CN217758975U - Pile-column integrated vertical supporting steel pipe upright post and foundation pit bottom plate connecting structure - Google Patents
Pile-column integrated vertical supporting steel pipe upright post and foundation pit bottom plate connecting structure Download PDFInfo
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- CN217758975U CN217758975U CN202221514771.9U CN202221514771U CN217758975U CN 217758975 U CN217758975 U CN 217758975U CN 202221514771 U CN202221514771 U CN 202221514771U CN 217758975 U CN217758975 U CN 217758975U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model relates to a vertical supporting steel pipe stand of stake integration and foundation ditch bottom plate joint construction in foundation ditch engineering technical field. The technical scheme is as follows: the steel lining plate is fixed outside the wall at the joint of the steel pipe and the foundation pit bottom plate, the lower part of the steel lining plate is fixedly connected with the annular plate, and the bottom surface steel bar of the foundation pit bottom plate is connected with the steel pipe through the connecting annular plate; a concave construction opening is reserved at the intersection of the top surface of the foundation pit bottom plate and the steel pipe; after the steel pipe is cut off at the construction opening, non-shrinkage concrete is adopted to be filled in the construction opening and the steel pipe at the joint of the construction opening and the foundation pit bottom plate, and the strength of the non-shrinkage concrete is higher than that of the concrete of the foundation pit bottom plate by one grade; and the top surface steel bars of the foundation pit bottom plate blocked by the steel pipes at the construction hole are connected through a steel bar connector. The reliable connection of foundation pit bottom plate reinforcing steel bars and steel pipe stand has been guaranteed to it, has further solved the easy problem that takes place the seepage of groundwater in connected node department.
Description
Technical Field
The utility model belongs to the technical field of foundation ditch engineering technique and specifically relates to a vertical supporting steel pipe stand of pile integration and foundation ditch bottom plate connected node structure in foundation ditch.
Background
Angle steel lattice column is adopted as vertical stand usually in the foundation ditch engineering that sets up interior braced system, and along with the excavation depth of foundation ditch is more and more dark, the number of support tracks increases thereupon, when conventional angle steel lattice column bearing capacity is difficult to satisfy upper portion support and construction landing stage load requirement, available steel pipe replaces angle steel lattice column as vertical stand. No matter angle steel or steel pipes are adopted as vertical columns, the columns are required to be inserted into cast-in-situ bored piles for a certain depth, the vertical supporting system is formed by temporary stand columns and cast-in-situ bored piles together. However, when the cast-in-situ bored pile is constructed, holes easy to collapse and concrete need to be poured underwater, so that the quality of the pile body is difficult to guarantee, the peripheral environmental facilities are also adversely affected, the maintenance time is long, and the application in foundation pit engineering with strict construction period and high environmental protection requirements is greatly limited. On the other hand, when the cast-in-situ bored pile is constructed, a mud retaining wall is required, a large amount of waste mud needs to be discharged in the construction process, the waste mud contains chemical dispersants and various heavy metals, the outward transportation and treatment cost is high, and the development requirements of green ecological city construction cannot be met.
The steel pipe is inserted into the substrate from the ground to a certain depth to form a pile-column integrated vertical supporting system, so that the pile-column integrated vertical supporting system can play the roles of a vertical upright column and an upright column pile simultaneously, the hole forming time of a cast-in-place pile and the underwater maintenance time of pile body concrete are saved, the construction period is shortened, the slurry discharge is reduced, and the requirement of sustainable development of foundation pit engineering is met. However, the steel pipe needs to penetrate through the foundation pit base plate, and the steel bars cannot penetrate through the foundation pit base plate due to the obstruction of the steel pipe. Meanwhile, the steel pipe upright post needs to be cut off near the surface of the foundation pit bottom plate after the support is removed, and the water stopping effect at the intersection node of the steel pipe upright post and the foundation pit bottom plate is guaranteed to be of great importance in soft soil areas with abundant underground water, particularly foundation pit engineering with a confined aquifer at the base.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a vertical supporting steel pipe stand of stake integration and foundation ditch bottom plate joint construction has guaranteed the reliable connection of foundation ditch bottom plate reinforcing bar and steel pipe stand, has further solved the problem that the seepage easily takes place for the groundwater of hookup point department.
The technical scheme of the utility model is that: a pile-column integrated vertical supporting steel pipe upright post and foundation pit bottom plate connecting structure is characterized in that a steel lining plate is fixed outside the wall of the joint of a steel pipe and a foundation pit bottom plate, the lower part of the steel lining plate is fixedly connected with a ring plate, and bottom surface steel bars of the foundation pit bottom plate are connected with the steel pipe through the connecting ring plate; a concave construction opening is reserved at the intersection of the top surface of the foundation pit bottom plate and the steel pipe; after the steel pipe is cut off at the construction opening, non-shrinkage concrete is adopted to be filled in the construction opening and the steel pipe at the joint of the construction opening and the foundation pit bottom plate, and the strength of the non-shrinkage concrete is higher than that of the concrete of the foundation pit bottom plate by one grade; and the top surface reinforcing steel bars blocked by the steel pipes at the construction hole of the foundation pit bottom plate are connected through a reinforcing steel bar connector.
Based on the technical characteristics: the steel lining plate is formed by splicing a plurality of arc-shaped steel plates.
Based on the technical characteristics: the stud is welded outside the steel lining plate.
Based on the technical characteristics: and an outer side water stop steel ring plate is welded on the outer side of the steel lining plate.
Based on the technical characteristics: when the thickness of the foundation pit bottom plate is less than or equal to 1m, the outer water stop steel ring plate in the range of the foundation pit bottom plate is a single plate; and when the thickness of the foundation pit bottom plate is larger than 1m, the outer side water stop steel ring plate in the range of the foundation pit bottom plate is divided into two channels.
Based on the technical characteristics: a stiffening plate is arranged between the connecting ring plate and the steel lining plate.
Based on the technical characteristics: the width of the opening of the construction opening meets the requirement that the distance of the expanded steel pipe is more than or equal to 500mm.
Based on the technical characteristics: and welding a circular water stop steel plate on the inner side of the cut steel pipe.
Based on the technical characteristics: the round water stop steel plate is positioned at the position 50mm to 100mm below the section of the steel pipe.
The technical solution of the utility model is mainly divided into two parts. The first part is that a foundation pit bottom plate is connected with a steel pipe, and a top surface steel bar of the foundation pit bottom plate blocked by the steel pipe is connected by a connector after the steel pipe is blocked; the bottom surface steel bar is connected with the steel pipe through a connecting ring plate welded on the steel lining plate on the outer wall of the steel pipe; and meanwhile, the stud is welded on the outer side of the steel lining plate, so that vertical force transmission between the steel pipe and the foundation pit bottom plate is ensured. The second part is a waterproof structure at the joint, and after the foundation pit is excavated to the elevation of a substrate, an annular outer side water stop steel annular plate is welded on a steel lining plate of the outer wall of the steel pipe within the range of the bottom plate of the foundation pit, so that a seepage path along the outer wall of the steel pipe is blocked; after the steel pipe is cut off, soil in the steel pipe is removed to the elevation of a substrate, non-shrinkage concrete with the strength higher than that of a foundation pit bottom plate by one level is poured in the steel pipe, and a circular water stop steel plate is arranged on the inner wall of the steel pipe below the cut surface to block a seepage channel along the inner wall of the steel pipe.
By adopting the technical scheme, the connection quality of the steel bars of the foundation pit bottom plate and the reliability of vertical force transmission between the steel pipes and the foundation pit bottom plate are ensured by arranging the connector, the stiffening plates, the studs and the like; the water stop steel plates are arranged on the outer wall of the steel pipe and the inner wall of the steel pipe under the intercepting surface respectively, so that a seepage path along the wall of the steel pipe is blocked, and the seepage risk is greatly reduced.
Drawings
Fig. 1 is a schematic view of the pile-column integrated vertical supporting system in the embodiment of the present invention.
Fig. 2 is the utility model discloses well steel pipe post is connected with the foundation ditch bottom plate and is constructed the schematic diagram with waterproof node.
Fig. 3 isbase:Sub>A schematic sectional view ofbase:Sub>A-base:Sub>A in fig. 2 according to the present invention.
The reference numerals in the figures are meant to be:
the concrete foundation comprises 1 steel pipe, 2 steel bar connectors, 3 outer side water stop steel ring plates, 4 studs, 5 steel lining plates, 6 stiffening plates, 7 connecting ring plates, 8 bottom steel bars, 9 circular water stop steel plates, 10 fillet welds, 11 concrete surface roughening, 12 non-shrinkage concrete, 13 plug welds, 14 support systems, 15 foundation pit bottom plates and 16 construction openings.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the attached drawings. These embodiments are only for illustrating the present invention and are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Fig. 1 is the utility model discloses stake post integration vertical supporting system schematic diagram in the example, steel pipe 1 both had been regarded as foundation ditch vertical supporting stand, was used as vertical supporting stand pile again for bear the vertical load of upper portion landing stage and support system 14. The upper part A of the steel pipe 1 above the foundation pit bottom plate 15 is used as a vertical supporting upright post, and the lower part B of the steel pipe 1 below the foundation pit bottom plate 15 is used as a vertical supporting upright post pile.
As shown in fig. 2 and 3, in the connection structure of the pile-column integrated vertical supporting steel pipe column and the foundation pit bottom plate, the steel lining plate 5 is fixed outside the wall of the connection part of the steel pipe 1 and the foundation pit bottom plate 15, and the steel lining plate 5 can be formed by splicing a plurality of arc-shaped steel plates. The stud 4 is welded outside the steel lining plate 5.
The lower part of the steel lining plate 5 is fixedly connected with a ring plate 7, and a stiffening plate 6 is arranged between the connecting ring plate 7 and the steel lining plate 5. The bottom surface steel bar 8 of the foundation pit bottom plate 15 is connected with the steel pipe 1 through the connecting ring plate 7; a concave construction opening 16 is reserved at the intersection of the top surface of the foundation pit bottom plate 15 and the steel pipe 1, and the width of the opening of the construction opening 16 meets the requirement that the distance of the expanded steel pipe 1 is not less than 500mm, so that the steel pipe 1 can be conveniently cut off for construction and the top surface of the foundation pit bottom plate 15 can be conveniently connected through steel bars. And cutting off the steel pipe 1 at the construction hole 16 after the bottom plate is finished. The construction hole 16 is filled with non-shrinkage concrete 12. And non-shrinkage concrete 12 is adopted to fill the steel pipe 1 at the joint of the steel pipe and the foundation pit bottom plate 15. The non-shrink concrete 12 has a strength one grade higher than that of the foundation pit floor 15.
The steel bars blocked by the steel pipes 1 on the top surface of the foundation pit bottom plate 15 are connected through a steel bar connector 2.
The cut steel pipe 1 is welded with a circular water stop steel plate 9. The round water stop steel plate 9 is positioned at the position 50mm to 100mm below the section surface of the steel pipe 1.
And the outer side of the steel lining plate 5 is welded with an outer side water stop steel ring plate 3. When the thickness H of the foundation pit bottom plate 15 is less than or equal to 1m, the outer water stop steel ring plate 3 in the range of the foundation pit bottom plate 15 is one path; when the thickness H of the foundation pit bottom plate 15 is larger than 1m, the outer side water stop steel ring plate 3 in the range of the foundation pit bottom plate 15 is divided into two channels.
The utility model discloses a construction method does: as shown in figure 2, before the steel pipe 1 is constructed, a plurality of arc-shaped steel plates are welded in the elevation range of the foundation pit bottom plate 15 to form a steel lining plate 5, and a stud 4 is welded outside the steel lining plate 5. After the foundation pit is excavated to the elevation of the base, the annular plate 7 and the stiffening plate 6 are welded on the steel liner plate 5 according to the elevation of the bottom surface steel bar 8 of the bottom plate 15 of the foundation pit, and the bottom surface steel bar 8 and the connecting annular plate 7 are welded. One or two outer side water stop steel ring plates 3 are arranged on the steel lining plate 5 according to the thickness H of the foundation pit bottom plate 15, and the outer side water stop steel ring plates 3 of the steel pipe 1 can be divided into four blocks. As shown in FIG. 3, a 20mm gap is reserved between adjacent splice plates forming the outer water stop steel ring plate 3 and is connected by a plug weld 13. When the foundation pit bottom plate 15 is constructed, a construction opening 16 is reserved on the periphery of the steel pipe 1 on the top surface of the foundation pit bottom plate 15, so that the steel pipe 1 can be conveniently cut off for construction.
After the foundation pit support is dismantled and the basement structure construction is completed, cut off steel pipe 1 in the construction entrance to a cave 16 reserved on the top surface of foundation pit bottom plate 15, clear away the soil body in steel pipe 1 to the bed course elevation of foundation pit bottom plate, pour in the steel pipe than foundation pit bottom plate 15 intensity one grade of non-shrink concrete 12 to cut off 50mm to 100mm under the section, and set up one round stagnant water steel sheet 9 at the steel pipe 1 inboard, adopt fillet weld 10 to be connected with steel pipe 1 inner wall. The top surface reinforcing steel bars of the foundation pit bottom plate blocked by the steel pipes 1 are connected through a reinforcing steel bar connector 2, and after the concrete surface in the construction opening 16 area is roughened, the construction opening 16 is sealed by non-shrinkage concrete 12 with the strength higher than that of the foundation pit bottom plate 15 by one grade.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides a vertical supporting steel pipe stand of stake integration and foundation ditch bottom plate joint construction which characterized in that: the steel lining plate (5) is fixed outside the wall of the joint of the steel pipe (1) and the foundation pit bottom plate (15), the lower part of the steel lining plate (5) is fixedly connected with a ring plate (7), and bottom surface steel bars of the foundation pit bottom plate (15) are connected with the steel pipe (1) through the connecting ring plate (7); a concave construction opening (16) is reserved at the intersection of the top surface of the foundation pit bottom plate (15) and the steel pipe (1); after the steel pipe (1) is cut off at the construction opening (16), non-shrinkage concrete (12) is filled in the construction opening (16) and the steel pipe (1) at the joint of the construction opening and the foundation pit bottom plate (15), and the strength of the non-shrinkage concrete (12) is higher than that of the foundation pit bottom plate (15) by one grade; and the top surface steel bars blocked by the steel pipes (1) at the construction openings (16) of the foundation pit bottom plates (15) are connected through steel bar connectors (2).
2. The pile integrated vertical supporting steel pipe column and foundation pit bottom plate connection structure of claim 1, characterized in that: the steel lining plate (5) is formed by splicing a plurality of arc-shaped steel plates.
3. The pile-column integrated vertical supporting steel pipe column and foundation pit bottom plate connection structure of claim 1, characterized in that: and the stud (4) is welded outside the steel lining plate (5).
4. The pile-column integrated vertical supporting steel pipe column and foundation pit bottom plate connection structure of claim 1, characterized in that: and an outer side water stop steel ring plate (3) is welded on the outer side of the steel lining plate (5).
5. The pile integrated vertical supporting steel pipe column and foundation pit bottom plate connection structure of claim 4, characterized in that: when the thickness of the foundation pit bottom plate (15) is less than or equal to 1m, the outer side water stop steel ring plates (3) in the range of the foundation pit bottom plate (15) are one; and when the thickness of the foundation pit bottom plate (15) is larger than 1m, the outer side water stop steel ring plate (3) in the range of the foundation pit bottom plate (15) is divided into two parts.
6. The pile-column integrated vertical supporting steel pipe column and foundation pit bottom plate connection structure of claim 1, characterized in that: and a stiffening plate (6) is arranged between the connecting ring plate (7) and the steel lining plate (5).
7. The pile integrated vertical supporting steel pipe column and foundation pit bottom plate connection structure of claim 1, characterized in that: the width of the construction hole (16) meets the requirement that the distance of the expanded steel pipe (1) is more than or equal to 500mm.
8. The pile-column integrated vertical supporting steel pipe column and foundation pit bottom plate connection structure of claim 1, characterized in that: and welding a circular water stop steel plate (9) on the inner side of the cut steel pipe (1).
9. The pile integrated vertical supporting steel pipe column and foundation pit bottom plate connection structure of claim 8, characterized in that: the round water stop steel plate (9) is located at a position 50mm to 100mm below the section of the steel pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221514771.9U CN217758975U (en) | 2022-06-17 | 2022-06-17 | Pile-column integrated vertical supporting steel pipe upright post and foundation pit bottom plate connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221514771.9U CN217758975U (en) | 2022-06-17 | 2022-06-17 | Pile-column integrated vertical supporting steel pipe upright post and foundation pit bottom plate connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217758975U true CN217758975U (en) | 2022-11-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221514771.9U Active CN217758975U (en) | 2022-06-17 | 2022-06-17 | Pile-column integrated vertical supporting steel pipe upright post and foundation pit bottom plate connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217758975U (en) |
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2022
- 2022-06-17 CN CN202221514771.9U patent/CN217758975U/en active Active
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