step:Concrete strength abolishes underpass structure after reaching 100%;
5th step:The clay back-filling in layers that 7% soil cement volume is used on the passage top plate of the wall back side is led, is backfilled to subsurface 30cm It is compacted behind place, road surface cure process;
6th step:Diaphram wall in the range of construction underpass.
The occlusion drilled pile uses the drilled pile of 1 meter of outside diameter, 0.8 meter of internal diameter, and stake is 15 meters long.
The steel column uses 609 steel pipes, wall thickness 16mm, and steel column bottom fixing end is stood in channel base plate, top plate branch Support in passage longeron bottom.
It need to be cut during described construction of guide wall and lead wall position underpass bottom plate and side wall protective layer, lead wall reinforcing bar and bottom plate With side wall reinforcement welding or bar planting, abolish and lead wall displacement underpass top plate, top plate transverse direction main reinforcement is welded with leading the vertical main reinforcement of wall Connect, make top plate integral with leading wall shape.
The passage abolish scope for diaphram wall both sides it is each it is outer put 50mm, abolish underpass top plate and side wall adopted With rope saw cut.
The channel base plate is blocked up to need layering to abolish, and abolishes thickness for every layer and is not more than 30cm, orlop wants side to abolish Side uses cement mixed ratio to be backfilled for 25% soil cement, and is tamped with plate vibration machine.
The road surface cure process need to be laid with one layer of 5 ~ 10cm stone, 16@of paving bilayer Φ, 250 two-way concrete slab nets, and with Guide wall of underground continuous wall bar connecting after-pouring C30 early strength concretes harden.
The present invention leads wall by using existing underpass structure construction, and solving continuous wall trench underground machine need to be on ground Construct, the problem of underpass position slurries can not store.
Brief description of the drawings
Fig. 1 is the construction location schematic diagram of the present invention.
Fig. 2 is the construction location schematic cross-section of the present invention.
Embodiment
As shown in Figure 1, the present invention is a kind of grooving technology that wall 3 is led by the use of existing underpass as construction, it includes Following steps:
The first step:Construction underpass 4 is engaged drilled pile 1 with station intersection diaphram wall both sides, and station is continuous Pile foundation in the range of wall and its 1 meter is extracted.The occlusion drilled pile 1 uses the drilled pile of 1 meter of outside diameter, 0.8 meter of internal diameter, and stake is long 15 meters.The purpose of construction interlocking pile plays cell wall reinforcing to separate the interstitial water between existing passage fender post and passage Effect.
Second step:As shown in Fig. 2, steel column 2 is set up under 4 longeron of diaphram wall both sides underpass, per collateral support two Root, steel column 2 ensure to hold out against with passage longeron.The steel column 2 uses 609 steel pipes, and wall thickness 16mm, 2 bottom of steel column is consolidated Fixed end is stood in channel base plate 4.3, and top plate 4.1 is supported in passage longeron bottom.
3rd step:In situ face diaphram wall both sides 3m scopes, with 1:1.5 slopes excavate 4 top plate 4.1 of underpass with Upper earthing, diaphram wall both sides are each outer to put 50mm constructions and leads wall 3.The street crossing of 3 position of wall is led in described need to being cut when leading the construction of wall 3 4 bottom plate 4.3 of passage and side wall protective layer, lead 3 reinforcing bar of wall and bottom plate 4.3 and side wall reinforcement welding or bar planting, abolish and lead 3 position of wall 4 top plate 4.1 of underpass, the horizontal main reinforcement of top plate 4.1 make top plate 4.1 and lead the formation of wall 3 one with leading the welding of 3 vertical main reinforcement of wall It is overall.
4th step:Concrete strength abolishes 4 structure of underpass after reaching 100%.It is underground that the passage, which abolishes scope, 50mm is put outside diaphragm wall both sides are each, 4 top plate 4.1 of underpass and side wall is abolished and artificial wind is used using rope saw cut, bottom plate 4.3 Pick cuts.The channel base plate 4.3 is blocked up to need layering to abolish, and abolishes thickness for every layer and is not more than 30cm, orlop wants side to break Flash trimming uses cement mixed ratio to be backfilled for 25% soil cement, and is tamped with plate vibration machine, to prevent 4.3 lower part of bottom plate Gap water, which is dashed forward, to be gushed.
5th step:The clay back-filling in layers that 7% soil cement volume is used on 3 back side passage top plate 4.1 of wall is led, is backfilled to ground Under face at 30cm after be compacted, 5 cure process of road surface.5 cure process of road surface need to be laid with one layer of 5 ~ 10cm stone, and paving is double-deck 16@of Φ, 250 two-way concrete slab nets, and hardened with 3 bar connecting after-pouring C30 early strength concretes of guide wall of underground continuous wall
6th step:Diaphram wall in the range of construction underpass 4.
The present invention leads wall 3 by using existing underpass structure construction, and solving continuous wall trench underground machine need to be on ground The problem of face is constructed, and underpass position slurries can not store.

Claims (7)

1. a kind of grooving technology that wall is led by the use of existing underpass as construction, it is characterised in that it comprises the following steps:
The first step:Construction underpass(4)Drilled pile is engaged with station intersection diaphram wall both sides(1), and by station Pile foundation in the range of diaphragm wall and its 1 meter is extracted;
Second step:Diaphram wall both sides underpass(4)Longeron(4.2)Lower erection steel column(2), per collateral support two, steel Column(2)Ensure and passage longeron(4.2)Hold out against;
3rd step:In situ face diaphram wall both sides 3m scopes, with 1:1.5 slopes excavate underpass(4)Top plate(4.1)With Upper earthing, diaphram wall both sides are each outer to put 50mm constructions and leads wall(3);
4th step:Concrete strength abolishes underpass after reaching 100%(4)Structure;
5th step:Lead wall(3)Back side passage top plate(4.1)The upper clay back-filling in layers using 7% soil cement volume, is backfilled to ground Under face at 30cm after be compacted, road surface(5)Cure process;
6th step:Construction underpass(4)In the range of diaphram wall.
2. the grooving technology according to claim 1 that wall is led by the use of existing underpass as construction, it is characterised in that institute The occlusion drilled pile stated(1)Using the drilled pile of 1 meter of outside diameter, 0.8 meter of internal diameter, stake is 15 meters long.
3. the grooving technology according to claim 1 that wall is led by the use of existing underpass as construction, it is characterised in that institute The steel column stated(2)Using 609 steel pipes, wall thickness 16mm, steel column(2)Bottom fixing end is stood in channel base plate(4.3), top plate (4.1)It is supported in passage longeron(4.2)Bottom.
4. the grooving technology according to claim 1 that wall is led by the use of existing underpass as construction, it is characterised in that institute That states leads wall(3)It need to be cut during construction and lead wall(3)Position underpass(4)Bottom plate(4.3)And side wall protective layer, lead wall(3)Steel Muscle and bottom plate(4.3)With side wall reinforcement welding or bar planting, abolish and lead wall(3)Position underpass(4)Top plate(4.1), top plate (4.1)Horizontal main reinforcement is with leading wall(3)Vertical main reinforcement welding, makes top plate(4.1)With leading wall(3)Shape is integral.
5. the grooving technology according to claim 1 that wall is led by the use of existing underpass as construction, it is characterised in that institute The passage stated abolish scope for diaphram wall both sides it is each it is outer put 50mm, abolish underpass(4)Top plate(4.1)And side wall uses Rope saw cut.
6. the grooving technology according to claim 5 that wall is led by the use of existing underpass as construction, it is characterised in that logical Road bottom plate(4.3)It is blocked up to need layering to abolish, abolish thickness for every layer and be not more than 30cm, orlop is wanted to mix using cement when abolishing Enter than being backfilled for 25% soil cement, and tamped with plate vibration machine.
7. according to any grooving technologies that wall is led by the use of existing underpass as construction of claim 1-6, its feature It is the road surface(5)Cure process need to be laid with one layer of 5 ~ 10cm stone, 16@of paving bilayer Φ, 250 two-way concrete slab nets, and with ground Lower diaphragm wall leads wall(3)Bar connecting after-pouring C30 early strength concretes harden.
CN201711248609.0A 2017-12-01 2017-12-01 The grooving technology of wall is led by the use of existing underpass as construction of diaphragm wall Pending CN108018865A (en)

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CN201711248609.0A CN108018865A (en) 2017-12-01 2017-12-01 The grooving technology of wall is led by the use of existing underpass as construction of diaphragm wall

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Application Number Priority Date Filing Date Title
CN201711248609.0A CN108018865A (en) 2017-12-01 2017-12-01 The grooving technology of wall is led by the use of existing underpass as construction of diaphragm wall

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111042104A (en) * 2019-12-30 2020-04-21 中国建筑第八工程局有限公司 Method for constructing diaphragm wall at existing underground structure
CN113073681A (en) * 2021-04-01 2021-07-06 上海市城市建设设计研究总院(集团)有限公司 Long and narrow underground structure adaptive to strong earthquake action and construction method thereof
CN113494076A (en) * 2021-07-20 2021-10-12 北京建工土木工程有限公司 Method for processing pile foundation left in diaphragm wall range

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101509263A (en) * 2009-03-09 2009-08-19 上海隧道工程股份有限公司 Digging method foundation pit structure of steel cover and plate cover, and construction method
CN105155579A (en) * 2015-08-11 2015-12-16 中铁建大桥工程局集团第五工程有限公司 Construction method for penetrating existing underground passage in open cutting of subway foundation pit
CN105951712A (en) * 2016-05-31 2016-09-21 中铁第四勘察设计院集团有限公司 Underground diaphragm wall construction method for cutting through underground structure under ground limitation condition
CN106869110A (en) * 2016-12-29 2017-06-20 上海市基础工程集团有限公司 The construction method of underground continuous wall of existing underground structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101509263A (en) * 2009-03-09 2009-08-19 上海隧道工程股份有限公司 Digging method foundation pit structure of steel cover and plate cover, and construction method
CN105155579A (en) * 2015-08-11 2015-12-16 中铁建大桥工程局集团第五工程有限公司 Construction method for penetrating existing underground passage in open cutting of subway foundation pit
CN105951712A (en) * 2016-05-31 2016-09-21 中铁第四勘察设计院集团有限公司 Underground diaphragm wall construction method for cutting through underground structure under ground limitation condition
CN106869110A (en) * 2016-12-29 2017-06-20 上海市基础工程集团有限公司 The construction method of underground continuous wall of existing underground structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111042104A (en) * 2019-12-30 2020-04-21 中国建筑第八工程局有限公司 Method for constructing diaphragm wall at existing underground structure
CN113073681A (en) * 2021-04-01 2021-07-06 上海市城市建设设计研究总院(集团)有限公司 Long and narrow underground structure adaptive to strong earthquake action and construction method thereof
CN113494076A (en) * 2021-07-20 2021-10-12 北京建工土木工程有限公司 Method for processing pile foundation left in diaphragm wall range

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Application publication date: 20180511

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