CN217001865U - Pipe curtain with high bending rigidity and arrangement structure thereof - Google Patents
Pipe curtain with high bending rigidity and arrangement structure thereof Download PDFInfo
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- CN217001865U CN217001865U CN202220171487.XU CN202220171487U CN217001865U CN 217001865 U CN217001865 U CN 217001865U CN 202220171487 U CN202220171487 U CN 202220171487U CN 217001865 U CN217001865 U CN 217001865U
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Abstract
The utility model discloses a pipe curtain with higher bending rigidity and an arrangement structure thereof, comprising a steel pipe, concrete and a steel plate; the steel plates are symmetrically welded inside the steel pipe along the horizontal direction; concrete is filled in the steel pipe, and the steel plate is wrapped by the concrete. One pair, two pairs or more pairs of rectangular steel plates are symmetrically welded in the steel pipe along the horizontal direction. The steel plate is uniformly provided with holes, and the opening rate is not less than 50%. After one or more pairs of rectangular steel plates arranged in the horizontal direction are arranged in the steel pipe, the bending rigidity of the steel pipe is greatly improved, and the vertical settlement of a pipe curtain structure is effectively reduced; the rectangular steel plate is welded in the steel pipe, so that the operation is simple, the construction is convenient, the construction difficulty and the construction cost are not obviously increased, and the cost performance is higher; the steel plate is provided with a series of holes, so that the filling and flowing of concrete in the steel pipe are not influenced, and the concrete pouring construction is not influenced.
Description
Technical Field
The utility model relates to the technical field of underground space construction, in particular to a pipe curtain with high bending rigidity and an arrangement structure thereof.
Background art:
the pipe curtain construction method is that after a pipe jacking method is adopted to jack a steel pipe in place, concrete is filled in the steel pipe, and soil excavation and box culvert jacking operations are carried out in a space formed by the steel pipe concrete. In the process of gradually excavating the inner soil body, the pipe curtain structure is deformed to a certain extent, and particularly, the vertical settlement of the top row steel pipes of the pipe curtain structure is often a key control parameter.
In order to reduce the vertical settlement of the tube curtain structure, it is often necessary to provide the bending stiffness of the steel tube concrete. The bending rigidity of the steel pipe concrete is composed of two parts of the bending rigidity of the steel pipe and the bending rigidity of the concrete, and under the condition that the diameter of the steel pipe is fixed, the bending rigidity of the steel pipe and the bending rigidity of the concrete are difficult to further improve. Therefore, the bending rigidity of the steel pipe concrete is improved, the diameter of the steel pipe is always required to be increased, the construction difficulty is increased, and the construction cost is increased.
Therefore, under the condition that the diameter of the steel tube is not increased, how to improve the bending rigidity of the concrete-filled steel tube in the tube curtain structure and reduce the vertical settlement of the tube curtain structure is a technical problem worthy of discussion.
The utility model has the following contents:
in order to make up for the defects of the prior art, the utility model aims to provide a pipe curtain with high bending rigidity and an arrangement structure thereof.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a great pipe curtain of bending stiffness which characterized in that: comprises steel pipes, concrete and steel plates; the steel plates are horizontally and symmetrically fixed inside the steel pipe; concrete is filled in the steel pipe, and the steel plate is wrapped by the concrete.
The great pipe curtain of bending stiffness, its characterized in that: one pair, two pairs or more pairs of steel plates are horizontally and symmetrically welded in the steel pipe.
The great pipe curtain of bending stiffness, its characterized in that: the steel plate is a rectangular steel plate.
The great pipe curtain of bending stiffness, its characterized in that: the steel plate is uniformly provided with holes, and the opening rate is not less than 50%.
The arrangement structure of the pipe curtain with higher bending rigidity is characterized in that: including many root canal curtains in the subsurface, many root canal curtains enclose into the cross section and are the rectangle form, and end row, left row, right row pipe curtain are traditional pipe curtain, and traditional pipe curtain is built-in by the steel pipe and only fills the concrete and constitute, and top row pipe curtain fills the concrete and constitutes after setting up the steel sheet by the inside level of steel pipe and symmetry.
The arrangement structure of the pipe curtain with higher bending rigidity is characterized in that: the top calandria curtain from the middle to bilateral symmetry distribute, the logarithm of the horizontal arrangement steel sheet in the steel pipe of middle calandria curtain is greater than the logarithm of the horizontal arrangement steel sheet in the steel pipe of both sides calandria curtain.
The utility model has the advantages that:
1. after one or more pairs of rectangular steel plates arranged in the horizontal direction are arranged in the steel pipe, the bending rigidity of the steel pipe is greatly improved, and the vertical settlement of a pipe curtain structure is effectively reduced.
2. The rectangular steel plate is welded in the steel pipe, so that the operation is simple, the construction is convenient, the construction difficulty and the construction cost are not obviously increased, and the cost performance is higher.
3. The steel plate is provided with the series of holes, so that the filling and flowing of concrete in the steel pipe are not influenced, and the concrete pouring construction is not influenced.
Description of the drawings:
FIG. 1 is a cross-sectional view of a pair of horizontal rectangular steel plates provided inside a steel pipe according to the present invention.
FIG. 2 is a three-dimensional schematic view of a pair of horizontal rectangular steel plates arranged in the steel pipe of the present invention.
FIG. 3 is a cross-sectional view of two pairs of horizontal rectangular steel plates arranged inside the steel pipe of the present invention.
FIG. 4 is a three-dimensional schematic view of two pairs of horizontal rectangular steel plates arranged in the steel pipe of the present invention.
Fig. 5 is a cross-sectional view of a tube sheet arrangement according to the present invention.
FIG. 6 is a graph showing the relationship between the bending rigidity of the tube curtain when a pair of steel plates is installed or not installed, with the distance from the steel plate to the center of the steel tube being varied.
Description of reference numerals: 1. a steel pipe; 2. concrete; 3. a steel plate; A. and (4) the earth surface.
The specific implementation mode is as follows:
the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention:
a pipe curtain with larger bending rigidity comprises a steel pipe 1, concrete 2 and a steel plate 3; the steel plates 3 are symmetrically welded inside the steel pipe 1 along the horizontal direction; concrete 2 is filled in the steel tube 1, and the steel plate 3 is wrapped by the concrete 2.
One, two or more pairs of rectangular steel plates 3 are welded inside the steel pipe 1 symmetrically along the horizontal direction. Fig. 1 and 2 show a case where a pair of horizontal rectangular steel plates 3 is provided. Fig. 3 and 4 show a case where two pairs of horizontal rectangular steel plates 3 are provided. In a similar manner, multiple pairs of horizontal rectangular steel plates may be provided as desired.
The above-mentioned "horizontal direction" generally refers to a direction parallel to the ground (horizontal ground), and the corresponding "vertical direction" refers to a direction of gravity. Theoretical analysis shows that compared with the arrangement of a vertical rectangular steel plate, the arrangement of a horizontal steel plate can improve the bending rigidity of the pipe curtain structure.
The above-mentioned term "symmetrically" means symmetrically about the center of the steel pipe.
The pipe curtain with higher bending rigidity is characterized in that: the steel plate 3 is uniformly provided with holes, and the opening rate is not less than 50%. The open area ratio refers to the ratio of the area of the hole to the total area of the steel sheet. The holes can be square holes or round holes. Fig. 2 and 4 show schematic views of the circular holes. The aperture ratio can ensure that concrete flows freely and fills the inner space of the steel pipe, and the aperture ratio is not too large, so that the rigidity of the steel plate is reduced, and the steel plate is bent and damaged.
The effect of the horizontal steel plate is discussed by theoretical data, and the calculation conditions are as follows: the diameter of the steel pipe is 1.60m, the thicknesses of the steel plate and the steel pipe are both 16mm, the concrete grade is C20, and a pair of horizontal steel plates are arranged. And (4) calculating to obtain a comparison relation graph of the bending rigidity of the pipe curtain under the condition that the distance between the steel plate and the center of the steel pipe is changed and a pair of steel plates is arranged or not arranged (see figure 6).
Analyzing the data, setting two horizontal steel plates and the distance between the steel plates and the center of the steel pipedThe bending rigidity of the tube sheet structure at 0.7m (steel sheet width 0.78 m) was 1.197 times as high as that at the time of no steel sheet. The vertical settlement of the tube curtain is in inverse proportion to the bending rigidity, so that the vertical settlement of the tube curtain structure can be reduced by 16.4 percent. It can be seen that the rectangular steel plate can greatly improve the pipe curtain structureBending stiffness, while the steel sheet material required is limited.
If the bending rigidity of the pipe curtain structure needs to be further improved, two or more pairs of rectangular steel plates can be horizontally and symmetrically arranged in the steel pipe. Generally, the vertical settlement (deflection) of the steel pipe in the middle of the top row of the pipe curtain structure is large. A plurality of pairs of steel plates can be arranged in the area with large deflection, and fewer steel plates are used in the area with small deflection, so that the optimal arrangement is achieved.
Therefore, the pipe curtain arrangement structure proposed by the utility model is as shown in fig. 5, the bottom steel pipe and the side steel pipe are the same as the traditional pipe curtain structure, and two pairs of steel pipes with horizontally arranged rectangular steel plates are sequentially adopted from the top to the two sides along the middle position. Although adopting this scheme to have certain increase effect to the cost, nevertheless increase limitedly, the price/performance ratio is higher, provides a new thinking for reducing the vertical settlement of pipe curtain structure.
Compared with the traditional pipe curtain, the utility model has great advantages, after one or more pairs of rectangular steel plates arranged in the horizontal direction are arranged in the steel pipe, the bending rigidity is greatly improved, and the vertical settlement of the pipe curtain structure is effectively reduced; the rectangular steel plate is welded in the steel pipe, so that the operation is simple, the construction is convenient, the construction difficulty and the construction cost are not obviously increased, and the cost performance is higher; the steel plate is provided with a series of holes, so that the filling and flowing of concrete in the steel pipe are not influenced, and the concrete pouring construction is not influenced.
Only part of the shape and part of the connection mode of the tube curtain structure are shown in the attached drawings, and according to the proposed concept, the number, the shape and the connection mode of the steel plates can be changed, or the arrangement direction of the steel plates can be changed to form other related tube curtains with larger bending rigidity, which all belong to equivalent modification and change of the utility model, and are not described again.
The drawings are for illustration purposes only and are not to be construed as limiting the utility model; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar parts; the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the present invention.
The present invention is not limited to the above embodiments, and various other equivalent modifications, substitutions and alterations can be made without departing from the basic inventive concept of the present invention as described above, according to the common technical knowledge and conventional means in the field.
Claims (6)
1. A great pipe curtain of bending stiffness which characterized in that: comprises a steel pipe, concrete and a steel plate; the steel plates are horizontally and symmetrically fixed inside the steel pipe; concrete is filled in the steel pipe, and the steel plate is wrapped by the concrete.
2. The screen of claim 1 with greater bending stiffness, wherein: one pair, two pairs or more pairs of steel plates are horizontally and symmetrically welded in the steel pipe.
3. The screen of claim 1 with greater bending stiffness, wherein: the steel plate is a rectangular steel plate.
4. The screen of claim 1 wherein the screen has a greater bending stiffness: the steel plate is uniformly provided with holes, and the opening rate is not less than 50%.
5. The arrangement of the tube sheet with high bending rigidity according to claim 1, wherein: including many root canal curtains in the subsurface, many root canal curtains enclose into the cross section and are the rectangle form, and end row, left row, right row pipe curtain are traditional pipe curtain, and traditional pipe curtain is built-in by the steel pipe and only fills the concrete and constitute, and top row pipe curtain fills the concrete and constitutes after setting up the steel sheet by the inside level of steel pipe and symmetry.
6. The arrangement structure of the tube sheet with large bending rigidity according to claim 5, wherein: the top tube bank curtain is symmetrically distributed from the middle to two sides, and the number of pairs of horizontally arranged steel plates in the steel tubes of the middle tube bank curtain is greater than that of the horizontally arranged steel plates in the steel tubes of the tube banks at two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220171487.XU CN217001865U (en) | 2022-01-21 | 2022-01-21 | Pipe curtain with high bending rigidity and arrangement structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220171487.XU CN217001865U (en) | 2022-01-21 | 2022-01-21 | Pipe curtain with high bending rigidity and arrangement structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217001865U true CN217001865U (en) | 2022-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220171487.XU Active CN217001865U (en) | 2022-01-21 | 2022-01-21 | Pipe curtain with high bending rigidity and arrangement structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217001865U (en) |
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2022
- 2022-01-21 CN CN202220171487.XU patent/CN217001865U/en active Active
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