CN218713052U - Deep basal pit draws stake wall supporting construction to one side - Google Patents
Deep basal pit draws stake wall supporting construction to one side Download PDFInfo
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- CN218713052U CN218713052U CN202222077443.3U CN202222077443U CN218713052U CN 218713052 U CN218713052 U CN 218713052U CN 202222077443 U CN202222077443 U CN 202222077443U CN 218713052 U CN218713052 U CN 218713052U
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Abstract
The utility model relates to a excavation supporting technology field, concretely relates to deep basal pit draws stake wall supporting construction to one side, including the vertical fixed bored concrete pile that sets up subaerial diaphragm wall and a plurality of in bank and arrange, the parallel interval arrangement of diaphragm wall and the bored concrete pile in bank, the fixed diaphragm wall hat roof beam that extends along diaphragm wall length direction that is provided with in top of diaphragm wall, the fixed bored concrete pile hat roof beam that extends along bored concrete pile length direction that is equipped with in top of bored concrete pile, connect the apron between diaphragm wall hat roof beam and the bored concrete pile hat roof beam, still be equipped with a plurality of waist roof beams on the continuous wall, waist roof beam and bored concrete pile hat roof beam all are provided with the stranded conductor stock, stock trompil position is located more than the rich water layer top surface. The utility model provides a deep basal pit draws pile wall supporting construction to one side does not occupy the space in the foundation ditch, can provide the construction operation face on a large scale, and does not need more open construction place, can improve the major structure efficiency of construction, can satisfy the deep basal pit support engineering demand use that has higher requirement to the time limit for a project.
Description
Technical Field
The utility model relates to a excavation supporting technology field, concretely relates to deep basal pit draws stake wall supporting construction to one side.
Background
The rapid development of urban construction enables people to continuously increase the demand for underground space development and utilization, foundation pit engineering is an important engineering for underground space development and utilization, and foundation pit support is an important link in high-rise building or large-scale engineering construction.
The deep foundation pit supporting structure in the prior art mainly comprises the following components: the anchor pulling type structure, the supporting type structure, the cantilever type structure, the multi-row pile structure, the supporting structure and the main body structure are combined in a reverse construction method.
The inner support supporting system often occupies the space in a foundation pit, and the unearthing efficiency and the construction period of a tower building are influenced; the anchor-pulling supporting system can maximally utilize the space in the pit and improve the construction efficiency, but the hole is formed in the water-rich stratum, so that water leakage is easily caused and the safety of the foundation pit is influenced; the cantilever type structure is not suitable for a foundation pit with larger depth; the multi-row pile structure occupies a large area of space outside the pit, and requires a wider construction site.
The supporting structure can not meet the requirements of deep foundation pit supporting engineering in a water-rich stratum, with limited construction land and higher requirements on construction period.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model aims at providing a pile wall supporting construction is drawn to one side to deep basal pit that satisfies in the rich water stratum, the construction land used is limited and have higher requirement to the time limit for a project.
The utility model relates to a deep basal pit draws pile wall supporting construction's technical scheme to one side, including vertical fixed setting in the ground diaphragm wall and a plurality of bored concrete piles that arrange in a row, the diaphragm wall with in a row the bored concrete pile parallel interval arrangement, the top of diaphragm wall is fixed to be provided with along the diaphragm wall length direction extension's diaphragm wall guan liang, the top of bored concrete pile is fixed to be equipped with along the bored concrete pile length direction extension guanliang;
the cover plate is used for connecting the continuous wall crown beam and the cast-in-place pile crown beam;
a plurality of waist beams are further arranged on the continuous wall;
and the waist beam and the cast-in-place pile crown beam are both provided with stranded wire anchor rods.
According to the preferable scheme, the continuous wall is a reinforced concrete continuous wall, the cast-in-place piles are reinforced concrete cast-in-place piles, and the continuous wall crown beam, the cast-in-place pile crown beam, the cover plate and the waist beam are all made of reinforced concrete.
Preferably, the stranded wire anchor rod is a prestressed steel stranded wire anchor rod, and the hole opening position of the steel stranded wire anchor rod is positioned above the top surface of the water-rich layer.
As a preferred scheme, the continuous wall is fixedly arranged on one side of the foundation pit excavation, and the cast-in-place pile is arranged on one side far away from the foundation pit excavation so as to form a 'front wall and rear pile' supporting mode.
Preferably, the thickness of the continuous wall is 800-1000 mm, the diameter of the cast-in-place piles is 800-1200 mm, and the distance between adjacent cast-in-place piles is 1000-1500 mm. The distance between the continuous wall and the cast-in-place pile is 3-5 m.
Preferably, the anchor rod is a common anchor rod or an enlarged head anchor rod, the hole diameter of the common anchor rod is 150-180 mm, and the diameter of the hole of the anchoring section of the enlarged head anchor rod is 400-600 mm.
Compared with the prior art, the beneficial effects of this application are:
the utility model provides a deep basal pit draws stake wall supporting construction to one side includes that vertical fixed setting is at subaerial diaphragm wall and a plurality of bored concrete pile that arrange in bank, the parallel interval arrangement of diaphragm wall and bored concrete pile in bank, the fixed diaphragm wall that is provided with along diaphragm wall length direction extension in top of diaphragm wall guan liang, the fixed bored concrete pile guan liang that is equipped with along bored concrete pile length direction extension in top of bored concrete pile, connect the apron between diaphragm wall guanliang and the bored concrete pile guanliang liang, still be equipped with a plurality of waist girds on the diaphragm wall, waist gird and bored concrete pile guanliang all are provided with the stranded conductor stock. The utility model provides a deep basal pit draws pile wall supporting construction to one side does not occupy the space in the foundation ditch, avoid influencing unearthed efficiency and tower construction period, utilize anchor rope sharing structure internal force above the rich water stratum, rich water stratum and following depth range rely on "preceding wall back pile" structure of big rigidity to keep off, can furthest avoid the anchor rope pore-forming in the rich water layer, in order to avoid causing the percolating water and influence foundation ditch safety, and supporting construction rigidity is big, control deformability is strong, can be used for the great foundation ditch of the degree of depth, preceding wall back pile "structure can not occupy the outer space of hole on a large scale, do not need wider construction site, can satisfy in the rich water stratum, construction land is limited and have the deep basal pit supporting engineering demand of higher requirement to the time limit for a project and use.
The method has the effects of supporting and retaining soil, preventing seepage and stopping water, providing a large-range working surface, improving construction efficiency, saving construction period and reducing cost, and has good benefits in the aspects of controlling soil displacement, protecting surrounding environment and the like.
Drawings
Fig. 1 is the utility model discloses deep basal pit draws pile wall supporting construction's schematic structure to one side.
The concrete-filled continuous wall comprises a continuous wall body 1, a cast-in-place pile 2, a cast-in-place pile 3, a continuous wall crown beam 4, a reinforced concrete cover plate 5, a supporting pile crown beam 6, a waist beam 7, a stranded wire anchor rod 8 and the ground.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
The utility model relates to a deep basal pit draws stake wall supporting construction's preferred embodiment to one side, as shown in figure 1, including vertical fixed diaphragm wall 1 and a plurality of bored concrete pile 2 of arranging in a row that set up on ground 8, diaphragm wall 1 and the parallel interval arrangement of bored concrete pile 2 of in a row, diaphragm wall 1 and the parallel arrangement of bored concrete pile 2 that forms one row, single row of stake structure can not occupy the outer space of hole on a large scale, does not need the open construction site; the top of the thickness of the continuous wall 1 is fixedly provided with a continuous wall top beam extending along the length direction of the continuous wall 1, the top of the cast-in-place pile 2 is fixedly provided with a cast-in-place pile 2 top beam extending along the length direction of the cast-in-place pile 2, a cover plate is connected between the continuous wall top beam and the cast-in-place pile 2 top beam, the continuous wall 1 is further provided with a plurality of waist beams 6, and the waist beams 6 and the cast-in-place pile 2 top beams are both provided with stranded wire anchor rods 7.
The continuous wall 1 is a reinforced concrete continuous wall, the cast-in-place piles 2 are reinforced concrete cast-in-place piles 2, and the continuous wall crown beam 3, the cast-in-place pile crown beam, the cover plate and the waist beam 6 are all made of reinforced concrete. Wherein, stranded conductor stock 7 of this application is prestressing force stranded conductor stock 7.
Further, during concrete construction, the continuous wall 1 is fixedly arranged on one side of the foundation pit excavation, and the filling pile 2 is arranged on one side far away from the foundation pit excavation, so that a supporting mode of front wall rear pile is formed.
Furthermore, the thickness of the continuous wall 1 is 800-1000 mm, the diameter of the cast-in-place piles 2 is 800-1200 mm, the distance between adjacent cast-in-place piles 2 is 1000-1500 mm, and the distance between the continuous wall 1 and the cast-in-place piles 2 is 3-5 m.
Wherein, the anchor rod is a common anchor rod or an expanded head anchor rod, the aperture of the hole formed by the common anchor rod is 150-180 mm, and the diameter of the hole formed by the anchoring section of the expanded head anchor rod is 400-600 mm.
The concrete construction method of the cable-stayed pile wall supporting structure for the deep foundation pit comprises the following steps:
s1, constructing a reinforced concrete continuous wall 1 and a reinforced concrete cast-in-place pile 2;
the reinforced concrete continuous wall 1 is arranged on one side of a foundation pit, and the reinforced concrete cast-in-place pile 2 is arranged on one side far away from the foundation pit, so that a supporting form of a front wall and rear pile is formed.
S2, constructing a prestressed steel strand anchor rod 7, the continuous wall 1, a reinforced concrete crown beam, a reinforced concrete cover plate 4 and a support pile reinforced concrete crown beam, maintaining to the designed strength, tensioning and locking the prestressed steel strand anchor rod 7 of the first channel;
wherein, the first prestressed steel strand anchor rod 7 is anchored on the reinforced concrete crown beam 5 of the support pile, the distance and the length of the anchor rod are selected according to calculation, a common anchor rod or an enlarged footing anchor rod can be adopted, the pore diameter of the pore-forming hole of the common anchor rod is generally 150mm to 180mm, and the pore diameter of the anchoring section of the enlarged footing anchor rod is generally 400mm to 600mm.
S3, excavating earthwork in the pit to the bottom surface of the next reinforced concrete waist beam 6, maintaining to the designed strength, and tensioning and locking a prestressed steel strand anchor rod 7 at the position of the reinforced concrete waist beam 6;
the prestressed steel strand anchor rods 7 are arranged at the positions among the reinforced concrete cast-in-place piles 2, holes are formed in the reinforced concrete continuous wall 1 and penetrate through the piles of the reinforced concrete cast-in-place piles 2, and the distance between the anchor rods is the modulus of the distance between the cast-in-place piles 2.
And S4, repeating the step S3 until the foundation pit is excavated to the bottom.
Wherein the position of the hole of the steel strand anchor rod 7 is higher than the top surface of the water-rich layer, so as to prevent water leakage caused by hole forming.
Further, the reinforced concrete continuous wall 1 forms a waterproof curtain through a reinforced concrete pile wall through facility stirring piles and jet grouting piles.
Compared with a supporting type supporting structure, the deep foundation pit diagonal-pulling pile wall supporting structure can provide a large-range construction space in a foundation pit and improve construction efficiency; compared with a cantilever type supporting structure, the deformation can be better controlled, and the method can be suitable for ultra-deep foundation pits; compared with a pure anchoring and pulling supporting system, particularly in a water-rich stratum, the method can avoid forming holes in a water-rich layer to the maximum extent, and reduce the leakage risk of the foundation pit; compared with a multi-row pile supporting system, the required construction space is small, and the method is suitable for a site with limited construction space.
The method has the effects of supporting and retaining soil, preventing seepage and stopping water, providing a large-range working surface, improving construction efficiency, saving construction period and reducing cost, and has good benefits in the aspects of controlling soil displacement, protecting surrounding environment and the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (6)
1. A deep foundation pit diagonal pile wall supporting structure is characterized by comprising a continuous wall and a plurality of cast-in-place piles, wherein the continuous wall is vertically and fixedly arranged on the ground, the cast-in-place piles are arranged in rows in parallel at intervals, a continuous wall crown beam extending along the length direction of the continuous wall is fixedly arranged at the top of the continuous wall, and a cast-in-place pile crown beam extending along the length direction of the cast-in-place piles is fixedly arranged at the top of the cast-in-place piles;
the cover plate is used for connecting the continuous wall crown beam and the cast-in-place pile crown beam;
a plurality of waist beams are further arranged on the continuous wall;
and the waist beam and the cast-in-place pile crown beam are both provided with stranded wire anchor rods.
2. The deep foundation pit diagonal pile wall supporting structure of claim 1, characterized in that: the continuous wall is a reinforced concrete continuous wall, the cast-in-place piles are reinforced concrete cast-in-place piles, and the continuous wall top beams, the cast-in-place pile top beams, the cover plates and the waist beams are all made of reinforced concrete materials.
3. The deep foundation pit cable-stayed pile wall supporting structure according to claim 1, characterized in that: the stranded wire anchor rod is a prestressed steel stranded wire anchor rod, and the hole opening position of the steel stranded wire anchor rod is positioned above the top surface of the water-rich layer.
4. The deep foundation pit diagonal pile wall supporting structure of claim 1, characterized in that: the diaphragm wall is fixedly arranged on one side of the foundation pit excavation, and the filling pile is arranged on one side far away from the foundation pit excavation so as to form a supporting form of a front wall and rear pile.
5. The deep foundation pit diagonal pile wall supporting structure of claim 1, characterized in that: the thickness of the continuous wall is 800-1000 mm, the diameter of the cast-in-place piles is 800-1200 mm, and the distance between every two adjacent cast-in-place piles is 1000-1500 mm; the distance between the continuous wall and the cast-in-place pile is 3-5 m.
6. The deep foundation pit diagonal pile wall supporting structure of claim 1, characterized in that: the anchor rod is a common anchor rod or an enlarged head anchor rod, the hole forming aperture of the common anchor rod is 150-180 mm, and the hole forming diameter of the anchoring section of the enlarged head anchor rod is 400-600 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222077443.3U CN218713052U (en) | 2022-08-08 | 2022-08-08 | Deep basal pit draws stake wall supporting construction to one side |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222077443.3U CN218713052U (en) | 2022-08-08 | 2022-08-08 | Deep basal pit draws stake wall supporting construction to one side |
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| CN218713052U true CN218713052U (en) | 2023-03-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116006183A (en) * | 2023-03-28 | 2023-04-25 | 中国电建集团北京勘测设计研究院有限公司 | Supporting system and method suitable for circular pressure regulating well under poor geological conditions |
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2022
- 2022-08-08 CN CN202222077443.3U patent/CN218713052U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116006183A (en) * | 2023-03-28 | 2023-04-25 | 中国电建集团北京勘测设计研究院有限公司 | Supporting system and method suitable for circular pressure regulating well under poor geological conditions |
| CN116006183B (en) * | 2023-03-28 | 2023-06-20 | 中国电建集团北京勘测设计研究院有限公司 | Supporting system and method suitable for circular pressure regulating well under poor geological conditions |
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