CN116537204A - Connection structure of foundation pit steel support and foundation pit enclosure - Google Patents
Connection structure of foundation pit steel support and foundation pit enclosure Download PDFInfo
- Publication number
- CN116537204A CN116537204A CN202310472741.9A CN202310472741A CN116537204A CN 116537204 A CN116537204 A CN 116537204A CN 202310472741 A CN202310472741 A CN 202310472741A CN 116537204 A CN116537204 A CN 116537204A
- Authority
- CN
- China
- Prior art keywords
- foundation pit
- steel support
- tensile
- enclosure
- pit steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 71
- 239000010959 steel Substances 0.000 title claims abstract description 71
- 230000006835 compression Effects 0.000 claims description 25
- 238000007906 compression Methods 0.000 claims description 25
- 230000002265 prevention Effects 0.000 claims description 9
- 239000004567 concrete Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
Abstract
The invention relates to a connection structure of a foundation pit steel support and a foundation pit enclosure, which comprises the following components: and a foundation pit steel support. The foundation pit enclosure is internally provided with at least one embedded part; at least one movable head, one end of the movable head is connected with the embedded part, and the other end is provided with a limit part; one side of the supporting end is connected with the foundation pit steel support, and the other side of the supporting end is provided with a sliding cavity in sliding fit with the movable head; the sliding cavity is internally provided with a tensile fit part and a compressive fit part, the compressive fit part is close to the foundation pit steel support, and the tensile fit part is far away from the foundation pit steel support; at least one wedge. The movable head is connected in the sliding cavity of the supporting end in a sliding way, after prestress is applied to jack the foundation pit steel support and the foundation pit enclosure, wedge blocks are filled in gaps between the tensile matching parts and the limiting parts, and therefore the foundation pit steel support has the tensile effect. The invention expands the use scene of the foundation pit steel support, does not need to change the structure of the foundation pit steel support, and has simple operation and convenient construction.
Description
Technical Field
The invention relates to the technical field of foundation pit steel supports, in particular to a connection structure of a foundation pit steel support and a foundation pit enclosure.
Background
To reduce the impact on surrounding structures, foundation pit bracing has been increasingly frequently designed with internal bracing. In the past, reinforced concrete forms are generally adopted for the inner support, and when the steel support is used more and more, the steel support system is concise in form and definite in stress, the deformation of the foundation pit can be adjusted, and the steel support is simpler and more convenient to manufacture, transport and construct, so that the novel deep foundation pit support technology is pollution-free, reusable, environment-friendly and convenient for earth excavation.
The existing steel support system has the problem that only compression resistance and tension resistance are realized, namely, the inward deformation of the foundation pit can be regulated and controlled, and the outward deformation of the foundation pit can not be regulated and controlled. Although the foundation pit is basically deformed inwards, the foundation pit is not prevented from being deformed outwards due to nonresistible factors and the like, and the invention is provided in order to avoid potential safety hazards caused by outwards deformation of the foundation pit.
Disclosure of Invention
The invention aims to provide a connection structure of a foundation pit steel support and a foundation pit enclosure, which can ensure that the foundation pit steel support has tensile property under the condition of not changing the structure of the foundation pit steel support, namely, the steel support system can still work normally and stably when the foundation pit is deformed outwards.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a connection structure of foundation pit steel support and foundation pit enclosure, comprising:
a foundation pit steel support;
the foundation pit support is internally provided with at least one embedded part;
one end of the movable head is connected with the embedded part, and the other end of the movable head is provided with a limiting part;
one side of the supporting end is connected with a foundation pit steel support, and the other side of the supporting end is provided with a sliding cavity in sliding fit with the movable head; the sliding cavity is internally provided with a tensile fit portion and a compressive fit portion, the compressive fit portion is close to the foundation pit steel support, and the tensile fit portion is far away from the foundation pit steel support.
At least one wedge block, when the foundation pit steel support needs to be stretched, the wedge block is filled between the limiting part and the stretching-resistant matching part; when the foundation pit steel support needs to resist compression, the wedge blocks are filled between the limiting parts and the compression-resistant matching parts; when the foundation pit steel support needs compression resistance and tensile resistance simultaneously, the wedge blocks are filled between the limiting part and the tensile matching part and between the limiting part and the compression matching part.
Preferably, the movable head comprises a connecting plate and two sliding plates, and the connecting plate is connected with the embedded part; the two sliding plates are parallel to each other and are arranged at intervals, and the sliding plates are fixed on the connecting plate; the limiting parts are arranged at the end parts of the sliding plates, far away from the connecting plates, and the limiting parts on the two sliding plates are arranged in opposite directions.
Preferably, a falling-preventing piece for preventing the wedge from falling is further arranged in the sliding cavity.
Preferably, the falling prevention piece is a plate which is vertically arranged; and the wedge block is provided with a limit groove matched with the falling prevention piece.
Preferably, the wedge is U-shaped.
Preferably, the wedge blocks are divided into compression-resistant wedge blocks and tension-resistant wedge blocks, and the compression-resistant wedge blocks are spanned on the falling prevention pieces; the tensile wedge blocks are simultaneously arranged on the falling prevention part and the movable head in a crossing mode.
Preferably, the sliding cavities are arranged in one-to-one correspondence with the movable heads, and the sliding cavities are mutually independent.
Preferably, a reinforcing member is arranged between every two adjacent sliding cavities.
Preferably, the embedded part is arranged in a concrete beam of the foundation pit enclosure.
After the scheme is adopted, the movable head is slidably connected in the sliding cavity of the supporting end, after prestress is applied to jack the foundation pit steel support and the foundation pit enclosure, wedge blocks are filled in gaps between the tensile matching parts and the limiting parts, and the foundation pit steel support can have tensile effect. The invention can determine the filling position of the wedge block according to the actual situation, thereby determining whether the foundation pit steel support resists compression or tensile, or both, and ensuring that the foundation pit steel support can work normally and stably. The invention expands the use scene of the foundation pit steel support, does not need to change the structure of the foundation pit steel support, and has simple operation and convenient construction.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic view of another view of the present invention.
Fig. 3 is a perspective view of the present invention (with the foundation pit supports and foundation pit steel braces hidden).
Fig. 4 is a schematic view of a movable head.
Fig. 5 is a schematic diagram of the connection of the articulating head to the support head.
Marking:
a concrete beam 10, an embedded part 11;
foundation pit steel supports 20;
the movable head 30, the connecting plate 31, the sliding plate 32 and the limiting part 33;
support end 40, sliding cavity 41, compression fit portion 42, tension fit portion 43, drop-proof member 44, reinforcement member 45;
compression wedge 51, tension wedge 52.
Description of the embodiments
As shown in fig. 1-5, the present invention discloses a connection structure of a foundation pit steel support and a foundation pit enclosure, which comprises: the foundation pit steel support 20, a foundation pit enclosure, a support end 40, three sets of movable heads 30 and at least one wedge block.
At least one embedded part 11 is arranged in the concrete beam 10 of the foundation pit enclosure, in this case, the embedded parts 11 can be arranged in one-to-one correspondence with the movable heads 30, or all the movable heads 30 share one embedded part 11. The movable head 30 is welded and fixed on the exposed plate of the embedded part 11.
The movable head 30 comprises a connecting plate 31 and two sliding plates 32, and the connecting plate 31 is connected with the embedded part 11. The two sliding plates 32 are arranged in parallel and at intervals, and the sliding plates 32 are fixed on the connecting plate 31 by welding. The end parts of the two sliding plates 32 far away from the connecting plate 31 are provided with limiting parts 33, and the limiting parts 33 on the two sliding plates 32 are arranged in opposite directions.
One side of the supporting end 40 is connected with the foundation pit steel support 20 through bolts, the other side is provided with sliding cavities 41 which are in one-to-one correspondence with the movable heads 30 and are in sliding fit, and the three sliding cavities 41 are mutually independent and avoid interference. The sliding cavity 41 is formed by enclosing steel plates, the sliding direction of the movable head 30 can be guaranteed to be consistent by the sliding cavity 41, meanwhile, the movable head 30 is limited, in addition, foreign objects can be prevented from interfering with wedge blocks to a certain extent by the sliding cavity 41, and the anti-falling effect is achieved on the wedge blocks. In order to ensure the stability of the sliding cavities 41, reinforcing members 45 are arranged between every two adjacent sliding cavities 41, and the reinforcing members 45 are abutted against steel plates surrounding the sliding cavities 41.
A tensile fit portion 43 and a compressive fit portion 42 are provided in the slide cavity 41, wherein the compressive fit portion 42 is disposed adjacent to the foundation pit steel support 20, the compressive fit portion 42 is a single piece of steel plate, and all the movable heads 30 share the compressive fit portion 42. The tensile matching parts 43 are arranged far away from the foundation pit steel support 20, the tensile matching parts 43 are correspondingly arranged in the sliding cavities 41, and the tensile matching parts 43 cannot interfere the movable head 30 to slide in the sliding cavities 41. A drop preventing member 44 is further provided in the slide chamber 41, the drop preventing member 44 is a steel plate vertically arranged, and the drop preventing member 44 is disposed between the two slide plates 32, so that the drop preventing member 44 can prevent deformation of the slide plates 32 to some extent.
The wedge block is in a U-shaped design, and the symmetrical design is not easy to deflect. The middle recess of the U-shaped wedge is a limiting groove, and the limiting groove is matched with the falling prevention piece 44 to prevent the wedge from falling. The wedges can be divided into compression and tension wedges 51, 52, wherein the compression wedge 51 straddles the drop guard 44 and the tension wedge 52 straddles both the drop guard 44 and the slide 32.
After the prestressing force is applied, when the foundation pit steel support 20 needs to be stretched, the stretching wedge 52 is filled between the limiting part 33 and the stretching matching part 43; when the foundation pit steel support 20 needs to resist compression, the compression wedge 51 is filled between the limiting part 33 and the compression matching part 42; when the foundation pit steel support 20 requires both compression and tension, the tension wedge 52 is filled between the limit portion 33 and the tension mating portion 43, and the compression wedge 51 is also filled between the limit portion 33 and the compression mating portion 42. The wedges may be provided in several numbers and at the same time may be provided in different thicknesses for filling.
The key point of the invention is that the loose head 30 is slidingly connected in the sliding cavity 41 of the supporting end 40, after prestressing force is applied to jack the foundation pit steel support 20 and the foundation pit enclosure, wedge blocks are filled in the gap between the tensile matching part 43 and the limiting part 33, so that the foundation pit steel support 20 has the tensile effect. The invention can determine the filling position of the wedge block according to the actual situation, thereby determining whether the foundation pit steel support 20 resists compression or tensile, or both, and ensuring that the foundation pit steel support 20 can work normally and stably. The invention expands the use scene of the foundation pit steel support 20, does not need to change the structure of the foundation pit steel support 20, and has simple operation and convenient construction.
The foregoing embodiments of the present invention are not intended to limit the technical scope of the present invention, and therefore, any minor modifications, equivalent variations and modifications made to the above embodiments according to the technical principles of the present invention still fall within the scope of the technical proposal of the present invention.
Claims (9)
1. The utility model provides a connection structure of foundation ditch steel support and foundation ditch enclosure which characterized in that includes:
a foundation pit steel support;
the foundation pit support is internally provided with at least one embedded part;
one end of the movable head is connected with the embedded part, and the other end of the movable head is provided with a limiting part;
one side of the supporting end is connected with a foundation pit steel support, and the other side of the supporting end is provided with a sliding cavity in sliding fit with the movable head; the sliding cavity is internally provided with a tensile fit part and a compressive fit part, the compressive fit part is arranged close to the foundation pit steel support, and the tensile fit part is arranged far away from the foundation pit steel support;
at least one wedge block, when the foundation pit steel support needs to be stretched, the wedge block is filled between the limiting part and the stretching-resistant matching part; when the foundation pit steel support needs to resist compression, the wedge blocks are filled between the limiting parts and the compression-resistant matching parts; when the foundation pit steel support needs compression resistance and tensile resistance simultaneously, the wedge blocks are filled between the limiting part and the tensile matching part and between the limiting part and the compression matching part.
2. The connection structure of a foundation pit steel support and a foundation pit enclosure of claim 1, wherein: the movable head comprises a connecting plate and two sliding plates, and the connecting plate is connected with the embedded part; the two sliding plates are parallel to each other and are arranged at intervals, and the sliding plates are fixed on the connecting plate; the limiting parts are arranged at the end parts of the sliding plates, far away from the connecting plates, and the limiting parts on the two sliding plates are arranged in opposite directions.
3. The connection structure of a foundation pit steel support and a foundation pit enclosure of claim 1, wherein: and the sliding cavity is also provided with a falling-preventing piece for preventing the wedge block from falling.
4. A connection structure of a foundation pit steel support and a foundation pit enclosure according to claim 3, wherein: the falling prevention piece is a vertically arranged plate; and the wedge block is provided with a limit groove matched with the falling prevention piece.
5. The connection structure of a foundation pit steel support and a foundation pit enclosure of claim 4, wherein: the wedge block is U-shaped.
6. The structure for connecting a steel foundation pit support and a foundation pit enclosure according to claim 4 or 5, wherein: the wedge blocks are divided into compression-resistant wedge blocks and tensile wedge blocks, and the compression-resistant wedge blocks are arranged on the falling prevention pieces in a crossing mode; the tensile wedge blocks are simultaneously arranged on the falling prevention part and the movable head in a crossing mode.
7. The connection structure of a foundation pit steel support and a foundation pit enclosure of claim 1, wherein: the sliding cavities are arranged in one-to-one correspondence with the movable heads, and are mutually independent.
8. The structure for connecting a steel foundation pit support to a foundation pit enclosure of claim 7, wherein: and a reinforcing piece is arranged between every two adjacent sliding cavities.
9. The connection structure of a foundation pit steel support and a foundation pit enclosure of claim 1, wherein: the embedded part is arranged in the concrete beam of the foundation pit enclosure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310472741.9A CN116537204A (en) | 2023-04-27 | 2023-04-27 | Connection structure of foundation pit steel support and foundation pit enclosure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310472741.9A CN116537204A (en) | 2023-04-27 | 2023-04-27 | Connection structure of foundation pit steel support and foundation pit enclosure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116537204A true CN116537204A (en) | 2023-08-04 |
Family
ID=87444636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310472741.9A Pending CN116537204A (en) | 2023-04-27 | 2023-04-27 | Connection structure of foundation pit steel support and foundation pit enclosure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116537204A (en) |
-
2023
- 2023-04-27 CN CN202310472741.9A patent/CN116537204A/en active Pending
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