CN112195931B - Foundation pit supporting system - Google Patents
Foundation pit supporting system Download PDFInfo
- Publication number
- CN112195931B CN112195931B CN202011081447.8A CN202011081447A CN112195931B CN 112195931 B CN112195931 B CN 112195931B CN 202011081447 A CN202011081447 A CN 202011081447A CN 112195931 B CN112195931 B CN 112195931B
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- Prior art keywords
- supporting
- plate
- fixed
- sand
- foundation pit
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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
Abstract
The application relates to a foundation pit supporting system. After the temporary supporting plate is pulled out, sandy soil on the upper portion of the temporary supporting plate, which is close to the side wall of the foundation pit, flows between the bottom supporting and protecting plate and the fixed supporting and protecting plate and buries the fixed pipe and the folding spring piece. That is, the gap between the fixed tube and the leaf spring is mostly filled with sand. At this time, the viscous slurry is output to the sandy soil through the output hole of the fixed pipe. Then the bolt is loosened to release the fixed pipe, and after the viscous paste is just output, the viscous paste is coated on the surface of the fixed pipe to play a role in lubrication so as to conveniently draw the fixed pipe out of the sandy soil and the fixed supporting and protecting plate. After the fixing tube is pulled out from the fixing support guard plate, the folding spring pieces are released and quickly restored to a folded state to clamp the sand located between the folding spring pieces. The strength and density of the sand between the folded leaf springs can be enhanced. Meanwhile, the adhesive slurry can also be used for adhering sand and increasing the adhesive force among sand and soil particles.
Description
Technical Field
The application relates to the field of buildings, in particular to a foundation pit supporting system.
Background
The foundation pit support is a supporting, blocking, reinforcing and protecting measure adopted for the side wall of the foundation pit and the surrounding environment in order to ensure the safety of the construction of an underground structure and the surrounding environment of the foundation pit. For sandy soil foundation pits with poor viscosity, the molding capability is not strong due to insufficient viscosity between sandy soil and sand, so that the supporting difficulty of the sandy soil foundation pits is high.
Disclosure of Invention
In view of the above, the present invention provides a foundation pit supporting system.
A foundation pit support system for supporting a sandy soil type foundation pit, comprising:
the bottom supporting and protecting plate is used for supporting and protecting the bottom of the side wall of the foundation pit;
the temporary supporting and protecting plate is arranged at the upper part of the bottom supporting and protecting plate and is used for supporting and protecting the upper part of the side wall of the foundation pit;
the fixed supporting and protecting plate is arranged on one side, far away from the side wall of the foundation pit, of the bottom supporting and protecting plate and the temporary supporting and protecting plate;
the plurality of reinforcing components are arranged at the middle lower part of the fixed supporting and protecting plate in an array; each of the reinforcement assemblies includes:
the mounting plate is provided with two through holes at intervals, the surface of the mounting plate is provided with a folding spring piece, and the folding spring piece is positioned between the two through holes;
the two fixing tubes penetrate through the mounting plate through the through holes respectively and extend out of two sides of the folding spring piece, the folding spring piece is clamped between the two fixing tubes so as to keep the folding spring piece in a stretching state, and a plurality of output holes are formed in the surfaces of the fixing tubes at intervals and used for discharging viscous paste;
the fixed pipe and the folding spring piece are used for penetrating the fixed supporting plate and extending towards the bottom supporting plate;
the side wall of each through hole is respectively provided with at least two fixing holes at intervals, and the fixing holes are used for penetrating through bolts to fix the fixing pipes in the through holes;
after the temporary supporting plate is pulled out, sand flows towards the space between the bottom supporting plate and the fixed supporting plate and buries the fixed pipe and the folding spring pieces, viscous slurry is output to the sand through the fixed pipe, then bolts are loosened to release the fixed pipe, the fixed pipe is pulled out from the sand and the fixed supporting plate, the folding spring pieces are released and quickly restore to a folding state to clamp the sand between the folding spring pieces, and bricks are piled between the upper part of the fixed supporting plate and the sand.
In one embodiment, the device further comprises a three-way pipe, two pipe orifices of the three-way pipe are respectively used for connecting the fixed pipe, and the other pipe orifice of the three-way pipe is used for connecting a delivery pump.
In one embodiment, the fixing tube and the folding spring piece are inclined toward the temporary support plate.
In one embodiment, the angle of inclination of the fixing tube and the folding spring piece toward the temporary support plate is 30 °.
The utility model provides a retaining and protecting system for foundation ditch, will the back is taken out to the temporary support board, is located temporary support board upper portion is close to the sandy soil orientation of foundation ditch lateral wall the bottom prop the backplate with flow between the fixed backplate and bury the fixed pipe with the folding spring piece. I.e. the gap between the fixed tube and the leaf spring is mostly filled with sand. And at the moment, outputting the viscous slurry to the sandy soil through the output hole of the fixed pipe. And then loosening the bolts to release the fixed pipe, and coating the adhesive slurry on the surface of the fixed pipe just after the adhesive slurry is output, so that the lubricating effect can be achieved, and the fixed pipe can be conveniently drawn out from the sandy soil and the fixed supporting and protecting plate. After the fixing tube is withdrawn from the fixing support plate, the folded spring pieces are released and rapidly restored to a folded state, i.e., the folded portions of the folded spring pieces and the spaces between the folded portions are compressed to clamp the sand located between the folded spring pieces. The strength and density of the sand between the leaf spring folds can thus be increased. Meanwhile, the adhesive slurry can also be used for adhering sand and increasing the adhesive force among sand and soil particles. The slurry can be solidified after a period of time, and can further play a role in enhancing the strength of the side wall of the foundation pit. It can be understood that the bottom support guard plate can play a certain role in preventing the collapse of the side wall of the foundation pit. And the fixed supporting and protecting plate further plays a role in protection. The reinforcing assemblies are arranged in an array mode on the fixed supporting and protecting plates, so that the adhesion force between sand and soil particles buried between the fixed supporting and protecting plates and the bottom supporting and protecting plates is enhanced, the overall strength is enhanced, and a good protection effect is achieved.
And finally, bricks are piled between the upper part of the fixed supporting plate and the sandy soil to reinforce the strength of the upper structure of the fixed supporting plate and avoid collapse of the sandy soil.
Description of the drawings:
figure 1 is a cross-sectional view of an excavation supporting system provided in accordance with one embodiment of the present application;
FIG. 2 is a schematic view of a reinforcement assembly provided in accordance with one embodiment of the present application;
FIG. 3 is a schematic view of a reinforcement assembly provided in accordance with another embodiment of the present application;
FIG. 4 is a schematic illustration of an excavation retaining system according to another embodiment of the present application with a temporary retaining plate removed;
fig. 5 is a schematic view of an excavation supporting system provided in accordance with an embodiment of the present application after adding bricks.
Description of reference numerals:
foundation pit support system 10
Bottom support guard plate 110
Temporary support guard plate 120
Fixing support guard plate 200
Folding spring plate 320
Fixed tube 312
Fixing hole 314
Bolt 316
Three-way pipe 315
A fold 317.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to be used for explaining the present application and should not be construed as limiting the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; the two elements can be directly connected or indirectly connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly contact but through another feature in between. Also, a first feature being "on," "above" and "over" a second feature includes the first feature being directly on and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1, an embodiment of the present application provides an excavation supporting system. The foundation pit supporting system is used for supporting a sandy soil type foundation pit. The foundation pit supporting system comprises a bottom supporting and protecting plate, a temporary supporting and protecting plate, a fixed supporting and protecting plate and a plurality of reinforcing components. The bottom supporting plate is used for supporting the bottom of the side wall of the foundation pit. Namely, the bottom supporting plate can vertically block the sandy soil at the bottom of the side wall of the foundation pit from sliding towards the foundation pit. The temporary supporting plate is arranged on the upper portion of the bottom supporting plate and used for supporting the upper portion of the side wall of the foundation pit. The temporary supporting and protecting plate and the bottom supporting and protecting plate jointly form a blocking surface for blocking sandy soil on the side wall of the foundation pit from flowing into the foundation pit. The temporary support guard plate and the bottom support guard plate can be connected through riveting mechanical connection.
The fixed supporting and protecting plate is arranged on one side, far away from the side wall of the foundation pit, of the bottom supporting and protecting plate and the temporary supporting and protecting plate. After the bottom support guard plate and the temporary support guard plate are arranged, partial space can be reserved in the foundation pit, and then the fixed support guard plate is arranged, namely, a space for filling sand is reserved between the fixed support guard plate and the bottom support guard plate as well as between the fixed support guard plate and the temporary support guard plate. The plurality of reinforcing components are arranged at the middle lower part of the fixed supporting and protecting plate in an array mode.
Referring to fig. 2, each of the reinforcing members includes a mounting plate, two fixing pipes. The mounting panel interval is provided with two through-holes. And a folding spring piece is arranged on the surface of the mounting plate. The folding spring piece is positioned between the two through holes. Thus, the leaf spring may comprise a plurality of fold sections which are connected end to end.
Referring to fig. 3, in the natural state, the folded portions are folded close to each other. And the orthographic projection of the folding part on the mounting plate is greater than the minimum distance between the edges of the two through holes, so when the fixing pipes extend out of the through holes, the two ends of the folding part can be pushed and the space between the folding parts can be driven to be increased, and at the moment, the two fixing pipes clamp the folding spring piece so as to keep the folding spring piece in a stretching state.
Referring to fig. 2, the two fixing tubes pass through the mounting plate through the through holes, respectively, and extend out from both sides of the leaf spring, and the leaf spring is sandwiched between the two fixing tubes, so that the leaf spring is maintained in a stretched state. The two fixing tubes may be arranged in parallel. The two fixing tubes can clamp the connection part between the folding part and the folding part of the folding spring piece to push the folding spring piece to be in a stretching state, namely the space between the folding part and the folding part is increased. In order to increase the contact area between the fixing tube and the folding spring piece, the fixing tube may be a rectangular tube. The surface of the fixed pipe is provided with a plurality of output holes at intervals for the slurry to flow out. The slurry can be water mixed with sand, or concrete slurry and the like.
The fixed tube and the folded spring piece are used for penetrating the fixed supporting plate and extending towards the bottom supporting plate. The installation plate can be positioned on one side of the fixed supporting plate far away from the bottom supporting plate. It will be appreciated that the stationary backplate may be provided with a hole through the stationary tube.
The side wall of each through hole is provided with at least two fixing holes at intervals respectively, and the fixing holes are used for penetrating through bolts to fix the fixing pipes in the through holes. The axis of the fixing hole is perpendicular to the axis of the through hole. After the through hole penetrates through the fixing pipe, the bolt can penetrate through the fixing hole to abut against the side part of the fixing pipe, so that the fixing pipe is fixed in the through hole.
Referring to fig. 4, after the temporary support plate is pulled out, the sand located on the upper portion of the temporary support plate and close to the sidewall of the foundation pit flows toward the space between the bottom support guard plate and the fixed support guard plate and buries the fixed pipe and the folded spring pieces. I.e. the gap between the fixed tube and the leaf spring is mostly filled with sand. And at the moment, outputting the viscous slurry to the sandy soil through the output hole of the fixed pipe. Then the bolt is loosened to release the fixed pipe, and a part of the viscous paste can be adhered to the surface of the fixed pipe immediately after the viscous paste is output. The friction force applied when the fixed pipe adhered with the viscous paste is drawn out is smaller than the friction force applied when the dry sandy soil is directly contacted with the fixed pipe when the fixed pipe is drawn out. Namely, the slurry can play a role of lubrication so as to facilitate the extraction of the fixed pipe from the sandy soil and the fixed supporting plate. After the fixing tube is withdrawn from the fixing support plate, the folded spring pieces are released and rapidly restored to a folded state, i.e., the folded portions of the folded spring pieces and the spaces between the folded portions are compressed to clamp the sand located between the folded spring pieces. The strength and density of the sand between the leaf spring folds can thus be increased. Meanwhile, the viscous slurry has certain fluidity, at least part of the viscous slurry can flow into the sandy soil to be mixed with the sandy soil, and compared with dry sandy soil, the viscosity of the sandy soil mixed with the viscous slurry can be increased, so that the adhesive force between the sandy soil particles adhered with the viscous slurry can be larger, namely the viscous slurry can also play a role in adhering the sandy soil and increasing the adhesive force between the sandy soil particles. No matter the slurry is water containing silt or concrete slurry, the slurry can be solidified after a period of time, and the effect of enhancing the strength of the side wall of the foundation pit can be further achieved. It can be understood that the bottom support guard plate can play a certain role in preventing the collapse of the side wall of the foundation pit. And the fixed supporting and protecting plate further plays a role in protection. The reinforcing assemblies are arranged in an array mode on the fixed supporting and protecting plates, so that the adhesion force between sand and soil particles buried between the fixed supporting and protecting plates and the bottom supporting and protecting plates is enhanced, the overall strength is enhanced, and a good protection effect is achieved. Referring to fig. 5, bricks are finally piled up between the upper portion of the fixed supporting plate and the sand to reinforce the strength of the upper structure of the fixed supporting plate and prevent the sand from collapsing.
In one embodiment, the device further comprises a three-way pipe, two pipe orifices of the three-way pipe are respectively used for connecting the fixed pipe, and the other pipe orifice of the three-way pipe is used for connecting a delivery pump. The delivery pump is used for delivering the viscous paste to the two fixed pipes.
In one embodiment, the fixing tube and the folding spring piece are inclined toward the temporary support plate. That is, the inclination directions of the fixed pipe and the folding spring pieces are consistent with the direction of the sand sliding downwards from the upper part of the bottom support guard plate, so the sand can fully fill the gaps between the folding spring pieces.
In one embodiment, the angle of inclination of the fixing tube and the folding spring piece toward the temporary support plate is 30 °. The filling rate of gaps among the folding spring pieces is the highest when the angle sand is filled.
The foregoing is only a preferred embodiment of the present application and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present application and these modifications should also be considered as the protection scope of the present application.
Claims (4)
1. A foundation pit supporting system is used for supporting a sandy soil type foundation pit and is characterized by comprising:
the bottom supporting and protecting plate is used for supporting and protecting the bottom of the side wall of the foundation pit;
the temporary supporting and protecting plate is arranged at the upper part of the bottom supporting and protecting plate and is used for supporting and protecting the upper part of the side wall of the foundation pit;
the fixed supporting and protecting plate is arranged on one side, far away from the side wall of the foundation pit, of the bottom supporting and protecting plate and the temporary supporting and protecting plate;
the plurality of reinforcing components are arranged at the middle lower part of the fixed supporting and protecting plate in an array; each of the reinforcement assemblies includes:
the mounting plate is provided with two through holes at intervals, the surface of the mounting plate is provided with a folding spring piece, and the folding spring piece is positioned between the two through holes;
the two fixing tubes penetrate through the mounting plate through the through holes respectively and extend out of two sides of the folding spring piece, the folding spring piece is clamped between the two fixing tubes so as to keep the folding spring piece in a stretching state, and a plurality of output holes are formed in the surfaces of the fixing tubes at intervals and used for discharging viscous paste;
the fixed pipe and the folding spring piece are used for penetrating the fixed supporting plate and extending towards the bottom supporting plate;
the side wall of each through hole is respectively provided with at least two fixing holes at intervals, and the fixing holes are used for penetrating through bolts to fix the fixing pipes in the through holes;
after the temporary supporting plate is pulled out, sand flows towards the space between the bottom supporting plate and the fixed supporting plate and buries the fixed pipe and the folding spring pieces, viscous slurry is output to the sand through the fixed pipe, then bolts are loosened to release the fixed pipe, the fixed pipe is pulled out from the sand and the fixed supporting plate, the folding spring pieces are released and quickly restore to a folding state to clamp the sand between the folding spring pieces, and bricks are piled between the upper part of the fixed supporting plate and the sand.
2. The excavation supporting system of claim 1, further comprising a tee, two ends of the tee being respectively adapted to be connected to the stationary pipe, and another end of the tee being adapted to be connected to a delivery pump.
3. The excavation supporting system of claim 2, wherein the fixed tube and the leaf spring are inclined toward the temporary support plate.
4. The excavation supporting system of claim 3, wherein the angle at which the fixed tube and the leaf spring are inclined toward the temporary supporting plate is 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011081447.8A CN112195931B (en) | 2020-10-12 | 2020-10-12 | Foundation pit supporting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011081447.8A CN112195931B (en) | 2020-10-12 | 2020-10-12 | Foundation pit supporting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112195931A CN112195931A (en) | 2021-01-08 |
| CN112195931B true CN112195931B (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011081447.8A Active CN112195931B (en) | 2020-10-12 | 2020-10-12 | Foundation pit supporting system |
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| CN (1) | CN112195931B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4440799B2 (en) * | 2005-02-14 | 2010-03-24 | 鹿島建設株式会社 | Ground excavation method |
| CN201292532Y (en) * | 2008-11-13 | 2009-08-19 | 上海市第五建筑有限公司 | Deep foundation ditch sand protecting device |
| KR101468101B1 (en) * | 2012-11-30 | 2014-12-02 | 쌍용건설 주식회사 | Retaining wall using diagonal reinforcement member |
| CN210507466U (en) * | 2019-08-26 | 2020-05-12 | 中国电建集团贵阳勘测设计研究院有限公司 | Deep-buried foundation pit supporting structure for engineering |
| CN111719566B (en) * | 2020-07-17 | 2021-12-14 | 燕山大学 | Foundation pit supporting device |
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2020
- 2020-10-12 CN CN202011081447.8A patent/CN112195931B/en active Active
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| CN112195931A (en) | 2021-01-08 |
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Address after: 250100 1-2109, Wanhong Plaza, No. 60, Gongye North Road, Licheng District, Jinan City, Shandong Province Applicant after: Shandong Zhonglian Hengxin Engineering Group Co.,Ltd. Address before: 250100 1-2109, Wanhong Plaza, No. 60, Gongye North Road, Licheng District, Jinan City, Shandong Province Applicant before: Jinan Zhonglian Shenji Engineering Co.,Ltd. |
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Denomination of invention: Foundation pit support system Effective date of registration: 20220727 Granted publication date: 20210528 Pledgee: Postal Savings Bank of China Limited Jinan Branch Pledgor: Shandong Zhonglian Hengxin Engineering Group Co.,Ltd. Registration number: Y2022980011210 |