CN102912797A - Foundation pit supporting method with precipitation function - Google Patents
Foundation pit supporting method with precipitation function Download PDFInfo
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- CN102912797A CN102912797A CN2012104008770A CN201210400877A CN102912797A CN 102912797 A CN102912797 A CN 102912797A CN 2012104008770 A CN2012104008770 A CN 2012104008770A CN 201210400877 A CN201210400877 A CN 201210400877A CN 102912797 A CN102912797 A CN 102912797A
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Abstract
The invention discloses a foundation pit supporting method with a precipitation function; and the method comprises the following steps of: first, determining the position of each steel pipe pile on the surrounding of a foundation pit by using a theodolite according to a construction drawing; marking the position of each steel pipe pile by using a wood pile; drilling water drainage holes on one side surfaces of hollow steel pipes; and then putting the hollow steel pipes on steel pipe pile clamping rings; placing reinforced concrete conical pressing heads below the clamping rings; pressing the hollow steel pipes, the steel pipe pile clamping rings and the reinforced concrete conical pressing heads into a soil layer to a certain depth by using a large-tonnage static pressure pile machine; putting submersible pumps into the steel pipes; excavating the foundation pit layer by layer; inserting water stopping steel plates in steel pipe lateral slide grooves of the side walls of the two adjacent hollow steel pipes when each layer is excavated; downwardly pressing the water stopping steel plates into a soil body; and repeating the steps in circulation until a designed depth is excavated. According to the invention, the construction cost can be reduced and materials can be recycled; moreover, the foundation pit supporting method with the precipitation function, disclosed by the invention, is integrated with a water drainage function.
Description
Technical field
The present invention relates to the supporting method in a kind of structure foundation construction, especially relate to a kind of foundation pit supporting method that contains the precipitation function.
Background technology
Any building, the excavation and support of its foundation ditch all is inevitably to build operation, the input of base pit engineering is very large usually, millions of units at least, at most several ten million.At present especially the supporting of deep-foundation pit engineering and precipitation design respectively and construct base pit engineering, supporting and protection structure mainly contains bored pile, steel sheet pile, the structure such as diaphragm wall, piled anchor, the construction costs of these supporting and protection structure is very high, and can not recycle, caused huge waste, foundation pit dewatering adopts around foundation ditch or inner special dewatering well and the water-stop curtain of foundation ditch realized, water-stop curtain is generally three axle soil-cements or flyash agitation pile (wall), the construction space of foundation ditch inside is diminished, and greatly improved construction costs.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency of the prior art, a kind of construction costs that reduces is provided, and its material of recoverable, and integrate a kind of foundation pit supporting method that contains the precipitation function of drain function.
The objective of the invention is to be achieved by following technical proposals: a kind of foundation pit supporting method that contains the precipitation function comprises the steps:
(1) according to working drawing, determines the position of each steel pipe pile of foundation ditch periphery with transit, and make marks with wooden stake;
(2) with a side face drilling drain hole of hollow steel pipe, then hollow steel pipe is placed on the steel pipe pile collar the following placement steel concrete conical indenter of described collar;
(3) use the large-tonnage Static pressure pile driver, with the steel concrete conical indenter that arranges under the hollow steel pipe of above-mentioned steps (2) preparation and steel pipe pile collar and the collar, be pressed into the soil layer of step (1) the steel pipe pile position that mark is good, to certain depth;
(4) submersible pump is put into the hollow steel pipe that above-mentioned steps (3) has been pressed into soil layer, and with the upper surface of steel pipe pile cap at hollow steel pipe, the preparation of drawing water;
(5) along the foundation ditch position that hollow steel pipe surrounds, the stage excavation foundation ditch whenever digs one deck, steel plate for sealing water is inserted in the steel pipe side direction chute of two adjacent hollow steel pipe sidewalls, presses downward in the soil body, when treating that underground water oozes out from the drain hole of a side of hollow steel pipe, start the submersible pump draining
(6) circulation above-mentioned steps (5) step is until dig projected depth.
The thickness of steel plate for sealing water is 15mm in the described step (5).
The diameter of drain hole is 8-12mm in the described step (2).
The tapering of steel concrete conical indenter is 45 ° in the described step (2).
The pipe thickness of described step (2) hollow core steel pipe is 20mm.
The invention has the beneficial effects as follows: mainly bear the foundation ditch lateral pressure (comprises soil pressure to the hollow steel pile tube on the one hand, hydrostatic pressure, flowing pressure, the ground preloading), guarantee the security and stability into the hole, can be used as again on the other hand the foundation pit dewatering well, the underground water of foundation ditch inside can be by the draining aperture of hollow steel pile tube inboard, seepage flow is in the hollow steel pile tube, as being put into hollow steel pipe, QSP40-16-3 type submersible pump draws water, can effectively reduce the groundwater table of foundation ditch, steel plate for sealing water (15mm is thick) is inserted in the steel pipe side direction chute of two adjacent reducing hollow steel pipe sidewalls, can stop the outer water of foundation ditch to enter to be seeped into foundation ditch inside, affect the inner normal construction of foundation ditch, guarantee that the foundation ditch interior construction has the environment of a drying, hollow steel pipe is placed on 45 ° of conical indenter steel pipe piles of steel concrete collar, because 45 ° of conical indenter bottoms of steel concrete are tapered, so being pressed into the resistance that is subject in the foundation pit side-wall soil body process at hollow steel pipe will reduce, above-mentioned material is recyclable after using, reuse, therefore can reduce the waste of material, reduce the cost of engineering.
Description of drawings
Fig. 1 is foundation pit supporting construction schematic diagram of the present invention.
Fig. 2 is Fig. 1 hollow core steel pipe pile cross-sectional structure schematic diagram.
Fig. 3 is that hollow steel pile tube of the present invention arranges the plane structure schematic diagram.
Fig. 4 is that hollow steel pile tube of the present invention is pressed into the soil mass of foundation pit schematic diagram.
The specific embodiment
Below by embodiment, the present invention is further illustrated:
A kind of foundation pit supporting method that contains the precipitation function the steps include: at first according to working drawing, determines the position (see figure 3) of each steel pipe pile 1 of foundation ditch periphery with transit, and makes marks with wooden; Then with a side face drilling drain hole 3 of hollow steel pipe 1, the diameter of drain hole 3 of the present invention is 8-12mm, and the pipe thickness of hollow steel pipe is 20mm; Then hollow steel pipe is placed on the steel pipe pile collar 5, the following steel concrete conical indenter 6(that places again of collar 5 sees Fig. 1), the tapering of steel concrete conical indenter of the present invention is 45 °; Then use the large-tonnage Static pressure pile driver, with the steel concrete conical indenter that arranges under the hollow steel pipe that prepared and steel pipe pile collar and the collar, together be pressed into the soil layer of the steel pipe pile position that mark is good, the degree of depth that is pressed into is the designed degree of depth (see figure 4) of engineering; Then submersible pump is put into the hollow steel pipe that is pressed into soil layer, and with the upper surface of steel pipe pile cap 4 at hollow steel pipe, carried out the preparation of drawing water; Then along foundation ditch position that hollow steel pipe surrounds, beginning stage excavation foundation ditch whenever digs one deck, steel plate for sealing water 7 is inserted in the steel pipe side direction chute 2 interior (see figure 2)s of two adjacent hollow steel pipe sidewalls, and press downward in the soil body, the thickness of steel plate for sealing water of the present invention is 15mm; When treating that underground water oozes out from the drain hole of a side of hollow steel pipe, start the submersible pump draining, step of circulation excavation like this is until dig projected depth.
Claims (5)
1. a foundation pit supporting method that contains the precipitation function is characterized in that, comprises the steps:
(1) according to working drawing, determines the position of each steel pipe pile of foundation ditch periphery with transit, and make marks with wooden stake;
(2) with a side face drilling drain hole of hollow steel pipe, then hollow steel pipe is placed on the steel pipe pile collar the following placement steel concrete conical indenter of described collar;
(3) use the large-tonnage Static pressure pile driver, with the steel concrete conical indenter that arranges under the hollow steel pipe of above-mentioned steps (2) preparation and steel pipe pile collar and the collar, be pressed into the soil layer of step (1) the steel pipe pile position that mark is good, to certain depth;
(4) submersible pump is put into the hollow steel pipe that above-mentioned steps (3) has been pressed into soil layer, and with the upper surface of steel pipe pile cap at hollow steel pipe, the preparation of drawing water;
(5) along the foundation ditch position that hollow steel pipe surrounds, the stage excavation foundation ditch whenever digs one deck, steel plate for sealing water is inserted in the steel pipe side direction chute of two adjacent hollow steel pipe sidewalls, presses downward in the soil body, when treating that underground water oozes out from the drain hole of a side of hollow steel pipe, start the submersible pump draining
(6) circulation above-mentioned steps (5) step is until dig projected depth.
2. according to a kind of foundation pit supporting method that contains the precipitation function claimed in claim 1, it is characterized in that, the thickness of steel plate for sealing water is 15mm in the described step (5).
3. a kind of foundation pit supporting method that contains the precipitation function according to claim 1 is characterized in that, the diameter of drain hole is 8-12mm in the described step (2).
4. a kind of foundation pit supporting method that contains the precipitation function according to claim 1 is characterized in that, the tapering of steel concrete conical indenter is 45 ° in the described step (2).
5. a kind of foundation pit supporting method that contains the precipitation function according to claim 1 is characterized in that, the pipe thickness of described step (2) hollow core steel pipe is 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104008770A CN102912797A (en) | 2012-10-19 | 2012-10-19 | Foundation pit supporting method with precipitation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104008770A CN102912797A (en) | 2012-10-19 | 2012-10-19 | Foundation pit supporting method with precipitation function |
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| CN102912797A true CN102912797A (en) | 2013-02-06 |
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| CN2012104008770A Pending CN102912797A (en) | 2012-10-19 | 2012-10-19 | Foundation pit supporting method with precipitation function |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410157A (en) * | 2013-08-28 | 2013-11-27 | 上海岩土工程勘察设计研究院有限公司 | Slope making type recyclable steel enclosure structure for soft soil foundation pit and application method thereof |
| CN103437371A (en) * | 2013-08-29 | 2013-12-11 | 湖南城市学院 | Construction method of water drainage uplift pile |
| CN103850260A (en) * | 2014-03-24 | 2014-06-11 | 北京城建勘测设计研究院有限责任公司 | Pile-well integration dewatering well |
| WO2015157853A1 (en) * | 2014-02-14 | 2015-10-22 | Groupe Mammut Inc. | Shoring system using at least one liquid-controlling slide rail |
| CN108005087A (en) * | 2018-01-18 | 2018-05-08 | 温州市华意建设有限公司 | A kind of foundation pit supporting construction |
| CN109235911A (en) * | 2018-09-04 | 2019-01-18 | 中国三冶集团有限公司 | A kind of water-saving depositing dust construction method of construction site |
| CN110106885A (en) * | 2018-02-01 | 2019-08-09 | 新世界发展有限公司 | A kind of foundation ditch excavation method |
| CN112538860A (en) * | 2020-12-09 | 2021-03-23 | 中建三局集团有限公司 | Construction method of high-water-level complex stratum bottom-seal-free concrete lock catch steel pipe pile cofferdam |
| CN112832253A (en) * | 2021-01-07 | 2021-05-25 | 青岛理工大学 | Treatment method for piping of steel sheet pile support foundation pit |
| CN113338299A (en) * | 2021-06-21 | 2021-09-03 | 中铁十二局集团有限公司 | Pile well composite foundation pit supporting construction method |
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| JPS63304816A (en) * | 1987-06-02 | 1988-12-13 | Okumura Constr Co Ltd | Construction of crushed stone continuous underground wall |
| JPH01226920A (en) * | 1988-03-07 | 1989-09-11 | Sumitomo Metal Ind Ltd | Earthquake-proof construction of river embankment |
| KR20070118828A (en) * | 2006-06-13 | 2007-12-18 | 이더테크놀로지(주) | Soil retaining apparatus for digging trench |
| WO2010068013A2 (en) * | 2008-12-08 | 2010-06-17 | 코오롱건설주식회사 | Temporaty soil retaining wall structure for water supply and drainage works in low depth |
| CN201588206U (en) * | 2009-11-12 | 2010-09-22 | 任再永 | Water discharge pile pipe |
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2012
- 2012-10-19 CN CN2012104008770A patent/CN102912797A/en active Pending
Patent Citations (6)
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| JPS63304816A (en) * | 1987-06-02 | 1988-12-13 | Okumura Constr Co Ltd | Construction of crushed stone continuous underground wall |
| JPH01226920A (en) * | 1988-03-07 | 1989-09-11 | Sumitomo Metal Ind Ltd | Earthquake-proof construction of river embankment |
| KR20070118828A (en) * | 2006-06-13 | 2007-12-18 | 이더테크놀로지(주) | Soil retaining apparatus for digging trench |
| WO2010068013A2 (en) * | 2008-12-08 | 2010-06-17 | 코오롱건설주식회사 | Temporaty soil retaining wall structure for water supply and drainage works in low depth |
| WO2010068013A3 (en) * | 2008-12-08 | 2010-10-21 | 코오롱건설주식회사 | Temporaty soil retaining wall structure for water supply and drainage works in low depth |
| CN201588206U (en) * | 2009-11-12 | 2010-09-22 | 任再永 | Water discharge pile pipe |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410157A (en) * | 2013-08-28 | 2013-11-27 | 上海岩土工程勘察设计研究院有限公司 | Slope making type recyclable steel enclosure structure for soft soil foundation pit and application method thereof |
| CN103437371B (en) * | 2013-08-29 | 2015-06-10 | 湖南城市学院 | Construction method of water drainage uplift pile |
| CN103437371A (en) * | 2013-08-29 | 2013-12-11 | 湖南城市学院 | Construction method of water drainage uplift pile |
| US9856620B2 (en) | 2014-02-14 | 2018-01-02 | Groupe Mammut Inc. | Shoring system using at least one liquid-controlling slide rail |
| WO2015157853A1 (en) * | 2014-02-14 | 2015-10-22 | Groupe Mammut Inc. | Shoring system using at least one liquid-controlling slide rail |
| CN103850260B (en) * | 2014-03-24 | 2015-10-28 | 北京城建勘测设计研究院有限责任公司 | A kind of stake well integration dewatering well |
| CN103850260A (en) * | 2014-03-24 | 2014-06-11 | 北京城建勘测设计研究院有限责任公司 | Pile-well integration dewatering well |
| CN108005087A (en) * | 2018-01-18 | 2018-05-08 | 温州市华意建设有限公司 | A kind of foundation pit supporting construction |
| CN110106885A (en) * | 2018-02-01 | 2019-08-09 | 新世界发展有限公司 | A kind of foundation ditch excavation method |
| CN109235911A (en) * | 2018-09-04 | 2019-01-18 | 中国三冶集团有限公司 | A kind of water-saving depositing dust construction method of construction site |
| CN112538860A (en) * | 2020-12-09 | 2021-03-23 | 中建三局集团有限公司 | Construction method of high-water-level complex stratum bottom-seal-free concrete lock catch steel pipe pile cofferdam |
| CN112832253A (en) * | 2021-01-07 | 2021-05-25 | 青岛理工大学 | Treatment method for piping of steel sheet pile support foundation pit |
| CN113338299A (en) * | 2021-06-21 | 2021-09-03 | 中铁十二局集团有限公司 | Pile well composite foundation pit supporting construction method |
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Application publication date: 20130206 |