CN105696550A - Three axes agitating pile construction method capable of assisting in grooving of reinforced underground diaphragm wall - Google Patents
Three axes agitating pile construction method capable of assisting in grooving of reinforced underground diaphragm wall Download PDFInfo
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- CN105696550A CN105696550A CN201410695391.3A CN201410695391A CN105696550A CN 105696550 A CN105696550 A CN 105696550A CN 201410695391 A CN201410695391 A CN 201410695391A CN 105696550 A CN105696550 A CN 105696550A
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Abstract
The invention discloses a three axes agitating pile construction method capable of assisting in grooving of a reinforced underground diaphragm wall. The construction method is characterized by comprising the following technological steps that a, the range of a reinforced target of three axes agitating piles is determined; b, the reinforcing depth of the three axes agitating piles is determined; c, the distance between an inner reinforcing pile body and an outer reinforcing pile body of the three axes agitating piles is determined; d, guide wall construction is conducted according to a construction technique of an ordinary underground diaphragm wall; e, the slurry proportion is adjusted properly; f, main quality control points of reinforcement of the three axes agitating piles are determined; g, the stability of a pile machine is checked; h, the perpendicularity control over a pile frame of the three axes agitating piles is strengthened; i, the water cement ratio, the stirring time and the slurry quality are controlled strictly, and the slurry injection pressure and the slurry injection speed during slurry injection are controlled; and j, the drilling speed and lifting speed of a drill pipe are controlled strictly. The construction method has the advantages that the technique is mature, construction is easy and convenient, the project quality is safe and reliable, the horizontal displacement and settlement amount of important structures are quite small, the requirements for economic benefits are met, and smooth implementation of a project is guaranteed.
Description
Technical field
The present invention relates to the construction method of a kind of underground infrastructure, specifically, be the three axes agitating pile construction method of a kind of additional reinforcement continuous wall trench underground。
Background technology
Domestic deep basal pit structural support form is varied。In recent years, expansion along with the development produced and urban construction scale, deep foundation engineering gets more and more, execution conditions are also more and more restricted, subterranean excavation is more and more deeper, and known continuous wall trench underground form of construction work can cause the horizontal displacement of underground continuous wall top, residential building or the horizontal displacement of important pipeline, sedimentation, the facility such as building that harm closes on, road, pipeline, subway。
Therefore known continuous wall trench underground form of construction work also exists above-mentioned all inconvenience and problem。
Summary of the invention
The purpose of the present invention, is in that to propose a kind of three axes agitating pile construction method being applicable to industry and the additional reinforcement continuous wall trench underground of civil buildings diaphram wall support deep pit engineering。
It is another object of the present invention to propose the three axes agitating pile construction method of a kind of, foundation ditch poor suitable in soil property in foundation ditch additional reinforcement continuous wall trench underground of narrow field outward。
A further object of the present invention, is in that to propose a kind of to close on buildings or structures suitable in surrounding, adjoins residential block, the three axes agitating pile construction method of the additional reinforcement continuous wall trench underground of adjoining complexity and strategic road or underground utilities reinforcement protection。
For achieving the above object, the technical solution of the present invention is:
The three axes agitating pile construction method of a kind of additional reinforcement continuous wall trench underground, adopts ripe three axes agitating pile construction technology, it is characterised in that include techniques below measure in the both sides of diaphram wall:
A, three axes agitating pile protection reinforce the scope of object: from diaphram wall both sides length equal to 1/2 foundation depth；
B, three axes agitating pile reinforcement depth according to soil layer property and the pipeline depth of burying, generally need guiding through the unfavorable soil layer 1m in soil layer bottom, pipeline place, and be not less than the pipeline depth of burying of 1.8 times；According to foundation ditch soil layer property, need to carry out, by EFFECT OF CEMENT STABILIZED SOIL RETAINING WALL, the checking computations that antidumping is stable, slide is stable for complex building, strategic road or pipeline；
C, three axes agitating pile reinforce inside and outside trestle column equal to ground-connecting-wall width, diaphram wall of fitting after three axes agitating pile is body formed；
D, construction of guide wall are undertaken by usually descending construction of diaphragm wall technique；
When e, construction of diaphragm wall, when grooving operation is carried out for the diaphram wall of three axes agitating pile reinforcement system scope and the degree of depth, owing to outside has three axes agitating pile reinforcement system intensity to limit, suitably regulate mud balance；
F, three axes agitating pile reinforce major quality controlling point: to the location of three axes agitating pile, the walking of stake machine, the proportion of the degree of depth, perpendicularity, cement grout, pile perpendicularity carry out priority control；
Before g, three axes agitating pile spud in, checking stake machine stationarity, accomplish fixing rectifying, pile frame is vertical, and adopts measurement instrument or means, the levelness of complete pile-formation machine, pile frame the checking of perpendicularity；
H, strengthen the degree control of three axes agitating pile pile frame, every time must carry out checking of perpendicularity after mobile stake machine；
I, match ratio according to the cement grout determined, carry out the detection of measurer, strictly controls the ratio of mud, mixing time, serosity quality, controls grouting pressure and injection speed during slip casting；
J, the strict speed controlling to bore under drilling pipe, promote, if the stifled or disconnected slurry phenomenon of injected hole occurs, should termination of pumping in time, after fixing a breakdown, then take effective measures and carry out multiple whitewashing, be strictly on guard against broken pile, sky stake。
The three axes agitating pile construction method of the additional reinforcement continuous wall trench underground of the present invention can also be further achieved by the following technical measures。
Aforesaid method, the degree control of wherein said three axes agitating pile pile frame is 0.2%。
After adopting technique scheme, the three axes agitating pile construction method of the additional reinforcement continuous wall trench underground of the present invention has the advantage that
1, three axes agitating pile construction technology is ripe, easy construction；
2, construction quality is safe and reliable, the horizontal displacement of important feature and settling amount very little；
3, economic benefit requirement is met, it is ensured that project is implemented smoothly。
Accompanying drawing explanation
Fig. 1 is the structural representation of the three axes agitating pile of the additional reinforcement continuous wall trench underground of the embodiment of the present invention。
In figure: 1 diaphram wall, 2 meet soil face, and 3 three axes agitating pile continuous wall trench are reinforced, 4 excavation faces, the stake overlap between 5 liang of mixing piles。
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is illustrated further。
Embodiment 1
Fig. 1 is the structure of the three axes agitating pile of the additional reinforcement continuous wall trench underground of the embodiment of the present invention, within close 8 meters of house and the position of pipeline reinforces schematic diagram, wherein the pile radius of three axes agitating pile is 600mm, and the stake overlap between two mixing piles is 250mm。
The three axes agitating pile construction method of the additional reinforcement continuous wall trench underground of the present invention, adopts ripe three axes agitating pile construction technology, it is characterised in that include techniques below measure in the both sides of diaphram wall:
A, three axes agitating pile reinforcing scope all reinforce by the ground-connecting-wall both sides within buildings or structures, residential building, strategic road or complicated important pipeline distance H/2 rice (H is foundation depth)。
B, three axes agitating pile reinforcement depth according to soil layer property and the pipeline depth of burying, generally need guiding through soil layer bottom, pipeline place unfavorable soil layer (such as mud) 1m, and to be not less than 1.8h(h be the pipeline depth of burying)；According to foundation ditch soil layer property, need to carry out, by EFFECT OF CEMENT STABILIZED SOIL RETAINING WALL, the checking computations that antidumping is stable, slide is stable for complicated buildings or structures (as without pile foundation, shallow foundation structures), strategic road or pipeline。
Inside and outside c, three axes agitating pile reinforcement system, trestle column should just be equal to ground-connecting-wall width; should fit after three axes agitating pile is body formed ground-connecting-wall; so namely the stability in the large of reinforcement system it is beneficial to; to closing on pipeline and buildings or structures serve protective effect; connect again the construction of walled protection structure over the ground and serve certain guide effect, be the longitudinal extension that ground-connecting-wall is led wall。
D, construction of guide wall can be constructed by continuous construction technology under usually, underground continuous wall body position is positioned during because of three axes agitating pile reinforcement system construction location, construction of guide wall is constructed according to reinforcement system location, lateral support is carried out with reinforcement system, lead wall Forming Quality and generally can be better than general guide wall of underground continuous wall, and lead metope layer and side is less susceptible to produce sedimentation or outside lateral bucking subsides。
When e, construction of diaphragm wall, when carrying out grooving operation for the diaphram wall of three axes agitating pile reinforcement system scope and the degree of depth, owing to outside has three axes agitating pile reinforcement system intensity to limit, mud balance can suitably regulate。
F, reinforcement system major quality controlling point: the reply location of three axes agitating pile, the walking of stake machine, the proportion of the degree of depth, perpendicularity, cement grout, pile perpendicularity carry out priority control。
G, spud in before, a machine stationarity should be checked, accomplish fixing rectifying, pile frame is vertical, and adopts measurement instrument or means, the levelness of complete pile-formation machine, pile frame the checking of perpendicularity, confirm errorless after, pile operation can be stirred。
H, strengthen the degree control of pile frame, every time must carry out checking of perpendicularity after mobile stake machine。Perpendicularity should control at 0.2%(with perpendicularity≤0.5% after ensureing construction)。
I, match ratio according to the cement grout determined, carry out the feasible means of detection of measurer, strictly controls the ratio of mud, mixing time, serosity quality, controls grouting pressure and injection speed during slip casting。
J, the strict speed controlling to bore under drilling pipe, promote, if the stifled or disconnected slurry phenomenon of injected hole occurs, should termination of pumping in time, after fixing a breakdown, then take effective measures and carry out multiple whitewashing, be strictly on guard against broken pile, sky stake。
The present invention has substantive distinguishing features and significant technological progress, the three axes agitating pile construction method of the additional reinforcement continuous wall trench underground of the present invention adopts that three axes agitating pile construction technology is ripe, easy construction, construction quality is safe and reliable, the horizontal displacement of important feature and settling amount very little。
The three axes agitating pile construction method of the additional reinforcement continuous wall trench underground of the present invention is used in Foochow track traffic command centre engineering, this engineering is three layers basement, periphery closes on residential building only 4m recently, foundation ditch south be close to town road, west for building metro project, there is the complicated municipal pipelines such as cable coal gas in periphery near point。Adopt the three axes agitating pile construction method of the additional reinforcement continuous wall trench underground of the present invention, consolidation effect is notable, be no matter close on residential building or the horizontal displacement of important pipeline, settling amount is satisfied by requirement, obtains nearby residents, supervisor and construction unit's abundant affirmation。
Above example is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, it is also possible to make various conversion or change。Therefore, all equivalent technical schemes also should belong to scope of the invention, should be limited by each claim。
Claims (2)
1. a three axes agitating pile construction method for additional reinforcement continuous wall trench underground, adopts ripe three axes agitating pile construction technology, it is characterised in that include techniques below measure in the both sides of diaphram wall:
A, three axes agitating pile protection reinforce the scope of object: from diaphram wall both sides length equal to 1/2 foundation depth；
B, three axes agitating pile reinforcement depth according to soil layer property and the pipeline depth of burying, generally need guiding through the unfavorable soil layer 1m in soil layer bottom, pipeline place, and be not less than the pipeline depth of burying of 1.8 times；According to foundation ditch soil layer property, need to carry out, by EFFECT OF CEMENT STABILIZED SOIL RETAINING WALL, the checking computations that antidumping is stable, slide is stable for complex building, strategic road or pipeline；
C, three axes agitating pile reinforce inside and outside trestle column equal to ground-connecting-wall width, diaphram wall of fitting after three axes agitating pile is body formed；
D, construction of guide wall are undertaken by usually descending construction of diaphragm wall technique；
When e, construction of diaphragm wall, when grooving operation is carried out for the diaphram wall of three axes agitating pile reinforcement system scope and the degree of depth, owing to outside has three axes agitating pile reinforcement system intensity to limit, suitably regulate mud balance；
F, three axes agitating pile reinforce major quality controlling point: to the location of three axes agitating pile, the walking of stake machine, the proportion of the degree of depth, perpendicularity, cement grout, pile perpendicularity carry out priority control；
Before g, three axes agitating pile spud in, checking stake machine stationarity, accomplish fixing rectifying, pile frame is vertical, and adopts measurement instrument or means, the levelness of complete pile-formation machine, pile frame the checking of perpendicularity；
H, strengthen the degree control of three axes agitating pile pile frame, every time must carry out checking of perpendicularity after mobile stake machine；
I, match ratio according to the cement grout determined, carry out the detection of measurer, strictly controls the ratio of mud, mixing time, serosity quality, controls grouting pressure and injection speed during slip casting；
J, the strict speed controlling to bore under drilling pipe, promote, if the stifled or disconnected slurry phenomenon of injected hole occurs, should termination of pumping in time, after fixing a breakdown, then take effective measures and carry out multiple whitewashing, be strictly on guard against broken pile, sky stake。
2. the three axes agitating pile construction method of additional reinforcement continuous wall trench underground as claimed in claim 1, it is characterised in that the degree control of described three axes agitating pile pile frame is 0.2%。
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105926668A (en) * | 2016-06-23 | 2016-09-07 | 程华清 | Construction method of partition wall between ultradeep foundation pit and place near dangerous building |
| CN106381864A (en) * | 2016-08-31 | 2017-02-08 | 中天建设集团有限公司天津分公司 | Cell wall strengthening method for underground diaphragm wall |
| CN108643826A (en) * | 2018-04-20 | 2018-10-12 | 孙杰 | A kind of double end stirring development machine |
| CN111455977A (en) * | 2020-03-06 | 2020-07-28 | 珠海十字门中央商务区建设控股有限公司 | Underground continuous wall construction method |
| CN111560964A (en) * | 2020-05-29 | 2020-08-21 | 北京市地质工程公司 | Construction method of rear anti-seepage system of foundation pit |
| CN113026768A (en) * | 2021-03-26 | 2021-06-25 | 中国建筑一局(集团)有限公司 | Grooving reinforcing structure for ultra-deep underground diaphragm wall in coastal push-filling area and construction method thereof |
| CN114960751A (en) * | 2022-07-29 | 2022-08-30 | 中国铁路设计集团有限公司 | Method for attaching open excavation construction of subway station and then covering excavation and top-down construction of subway station |
| CN115595983A (en) * | 2022-11-11 | 2023-01-13 | 中建四局土木工程有限公司（Cn） | Construction improvement method for anti-collapse grooving of water-rich soft geology |
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| CN101761069A (en) * | 2008-12-24 | 2010-06-30 | 上海市申江两岸开发建设投资(集团)有限公司 | Construction method of three-in-one underground diaphragm wall |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105926668A (en) * | 2016-06-23 | 2016-09-07 | 程华清 | Construction method of partition wall between ultradeep foundation pit and place near dangerous building |
| CN106381864A (en) * | 2016-08-31 | 2017-02-08 | 中天建设集团有限公司天津分公司 | Cell wall strengthening method for underground diaphragm wall |
| CN108643826A (en) * | 2018-04-20 | 2018-10-12 | 孙杰 | A kind of double end stirring development machine |
| CN111455977A (en) * | 2020-03-06 | 2020-07-28 | 珠海十字门中央商务区建设控股有限公司 | Underground continuous wall construction method |
| CN111560964A (en) * | 2020-05-29 | 2020-08-21 | 北京市地质工程公司 | Construction method of rear anti-seepage system of foundation pit |
| CN111560964B (en) * | 2020-05-29 | 2020-12-22 | 北京市地质工程公司 | Construction method of rear anti-seepage system of foundation pit |
| CN113026768A (en) * | 2021-03-26 | 2021-06-25 | 中国建筑一局(集团)有限公司 | Grooving reinforcing structure for ultra-deep underground diaphragm wall in coastal push-filling area and construction method thereof |
| CN114960751A (en) * | 2022-07-29 | 2022-08-30 | 中国铁路设计集团有限公司 | Method for attaching open excavation construction of subway station and then covering excavation and top-down construction of subway station |
| CN114960751B (en) * | 2022-07-29 | 2022-12-09 | 中国铁路设计集团有限公司 | Method for attaching open excavation construction of subway station and then covering excavation and top-down construction of subway station |
| CN115595983A (en) * | 2022-11-11 | 2023-01-13 | 中建四局土木工程有限公司（Cn） | Construction improvement method for anti-collapse grooving of water-rich soft geology |
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| CN105696550B (en) | 2017-08-25 |
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