CN204418187U - Subway protection region soil nail wall is in conjunction with double-row pile deep foundation ditch composite supporting construction - Google Patents
Subway protection region soil nail wall is in conjunction with double-row pile deep foundation ditch composite supporting construction Download PDFInfo
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- CN204418187U CN204418187U CN201420863841.0U CN201420863841U CN204418187U CN 204418187 U CN204418187 U CN 204418187U CN 201420863841 U CN201420863841 U CN 201420863841U CN 204418187 U CN204418187 U CN 204418187U
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- 239000002689 soil Substances 0.000 title claims abstract description 79
- 238000010276 construction Methods 0.000 title claims abstract description 43
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 239000002344 surface layer Substances 0.000 claims abstract description 8
- 239000007921 spray Substances 0.000 claims abstract description 5
- 239000004567 concrete Substances 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 239000004570 mortar (masonry) Substances 0.000 abstract 2
- 230000002787 reinforcement Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
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Abstract
A kind of subway protection region soil nail wall is in conjunction with double-row pile deep foundation ditch composite supporting construction, and it comprises the platform (7) of soil nailed wall retaining structure (10), Retaining Structure with Double-row Piles and the described soil nailed wall retaining structure of connection (10) and described Retaining Structure with Double-row Piles (11).Wherein, multiple soil nailing (5) hammers into perpendicular to the domatic compartment of terrain of soil nailed wall retaining structure (10), and described domatic extension steel mesh reinforcement sprayed mortar form the domatic net of soil nail wall and spray bank protection surface layer (6); Retaining Structure with Double-row Piles (11) has two campsheds perpendicular to foundation ditch (1), described campshed top arranges Guan Liang (2) respectively, coupling beam (3) lateral connection Guan Liang (2), the close foundation ditch side one side near the campshed (1) of foundation ditch hangs steel mesh reinforcement and sprayed mortar forms stake side net spray bank protection surface layer (4).
Description
Technical Field
The utility model relates to a construction technical field especially relates to a supporting construction of regional deep basal pit of subway protection.
Background
Along with the rapid development of urban rail transit construction, various engineering constructions are more and more closely related to subway facilities, wherein the engineering constructions have more and more prominent safety influence on the subway facilities, and particularly, the safety risk of deep foundation pit excavation at the periphery of the subway facilities is great, and engineering safety accidents happen at the moment. In order to ensure the safety of subway facilities, the deformation of a deep foundation pit supporting structure in the subway protection requirement area range is not larger than the limit value of the subway protection requirement, and the side of the subway facilities is not supported by prestressed anchor cables.
The traditional common support system of the deep foundation pit support structure in the subway protection area mainly comprises: lateral retaining systems (such as underground continuous walls, cast-in-place piles and steel pipe piles) and horizontal inner supports (such as steel supports and reinforced concrete supports).
Due to the fact that the span of the deep and large foundation pit is large, the traditional horizontal inner support supporting system is adopted, the supporting system is complex in stress and node connection, high in manufacturing cost, complex in construction, long in construction period and limited in construction space, the soil nailing wall without the inner support is adopted to be combined with the double-row pile deep foundation pit composite supporting structure, the stress is clear, the construction is simple, the construction space is large, the construction period is greatly shortened, and the comprehensive economic benefit is obvious. However, the existing soil nailing wall combined double-row pile deep foundation pit composite supporting structure still has the following defects: the periphery of the foundation pit is required to have a larger construction site, and the deformation is large when the geological condition is poor and the depth of the foundation pit is large. In addition, how to reduce the requirements on the site on the basis of safe application and expand the applicability under the conditions of poor geology and deep foundation pits are the problems which need further research at present.
Disclosure of Invention
An object of the utility model is to overcome prior art's is not enough, provide one kind in subway facility protection zone atress clear, construction space is big, the construction is simple, strut the little supporting construction of system deformation to can shorten construction period, promote comprehensive economic benefits on the basis that safety is suitable for.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a subway protection area soil nailing wall combined double-row pile deep foundation pit composite supporting structure, which comprises a soil nailing wall supporting structure positioned at the upper part of the supporting structure, and the soil nailing wall supporting structure is provided with a soil nailing wall slope net spraying slope protection surface layer and soil nails, and a double-row pile supporting structure positioned at the lower part of the supporting structure, and the double-row pile supporting structure is provided with row piles, crown beams and connecting beams,
the platform is connected with the soil nailing wall supporting structure and the double-row pile supporting structure; wherein,
the supporting surface of the soil nailing wall supporting structure is a slope surface with a certain angle, a plurality of soil nails are nailed into the soil nailing wall supporting structure at intervals vertical to the slope surface, and the slope surface is hung with a reinforcing mesh and sprayed with concrete to form a soil nailing wall slope surface mesh spraying slope protection surface layer;
the double-row pile supporting structure is provided with two row piles perpendicular to a foundation pit, the tops of the row piles are respectively provided with a crown beam, a connecting beam is transversely connected with the crown beams on the row piles, and a reinforcing mesh is hung on one side, close to the foundation pit, of the row piles close to the foundation pit and is sprayed with concrete to form a pile side mesh spraying slope protection surface layer.
Preferably, the pile diameter of the row pile is at least 1000 mm, and the interval between two row piles is 1600 mm to 2400 mm. The limitation of the spacing between two rows of piles contributes to the supporting strength of the double rows of piles.
Preferably, the platform is 2 metres wide. The proper platform width can firmly connect the soil nailing wall supporting structure and the double-row pile supporting structure.
Preferably, a waterproof curtain for stopping water by adopting double rows of stirring piles is arranged at the top of the soil nailing wall supporting structure. The water-stop curtain helps to waterproof the soil nailing wall supporting structure.
More preferably, the width of the slope surface of the soil nailing wall supporting structure is 1.25 times the slope height. The proper width-to-height ratio improves the strength of the soil nailing wall supporting structure.
More preferably, the length of the soil nails is equal to the height of the sloping surface of the soil nailing wall supporting structure. Limiting the length of the spikes helps to improve the strength of the earth nailed wall support structure.
More preferably, soil nails are driven into the soil nailing wall supporting structure at intervals of one third of the length thereof. Proper spacing definition helps to improve the strength of the earth nailed wall support structure.
The utility model discloses a supporting construction does not adopt the prestressed anchorage cable, does not adopt the level to support in yet, has simplified the work progress greatly, has enlarged the construction space to construction period has been shortened greatly.
The invention has the following beneficial effects:
(1 meeting the protection requirements of subway facilities, the soil nailing wall combined double-row pile deep foundation pit composite supporting structure does not need to adopt a prestressed anchor cable, has smaller deformation and meets the related requirements of subway facility protection.
(2 the construction space is large, the construction period is short, the soil nailing wall combined double-row pile deep foundation pit composite supporting structure does not need to adopt a horizontal inner support, very favorable construction conditions are created for foundation pit excavation and main structure construction, the construction progress is accelerated, and the construction period is greatly shortened.
(3) the construction process is simple, after the construction of the soil nailing wall combined with the double-row pile deep foundation pit composite supporting structure is completed, other supporting structures do not need to be constructed, complicated processes such as layered supporting, layered chiseling of inner supports and the like do not need to be performed, earthwork can be excavated in a large area and a main structure can be constructed, the construction process is greatly simplified, the construction progress is accelerated, and the comprehensive economic benefit is obvious.
Drawings
The invention will be described in further detail below with reference to embodiments and the accompanying drawings:
fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure: the row of piles 1, the hat roof beam 2, even roof beam 3, stake side net spout slope protection surface course 4, soil nail 5, the domatic net of soil nail wall spouts slope protection surface course 6, platform 7, stagnant water curtain 8, major structure 9, soil nail wall supporting construction 10, double row pile supporting construction 11, soil nail wall combines double row pile deep basal pit composite supporting construction 12.
The invention is further explained below with reference to the drawings and examples.
Detailed Description
Fig. 1 shows an embodiment of the present invention, which is a foundation pit of an office building. The foundation ditch shape is the hexagon, and foundation ditch east-west span, south-north span all are about 160m, and the foundation ditch degree of depth is 14.25m, and the foundation ditch east side, right side shows the major structure 9 in subway tunnel in figure 1 promptly, and the foundation ditch is in subway facility protection zone, and the foundation ditch support is not allowed to be beaten and is established the prestressed anchorage cable, and is stricter to supporting structure deformation control requirement. For satisfying subway facility protection requirement, and for satisfying requirements such as safety, time limit for a project, economy that the construction side provided, consequently adopt the utility model discloses soil nailing wall combines double row pile deep basal pit composite supporting construction.
As shown in fig. 1, a soil nailing wall supporting structure 10, which has a soil nailing wall slope surface net spray slope protection surface layer 6 and soil nails 5, located at an upper portion of a supporting structure 12, a double row pile supporting structure 11, which has row piles 1, crown beams 2 and coupling beams 3, located at a lower portion of the supporting structure 12, and a platform 7 connects the soil nailing wall supporting structure 10 and the double row pile supporting structure 11.
Preferably, the platform 7 is 2.0m wide.
The supporting surface of soil nailing wall supporting structure 10 is domatic of certain angle, and is a plurality of soil nail 5 perpendicular to domatic interval ground nail is gone into soil nailing wall supporting structure 10, domatic string reinforcing bar net and the spraying concrete form soil nailing wall slope protection surface course 6 that spouts of soil nailing wall slope net.
In the preferred embodiment of the present invention, the length of the soil nails 5 is equal to the height of the slope of the soil nailing wall supporting structure 10.
Preferably, the width of the slope surface of the soil nailing wall supporting construction 10 is 1.25 times the slope height.
More preferably, the slope height of the soil nailing wall is 5m, the slope width is 6.25m, soil nails 5 with the length of 5m are arranged on the slope body, and the slope top of the soil nailing wall adopts double rows of stirring piles for water stopping. Soil nails 5 are driven into the soil nailing wall supporting structure 10 at intervals of one third of the length thereof.
Double row pile supporting construction 11 has two row piles 1 of perpendicular to foundation ditch, row pile top sets up crown beam 2 respectively, and even roof beam 3 transverse connection crown beam 2 on row pile 1, the one side of being close to the foundation ditch side of row pile 1 near the foundation ditch hangs the reinforcing bar net and sprays concrete and form stake side net and spout slope protection surface course 4.
Preferably, the campshed 1 is a bored pile with a diameter of 1000 mm, an inner side spacing of 1600 mm and an outer side spacing of 2400 mm. More preferably, the two pickets 1 are spaced between 1600 mm and 2400 mm apart.
Preferably, a waterproof curtain 8 for stopping water by using double rows of stirring piles is arranged at the top of the soil nailing wall supporting structure 10.
The top soil nailing wall and the platform are arranged, so that the cantilever height and the side soil pressure of the double-row piles are effectively reduced, the cantilever capacity of the supporting structure is effectively improved by the portal frame structure of the double-row piles, the deformation of the supporting structure is reduced, the protection requirement of subway facilities is well met, sufficient construction space is provided, the construction process is simplified, the construction period is greatly shortened, and the comprehensive economic benefit is obviously improved.
Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments and application fields, and the above-described embodiments are illustrative, instructive, and not restrictive. Those skilled in the art, having the benefit of this disclosure, may effect numerous modifications thereto without departing from the scope of the invention as defined by the appended claims.
Claims (8)
1. A regional soil nailing wall of subway protection combines double row pile deep basal pit composite supporting construction (12), it includes:
the soil nailing wall supporting structure (10) is positioned at the upper part of the supporting structure (12) and is provided with a soil nailing wall slope net spraying slope protection surface layer (6) and soil nails (5);
the double-row pile supporting structure (11) is positioned at the lower part of the supporting structure (12) and is provided with row piles (1), a crown beam (2) and a connecting beam (3);
the platform (7) is connected with the soil nailing wall supporting structure (10) and the double-row pile supporting structure (11); wherein,
the supporting surface of the soil nailing wall supporting structure (10) is a slope surface with a certain angle, a plurality of soil nails (5) are nailed into the soil nailing wall supporting structure (10) at intervals vertical to the slope surface, and the slope surface is hung with a reinforcing mesh and sprayed with concrete to form a soil nailing wall slope surface mesh spraying protection surface layer (6);
double row pile supporting construction (11) have row pile (1) of two perpendicular to foundation ditches, the row pile top sets up crown beam (2) respectively, links roof beam (3) transverse connection crown beam (2) on row pile (1), and the one side of being close to the foundation ditch of row pile (1) that is close to the foundation ditch hangs the reinforcing bar net and sprays concrete and form pile side net and spout slope protection surface course (4).
2. The subway protection area soil nailing wall combined double-row pile deep foundation pit composite supporting structure (12) as claimed in claim 1, characterized in that: the pile diameter of the row piles (1) is at least 1000 mm, and the interval between the two row piles (1) is 1600 mm to 2400 mm.
3. The subway protection area soil nailing wall combined double-row pile deep foundation pit composite supporting structure (12) as claimed in claim 1, characterized in that: the width of the platform (7) is 2 meters.
4. The subway protection area soil nailing wall combined double-row pile deep foundation pit composite supporting structure (12) as claimed in claim 1, characterized in that: and a waterproof curtain (8) adopting double rows of stirring piles for stopping water is arranged at the top of the soil nailing wall supporting structure (10).
5. The subway protection area soil nailing wall combined double-row pile deep foundation pit composite supporting structure (12) as claimed in claim 1, characterized in that: the width of the slope surface of the soil nailing wall supporting structure (10) is 1.25 times of the slope height.
6. The subway protection area soil nailing wall combined double-row pile deep foundation pit composite supporting structure (12) as claimed in claim 1, characterized in that: the length of the soil nails (5) is equal to the height of the slope of the soil nailing wall supporting structure (10).
7. The subway protection area soil nailing wall combined double-row pile deep foundation pit composite supporting structure (12) as claimed in claim 1, characterized in that: the row piles (1) are cast-in-situ bored piles.
8. The subway protection area soil nailing wall combined double-row pile deep foundation pit composite supporting structure (12) as claimed in claim 1, characterized in that: soil nails (5) are nailed into the soil nailing wall supporting structure (10) at intervals of one third of the length thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420863841.0U CN204418187U (en) | 2014-12-31 | 2014-12-31 | Subway protection region soil nail wall is in conjunction with double-row pile deep foundation ditch composite supporting construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420863841.0U CN204418187U (en) | 2014-12-31 | 2014-12-31 | Subway protection region soil nail wall is in conjunction with double-row pile deep foundation ditch composite supporting construction |
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| CN204418187U true CN204418187U (en) | 2015-06-24 |
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| CN201420863841.0U Active CN204418187U (en) | 2014-12-31 | 2014-12-31 | Subway protection region soil nail wall is in conjunction with double-row pile deep foundation ditch composite supporting construction |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105064376A (en) * | 2015-08-25 | 2015-11-18 | 中铁二院昆明勘察设计研究院有限责任公司 | Combined type foundation pit supporting structure with multiple rows of piles |
| CN105297797A (en) * | 2015-11-30 | 2016-02-03 | 浙江华展工程研究设计院有限公司 | Hoop support form for in-situ protection of existing building in underground space development |
| CN106400813A (en) * | 2016-10-28 | 2017-02-15 | 北京城建勘测设计研究院有限责任公司 | Foundation pit support system and construction method thereof |
| CN107542098A (en) * | 2017-10-12 | 2018-01-05 | 中国建筑第二工程局有限公司 | Ultra-deep foundation pit supporting structure and construction method thereof |
| CN108978671A (en) * | 2018-07-12 | 2018-12-11 | 钱建良 | A kind of construction technology of soil nail wall |
| CN110144909A (en) * | 2019-05-21 | 2019-08-20 | 无锡市水利设计研究院有限公司 | A kind of soil-slope ruggedized construction and method |
| CN110258587A (en) * | 2019-05-07 | 2019-09-20 | 中铁第四勘察设计院集团有限公司 | The branch mark structure and construction method of side slope |
| CN110306559A (en) * | 2019-06-26 | 2019-10-08 | 广州穗岩土木科技股份有限公司 | A kind of construction method of subway entrance support pile |
| CN112211199A (en) * | 2020-04-06 | 2021-01-12 | 广东华星建设集团有限公司 | Large deep foundation pit supporting construction structure and method thereof |
-
2014
- 2014-12-31 CN CN201420863841.0U patent/CN204418187U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105064376A (en) * | 2015-08-25 | 2015-11-18 | 中铁二院昆明勘察设计研究院有限责任公司 | Combined type foundation pit supporting structure with multiple rows of piles |
| CN105297797A (en) * | 2015-11-30 | 2016-02-03 | 浙江华展工程研究设计院有限公司 | Hoop support form for in-situ protection of existing building in underground space development |
| CN106400813A (en) * | 2016-10-28 | 2017-02-15 | 北京城建勘测设计研究院有限责任公司 | Foundation pit support system and construction method thereof |
| CN106400813B (en) * | 2016-10-28 | 2019-02-19 | 北京城建勘测设计研究院有限责任公司 | A kind of foundation pit support system and its construction method |
| CN107542098A (en) * | 2017-10-12 | 2018-01-05 | 中国建筑第二工程局有限公司 | Ultra-deep foundation pit supporting structure and construction method thereof |
| CN108978671A (en) * | 2018-07-12 | 2018-12-11 | 钱建良 | A kind of construction technology of soil nail wall |
| CN110258587A (en) * | 2019-05-07 | 2019-09-20 | 中铁第四勘察设计院集团有限公司 | The branch mark structure and construction method of side slope |
| CN110144909A (en) * | 2019-05-21 | 2019-08-20 | 无锡市水利设计研究院有限公司 | A kind of soil-slope ruggedized construction and method |
| CN110144909B (en) * | 2019-05-21 | 2020-10-20 | 无锡市水利设计研究院有限公司 | Method for reinforcing soil slope reinforcing structure |
| CN110306559A (en) * | 2019-06-26 | 2019-10-08 | 广州穗岩土木科技股份有限公司 | A kind of construction method of subway entrance support pile |
| CN112211199A (en) * | 2020-04-06 | 2021-01-12 | 广东华星建设集团有限公司 | Large deep foundation pit supporting construction structure and method thereof |
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Address after: 510034 Guangdong Province, Guangzhou city Whampoa District Science City Moon Road No. 101 A block 8 layer Patentee after: Co., Ltd of heavy industry Architecture Design Institute of Guangdong Province Address before: 510034 Guangdong city of Guangzhou province Yuexiu District Yuehua Road No. 116 Patentee before: Co., Ltd of heavy industry Architecture Design Institute of Guangdong Province |