CN213773424U - Self-water-stop steel pipe pile foundation pit supporting earth retaining component - Google Patents
Self-water-stop steel pipe pile foundation pit supporting earth retaining component Download PDFInfo
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- CN213773424U CN213773424U CN202022008638.3U CN202022008638U CN213773424U CN 213773424 U CN213773424 U CN 213773424U CN 202022008638 U CN202022008638 U CN 202022008638U CN 213773424 U CN213773424 U CN 213773424U
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Abstract
The utility model relates to a self-sealing steel pipe pile foundation pit supporting retaining member in the foundation pit supporting engineering field, which comprises a steel pipe pile (1), a superposed steel plate water-stop connection part and a steel plate connection and flange connection part, wherein the superposed steel plate water-stop connection part at least comprises three groups of steel plates which are arranged in a superposed manner or partially superposed manner, a middle group of steel plates (2) is connected with one of the adjacent steel pipe piles, two groups of outer group of steel plates (4) positioned at both sides are connected with the other steel pipe pile (1), and the middle group of steel plates (2) are connected with inserting falcon (3), a slot (5) is arranged between the two groups of outer group of steel plates (4), the inserting falcon (3) is inserted into the slot (5), and the flange connection is arranged at the top part or the subsection joint part of the steel pipe pile (1), the utility model discloses a pile seam seepage path is increased by the steel plate superposition, construction deviation is controlled by soil pressure acting on the superposed steel plates, and the joint of the adjacent piles is controlled to be minimum, the construction speed is high, the quality is reliable, and the manufacturing cost is low.
Description
Technical Field
The utility model relates to a keep off native component from stagnant water steel-pipe pile excavation supporting in the excavation supporting engineering field.
Background
The steel pipe pile (including hollow thin-wall steel structures with circular cross sections, square cross sections and other various cross section shapes) is of a thin-wall structure, is used as a soil retaining component in foundation pit enclosure, and has the advantages of high bearing capacity, high rigidity and recycling. After years of practice, the effect of pile pulling with soil can be eliminated by pile pulling with the soil plug compensation method, and a foundation is laid for the steel pipe pile serving as a reusable soil retaining component in foundation pit supporting. How to solve the problems of construction convenience, pile seam water stopping reliability and the like of the steel pipe pile has very important significance.
Disclosure of Invention
The utility model aims at providing a keep off native component from stagnant water steel-pipe pile excavation supporting, this kind keeps off native component stagnant water effectual, the steady quality, the cost is low, is suitable for multiple plug construction methods such as static pressure, vibration, hammering.
The self-sealing steel pipe pile foundation pit supporting and retaining component comprises a steel pipe pile, a superposed steel plate water-stop connection part and a steel plate connection and flange connection part, wherein the steel pipe pile is a tubular steel structure sinking into a rock-soil body, the superposed steel plate water-stop connection part is arranged along the axis direction of the steel pipe pile and is arranged at the position of a joint of adjacent steel pipe piles of the steel pipe pile, the superposed steel plate water-stop connection part at least comprises three groups of steel plates which are superposed or partially superposed, a middle group of steel plates positioned at the middle position are connected with one steel pipe pile in the adjacent steel pipe pile through steel plate connection, two groups of outer group steel plates positioned at two sides are connected with the other steel pipe pile in the adjacent steel pipe pile through steel plate connection, the middle group steel plates are connected with inserting tenons, the inserting tenons are components with the cross section size larger than the thickness of the middle group steel plates, slots are arranged between the two groups of outer group steel plates, the slots are cavities with the cross section size larger than the gaps between the two groups of outer group steel plates, insert falcon and slot and all arrange along steel-pipe pile axis direction, insert in the falcon inserts the slot, and two sets of outer group's steel sheets undertake the structure that acts on outer group's steel sheet and soil body contact surface position soil pressure in steel-pipe pile sinking work progress, and flange joint is the ring flange that is located the top of steel-pipe pile or steel-pipe pile merogenesis joint department and is connected with the steel-pipe pile.
In the self-sealing steel pipe pile foundation pit supporting and retaining member, the slot is of a hollow structure formed by splicing grooves formed by bending outer steel plates.
In the self-water-stopping steel pipe pile foundation pit supporting and retaining component, a water-stopping cavity is arranged at the joint of the middle group of steel plates and the outer group of steel plates, and the water-stopping cavity is a hollow strip-shaped cavity formed by surrounding two adjacent steel pipe piles or connecting pieces thereof.
In the self-sealing steel pipe pile foundation pit supporting and retaining member, the sealing cavity is filled with bagged fluid.
In the self-water-stopping steel pipe pile foundation pit supporting and retaining member, the water-stopping cavity is filled with a combination of bagged fluid and cement paste.
In the self-water-stopping steel pipe pile foundation pit supporting and retaining member, one or a combination of a plurality of water-stopping materials is filled in the water-stopping cavity.
In the self-sealing steel pipe pile foundation pit supporting and retaining member, the sealing cavity is filled with a flexible pad with compression performance.
The utility model discloses a keep off native component from stagnant water steel-pipe pile excavation supporting, because of be provided with at least three group's coincide steel sheet stagnant water in the stake seam and connect, under the effect of soil pressure, the size of adjacent stake seam can be effectively controlled, adjacent stake gap department, the seepage flow path length of groundwater and very narrow and small, can prevent groundwater disasters such as sand drift, piping. During construction, the earth pressure acting on the outer steel plate is utilized, construction deviation can be effectively controlled, the quality is reliable, the manufacturing cost is low, construction is rapid, and the water stopping effect is good.
Drawings
Fig. 1 is a schematic cross-sectional view of a single pile of a retaining member for a self-retaining steel pipe pile foundation pit support according to a first embodiment of the present invention;
fig. 2 is a schematic cross-sectional view illustrating a method of sheathing adjacent piles of a retaining member for a self-retaining steel pipe pile foundation pit support according to a first embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a single pile of a retaining member for a self-retaining steel pipe pile foundation pit support according to a second embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a second self-retaining steel pipe pile foundation pit supporting retaining member of the present invention in a manner of engaging adjacent piles;
fig. 5 is a schematic structural diagram of water stopping structure at the joint of adjacent piles of a retaining member of a foundation pit support of a first self-water-stopping steel pipe pile used in the first embodiment of the invention;
fig. 6 is a sectional view showing a single pile structure of a retaining member for a self-retaining steel pipe pile foundation pit support according to a first embodiment of the present invention.
Detailed Description
As a first embodiment of the present invention, the following description is made with reference to fig. 1, fig. 2, fig. 5 and fig. 6 to describe the structural structure and the working principle of the retaining member for the self-stop steel pipe pile foundation pit support. The utility model discloses a single pile structure of self-sealing steel-pipe pile excavation supporting retaining member can set up to as shown in figure 1 and figure 6 structural style. This first self-sealing steel-pipe pile foundation pit supporting keeps off soil component includes steel-pipe pile (1), coincide steel sheet stagnant water and connects, steel sheet connection and flange joint four bibliographic categories branch, steel-pipe pile (1) wherein for the tubulose steel construction that sinks in the ground body, coincide steel sheet stagnant water is connected and is laid along steel-pipe pile (1) axis direction to set up in steel-pipe pile (1) adjacent pile seam position. The laminated steel plate water-stop connection at least comprises three groups of steel plates which are arranged in an overlapped mode or partially arranged in an overlapped mode, a middle group of steel plates (2) positioned in the middle position are connected with one steel pipe pile (1) in the adjacent steel pipe pile through steel plates (6), two groups of outer group of steel plates (4) positioned on two sides are connected with the other steel pipe pile (1) in the adjacent steel pipe pile through steel plates (6), inserting tenons (3) are connected on the middle group of steel plates (2), the inserting tenons (3) are members with cross section sizes larger than the thickness of the middle group of steel plates (2), inserting slots (5) are arranged between the two groups of outer group of steel plates (4), the inserting slots (5) are cavities with cross section sizes larger than gaps between the two groups of outer group of steel plates (4), the inserting tenons (3) and the inserting slots (5) are arranged along the axial direction of the steel pipe pile (1), the inserting tenons (3) are inserted into the inserting slots (5), and the two groups of outer group of steel plates (4) bear the action on the outer group of steel plates (4) and are connected with the outer group of steel pipes in the pile sinking process of pile (1) to connect with the outer group of steel pipes The contact surface position is the structure of soil pressure. In this embodiment, the adjacent steel pipe piles (1) may be socketed as shown in fig. 2. The single pile structure can be provided with the structure shown in fig. 1 and 6, namely, one side of a single steel pipe pile (1) is connected with the middle group steel plate (2), and the other side is connected with the outer group steel plate (4). In this embodiment, the single pile may be divided into two types of male pile and female pile, that is, two sides of the male pile are connected to the middle group steel plate (2), and two sides of the female pile are connected to the outer group steel plate (4), and during construction, the male pile and the female pile are adjacent to each other, so that the adjacent pile joint water stop structure shown in fig. 5 can be formed. In this embodiment, the slot (5) may be a hollow structure formed by splicing grooves formed by bending the outer steel plates (4), as shown in fig. 5. In the embodiment, the outer group of steel plates (4) and the middle group of steel plates (2) are arranged to be long enough along the axis direction of the steel pipe pile (1) and are arranged in an overlapping or partially overlapping mode, so that the underground water seepage path at the joint of adjacent piles is lengthened, at least one outer group of steel plates (4) is positioned on the soil-facing surface of a foundation pit, the rigidity of the outer group of steel plates (4) perpendicular to the excavation surface direction of the foundation pit is very small, the rigidity of the steel pipe pile is high, and the outer group of steel plates (4) can be in close contact with the middle group of steel plates (2) under the action of soil pressure, so that the water stopping purpose is achieved. In the embodiment, the flange plate (9) is arranged at the top of the steel pipe pile (1) or the section joint of the steel pipe pile (1), so that pile inserting and pulling construction is facilitated, and the deformation resistance of the end part of the steel pipe pile (1) can be effectively improved.
As a second embodiment of the present invention, the retaining member structure and the working principle of the self-stop steel pipe pile foundation pit support of the second embodiment of the present invention are described with reference to fig. 3 and 4. The second water-stopping steel pipe pile foundation pit supporting and retaining member structure is similar to that of the first embodiment, and is different in that a water-stopping cavity (8) is arranged at a joint between a middle group steel plate (2) and an outer group steel plate (4), and the water-stopping cavity (8) is formed by enclosing two adjacent steel pipe piles (1) and connecting pieces thereof. In the present embodiment, angle steel (7) may be welded to the outer surface of the steel pipe pile (1) on both sides of the middle group steel plate (2) as shown in fig. 3 and 4, and the water-stopping cavity (8) may be enclosed by the angle steel (7), a part of the middle group steel plate (2), a part of the outer group steel plate (4), and a part of the steel pipe pile (1). In this embodiment, a water-stopping cavity (8) may be filled with a pressurized fluid in a bag to enhance the water-stopping effect, and the fluid in the bag may be one or a combination of water and gas contained in a flexible bag. In the embodiment, the water-stopping cavity (8) is filled with a combination of pressurized bagged fluid and cement paste, so that the combination mainly aims to fill gaps possibly existing between the bagged fluid and the water-stopping cavity (8) at corner positions and improve the water-stopping effect. In this embodiment, one or a combination of water-stopping materials may be filled in the water-stopping cavity (8), and the water-stopping material to be filled may be a settable building material such as cement paste, mortar, concrete, or the like, a chemical material such as epoxy resin, polyurethane, or the like, or a hot-melt material. In the embodiment, a gap between the middle group steel plate (2) and the outer group steel plate (4) can be used as the water-stopping cavity (8). In the embodiment, the water-stopping cavity (8) can be filled with a flexible pad with compression performance to improve the water-stopping effect.
This patent includes, but is not limited to, other similar structures that may be substituted by one skilled in the art.
Claims (7)
1. A self-water-stopping steel pipe pile foundation pit supporting and retaining component is characterized by comprising four parts, namely a steel pipe pile (1), a superposed steel plate water-stopping connection part and a steel plate connection part (6) and a flange connection part, wherein the steel pipe pile (1) is a tubular steel structure sinking into a rock-soil body, the superposed steel plate water-stopping connection part is arranged along the axis direction of the steel pipe pile (1) and is arranged at the position of a joint of adjacent piles of the steel pipe pile (1), the superposed steel plate water-stopping connection part at least comprises three groups of steel plates which are superposed or partially superposed, a middle group of steel plates (2) positioned at the middle position are connected with one steel pipe pile (1) of the adjacent steel pipe piles through the steel plate connection part (6), two groups of outer group of steel plates (4) positioned at two sides are connected with the other steel pipe pile (1) of the adjacent steel pipe piles through the steel plate connection part (6), a falcon (3) is connected on the middle group of steel plates (2), be provided with slot (5) between two sets of outer steel sheet (4), slot (5) are greater than the cavity in clearance between two sets of outer steel sheet (4) for the cross sectional dimension, insert falcon (3) and slot (5) and all arrange along steel-pipe pile (1) axis direction, insert falcon (3) and insert in slot (5), and two sets of outer steel sheet (4) of organizing undertake in steel-pipe pile (1) pile sinking work process and act on outer steel sheet (4) and the structure of soil pressure of soil body contact surface position, flange joint is flange dish (9) that the top that is located steel-pipe pile (1) or steel-pipe pile (1) merogenesis joint department and steel-pipe pile (1) are connected.
2. The retaining member for a self-stop steel pipe pile foundation pit support according to claim 1, wherein the slot (5) is a hollow structure formed by splicing grooves formed by bending the outer steel plate (4).
3. The self-water-stopping steel pipe pile foundation pit supporting and retaining member as claimed in claim 1, wherein a water-stopping cavity (8) is arranged at the joint of the middle group steel plate (2) and the outer group steel plate (4), and the water-stopping cavity (8) is a hollow strip-shaped cavity surrounded by two adjacent steel pipe piles or connecting pieces thereof.
4. The self-stop steel pipe pile foundation pit supporting and retaining member as claimed in claim 3, wherein said water-stop cavity (8) is filled with a bagged fluid.
5. The self-stop steel pipe pile foundation pit supporting and retaining member as claimed in claim 3, wherein the water-stop cavity (8) is filled with a combination of bagged fluid and cement paste.
6. The self-stop steel pipe pile foundation pit supporting and retaining member as claimed in claim 3, wherein the water-stop cavity (8) is filled with one or a combination of water-stop materials.
7. The self-stop steel pipe pile foundation pit supporting and retaining member as claimed in claim 3, wherein said water-stop cavity (8) is filled with a flexible pad having a compression property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022008638.3U CN213773424U (en) | 2020-09-08 | 2020-09-08 | Self-water-stop steel pipe pile foundation pit supporting earth retaining component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022008638.3U CN213773424U (en) | 2020-09-08 | 2020-09-08 | Self-water-stop steel pipe pile foundation pit supporting earth retaining component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213773424U true CN213773424U (en) | 2021-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022008638.3U Active CN213773424U (en) | 2020-09-08 | 2020-09-08 | Self-water-stop steel pipe pile foundation pit supporting earth retaining component |
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| Country | Link |
|---|---|
| CN (1) | CN213773424U (en) |
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- 2020-09-08 CN CN202022008638.3U patent/CN213773424U/en active Active
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