CN104775439B - A kind of pattern foundation pit supporting structure sealing integral structure and its construction method - Google Patents
A kind of pattern foundation pit supporting structure sealing integral structure and its construction method Download PDFInfo
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- CN104775439B CN104775439B CN201510185268.1A CN201510185268A CN104775439B CN 104775439 B CN104775439 B CN 104775439B CN 201510185268 A CN201510185268 A CN 201510185268A CN 104775439 B CN104775439 B CN 104775439B
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- Prior art keywords
- concrete
- wall
- supporting structure
- foundation pit
- pit supporting
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Classifications
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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
Abstract
The invention discloses a kind of pattern foundation pit supporting structure sealing integral structure and its construction method.The pattern foundation pit supporting structure sealing integral structure includes being arranged at the concrete wall below foundation ditch peripheral ground, is provided with the cylindrical reinforcing steel cage of multiple vertical placements in concrete walls body；The construction method of the pattern foundation pit supporting structure sealing integral structure, it is characterised in that comprise the following steps：Guide groove excavates, lead wall pours, groove section grooving, place steel reinforcement cage and the cast step such as concrete.The present invention not only has the characteristics of rigidity of diaphram wall is big, stagnant water effect is good, it may have Row Piles Supporting Structure steel reinforcement cage lays easily advantage, and technology difficulty is little, and quick construction, quality are easily controlled, and are particularly suited for rich water sand-pebble layer.
Description
Technical field
The present invention relates to the realm of building construction, more particularly to a kind of pattern foundation pit supporting structure sealing integral structure and its construction party
Method.
Background technology
With the scale of underground space development increasing, under Complex Hydrogeological Conditions build the underground space by
High in water level, permeability is big, and causes the situation of foundation pit supporting construction seepage commonplace, and quality is wayward, also gives underground
The progress of main body structure construction causes difficulty.
Conventional vertical support system has campshed, hole-drilling interlocking pile, diaphram wall, cement soil wall etc. at present.Campshed
Although watch box system low cost, discontinuous due to stake, will typically increase the measures of preventing water such as water-stop curtain could guarantee system
Safe handling, has that many operations, occupied ground and permanent space are big, and stake and the combination of water sealing structure is present always
Hidden danger, increases the way of curtain behind campshed, and stake is respectively integrated with curtain, and discontinuity needs Guan Liang between stake and stake
Link, when curtain has leakage point behind the stake, be difficult to discover, it is also difficult to repair；Hole-drilling interlocking pile system, easily goes out in construction
Existing stake position sideslip and the problem of cutting deformation, once stake position sideslip and deformation, influence whether bitten pile support system supporting and
Stagnant water effect；Diaphram wall system supporting is safe and reliable, but amount of reinforcement is big, and places in groove section in constructing bulky
Square steel reinforcement cage need to take up an area the big hanging device of big, lifting capacity, while for preventing square steel reinforcement cage deformation from will take two-shipper
Lift operating type；Although cement wall support system seriality is preferably, can effective sealing, the intensity of soil cement is very low,
The substantial amounts of shaped steel of increase and substantial amounts of anchor pole is generally required using in make up the deficiency of intensity, is not only economically wasted, and
Construct below phreatic line substantial amounts of anchor pole, there is also certain potential safety hazard in work progress in itself.
Content of the invention
For overcoming the deficiencies in the prior art, the mesh of the present invention be to provide a kind of pattern foundation pit supporting structure sealing integral structure and its
Construction method, its not only have diaphram wall rigidity big, the characteristics of stagnant water effect is good, also have Row Piles Supporting Structure steel reinforcement cage
Easily advantage is laid, technology difficulty is little, and quick construction, quality are easily controlled, and are particularly suited for rich water sand-pebble layer, are not required to
Individually construction water stop curtain structure is separately set.
For reaching above-mentioned purpose, technical scheme below is present invention employs：
A kind of pattern foundation pit supporting structure sealing integral structure, it include being arranged at the concrete wall below foundation ditch peripheral ground,
The cylindrical reinforcing steel cage of multiple vertical placements is provided with concrete walls body.
A kind of construction method of pattern foundation pit supporting structure sealing integral structure, comprises the following steps：
1）Guide groove is excavated in earth's surface；
2）Wall is led groove sidewall casting concrete is led；
3）The earthwork is captured with chute forming machine in guide groove and form cuboid groove section, use mud off in cuboid groove section；
4）After cuboid groove section bottom scarfing cinder, cylindrical reinforcing steel cage is vertically placed in cuboid groove section and is fixed；
5）Cast conduit is transferred in cylindrical reinforcing steel cage, and carries out second clear bottom；
6）Concrete is poured into a mould until concrete liquid level is at the top of cuboid groove section by pouring into a mould conduit；
7）According to step 1）-6）Circulation construction, until form whole pattern foundation pit supporting structure water sealing structures.
Further, for the step 1）, levelling of the land and surveying and locating will be first carried out before guide groove excavation, guide groove can use
Hand excavation or mechanical equivalent of light excavation, channel widths=cuboid groove section width to be excavated+lead wall width.
Further, for the step 2）, wall is led for reinforced concrete structure, first want assembling reinforcement and prop up before pouring
Mould, it is highly 1000-1500mm to lead wall, leads wall top surface 50-100mm above ground level；Leading between wall every 1- after the completion of pouring
3m arranges interim wood support.
Further, for the step 4）, by mud circulation cleaning bottom, sediment thickness is not more than 5cm, the cylinder
Steel reinforcement cage can carry out step 1）-3）Shi Jinhang makes.
Further, for the step 5）, 4～10 times for concrete coarse aggregate particle diameter of the cast catheter diameter.
Further, for the step 6）, strength grade of concrete is not less than C20.
Beneficial effects of the present invention：（1）It is one that campshed, diaphram wall, water-stop curtain are closed three, makes full use of in groove section
Concreting and the overall structure that formed reaches support water stop while the purpose realized；（2）Place by design pitch in groove section
Cylindrical reinforcing steel cage, it is to avoid placed required for square steel reinforcement cage in groove section using conventional diaphram wall support system
Take up an area the big hanging device of big, lifting capacity, while avoiding the double-machine lifting crane operation that takes for preventing square steel reinforcement cage deformation
Mode；（3）Have grooving mechanization degree high using grooving machinery grooving, it is to avoid campshed formula supporting construction pore-forming easily collapses
Hole, the impact in pore forming process between adjacent holes；（4）Compared with using support pile+water stop curtain structure form, it is to avoid operation
Many, the big problem in occupied ground and permanent space；（5）Compared with hole-drilling interlocking pile, the requirement to concrete performance is relatively low, with
When it also avoid because drilling dislocation caused by leakage problems.
Description of the drawings
Fig. 1 is step 1）Floor map；
Fig. 2 is step 1）Generalized section；
Fig. 3 is step 2）Floor map；
Fig. 4 is step 2）Generalized section；
Fig. 5 is step 3）Floor map；
Fig. 6 is step 3）Generalized section；
Fig. 7 is step 4）Floor map；
Fig. 8 is step 4）Generalized section；
Fig. 9 is step 6）Floor map；
Figure 10 is step 6）Generalized section.
In figure：1- concrete walls；2- cylindrical reinforcing steel cages；3- guide grooves；4- leads wall；5- cuboid groove sections；6- mud；7-
Concrete；The 8- soil bodys.
Specific embodiment
As shown in figs. 9-10, a kind of pattern foundation pit supporting structure sealing integral structure, including being arranged at below foundation ditch peripheral ground
Concrete wall 1, is provided with the cylindrical reinforcing steel cage 2 of multiple vertical placements in concrete wall 1.
As Figure 1-10 shows, a kind of construction method of pattern foundation pit supporting structure sealing integral structure, comprises the following steps：
1）Guide groove 3 is excavated in earth's surface；
2）Wall 4 is led groove sidewall casting concrete is led；
3）The earthwork is captured in guide groove with chute forming machine and forms cuboid groove section 5, use 6 retaining wall of mud in cuboid groove section 5；
4）After the 5 bottom scarfing cinder of cuboid groove section, cylindrical reinforcing steel cage 2 is vertically placed in cuboid groove section 5 and is fixed；
5）Cast conduit is transferred in cylindrical reinforcing steel cage 2, and carries out second clear bottom；
6）Concrete is poured into a mould until concrete liquid level is at the top of cuboid groove section by pouring into a mould conduit；
7）According to step 1）-6）Circulation construction, until form whole pattern foundation pit supporting structure water sealing structures.
For the step 1）, levelling of the land and surveying and locating will be first carried out before the excavation of guide groove 3, guide groove can use hand excavation
Or mechanical equivalent of light excavation, channel widths=treat box cut section width+lead wall width.
For the step 2）, wall 4 is led for reinforced concrete structure, first wants assembling reinforcement formwork before pouring, lead wall high
Spend for 1000-1500mm, lead wall top surface 50-100mm above ground level；Being led after the completion of pouring arrange every 1-3m between wall interim
Wood support.
For the step 4）, by mud circulation cleaning bottom, sediment thickness is not more than 5cm.
For the step 5）, 4～10 times for concrete coarse aggregate particle diameter of the cast catheter diameter.
For the step 6）, strength grade of concrete is not less than C20.
Claims (3)
1. a kind of construction method of pattern foundation pit supporting structure sealing integral structure, it is characterised in that the pattern foundation pit supporting structure sealing integration
Structure includes being arranged at the concrete wall below foundation ditch peripheral ground（1）, concrete wall（1）Inside it is interval with multiple vertical
The cylindrical reinforcing steel cage of placement（2）,
Construction method is comprised the following steps：
1）Guide groove is excavated in earth's surface（3）；
2）Wall is led groove sidewall casting concrete is led（4）；
3）The earthwork is captured with chute forming machine in guide groove form cuboid groove section（5）, cuboid groove section（5）Interior use mud（6）Shield
Wall；
4）Cuboid groove section（5）After the scarfing cinder of bottom, in cuboid groove section（5）Interior vertical placement cylindrical reinforcing steel cage（2）And it is fixed；
5）In cylindrical reinforcing steel cage（2）Interior decentralization cast conduit, and carry out second clear bottom；
6）Concrete is poured into a mould until concrete liquid level is at the top of cuboid groove section by pouring into a mould conduit；
7）According to step 1）-6）Circulation construction, until form whole pattern foundation pit supporting structure water sealing structures；For the step 1）, guide groove
（3）Levelling of the land and surveying and locating will be first carried out before excavation, and guide groove can use hand excavation or mechanical equivalent of light excavation, channel widths=wait out
Digging cuboid groove section width+lead wall width；
For the step 2）, lead wall（4）For reinforced concrete structure, assembling reinforcement formwork before pouring, is first wanted, lead wall height
For 1000-1500mm, wall top surface 50-100mm above ground level is led；Leading after the completion of pouring arrange interim wood every 1-3m between wall
Support；
For the step 4）, by mud circulation cleaning bottom, sediment thickness is not more than 5cm, and the cylindrical reinforcing steel cage can enter
Row step 1）-3）Shi Jinhang makes.
2. the construction method of a kind of pattern foundation pit supporting structure sealing integral structure according to claim 1, it is characterised in that for
The step 5）, 4～10 times for concrete coarse aggregate particle diameter of the cast catheter diameter.
3. the construction method of a kind of pattern foundation pit supporting structure sealing integral structure according to claim 1, it is characterised in that for
The step 6）, strength grade of concrete is not less than C20.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510185268.1A CN104775439B (en) | 2015-04-20 | 2015-04-20 | A kind of pattern foundation pit supporting structure sealing integral structure and its construction method |
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| CN201510185268.1A CN104775439B (en) | 2015-04-20 | 2015-04-20 | A kind of pattern foundation pit supporting structure sealing integral structure and its construction method |
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| CN104775439B true CN104775439B (en) | 2017-03-15 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105544556A (en) * | 2015-12-29 | 2016-05-04 | 湖北中南勘察基础工程有限公司 | Foundation pit supporting construction technology combining equal-thickness cement-soil diaphragm wall and tubular piles |
| CN105937218A (en) * | 2016-04-27 | 2016-09-14 | 中国建筑第五工程局有限公司 | Construction method of underground diaphragm wall |
| CN105970916B (en) * | 2016-06-30 | 2019-05-03 | 中铁十八局集团第五工程有限公司 | A kind of construction method of deep basal pit plain concrete diaphram wall |
| CN108049393A (en) * | 2017-11-24 | 2018-05-18 | 中建铁投轨道交通建设有限公司 | For the attached building enclosure construction technology in subway station under the conditions of rich water thick sand bed |
| CN110106888A (en) * | 2019-04-02 | 2019-08-09 | 刘侨 | It is a kind of to exempt from horizontally-supported self-stabilization type foundation pit enclosure support construction construction method |
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| CN104775439A (en) | 2015-07-15 |
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Effective date of registration: 20200408 Address after: 100000 No. three Li River Road, Beijing, Haidian District, 9 Patentee after: CHINA CONSTRUCTION BASE BACILITIES Co.,Ltd. Address before: 518022, room 13, building 2105, Zhongjian building, No. 1302 Shennan East Road, Shenzhen, Guangdong, Luohu District Patentee before: CHINA CONSTRUCTION SOUTH INVESTMENT Co.,Ltd. |