CN103628487B - Circular deep foundation ditch retaining wall reversed construction method - Google Patents
Circular deep foundation ditch retaining wall reversed construction method Download PDFInfo
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- CN103628487B CN103628487B CN201310626849.5A CN201310626849A CN103628487B CN 103628487 B CN103628487 B CN 103628487B CN 201310626849 A CN201310626849 A CN 201310626849A CN 103628487 B CN103628487 B CN 103628487B
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Abstract
(1), whole circular deep foundation ditch is according to construction location unwrapping wire the present invention relates to a kind of circular deep foundation ditch retaining wall reversed construction method, the step of its construction method is as follows:; (2), dig ground floor soil, the retaining wall Guan Liang that starts to construct, more down dig second layer soil, and then the construct retaining wall of concrete support, earth excavation adopts backhoe layering to cut the earth, and the vertical transport earthwork and allocation and transportation reinforcing bar, use crane to carry out, under each, dig 1000mm, treat, as after equating at the bottom of the foundation ditch of breast wall concrete bed die, to carry out panelling construction, segmentation so repeatedly, until circular deep foundation ditch bottom is arrived in construction, circular deep foundation ditch retaining wall is made complete. Technique of the present invention is simple, reduce costs, the construction period is short, safe, effectively solves existing complex geological condition, construction area is narrow and small and Nearby Structure is nearer problem.
Description
Technical field
The invention belongs to deep basal pit panelling construction field, especially a kind of circular deep foundation ditch retaining wall is contrary to be doneConstruction method.
Background technology
Pattern foundation pit supporting structure has multiple, and diaphram wall, campshed, steel sheet pile, concrete guard wall add soil nailingWall, layering inner support be contrary to be made technology, campshed and adds that retaining wall is contrary does technology and minor diameter manual pore-forming stakeSupporting etc. From above-mentioned various support patterns, can not meet complex geological condition and construction areaNarrow and small, Nearby Structure carries out the requirement of construction supporting.
Summary of the invention
The object of the invention is to overcome prior art deficiency, provide a kind of circular deep foundation ditch retaining wall contraryMake construction method, this construction method technique is simple, reduce costs, the construction period is short, safe,The existing complex geological condition of effective solution, the problem that construction area is narrow and small and Nearby Structure is nearer.
The present invention solves its technical problem and is achieved through the following technical solutions:
A kind of circular deep foundation ditch retaining wall reversed construction method, the step of its construction method is as follows:
(1), whole circular deep foundation ditch is according to construction location unwrapping wire;
, dig ground floor soil, the retaining wall Guan Liang that starts to construct, more down dig second layer soil, and thenThe retaining wall of construction concrete support, earth excavation adopts backhoe layering to cut the earth, the vertical transport earthwork andAllocation and transportation reinforcing bar, uses crane to carry out, and digs 1000mm under each, treats as breast wall concrete bed dieAt the bottom of foundation ditch, after equating, carry out panelling construction, segmentation so repeatedly, is arrived circular dark base until constructBottom, hole, circular deep foundation ditch retaining wall is made complete.
And the Section Design of described retaining wall Guan Liang is 800 × 600mm, the protecting of concrete supportWall, every section high 900mm or 1000mm, thick 350mm.
And, between described every section of retaining wall and the soil body, be connected with Φ 16mm spiral, insert soilMiddle 1.8m, and the overhanging 200mm of centripetal direction, circumferential distance is 1000mm.
And, the described inner circumferential reinforcement Φ of retaining wall 14mm, point inside and outside two-layer setting, verticalSpacing is 200mm, the inside and outside two-layer stud Φ 14mm of retaining wall, level interval 600mm, first paragraphBetween retaining wall and ring beam and between every section of retaining wall, use the anchor connection of vertical applied force muscle, anchor into 250mm.
Advantage of the present invention and beneficial effect are:
The present invention is different from open caisson and diaphram wall, is traditional minor diameter manual pore-forming perfusionThe development of chimney retaining wall mode is played in stake, and amplification and exploitation are to large-diameter deep pattern foundation pit supporting structure. Fully profitBy the stable feature of circular configuration, design concrete wall thickness and arrangement of reinforcement, meet the safety of foundation pit constructionStable. Do not establish inner support, section construction concrete guard wall, retaining wall is contrary to be done. In hole, a cubic metre of earth layering is openedDig. Ensure the safety and stability of foundation ditch. Be foundation pit construction technology another new support pattern andConstruction technology.
Brief description of the drawings
Fig. 1 is supporting schematic diagram of the present invention.
Detailed description of the invention
Below by specific embodiment, the invention will be further described, and following examples are just describedProperty, not determinate, can not limit protection scope of the present invention with this.
A kind of circular deep foundation ditch retaining wall reversed construction method, the step of its construction method is as follows:
(1), whole circular deep foundation ditch is according to construction location unwrapping wire;
, dig ground floor soil, the retaining wall that starts to construct hat beam 1, more down dig second layer soil, and thenThe retaining wall 2 of construction concrete support, earth excavation adopts backhoe layering to cut the earth, the vertical transport earthwork andAllocation and transportation reinforcing bar, uses crane to carry out, and digs 1000mm under each, treats as breast wall concrete bed dieAt the bottom of foundation ditch, after equating, carry out panelling construction, segmentation so repeatedly, is arrived circular dark base until constructBottom, hole, circular deep foundation ditch retaining wall is made complete. The Section Design of retaining wall Guan Liang is 800 ×600mm, the retaining wall of concrete support, every section high 900mm or 1000mm, thick 350mm. Every section is protectedBetween wall and the soil body, be connected with Φ 16mm spiral, insert 1.8m in soil, and centripetal direction be overhanging200mm, circumferential distance is 1000mm. The inner circumferential reinforcement Φ of retaining wall 14mm, divides inside and outside two-layerArrange, vertical spacing is 200mm, the inside and outside two-layer stud Φ 14mm of retaining wall, and level interval 600mm,Between first paragraph retaining wall and ring beam and between every section of retaining wall, use the anchor connection of vertical applied force muscle, anchor into250mm。
The present invention has ensured the safety of on-the-spot normal and surrounding environment of closing on base for post and equipment. WithAnd meet the minimum of construction Deformation. Construction period: the panelling construction duration is short, has saved the time.Construction cost: the example of retaining wall reverse construction retaining wall is used in Whirlwind tank, this Whirlwind tank is cylindrical shapeUnderground structure, external diameter 14.6m, wall thickness 0.8m, cylinder top mark high ± 0.00m; Pond base plate foundation absolute altitudeThe about 260m of concrete for-18.40m3, 23.32 ten thousand yuan of operating expenses; If adopt campshed supporting, cost approximately2.0 ten thousand × 42=840,000 yuan; If employing bolt-spary supports, approximately 350,000 yuan of estimated costs; If adoptHeavy excavation, approximately 550,000 yuan of excavation costs, approximately 220,000 yuan of backfill costs, add up to 770,000 yuan. CircularCost-saving 120,000～600,000 yuan of pattern foundation pit supporting structure reverse construction.
Claims (4)
1. a circular deep foundation ditch retaining wall reversed construction method, is characterized in that: the step of this construction method is as follows:
(1), whole circular deep foundation ditch is according to construction location unwrapping wire;
(2), dig ground floor soil, the retaining wall Guan Liang that starts to construct, more down dig second layer soil, and then the construct retaining wall of concrete support, earth excavation adopts backhoe layering to cut the earth, and the vertical transport earthwork and allocation and transportation reinforcing bar, use crane to carry out, under each, dig 1000mm, treat, as after equating at the bottom of the foundation ditch of breast wall concrete bed die, to carry out panelling construction, segmentation so repeatedly, until circular deep foundation ditch bottom is arrived in construction, circular deep foundation ditch retaining wall is made complete.
2. circular deep foundation ditch retaining wall reversed construction method according to claim 1, is characterized in that: the Section Design of described retaining wall Guan Liang is 800 × 600mm, the retaining wall of concrete support, every section high 900mm or 1000mm, thick 350mm.
3. circular deep foundation ditch retaining wall reversed construction method according to claim 1, is characterized in that: between described retaining wall and the soil body, be connected with Φ 16mm spiral, insert 1.8m in soil, and to the overhanging 200mm of centripetal direction, circumferential distance be 1000mm.
4. circular deep foundation ditch retaining wall reversed construction method according to claim 1, it is characterized in that: the described inner circumferential reinforcement Φ of retaining wall 14mm, divide inside and outside two-layer setting, vertical spacing is 200mm, the inside and outside two-layer stud Φ 14mm of retaining wall, level interval 600mm, with the anchor connection of vertical applied force muscle, anchors into 250mm between first paragraph retaining wall and hat beam and between every section of retaining wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310626849.5A CN103628487B (en) | 2013-11-28 | 2013-11-28 | Circular deep foundation ditch retaining wall reversed construction method |
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| CN201310626849.5A CN103628487B (en) | 2013-11-28 | 2013-11-28 | Circular deep foundation ditch retaining wall reversed construction method |
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| CN103628487A CN103628487A (en) | 2014-03-12 |
| CN103628487B true CN103628487B (en) | 2016-05-18 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963345A (en) * | 2015-06-06 | 2015-10-07 | 黄勤 | Moulding bed structure and pouring method |
| CN105297773A (en) * | 2015-10-30 | 2016-02-03 | 马鞍山十七冶工程科技有限责任公司 | Reverse construction method earth excavation method capable of reducing cover-excavation earth volume |
| CN109898515A (en) * | 2019-04-16 | 2019-06-18 | 中国二十二冶集团有限公司 | Support of Foundation Pit Excavation method of the slope in conjunction with tubular pole |
| CN110552540A (en) * | 2019-08-08 | 2019-12-10 | 上海二十冶建设有限公司 | construction method of inverted retaining wall supporting structure of cyclone tank adjacent to existing building |
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| CN2199240Y (en) * | 1994-06-21 | 1995-05-31 | 邹宗煊 | Building basic technique foundation pit inclined guard post |
| KR100720321B1 (en) * | 2005-04-19 | 2007-05-25 | 주식회사 서영엔지니어링 | Auto-syncronized supporting system controlling to recover and offset displacement and repulsive force occurred according to working load, and constructing method of the supporting system |
| CN201351279Y (en) * | 2009-01-07 | 2009-11-25 | 中冶天工建设有限公司 | Circular deep foundation pit support |
| CN102493436A (en) * | 2011-11-25 | 2012-06-13 | 中冶集团武汉勘察研究院有限公司 | Novel manual tunneling construction method of rectangular anti-slide pile |
| CN102767187A (en) * | 2012-08-03 | 2012-11-07 | 天津二十冶建设有限公司 | Reverse construction method for pebble foundation swirling well |
| CN103088832A (en) * | 2013-02-21 | 2013-05-08 | 北京鑫实路桥建设有限公司 | Annular type impact method for digging rock at bottom of drilled pile shaft |
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| CN2199240Y (en) * | 1994-06-21 | 1995-05-31 | 邹宗煊 | Building basic technique foundation pit inclined guard post |
| KR100720321B1 (en) * | 2005-04-19 | 2007-05-25 | 주식회사 서영엔지니어링 | Auto-syncronized supporting system controlling to recover and offset displacement and repulsive force occurred according to working load, and constructing method of the supporting system |
| CN201351279Y (en) * | 2009-01-07 | 2009-11-25 | 中冶天工建设有限公司 | Circular deep foundation pit support |
| CN102493436A (en) * | 2011-11-25 | 2012-06-13 | 中冶集团武汉勘察研究院有限公司 | Novel manual tunneling construction method of rectangular anti-slide pile |
| CN102767187A (en) * | 2012-08-03 | 2012-11-07 | 天津二十冶建设有限公司 | Reverse construction method for pebble foundation swirling well |
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