CN219491015U - Support column underpinning system for complex deep foundation pit support - Google Patents
Support column underpinning system for complex deep foundation pit support Download PDFInfo
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- CN219491015U CN219491015U CN202320570208.1U CN202320570208U CN219491015U CN 219491015 U CN219491015 U CN 219491015U CN 202320570208 U CN202320570208 U CN 202320570208U CN 219491015 U CN219491015 U CN 219491015U
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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Abstract
The utility model relates to a complex deep foundation pit supporting and supporting upright post underpinning system, which comprises the following steps: the device comprises a ground connecting wall, a support, a U-shaped anchor ear, a underpinning upright post, an upright post, a connecting annular plate, steel bars, steel pipes and soil body; the underpinning upright post comprises a plurality of sections, one section is arranged between two adjacent supports, and one section of the underpinning upright post is also arranged between the support with the lowest elevation and the connecting ring plate. The beneficial effects of the utility model are as follows: the stand-by column between each support is used for replacing the stand-by column, the bottom foundation of the stand-by column is fixed by inserting steel pipes and connecting ring plates, the top structure of the steel pipes is welded into a whole through steel bars, grouting bodies are poured in soil, and the bearing capacity is high; the underpinning upright post and the support are connected quickly by adopting the U-shaped anchor ear, so that the operation is convenient, and the structure is firm.
Description
Technical Field
The utility model belongs to the technical field of underground engineering, and particularly relates to a complex deep foundation pit supporting and supporting column underpinning system.
Background
Along with the development of economy and the progress of society, the construction level of the construction engineering in China is continuously improved, the difficulty of foundation construction of related engineering is also increased, and in order to ensure smooth construction of complex deep foundation pits, a supporting structure is usually adopted in the foundation pits, and a ground continuous wall and supporting support are generally adopted in the complex deep foundation pit supporting mode. In engineering construction, in order to shorten the construction period and reduce the construction cost, sometimes when the structural drawing of the main body of a building is not completely determined, a foundation pit supporting project of a complex deep foundation pit is constructed in advance, and after the complex deep foundation pit is excavated in place, structural pile foundations or beam columns of a main body of an engineering project can be adjusted for various reasons, so that the constructed supporting columns and piles collide with the main pile foundations or beam columns. Therefore, it is important to solve the problem of the collision of the column with the main body.
In summary, it is important to find a complicated deep foundation pit support stand column underpinning system with reliable quality, simple operation and high safety aiming at the underpinning construction of the support stand column in the foundation pit.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides a complex deep foundation pit supporting and supporting upright post underpinning system.
This kind of complicated deep basal pit support stand underpinning system includes: the device comprises a ground connecting wall, a support, a U-shaped anchor ear, a underpinning upright post, an upright post, a connecting annular plate, steel bars, steel pipes and soil body;
the plurality of supports are horizontally arranged between the ground continuous walls, the bottom ends of the upright posts extend into soil, and the upright posts comprise upright posts to be underpinned; the underpinning upright post comprises a plurality of sections, one section is arranged between two adjacent supports, a steel pipe is arranged in the soil body, grouting holes are formed in the steel pipe, and grouting bodies are poured in the soil body outside the grouting holes; a connecting ring plate is arranged at the top end of the steel pipe, and a section of the underpinning upright post is also arranged between the support with the lowest elevation and the connecting ring plate; the connecting ring plate is provided with a concrete grouting port;
two inverted-U-shaped anchor clamps are symmetrically clamped on each support, inverted-U-shaped steel column bases are arranged at two ends of the underpinning column section arranged between the supports, inverted-U-shaped steel column bases are arranged at the top end of the underpinning column section arranged between the supports and the connecting annular plate, and expanded inverted-U-shaped steel column bases are arranged at the bottom end of the underpinning column section; the U-shaped steel column base is connected with two U-shaped hoops on the support, and the enlarged U-shaped steel column base is connected with the connecting annular plate.
As preferable: the center of the connecting ring plate is provided with a concrete grouting opening, and the connecting ring plate is provided with a steel sleeve and a threaded rod around the concrete grouting opening; the top of the steel pipe is provided with a thread section, and the bottom of the steel pipe is provided with a tip plug; the steel pipes are divided into three groups, namely a first group of steel pipes, a second group of steel pipes and a third group of steel pipes, and grouting holes of each group of steel pipes are different in height; each group of steel pipes comprises two identical steel pipes, the two steel pipes in each group of steel pipes are symmetrically inserted below the connecting ring plate through steel sleeves, and a plurality of steel bars are welded on the top structure of the steel pipes.
As preferable: the two U-shaped anchor clamps fixed on the same support are connected through a counter-pulling screw rod, and a channel steel base is arranged on each U-shaped anchor clamp; the U-shaped steel column base is connected with a channel steel base on the U-shaped anchor ear through a high-strength bolt, and a steel backing plate is further arranged on the inner wall of the lower surface of the U-shaped anchor ear connecting support; the enlarged U-shaped steel column base comprises an ear plate, a threaded rod is arranged on the connecting ring plate, and the threaded rod is fixedly connected with the ear plate of the enlarged U-shaped steel column base.
As preferable: the size of the U-shaped steel column base is matched with that of the underpinning column, and the inner wall space of the U-shaped steel column base is larger than the length of the counter-pulling screw rod; the size of the expanded U-shaped steel column base is matched with the connecting ring plate, and the inner wall interval of the expanded U-shaped steel column base is larger than the distance between the steel sleeves.
As preferable: the several hoops and the connecting ring plates connected to each support are located on the same vertical axis, and the segments of the underpinning upright are arranged on the same vertical axis.
The beneficial effects of the utility model are as follows:
1) According to the complex deep foundation pit supporting stand column underpinning system, the stand column to be underpinned is replaced by the underpinned stand column among the supporting columns, the bottom foundation of the underpinned stand column is fixedly inserted through the steel pipe and the connecting ring plate, the top structure of the steel pipe is welded into a whole through the steel bars, grouting bodies are poured in soil, and the bearing capacity is high.
2) The underpinning upright post and the support are quickly connected by adopting the inverted U-shaped anchor ear, so that the operation is convenient, and the structure is firm.
Drawings
FIG. 1 is a schematic cross-sectional view of a complex deep foundation pit support column underpinning architecture;
FIG. 2 is a schematic cross-sectional view of a foundation connection portion of a underpinning column;
FIG. 3 is a schematic plan view of a connecting ring plate;
FIG. 4 is a schematic view of a three-dimensional bulk sample of a connecting ring plate;
FIG. 5 is a schematic view of a steel pipe bulk sample;
FIG. 6 is a schematic plan view of a steel pipe arrangement;
FIG. 7 is a schematic view of a cross section of a tee anchor and support;
FIG. 8 is a schematic view of a tee anchor and support fixture elevation;
FIG. 9 is a schematic diagram of a underpinning column layout;
FIG. 10 is a schematic diagram of a large sample of underpinning column foundation connection segments;
FIG. 11 is a schematic plan view of a bracket column and a section steel column foot;
in the figure: the concrete grouting device comprises a ground connecting wall 1, a support 2, a stand column 3 to be underpinned, a U-shaped anchor ear 4, an underpinned stand column 5, a stand column 6, a threaded rod 7, a connecting ring plate 8, a reinforcing steel bar 9, a grouting body 10, a steel pipe 11, a soil body 12, an ear plate 13, a grouting hole 14, a concrete grouting opening 15, a steel sleeve 16, a threaded section 17, a first group of steel pipes 18, a second group of steel pipes 19, a third group of steel pipes 20, a high-strength bolt 21, a U-shaped steel column base 22, a channel steel base 23, a steel base plate 24, a counter-pulling screw 25 and an enlarged U-shaped steel column base 26.
Detailed Description
The utility model is further described below with reference to examples. The following examples are presented only to aid in the understanding of the utility model. It should be noted that it will be apparent to those skilled in the art that modifications can be made to the present utility model without departing from the principles of the utility model, and such modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.
As an embodiment, as shown in fig. 1 to 11, a complex deep foundation pit supporting support column underpinning system includes: the wall comprises a ground connecting wall 1, a support 2, a U-shaped anchor ear 4, a underpinning upright post 5, an upright post 6, a connecting annular plate 8, reinforcing steel bars 9, a steel pipe 11 and a soil body 12;
as shown in fig. 1 and 2, a plurality of supports 2 are horizontally arranged between the ground continuous walls 1, the bottom ends of the upright posts 6 extend into soil 12, and the upright posts 6 comprise upright posts 3 to be underpinned; the underpinning upright post 5 comprises a plurality of segments, one segment is arranged between two adjacent supports 2, a steel pipe 11 is arranged in a soil body 12, grouting holes 14 are formed in the steel pipe 11, the depth of the soil body 12 around the excavated steel pipe 11 is 0.8-1.1 m, grouting bodies 10 are poured in the soil body outside the grouting holes 14, and the bearing capacity of the foundation of the underpinning upright post 5 is improved; the top end of the steel pipe 11 is provided with a connecting annular plate 8, and a section of the underpinning upright post 5 is also arranged between the support 2 with the lowest elevation and the connecting annular plate 8.
As shown in fig. 3 to 6, a concrete grouting opening 15 is arranged in the center of the connecting ring plate 8, and six steel sleeves 16 and four threaded rods 7 are arranged on the connecting ring plate 8 around the concrete grouting opening 15; the top of the steel pipe 11 is provided with a thread section 17, and the bottom is provided with a tip plug 16; the steel pipes 11 are divided into three groups, namely a first group of steel pipes 18, a second group of steel pipes 19 and a third group of steel pipes 20, and the grouting holes 14 of each group of steel pipes 11 are different in height, so that grouting bodies 10 are formed in soil bodies 12 at different heights; each group of steel pipes 11 comprises two identical steel pipes 11, the two steel pipes 11 in each group of steel pipes 11 are symmetrically inserted below the connecting ring plate 8 through the steel sleeve 16, a plurality of steel bars 9 are welded on the top structure of the steel pipes 11, so that the steel pipes 11, the steel sleeve 16 and the connecting ring plate 8 are welded into a whole, the supporting force of the foundation of the underpinning upright post 5 is improved, and the upright post 3 to be underpinned can be removed after the installation of the underpinning upright post 5 is completed.
As shown in fig. 7 and 8, two horizontal hoops 4 are symmetrically clamped on each support 2, the clamping width of each horizontal hoop 4 is 3 cm-5 cm higher than the height of each support 2, the horizontal hoops 4 are guaranteed to be rapidly clamped on the supports 2, the inner wall of the lower surface of each horizontal hoop 4 connected with the supports 2 is also provided with a steel backing plate 24, each horizontal hoop 4 and the connecting ring plate 8 connected with each support 2 are positioned on the same vertical axis, and a plurality of sections of the underpinning upright posts 5 are arranged on the same vertical axis to form a vertical supporting effect capable of replacing the upright post 3 to be underpinned.
As shown in fig. 9 and 11, both ends of the segment of the underpinning upright 5 arranged between the supports 2 are respectively provided with a U-shaped steel column base 22, the top end of the segment of the underpinning upright 5 arranged between the supports 2 and the connecting annular plate 8 is provided with a U-shaped steel column base 22, and the bottom end is provided with an enlarged U-shaped steel column base 26; the U-shaped steel column base 22 is connected with two U-shaped hoops 4 on the support 2, and the enlarged U-shaped steel column base 26 is connected with the connecting ring plate 8.
As shown in fig. 2 and 7, two horizontal anchor ears 4 fixed on the same support 2 are connected through a counter-pulling screw 25, and a channel steel base 23 is arranged on each horizontal anchor ear 4; the U-shaped steel column base 22 is connected with a channel steel base 23 on the U-shaped anchor ear 4 through a high-strength bolt 21; the enlarged U-shaped steel column base 26 comprises an ear plate 13, a threaded rod 7 is arranged on the connecting ring plate 8, and the threaded rod 7 is fixedly connected with the ear plate 13 of the enlarged U-shaped steel column base 26.
The size of the U-shaped steel column base 22 is matched with that of the underpinning upright column 5, and the inner wall space of the U-shaped steel column base 22 is larger than the length of the opposite-pulling screw rod 25; the enlarged size of the steel column feet 26 matches with the connecting ring plate 8, and the inner wall spacing of the enlarged steel column feet 26 is larger than the distance between the steel sleeves 16.
Claims (5)
1. A complicated deep basal pit support stand underpinning system, its characterized in that includes: the ground connecting wall (1), the support (2), the U-shaped anchor ear (4), the underpinning upright post (5), the upright post (6), the connecting annular plate (8), the steel bar (9), the steel pipe (11) and the soil body (12);
the plurality of supports (2) are horizontally arranged between the ground continuous walls (1), the bottom ends of the stand columns (6) extend into soil bodies (12), and the stand columns (6) comprise stand columns (3) to be underpinned; the underpinning upright post (5) comprises a plurality of sections, one section is arranged between two adjacent supports (2), a steel pipe (11) is arranged in a soil body (12), grouting holes (14) are formed in the steel pipe (11), and grouting bodies (10) are poured in the soil body outside the grouting holes (14); a connecting annular plate (8) is arranged at the top end of the steel pipe (11), and a section of the underpinning upright post (5) is also arranged between the support (2) with the lowest elevation and the connecting annular plate (8); a concrete grouting opening (15) is arranged on the connecting annular plate (8);
two U-shaped anchor clamps (4) are symmetrically clamped on each support (2), two U-shaped steel column bases (22) are respectively arranged at two ends of a section of the underpinning column (5) arranged between the supports (2), the U-shaped steel column bases (22) are arranged at the top ends of the sections of the underpinning column (5) arranged between the supports (2) and the connecting annular plate (8), and an enlarged U-shaped steel column base (26) is arranged at the bottom ends of the sections of the underpinning column (5); the U-shaped steel column base (22) is connected with two U-shaped anchor clamps (4) on the support (2), and the enlarged U-shaped steel column base (26) is connected with the connecting annular plate (8).
2. The complex deep foundation pit support stand underpinning system of claim 1, wherein: a concrete grouting opening (15) is arranged in the center of the connecting annular plate (8), and a steel sleeve (16) and a threaded rod (7) are arranged on the connecting annular plate (8) around the concrete grouting opening (15); the top of the steel pipe (11) is provided with a thread section (17), and the bottom is provided with a tip plug; the steel pipes (11) are divided into three groups, namely a first group of steel pipes (18), a second group of steel pipes (19) and a third group of steel pipes (20), and grouting holes (14) of each group of steel pipes (11) are different in height; each group of steel pipes (11) comprises two identical steel pipes (11), the two steel pipes (11) in each group of steel pipes (11) are symmetrically inserted below the connecting annular plate (8) through the steel sleeve (16), and a plurality of steel bars (9) are welded on the top structure of the steel pipes (11).
3. The complex deep foundation pit support stand underpinning system of claim 1, wherein: two U-shaped anchor clamps (4) fixed on the same support (2) are connected through a counter-pulling screw (25), and a channel steel base (23) is arranged on each U-shaped anchor clamp (4); the U-shaped steel column base (22) is connected with a channel steel base (23) on the U-shaped anchor ear (4) through a high-strength bolt (21), and a steel backing plate (24) is further arranged on the inner wall of the lower surface of the U-shaped anchor ear (4) connected with the support (2); the enlarged U-shaped steel column base (26) comprises an ear plate (13), a threaded rod (7) is arranged on the connecting ring plate (8), and the threaded rod (7) is fixedly connected with the ear plate (13) of the enlarged U-shaped steel column base (26).
4. A complex deep foundation pit support stand underpinning system as claimed in claim 3, wherein: the size of the U-shaped steel column base (22) is matched with that of the underpinning upright column (5), and the inner wall space of the U-shaped steel column base (22) is larger than the length of the opposite-pulling screw rod (25); the size of the enlarged U-shaped steel column base (26) is matched with the connecting annular plate (8), and the inner wall spacing of the enlarged U-shaped steel column base (26) is larger than the distance between the steel sleeves (16).
5. The complex deep foundation pit support stand underpinning system of claim 1, wherein: the several-shaped hoops (4) and the connecting ring plates (8) which are connected on each support (2) are positioned on the same vertical axis, and the several sections of the underpinning upright posts (5) are arranged on the same vertical axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320570208.1U CN219491015U (en) | 2023-03-21 | 2023-03-21 | Support column underpinning system for complex deep foundation pit support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320570208.1U CN219491015U (en) | 2023-03-21 | 2023-03-21 | Support column underpinning system for complex deep foundation pit support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219491015U true CN219491015U (en) | 2023-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320570208.1U Active CN219491015U (en) | 2023-03-21 | 2023-03-21 | Support column underpinning system for complex deep foundation pit support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219491015U (en) |
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2023
- 2023-03-21 CN CN202320570208.1U patent/CN219491015U/en active Active
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