CN104120712A - Construction method for underground diaphragm wall - Google Patents
Construction method for underground diaphragm wall Download PDFInfo
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- CN104120712A CN104120712A CN201310154503.XA CN201310154503A CN104120712A CN 104120712 A CN104120712 A CN 104120712A CN 201310154503 A CN201310154503 A CN 201310154503A CN 104120712 A CN104120712 A CN 104120712A
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Abstract
The invention discloses a construction method for an underground diaphragm wall. The construction method comprises the following steps of (1) constructing a guide wall, (2) manufacturing reinforcement cages, (3) manufacturing slurry, (4) grooving, (5) lifting and putting the reinforcement cages down, (6) pouring concrete underwater and (7) treating wall section joints. According to the construction method for the underground diaphragm wall, the problems that adjacent wall sections can not be aligned and leak water are solved, the effect is obvious, and the construction method can be applied and popularized in actual construction.
Description
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Technical field
The construction method that the present invention relates to a kind of diaphragm wall, belongs to technical field of building construction.
Background technology
Diaphragm wall excavation technology originates from Europe.It is to use the method for mud and tremie concrete to grow up according to well-digging and oil drilling, first nineteen fifty has adopted slurry coat method construction of diaphragm wall at Milan, ITA, 50 ~ sixties of 20th century, this technology was promoted at western developed country and the former Soviet Union, became effective technology in underground construction and Construction of Deep Foundation.
General diaphragm wall can be defined as: use on the ground special trench equipment, along foundation ditch periphery, according to the width section pulling in advance, excavate long and narrow groove, in digging process, for ensureing the stable of cell wall, groove adopts special mud off, after the channel excavation of each width section finishes, in groove section, place reinforcing cage, and build underwater concrete, then several width section white silks are become to an entirety, form a continuous underground wall body, i.e. cast-in-situ steel reinforced concrete wall type diaphragm wall.
In work progress, because construction method is improper or construction geology condition is special, may there is the problem that adjacent wall section can not be alignd and leak in existing diaphragm wall.
Summary of the invention
Goal of the invention: the object of the invention is to for the deficiencies in the prior art, a kind of construction method of diaphragm wall is provided, the method has been improved the problem that adjacent wall section can not be alignd and leak.
Technical scheme: the construction method of a kind of diaphragm wall of the present invention, comprises the steps:
(1) construction of guide wall, comprise smooth location, measurement and positioning, excavation and process spoir, assembling reinforcement, formwork supporting plate, concreting, form removal and stull be set and lead backfill outside wall, lead after wall form removal, along leading wall longitudinally every the meter She bis-little supports in road, leading wall by two supports, lead wall concrete and do not reach before design strength, forbid that heavy-duty machinery travels leading wall side, prevents from leading wall compressive deformation;
(2) fabrication of reinforcing cage, reinforcing cage should be made according to the division of diaphragm wall body arrangement of reinforcement and unit groove section, the reinforcing cage of unit groove section should be assembled into an entirety, while making reinforcing cage, to pre-determine the position of concreting conduit, because this part wants up/down perforation, thereby need to set up stirrup around and dowel is reinforced, and transverse reinforcement is placed on to outside, longitudinal reinforcement is placed on inner side;
(3) mud is made, and adopts bentonite slurry, and in mud, adds dispersing agent, tackifier, heavy weight additive and leak preventive;
(4) grooving, comprises grooving, the clear end and brush wall, in the working procedure of grooving, ensures that the height of mud liquid level is higher than the height of groundwater table, and is not less than and leads following 50 centimetres of wall.
(5) reinforcement cage hoisting and descending reinforcing cage, first reinforcing cage level is lifted by crane, then by the coordinated manipulation of main frame and auxiliary hoist, make reinforcing cage hang straight rear aligned notches, while inserting reinforcing cage, necessary alignment slot section center, suspension centre center, slowly vertically fall in groove, after in reinforcing cage insertion groove, should check whether its top height meets designing requirement, then establish crotch with cross-arm or on main muscle and be shelved on and lead on wall;
(6) underwater concreting, in whole casting process, tremie is answered 2～4M in Transducers Embedded in Concrete, the minimum depth must not be less than 1.5M, but the maximum insertion depth of conduit is no more than 9M, inserts too dark, will affect concrete flowing in conduit, sometimes also can make rising of steel cage, will keep the balanced rising of groove inner concrete face while building, speed of perfusion is generally 30～35M
3/ H;
(7) wall section joint processing, joint adopts locking notch pipe technique, before perfusion groove section concrete, at the pre-inserted diameter in the end of the groove section steel pipe equal with groove width, be locking notch pipe, after concrete initial set, steel pipe extracted slowly, make end form half blind mortise shape and connect shape.
Further, while whitewashing a wall, need to brush 20-30 time in described step (four), brush while thering is no mud and stop to iron, the old and new's concrete of guaranteeing joint face is in conjunction with closely.
Further, when concrete starts to build in described step (six), first in conduit, place water proof ball so that concrete can be by mud in pipe from the discharge of the pipe end while building.
Further, in described step (six), the spacing of tremie is less than or equal to 3m.
Further, the dispersing agent in described step (three) is bases, lignin sulfonate, compound phosphoric acid salt and humic acids, and tackifier are carboxymethyl cellulose.
Compared with prior art, its beneficial effect is in the present invention: the construction method of diaphragm wall of the present invention has been improved the problem that adjacent wall section can not be alignd and leak, and successful can be applied in practice of construction.
Detailed description of the invention
Below technical solution of the present invention is elaborated, but protection scope of the present invention is not limited to described embodiment.
embodiment 1:a construction method for diaphragm wall, comprises the steps:
(1) construction of guide wall, comprise smooth location, measurement and positioning, excavation and process spoir, assembling reinforcement, formwork supporting plate, concreting, form removal and stull be set and lead backfill outside wall, lead after wall form removal, along leading wall longitudinally every the meter She bis-little supports in road, leading wall by two supports, lead wall concrete and do not reach before design strength, forbid that heavy-duty machinery travels leading wall side, prevents from leading wall compressive deformation;
(2) fabrication of reinforcing cage, reinforcing cage should be made according to the division of diaphragm wall body arrangement of reinforcement and unit groove section, the reinforcing cage of unit groove section should be assembled into an entirety, while making reinforcing cage, to pre-determine the position of concreting conduit, because this part wants up/down perforation, thereby need to set up stirrup around and dowel is reinforced, and transverse reinforcement is placed on to outside, longitudinal reinforcement is placed on inner side;
(3) mud is made, and adopts bentonite slurry, and in mud, adds dispersing agent, tackifier, heavy weight additive and leak preventive;
(4) grooving, comprises grooving, the clear end and brush wall, in the working procedure of grooving, ensures that the height of mud liquid level is higher than the height of groundwater table, and is not less than and leads following 50 centimetres of wall.
(5) reinforcement cage hoisting and descending reinforcing cage, first reinforcing cage level is lifted by crane, then by the coordinated manipulation of main frame and auxiliary hoist, make reinforcing cage hang straight rear aligned notches, while inserting reinforcing cage, necessary alignment slot section center, suspension centre center, slowly vertically fall in groove, after in reinforcing cage insertion groove, should check whether its top height meets designing requirement, then establish crotch with cross-arm or on main muscle and be shelved on and lead on wall;
(6) underwater concreting, in whole casting process, tremie is answered 2～4M in Transducers Embedded in Concrete, the minimum depth must not be less than 1.5M, but the maximum insertion depth of conduit is no more than 9M, inserts too dark, will affect concrete flowing in conduit, sometimes also can make rising of steel cage, will keep the balanced rising of groove inner concrete face while building, speed of perfusion is generally 30～35M
3/ H;
(7) wall section joint processing, joint adopts locking notch pipe technique, before perfusion groove section concrete, at the pre-inserted diameter in the end of the groove section steel pipe equal with groove width, be locking notch pipe, after concrete initial set, steel pipe extracted slowly, make end form half blind mortise shape and connect shape.
Wherein: while whitewashing a wall in described step (four), need to brush 20-30 time, brush while thering is no mud and stop to iron, the old and new's concrete of guaranteeing joint face is in conjunction with closely.
When concrete starts to build in described step (six), first in conduit, place water proof ball so that concrete can be by mud in pipe from the discharge of the pipe end while building, the spacing of tremie is less than or equal to 3m.
Dispersing agent bag in described step (three) is for drawing together bases, lignin sulfonate, compound phosphoric acid salt and humic acids, and tackifier are carboxymethyl cellulose.
As mentioned above, although represented and explained the present invention with reference to specific preferred embodiment, it shall not be construed as the restriction to the present invention self.Not departing under the spirit and scope of the present invention prerequisite of claims definition, can make in the form and details various variations to it.
Claims (5)
1. a construction method for diaphragm wall, is characterized in that, comprises the steps:
(1) construction of guide wall, comprise smooth location, measurement and positioning, excavation and process spoir, assembling reinforcement, formwork supporting plate, concreting, form removal and stull be set and lead backfill outside wall, lead after wall form removal, along leading wall longitudinally every the meter She bis-little supports in road, lead wall by two and support;
(2) fabrication of reinforcing cage, reinforcing cage should be made according to the division of diaphragm wall body arrangement of reinforcement and unit groove section, the reinforcing cage of unit groove section should be assembled into an entirety, while making reinforcing cage, to pre-determine the position of concreting conduit, because this part wants up/down perforation, need to set up stirrup around and dowel is reinforced, and transverse reinforcement is placed on to outside, longitudinal reinforcement is placed on inner side;
(3) mud is made, and adopts bentonite slurry, and in mud, adds dispersing agent, tackifier, heavy weight additive and leak preventive;
(4) grooving, comprises grooving, the clear end and brush wall, in the working procedure of grooving, ensures that the height of mud liquid level is higher than the height of groundwater table, and is not less than and leads following 50 centimetres of wall;
(5) reinforcement cage hoisting and descending reinforcing cage, first reinforcing cage level is lifted by crane, then by the coordinated manipulation of main frame and auxiliary hoist, make reinforcing cage hang straight rear aligned notches, while inserting reinforcing cage, necessary alignment slot section center, suspension centre center, slowly vertically fall in groove, after in reinforcing cage insertion groove, should check whether its top height meets designing requirement, then establish crotch with cross-arm or on main muscle and be shelved on and lead on wall;
(6) underwater concreting, in whole casting process, tremie is answered 2～4M in Transducers Embedded in Concrete, the minimum depth is greater than 1.5M, the maximum insertion depth of conduit is no more than 9M, will keep the balanced rising of groove inner concrete face while building, and speed of perfusion is generally 30～35M
3/ H;
(7) wall section joint processing, joint adopts locking notch pipe technique,, before perfusion groove section concrete, at the pre-inserted diameter in the end of the groove section steel pipe equal with groove width, after concrete initial set, steel pipe is extracted slowly, makes end form half blind mortise shape and connects shape.
2. the construction method of diaphragm wall according to claim 1, is characterized in that, while whitewashing a wall, need to brush 20-30 time in described step (four), brushes while thering is no mud and stops to iron, and the old and new's concrete of guaranteeing joint face is in conjunction with closely.
3. the construction method of diaphragm wall according to claim 1, is characterized in that, when concrete starts to build in described step (six), first in conduit, places water proof ball so that concrete can be by mud in pipe from the discharge of the pipe end while building.
4. the construction method of diaphragm wall according to claim 1, is characterized in that, in described step (six), the spacing of tremie is less than or equal to 3m.
5. the construction method of diaphragm wall according to claim 1, is characterized in that, the dispersing agent in described step (three) is bases, lignin sulfonate, compound phosphoric acid salt and humic acids, and tackifier are carboxymethyl cellulose.
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| CN201310154503.XA CN104120712A (en) | 2013-04-28 | 2013-04-28 | Construction method for underground diaphragm wall |
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| CN201310154503.XA CN104120712A (en) | 2013-04-28 | 2013-04-28 | Construction method for underground diaphragm wall |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929135A (en) * | 2015-06-24 | 2015-09-23 | 江苏省建筑科学研究院有限公司 | Deep foundation pit underground diaphragm wall enclosure structure and chemical churning pile water stop construction method thereof |
| CN105297742A (en) * | 2015-10-22 | 2016-02-03 | 北京城建集团有限责任公司 | Structure and method of water stopping support of underground space |
| CN106759265A (en) * | 2016-11-30 | 2017-05-31 | 上海市机械施工集团有限公司 | A kind of diaphram wall of fill concrete, its steel design and its construction method |
| CN107059839A (en) * | 2017-05-02 | 2017-08-18 | 江苏东合南岩土科技股份有限公司 | A kind of construction method of armored concrete waveform sheet pile underground structure |
| CN109137885A (en) * | 2018-10-16 | 2019-01-04 | 中铁二十二局集团轨道工程有限公司 | A kind of construction method of underground continuous wall |
| CN110258526A (en) * | 2019-05-28 | 2019-09-20 | 广州穗岩土木科技股份有限公司 | The method of prefabricated diaphram wall and construct outer wall of basement and floor |
| CN110387874A (en) * | 2019-07-30 | 2019-10-29 | 杭州江润科技有限公司 | Diaphram wall and construction method |
| CN111576392A (en) * | 2020-04-15 | 2020-08-25 | 中冶华亚建设集团有限公司 | Underground continuous wall and construction method thereof |
| CN115045268A (en) * | 2022-07-08 | 2022-09-13 | 上海隧道工程有限公司 | Construction method of ultra-deep and ultra-thick underground continuous wall |
| WO2022227725A1 (en) * | 2021-04-30 | 2022-11-03 | 北京三一智造科技有限公司 | Trench forming construction method |
| US11524878B2 (en) * | 2018-01-22 | 2022-12-13 | Wuyi University | First-order dynamic sliding mode variable structure-based bridge crane anti-swing method |
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2013
- 2013-04-28 CN CN201310154503.XA patent/CN104120712A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929135A (en) * | 2015-06-24 | 2015-09-23 | 江苏省建筑科学研究院有限公司 | Deep foundation pit underground diaphragm wall enclosure structure and chemical churning pile water stop construction method thereof |
| CN105297742A (en) * | 2015-10-22 | 2016-02-03 | 北京城建集团有限责任公司 | Structure and method of water stopping support of underground space |
| CN106759265A (en) * | 2016-11-30 | 2017-05-31 | 上海市机械施工集团有限公司 | A kind of diaphram wall of fill concrete, its steel design and its construction method |
| CN107059839A (en) * | 2017-05-02 | 2017-08-18 | 江苏东合南岩土科技股份有限公司 | A kind of construction method of armored concrete waveform sheet pile underground structure |
| CN107059839B (en) * | 2017-05-02 | 2019-01-04 | 江苏东合南岩土科技股份有限公司 | A kind of construction method of armored concrete waveform sheet pile underground structure |
| US11524878B2 (en) * | 2018-01-22 | 2022-12-13 | Wuyi University | First-order dynamic sliding mode variable structure-based bridge crane anti-swing method |
| CN109137885A (en) * | 2018-10-16 | 2019-01-04 | 中铁二十二局集团轨道工程有限公司 | A kind of construction method of underground continuous wall |
| CN110258526A (en) * | 2019-05-28 | 2019-09-20 | 广州穗岩土木科技股份有限公司 | The method of prefabricated diaphram wall and construct outer wall of basement and floor |
| CN110387874A (en) * | 2019-07-30 | 2019-10-29 | 杭州江润科技有限公司 | Diaphram wall and construction method |
| CN111576392A (en) * | 2020-04-15 | 2020-08-25 | 中冶华亚建设集团有限公司 | Underground continuous wall and construction method thereof |
| WO2022227725A1 (en) * | 2021-04-30 | 2022-11-03 | 北京三一智造科技有限公司 | Trench forming construction method |
| CN115045268A (en) * | 2022-07-08 | 2022-09-13 | 上海隧道工程有限公司 | Construction method of ultra-deep and ultra-thick underground continuous wall |
| CN115045268B (en) * | 2022-07-08 | 2023-09-05 | 上海隧道工程有限公司 | Construction method of ultra-deep and ultra-thick underground diaphragm wall |
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Application publication date: 20141029 |