CN112049125A - Method for enhancing stability of supporting structure - Google Patents
Method for enhancing stability of supporting structure Download PDFInfo
- Publication number
- CN112049125A CN112049125A CN202011040592.1A CN202011040592A CN112049125A CN 112049125 A CN112049125 A CN 112049125A CN 202011040592 A CN202011040592 A CN 202011040592A CN 112049125 A CN112049125 A CN 112049125A
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- Prior art keywords
- piles
- supporting
- foundation pit
- stability
- supporting structure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Foundations (AREA)
Abstract
The invention discloses a method for enhancing the stability of a supporting structure, which is characterized in that a supporting structure is formed by combining a plurality of rows of supporting piles and a concrete slab at the bottom of a foundation pit, crown beams are arranged on the outer sides of the supporting piles, reinforcing mesh sheets are arranged in the concrete slab, and the reinforcing mesh sheets are anchored into the crown beams at two ends. According to the invention, the supporting piles and the connecting structures are additionally arranged in the external corner area which is frequently subjected to large deformation and insufficient in stability in the irregular-shaped deep foundation pit project, so that the deformation of the supporting structure is effectively reduced, the problem of excessive settlement or cracking deformation of the surrounding ground is avoided, the overall stability of the supporting structure is greatly improved, and the influence of foundation pit construction on the surrounding environment is reduced.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of construction engineering construction, in particular to a method for enhancing the stability of a supporting structure.
[ background of the invention ]
In the deep foundation pit engineering with an irregular shape, the phenomena that the supporting structure at the local shape mutation position is too large in deformation and insufficient in overall stability, the ground surface is seriously cracked and the like often occur, particularly in an external corner area protruding inwards to the foundation pit, the supporting structure is the most unstable part, and for the prominent problem, an effective method for improving the overall stability of the supporting structure needs to be considered, so that the safety of the foundation pit operation environment is ensured.
[ summary of the invention ]
In view of the above, in order to overcome the defects in the prior art, the invention provides a method for enhancing the stability of a supporting structure, which effectively reduces the deformation of the supporting structure, avoids the problem of excessive sedimentation or cracking deformation of the surrounding ground, and greatly improves the overall stability of the supporting structure.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a method for enhancing the stability of a supporting structure is characterized in that a supporting structure is formed by combining a plurality of rows of supporting piles and a concrete slab at the bottom of a foundation pit, crown beams are arranged on the outer sides of the supporting piles, reinforcing mesh sheets are arranged in the concrete slab, and the reinforcing mesh sheets are anchored into the crown beams at two ends.
When the cantilever row pile supporting scheme is applied, the invention comprises the following steps: the method is characterized in that front row supporting piles are arranged at the convex external angle in the pit at the bottom of the foundation pit, when the included angle of two side lines of the foundation pit is a non-obtuse angle, the included angle is cut at the position to be straight, rear row supporting piles are additionally arranged on the outer sides of straight oblique edges, crown beams are arranged on the outer sides of the front row supporting piles and the rear row supporting piles, and concrete with the same strength as the crown beams is filled between the front row supporting piles and the rear row supporting piles to form a concrete slab.
Further, the thickness of the concrete slab is equal to the height of the crown beam.
And a double-layer bidirectional reinforcing mesh is arranged in the concrete slab, the reinforcing mesh is anchored into the crown beams at two ends, and the anchoring length meets the requirement of the tensioned steel bar.
When the invention applies the pile support scheme: the deep foundation pit is characterized in that front row supporting piles are arranged at the bottom of the deep foundation pit and are in a right-angle shape, rear row supporting piles are additionally arranged on the rear sides of the front row supporting piles at the external corners of the deep foundation pit, crown beams are arranged on the outer sides of the front row supporting piles and the outer sides of the rear row supporting piles, and concrete with the same strength as the crown beams is filled between the front row supporting piles and the rear row supporting piles to form a concrete slab.
Preferably, the rear row of support piles are composed of at least two support piles, and crown beams are arranged at the tops of the support piles.
And a double-layer bidirectional reinforcing mesh is arranged in the concrete slab, the reinforcing mesh is anchored into the crown beams at two ends, and the anchoring length meets the requirement of the tensioned steel bar.
The thickness of the concrete slab is equal to the height of the crown beam.
And an inner support is arranged at the other external corner of the bottom of the deep foundation pit, which is opposite to the front row of support piles, and the inner support is butted with the top beam of the front row of support piles.
The invention has the advantages that the supporting piles and the connecting structures are additionally arranged in the external corner areas which often have large deformation and insufficient stability in the irregular-shaped deep foundation pit project, so that the deformation of the supporting structure is effectively reduced, the problem of overlarge sedimentation or cracking deformation of the peripheral ground is avoided, the integral stability of the supporting structure is greatly improved, the influence of foundation pit construction on the peripheral environment is reduced, and better safety guarantee is provided for the construction of the main structure.
[ description of the drawings ]
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of the cantilever row pile supporting scheme of the invention.
Fig. 2 is a schematic structural view of the present invention when a pile-supporting scheme is applied.
In the figure, 1, a foundation pit bottom, 2, front row support piles, 3, a concrete slab, 4, rear row support piles, 5, a crown beam, 6 and a crown beam; 01. the deep foundation pit, 02, front row support piles, 03, concrete slab, 04, rear row support piles, 05, crown beam, 06 and inner support.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention relates to a method for enhancing the stability of a supporting structure, which is characterized in that a supporting structure is formed by combining a plurality of rows of supporting piles and a concrete slab at the bottom of a foundation pit, crown beams are arranged on the outer sides of the supporting piles, reinforcing mesh sheets are arranged in the concrete slab, and the reinforcing mesh sheets are anchored into the crown beams at two ends.
According to the scheme, the supporting piles and the connecting structures are additionally arranged in the external corner area which is frequently subjected to large deformation and insufficient in stability in the irregular-shaped deep foundation pit project, so that the deformation of the supporting structure is effectively reduced, the problem of excessive settlement or cracking deformation of the peripheral ground is avoided, and the overall stability of the supporting structure is greatly improved.
The first embodiment is as follows:
referring to fig. 1, when the cantilever row pile supporting scheme is applied in the invention: a front row of support piles 2 are arranged at an exposed angle protruding into a pit of a foundation pit bottom 1, when an included angle between two side lines of the foundation pit bottom 1 is a non-obtuse angle, a cut angle is taken out to be straight, a rear row of support piles 4 are additionally arranged on the outer sides of straight oblique edges, crown beams 5 and crown beams 6 are arranged on the outer sides of the front row of support piles 2 and the rear row of support piles 4, and concrete with the same strength as the crown beams 6 and the crown beams 5 is filled between the front row of support piles 2 and the rear row of support piles 4 to form a concrete slab 3.
The thickness of the concrete slab 3 is equal to the height of the crown beam 6 and the crown beam 5.
And a double-layer bidirectional steel bar net is arranged in the concrete slab 3, the steel bar net is anchored into the crown beams at two ends, and the anchoring length meets the requirement of a tensioned steel bar.
Example two:
referring to fig. 2, when the present invention applies the pile-supporting scheme: the concrete slab is characterized in that front row supporting piles 02 are arranged at the bottom of a deep foundation pit 01, the front row supporting piles 02 are right-angled, rear row supporting piles 04 are additionally arranged on the rear sides of the front row supporting piles 02 at the external corners of the deep foundation pit, crown beams 05 are arranged on the outer sides of the front row supporting piles 02 and the outer sides of the rear row supporting piles 04, and concrete with the same strength as the crown beams 05 is filled between the front row supporting piles 02 and the rear row supporting piles 04 to form the concrete slab 03.
The rear row of support piles 04 are composed of at least two support piles, and crown beams 05 are arranged at the tops of the support piles.
And a double-layer bidirectional steel bar net piece is arranged in the concrete slab 03, the steel bar net is anchored into the crown beams 05 at two ends, and the anchoring length meets the requirement of a tensioned steel bar.
The thickness of the concrete slab 03 is equal to the height of the crown beam 05.
An inner support 06 is arranged at the other external corner of the bottom of the deep foundation pit 01 opposite to the front row support piles 02, and the inner support 06 is butted with the crown beam 05 of the front row support piles 02.
The method effectively reduces the deformation of the supporting structure, avoids the problem of overlarge deformation caused by settlement or cracking of the surrounding ground, greatly improves the overall stability of the supporting structure, reduces the influence of foundation pit construction on the surrounding environment, and provides better safety guarantee for the construction of the main structure.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The method for enhancing the stability of the supporting structure is characterized in that a supporting structure is formed by combining a plurality of rows of supporting piles and a concrete slab at the bottom of a foundation pit, crown beams are arranged on the outer sides of the supporting piles, reinforcing mesh sheets are arranged in the concrete slab, and the reinforcing mesh sheets are anchored into the crown beams at two ends.
2. A method of reinforcing the stability of a supporting structure according to claim 1, wherein when a cantilever row pile supporting scheme is applied: the method is characterized in that front row supporting piles are arranged at the convex external angle in the pit at the bottom of the foundation pit, when the included angle of two side lines of the foundation pit is a non-obtuse angle, the included angle is cut at the position to be straight, rear row supporting piles are additionally arranged on the outer sides of straight oblique edges, crown beams are arranged on the outer sides of the front row supporting piles and the rear row supporting piles, and concrete with the same strength as the crown beams is filled between the front row supporting piles and the rear row supporting piles to form a concrete slab.
3. A method of reinforcing support structural stability according to claim 2, wherein the thickness of the concrete slab is equal to the height of the crown beam.
4. A method of reinforcing the stability of a supporting structure as claimed in claim 2, wherein a double layer of bidirectional reinforcing mesh is provided in the concrete slab, and the reinforcing mesh is anchored into the crown beams at both ends.
5. A method of reinforcing the stability of a supporting structure according to claim 1, wherein, when using a shoring scheme: the deep foundation pit is characterized in that front row supporting piles are arranged at the bottom of the deep foundation pit and are in a right-angle shape, rear row supporting piles are additionally arranged on the rear sides of the front row supporting piles at the external corners of the deep foundation pit, crown beams are arranged on the outer sides of the front row supporting piles and the outer sides of the rear row supporting piles, and concrete with the same strength as the crown beams is filled between the front row supporting piles and the rear row supporting piles to form a concrete slab.
6. A method of reinforcing the stability of a supporting structure according to claim 5, wherein the rear row of piles is composed of at least two piles, and the top of each pile is provided with a crown beam.
7. A method of reinforcing the stability of a supporting structure as claimed in claim 5, wherein a double layer of bidirectional reinforcing mesh is provided in the concrete slab, and the reinforcing mesh is anchored into the crown beams at both ends.
8. A method of reinforcing support structural stability according to claim 5, wherein the thickness of the concrete slab is equal to the height of the crown beam.
9. The method for reinforcing the stability of the supporting structure as claimed in claim 5, wherein an inner support is arranged at the other external corner of the bottom of the deep foundation pit opposite to the front row of supporting piles, and the inner support is butted with the top beam of the front row of supporting piles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011040592.1A CN112049125A (en) | 2020-09-28 | 2020-09-28 | Method for enhancing stability of supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011040592.1A CN112049125A (en) | 2020-09-28 | 2020-09-28 | Method for enhancing stability of supporting structure |
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| Publication Number | Publication Date |
|---|---|
| CN112049125A true CN112049125A (en) | 2020-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011040592.1A Pending CN112049125A (en) | 2020-09-28 | 2020-09-28 | Method for enhancing stability of supporting structure |
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| CN (1) | CN112049125A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427229A (en) * | 2022-03-07 | 2022-05-03 | 肖荣军 | Deep foundation pit diagonal bracing supporting structure and diagonal bracing supporting method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120076594A1 (en) * | 2010-02-20 | 2012-03-29 | Gang Ho Park | Reinforced self-standing earth retaining structure using an arching effect and an underground excavation construction method using the same |
| CN210002415U (en) * | 2019-04-22 | 2020-01-31 | 中冶集团武汉勘察研究院有限公司 | board belt connection structure at external corner position of foundation pit |
| CN210562207U (en) * | 2019-07-15 | 2020-05-19 | 中铁工程设计咨询集团有限公司 | Row pile supporting construction at foundation pit external corner |
-
2020
- 2020-09-28 CN CN202011040592.1A patent/CN112049125A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120076594A1 (en) * | 2010-02-20 | 2012-03-29 | Gang Ho Park | Reinforced self-standing earth retaining structure using an arching effect and an underground excavation construction method using the same |
| CN210002415U (en) * | 2019-04-22 | 2020-01-31 | 中冶集团武汉勘察研究院有限公司 | board belt connection structure at external corner position of foundation pit |
| CN210562207U (en) * | 2019-07-15 | 2020-05-19 | 中铁工程设计咨询集团有限公司 | Row pile supporting construction at foundation pit external corner |
Non-Patent Citations (2)
| Title |
|---|
| 赵志缙等: "《简明深基坑工程设计施工手册》", 30 April 2004, 中国建筑工业出版社 * |
| 那建兴等: "《建筑施工安全专项方案编制》", 31 October 2009, 中国铁道出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427229A (en) * | 2022-03-07 | 2022-05-03 | 肖荣军 | Deep foundation pit diagonal bracing supporting structure and diagonal bracing supporting method thereof |
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Application publication date: 20201208 |
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