CN111794244A - Circular foundation pit supporting structure and using method - Google Patents
Circular foundation pit supporting structure and using method Download PDFInfo
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- CN111794244A CN111794244A CN202010658416.8A CN202010658416A CN111794244A CN 111794244 A CN111794244 A CN 111794244A CN 202010658416 A CN202010658416 A CN 202010658416A CN 111794244 A CN111794244 A CN 111794244A
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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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Abstract
The invention provides a circular foundation pit supporting structure and a using method thereof, wherein the circular foundation pit supporting structure comprises a plurality of arc-shaped protection plate structures, and the adjacent arc-shaped protection plate structures are linked into a cylinder shape capable of being folded inwards through hinges; the two adjacent arc-shaped guard plate structures can rotate relatively for a certain angle, and the whole supporting structure can be folded into a petal shape; hooks are respectively fixed on the inner side wall of each arc-shaped guard plate structure, and round holes are processed at different heights of the arc-shaped guard plate structures; adjacent arc backplate structure is fixed through the buckle design after strutting to make whole supporting construction be stable cylindrical. This structure can be used for carrying out effectual strut to the foundation ditch excavation in-process, and folding assembling that moreover can be convenient carries out convenient installation and arrangement in order to be used for it, replaces traditional concreting to carry out the construction technology of foundation ditch dado.
Description
Technical Field
The invention relates to the technical field of supporting structures, in particular to a circular foundation pit supporting structure and a using method thereof.
Background
The safe and quick excavation of the foundation pit is a precondition for rapidly carrying out work such as field erection of an electric power tower, vertical rods in line construction, bridge foundation erection and the like. Construction has certain requirement to the foundation ditch degree of depth, needs foundation ditch supporting construction to stabilize the foundation ditch of digging and establishing at the foundation ditch digging and establishing the in-process to guarantee constructor's safety and the integrity of foundation ditch, and then continue deepening digging of foundation ditch and establish. At present, the mode of smearing concrete on the foundation pit wall is still adopted in the aspect of a foundation pit supporting structure, the construction time is greatly prolonged, and therefore a circular foundation pit supporting structure is designed for solving the problems.
Disclosure of Invention
The invention mainly aims to provide a circular foundation pit supporting structure and a using method thereof, the structure can be used for effectively supporting a foundation pit in the process of excavating the foundation pit, can be conveniently folded and assembled for conveniently installing and arranging the foundation pit, replaces the traditional construction process of pouring concrete for carrying out foundation pit wall protection, improves the construction efficiency, shortens the construction period and reduces the construction cost.
In order to achieve the technical features, the invention is realized as follows: a circular foundation pit supporting structure comprises a plurality of arc-shaped protection plate structures, wherein the adjacent arc-shaped protection plate structures are connected into a cylinder shape capable of being folded inwards through hinges; the two adjacent arc-shaped guard plate structures can rotate relatively for a certain angle, and the whole supporting structure can be folded into a petal shape; hooks are respectively fixed on the inner side wall of each arc-shaped guard plate structure, and round holes are processed at different heights of the arc-shaped guard plate structures; adjacent arc backplate structure is fixed through the buckle design after strutting to make whole supporting construction be stable cylindrical.
The arc-shaped protection plate structure comprises an arc-shaped plate, hinge mounting grooves are symmetrically processed on the end surfaces of two sides of the arc-shaped plate respectively, and the hinge mounting grooves are matched with hinges; the buckle fixing columns are symmetrically fixed on the arc inner side walls of the arc plates, and the buckle fixing columns between two adjacent arc plates are fixedly connected through buckles; and positioning bulges matched with the inner side wall of the foundation pit are uniformly distributed on the arc outer side wall of the arc plate.
The buckle comprises an arc-shaped clamping plate, a first clamping groove and a second clamping groove are formed in the side wall of the bottom of the arc-shaped clamping plate, and the first clamping groove and the second clamping groove are respectively matched with buckle fixing columns on two adjacent arc-shaped protection plate structures; and nuts are fixed on the buckle fixing columns and lock and fix the arc-shaped clamping plates.
The use method of the circular foundation pit supporting structure for foundation pit supporting comprises the following steps:
mounting a supporting structure:
firstly, excavating a primary foundation pit;
step two, when the primary foundation pit is dug to a certain depth, folding the support structure in a folded state at the upper part of the foundation pit to reduce the radius of the support structure, hoisting the whole folded support structure through a crane, a steel wire rope and a hook, and placing the support structure into the primary foundation pit;
step three, unfolding the folded supporting structure again inside the foundation pit, enabling the positioning protrusions on the outer wall of the arc-shaped protection plate structure to be in contact with and fixed on the inner side wall of the foundation pit, installing buckles to fix the whole supporting structure, and enabling the fixing rods to penetrate through the round holes to fix the first-layer supporting structure on the side wall of the top of the foundation pit;
step four, continuously excavating the foundation pit, and after excavating to a certain depth, repeating the step two to the step three;
fifthly, installing all supporting structures until the excavation of the whole foundation pit is finished;
after the foundation ditch is stable, when needing to demolish supporting construction, its demolish the process according to from the supreme process of demolising down, its demolish the step and be:
loosening a nut of a supporting structure at the bottommost layer, removing a buckle, and folding an arc-shaped protection plate structure inwards, wherein the whole supporting structure is folded into a petal shape, and the diameter of the supporting structure is smaller than that of the supporting structure after the upper part is rounded;
step two, hanging and connecting a crane and a steel wire rope with the folded supporting structure of the bottom layer, starting the crane, and hanging the supporting structure of the bottom layer out of the foundation pit;
step three, after the last supporting structure is removed, repeating the step one to the step two;
and step four, until all supporting structures in the whole foundation pit are completely dismantled and taken out.
The invention has the following beneficial effects:
1. the invention provides a circular foundation pit supporting structure and a using method thereof, which comprehensively change the phenomena of overlong excavation time of a circular foundation pit and unstable foundation pit wall. The foundation pit wall can be continuously excavated after cement is coated on the foundation pit wall and the cement is solidified, the cement is solidified within one or two days, and the supporting structure can be continuously excavated only after being installed, so that the construction period is greatly shortened.
2. According to the invention, due to the fact that the arc plates are connected through the hinges, the supporting structure assembly cannot be disassembled to cause safety accidents, the well-installed assembly arc plates are fixed through the buckles, the supporting structure strength is far higher than the pressure of the foundation pit wall on the supporting structure, the situation of foundation pit wall collapse is greatly avoided, the arc-shaped protection plate structure is fixed on the foundation pit wall through the fixing rods, the friction force between the arc plates and the foundation pit wall is increased through the positioning protrusions on the outer surfaces of the arc plates, the supporting structure cannot slide down integrally, and the construction safety is greatly improved.
3. In actual work, the invention has the advantages of simple use and operation, obvious effect, high safety, small overall abrasion of the supporting structure and repeated use.
Drawings
The invention is further illustrated by the following figures and examples.
Figure 1 is a first perspective three-dimensional view of the support structure of the present invention after deployment.
Figure 2 is a second perspective three-dimensional view of the support structure of the present invention after deployment.
FIG. 3 is a first perspective three-dimensional view of the curved shield structure of the present invention.
FIG. 4 is a second perspective three-dimensional view of the curved shield structure of the present invention.
FIG. 5 is a first perspective three-dimensional view of the buckle of the present invention.
FIG. 6 is a second perspective three-dimensional view of the buckle of the present invention.
Figure 7 is a view of the supporting structure of the invention in a partially folded state.
Figure 8 is a first perspective three-dimensional view of the supporting structure of the present invention in a fully collapsed position.
Figure 9 is a three-dimensional view from a second perspective of the supporting structure of the present invention when fully collapsed.
Figure 10 is a first perspective three-dimensional view of the supporting structure of the present invention during hoisting.
Figure 11 is a second perspective three-dimensional view of the supporting structure of the present invention during the lifting process.
Fig. 12 (a) (b) (c) (d) (e) is a step diagram of the installation process of the supporting structure of the present invention.
Fig. 13 (a) (b) (c) (d) is a first stage step diagram of the demolition process of the supporting structure of the present invention.
Fig. 14 (e) (f) (g) (h) is a diagram of the second stage of the demolition process of the supporting structure of the present invention.
Fig. 15 is a three-dimensional view of the demolition of the supporting structure of the present invention.
Fig. 16 is a flow chart of the supporting structure installation process of the present invention.
Fig. 17 is a flowchart of the demolition process of the supporting structure of the present invention.
In the figure: the device comprises an arc-shaped guard plate structure 1, a buckle 2, a hinge 3, a nut 4, a round hole 5, a hook 6, a fixed rod 7 and a steel wire rope 8;
the hinge comprises a hinge mounting groove 101, an arc-shaped plate 102 and a buckle fixing column 103;
a first card slot 201, an arc-shaped card board 202 and a second card slot 203.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1:
referring to fig. 1-11, a circular foundation pit supporting structure comprises a plurality of arc-shaped guard plate structures 1, wherein the adjacent arc-shaped guard plate structures 1 are connected into a cylinder shape capable of being folded inwards through hinges 3; the two adjacent arc-shaped guard plate structures 1 can rotate relatively for a certain angle, and the whole supporting structure can be folded into a petal shape; a hook 6 is respectively fixed on the inner side wall of each arc-shaped guard plate structure 1, and round holes 5 are processed at different heights of the arc-shaped guard plate structures 1; the adjacent arc-shaped protection plate structures 1 are fixed in a shaping mode through the buckles 2 after being unfolded, and the whole supporting structure is made to be in a stable cylindrical shape. The circular foundation pit supporting structure with the structure can be used for supporting the inner side wall of a foundation pit in the process of excavation of the foundation pit, replaces the traditional mode that the foundation pit wall coated with cement can be excavated continuously after the cement is solidified, and the cement solidification takes one or two days.
The supporting structure can be folded by adopting the hinge 3, so that the radius of the supporting structure is effectively reduced, and the supporting structure which can stably pass through the upper layer in the supporting process is ensured. So as to be convenient for hoisting and mounting the steel wire rope from top to bottom or from bottom to top.
Further, the arc-shaped guard plate structure 1 comprises an arc-shaped plate 102, hinge installation grooves 101 are symmetrically processed on two side end faces of the arc-shaped plate 102 respectively, and the hinge installation grooves 101 are matched with the hinges 3; the buckle fixing columns 103 are symmetrically fixed on the arc inner side walls of the arc plates 102, and the buckle fixing columns 103 between two adjacent arc plates 102 are fixedly connected through the buckles 2; and positioning protrusions 104 matched with the inner side wall of the foundation pit are uniformly distributed on the arc outer side wall of the arc plate 102. Can form stable dado board through foretell arc backplate structure 1, and then strut the inner wall of foundation ditch.
Further, the buckle 2 comprises an arc-shaped clamping plate 202, a first clamping groove 201 and a second clamping groove 203 are processed on the side wall of the bottom of the arc-shaped clamping plate 202, and the first clamping groove 201 and the second clamping groove 203 are respectively matched with the buckle fixing columns 103 on two adjacent arc-shaped guard plate structures 1; the nut 4 is fixed on the buckle fixing column 103, and the arc-shaped clamping plate 202 is locked and fixed. The buckle 2 can be used for fixing the supporting structure after being propped open, so that the stability of the structure is ensured.
Example 2:
referring to fig. 12, 15 and 16, the method for using the circular foundation pit supporting structure for supporting the foundation pit comprises the following steps:
mounting a supporting structure:
firstly, excavating a primary foundation pit;
step two, when the primary foundation pit is dug to a certain depth, folding the support structure in a folded state at the upper part of the foundation pit to reduce the radius of the support structure, then hoisting the whole folded support structure through a crane, a steel wire rope 8 and a hook 6, and placing the support structure into the primary foundation pit;
step three, unfolding the folded supporting structure again inside the foundation pit, enabling the positioning protrusions 104 on the outer wall of the arc-shaped protection plate structure 1 to be in contact with and fixed on the inner side wall of the foundation pit, installing the buckles 2 to fix the whole supporting structure, and fixing the primary supporting structure on the side wall of the top of the foundation pit through the fixing rods 7 penetrating through the round holes 5;
step four, continuously excavating the foundation pit, and after excavating to a certain depth, repeating the step two to the step three;
fifthly, installing all supporting structures until the excavation of the whole foundation pit is finished;
example 3:
referring to fig. 13, 14, 15, and 17, when the supporting structure needs to be dismantled after the foundation pit is stabilized, the dismantling process is according to a dismantling process from bottom to top, and the dismantling steps are as follows:
step one, loosening a nut 4 of a supporting structure at the bottommost layer, removing a buckle 2, and folding an arc-shaped protection plate structure 1 inwards, wherein the whole supporting structure is folded into a petal shape, and the diameter of the supporting structure is smaller than that of the supporting structure after the upper part is rounded;
step two, hanging and connecting a crane and a steel wire rope 8 with the folded supporting structure of the bottom layer, starting the crane, and hanging the supporting structure of the bottom layer out of the foundation pit;
step three, after the last supporting structure is removed, repeating the step one to the step two;
and step four, until all supporting structures in the whole foundation pit are completely dismantled and taken out.
Claims (4)
1. The utility model provides a circular foundation ditch supporting construction which characterized in that: the foldable frame comprises a plurality of arc-shaped guard plate structures (1), wherein adjacent arc-shaped guard plate structures (1) are connected into a cylinder shape capable of being folded inwards through hinges (3); the two adjacent arc-shaped guard plate structures (1) can relatively rotate for a certain angle, and the whole supporting structure can be folded into a petal shape; a hook (6) is respectively fixed on the inner side wall of each arc-shaped guard plate structure (1), and round holes (5) are processed at different heights of the arc-shaped guard plate structures (1); the adjacent arc-shaped guard plate structures (1) are fixed in a shaping mode through the buckles (2) after being unfolded, and the whole supporting structure is made to be in a stable cylindrical shape.
2. The circular foundation pit supporting structure according to claim 1, wherein: the arc-shaped guard plate structure (1) comprises an arc-shaped plate (102), hinge mounting grooves (101) are symmetrically processed on the end surfaces of two sides of the arc-shaped plate (102) respectively, and the hinge mounting grooves (101) are matched with the hinges (3); the clamping fixing columns (103) are symmetrically fixed on the arc inner side walls of the arc plates (102), and the clamping fixing columns (103) between two adjacent arc plates (102) are fixedly connected through the clamping buckles (2); and positioning bulges (104) matched with the inner side wall of the foundation pit are uniformly distributed on the arc outer side wall of the arc plate (102).
3. The circular foundation pit supporting structure according to claim 1, wherein: the buckle (2) comprises an arc-shaped clamping plate (202), a first clamping groove (201) and a second clamping groove (203) are formed in the side wall of the bottom of the arc-shaped clamping plate (202), and the first clamping groove (201) and the second clamping groove (203) are respectively matched with buckle fixing columns (103) on two adjacent arc-shaped guard plate structures (1); and a nut (4) is fixed on the buckle fixing column (103) and locks and fixes the arc-shaped clamping plate (202).
4. Use of the circular foundation pit supporting structure according to any one of claims 1-3 for supporting a foundation pit, characterized in that it comprises the following steps:
mounting a supporting structure:
firstly, excavating a primary foundation pit;
step two, when the primary foundation pit is dug to a certain depth, folding the support structure in a folded state at the upper part of the foundation pit to reduce the radius of the support structure, then hoisting the whole folded support structure through a crane, a steel wire rope (8) and a hook (6), and placing the support structure into the primary foundation pit;
step three, the folded supporting structure is unfolded again inside the foundation pit, so that the positioning protrusions (104) on the outer wall of the arc-shaped protection plate structure (1) are in contact with and fixed on the inner side wall of the foundation pit, then the buckles (2) are installed to fix the whole supporting structure, and the fixing rods (7) penetrate through the round holes (5) to fix the first-layer supporting structure on the side wall of the top of the foundation pit;
step four, continuously excavating the foundation pit, and after excavating to a certain depth, repeating the step two to the step three;
fifthly, installing all supporting structures until the excavation of the whole foundation pit is finished;
after the foundation ditch is stable, when needing to demolish supporting construction, its demolish the process according to from the supreme process of demolising down, its demolish the step and be:
step one, loosening a nut (4) of a supporting structure at the bottommost layer, removing a buckle (2), and folding an arc-shaped protection plate structure (1) inwards, wherein the whole supporting structure is folded into a petal shape, and the diameter of the supporting structure is smaller than that of the supporting structure after the upper part is rounded;
step two, a crane and a steel wire rope (8) are adopted to be connected with the folded supporting structure of the bottom layer in a hanging mode, the crane is started, and the supporting structure of the bottom layer is lifted out of the foundation pit;
step three, after the last supporting structure is removed, repeating the step one to the step two;
and step four, until all supporting structures in the whole foundation pit are completely dismantled and taken out.
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| CN202010658416.8A CN111794244B (en) | 2020-07-09 | 2020-07-09 | Circular foundation pit supporting structure and using method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112482396A (en) * | 2020-12-01 | 2021-03-12 | 姜振波 | Mounting method of deep foundation pit assembled steel supporting structure |
| CN113463659A (en) * | 2021-08-16 | 2021-10-01 | 自然资源部第二大地测量队(黑龙江第一测绘工程院) | Foundation pit safety protection device based on frozen soil area survey mark is buried underground |
| CN114263184A (en) * | 2021-09-18 | 2022-04-01 | 中国十九冶集团有限公司 | Foundation pit supporting construction method |
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| CN101418569A (en) * | 2008-11-19 | 2009-04-29 | 兰州南特数码科技股份有限公司 | Optimization complex arch wall combining prefabricated arch leaf, support and major structure |
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| CN112482396A (en) * | 2020-12-01 | 2021-03-12 | 姜振波 | Mounting method of deep foundation pit assembled steel supporting structure |
| CN113463659A (en) * | 2021-08-16 | 2021-10-01 | 自然资源部第二大地测量队(黑龙江第一测绘工程院) | Foundation pit safety protection device based on frozen soil area survey mark is buried underground |
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| CN114263184A (en) * | 2021-09-18 | 2022-04-01 | 中国十九冶集团有限公司 | Foundation pit supporting construction method |
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