CN215761702U - Composite duct piece for small turning and tunnel lining structure - Google Patents
Composite duct piece for small turning and tunnel lining structure Download PDFInfo
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- CN215761702U CN215761702U CN202122218141.9U CN202122218141U CN215761702U CN 215761702 U CN215761702 U CN 215761702U CN 202122218141 U CN202122218141 U CN 202122218141U CN 215761702 U CN215761702 U CN 215761702U
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Abstract
The utility model discloses a composite duct piece for small turns, which comprises an outer frame (1) of a steel structure, wherein the outer frame (1) of the steel structure comprises an arc back plate (2), the arc back plate (2) is an arc isosceles trapezoid plate, two sides of the isosceles trapezoid plate are fixedly connected with side plates (3), two bottoms of the isosceles trapezoid plate are fixedly connected with end plates (4), and the side plates (3) are connected with the end plates (4) and enclose an arc cavity; the end plate (4) comprises a first end plate (16) and a second end plate (17); the width of the end plate I (16) is B +. DELTA.L; the width of the end plate two (17) is B- Δ L. Meanwhile, the utility model provides a small-curvature-radius turning tunnel lining structure. The wedge-shaped amount and the width of the composite pipe sheet ring can be designed according to an arc line with a small curvature radius, so that the posture of the shield machine is easy to control, and a trapping state is not easy to occur.
Description
Technical Field
The utility model belongs to the field of shield construction, and particularly relates to a composite duct piece for small turning and a tunnel lining structure.
Background
The shield segment is a main assembly component for shield construction, is the outermost barrier of the tunnel and plays a role in resisting soil layer pressure, underground water pressure and some special loads. The quality of the shield segment is directly related to the overall quality and safety of the tunnel, and the waterproof performance and the durability of the tunnel are affected. With the development of cities, more and more buildings are built on the ground. In order to avoid the existing buildings (structures), tunnels with small curvature radius are increasingly adopted. At present, tunnel projects with curvature radius between 30 m and 50m at home and abroad are few. Because the duct piece of the traditional concrete adopted at present can not be made into a structure with high quality, small width and large wedge-shaped amount, the traditional concrete duct piece can not be used for turning with small curvature radius in tunnel engineering, and therefore the duct piece suitable for turning with small curvature radius is urgently needed in tunnel engineering.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: in order to overcome the defects in the prior art, the composite duct piece for the small turn is provided.
Meanwhile, the utility model provides a tunnel lining structure comprising the composite pipe piece for the small turn.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:
a composite duct piece for small turns comprises an outer frame of a steel structure, wherein the outer frame of the steel structure comprises an arc back plate, the arc back plate is an arc isosceles trapezoid plate, two waists of the isosceles trapezoid plate are fixedly connected with side plates, two bottoms of the isosceles trapezoid plate are fixedly connected with end plates, and the side plates are connected with the end plates and form an arc cavity; the end plate comprises a first end plate and a second end plate; the width of the first end plate is B +. DELTA.L; the width of the end plate II is B- Δ L; b is the width of the middle part of the isosceles trapezoidal plate, and L is the wedge-shaped amount of the composite pipe piece.
The calculation formula of the Δ L is as follows: Δ L = B × φ D/2R, where φ D is the tunnel diameter and R is the tunnel turning radius.
And splicing every 6 composite pipe pieces into a circular ring.
A hoisting hole is formed in the middle of the arc back plate, and a hoisting hole insert is connected to the periphery of the hoisting hole; the outer wall of the middle part of the hoisting hole insert is connected with a transverse rib plate, the hoisting hole insert is positioned in the middle part of the transverse rib plate, and two ends of the transverse rib plate are connected with vertical rib plates; the side surfaces of the vertical rib plates are connected with the side plates, the part between the two vertical rib plates is the middle section of the circular arc back plate, and the part between the vertical rib plates and the end plates is the bending section of the circular arc back plate; the first hand holes are formed in the side plates of the two bending sections, the second hand holes are formed in the end plates, the first hand holes are surrounded by the first arc-shaped rib plates to form first hand hole areas, the second hand holes are surrounded by the second arc-shaped rib plates to form second hand hole areas, the first arc-shaped rib plates are connected with the top ends of the second arc-shaped rib plates, and gaps for pouring concrete are formed between the first arc-shaped rib plates and the vertical rib plates.
And the side plates and the outer walls of the end plates are provided with water stopping grooves for mounting sealing strips.
Reinforcing steel bars are connected between the end plate and the vertical rib plates, between the two opposite second arc rib plates and between the two opposite first arc rib plates.
The top end of the first arc-shaped rib plate is higher than the top end of the vertical rib plate.
The utility model relates to a turning tunnel lining structure with small curvature radius, which is formed by splicing composite segments for small turning.
The utility model provides a composite duct piece for small turning and a tunnel lining structure, which have the following advantages: the composite pipe piece is an outer frame of a steel structure, and the outer frame of the steel structure of the composite pipe piece is formed by welding, so that the wedge-shaped amount and the width of a lined composite pipe piece ring can be designed according to an arc line with a small curvature radius, the posture of the shield tunneling machine is easy to control, and the trapping state is not easy to occur. In addition, the arrangement of pouring concrete and reinforcing steel bars can increase the strength and durability of the composite pipe sheet ring. The water stopping groove can effectively play a waterproof role.
Drawings
FIG. 1 is a schematic structural view of an outer frame according to the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic structural view of two adjacent composite segments after the side plates are connected;
FIG. 5 is a schematic structural view of two adjacent composite segments after the end plates are connected;
FIG. 6 is a schematic structural view of a vertical rib plate according to the present invention;
fig. 7 is a schematic view of the mounting structure of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Example 1
A composite duct piece for small turns mainly comprises an outer frame 1 of a steel structure, a concrete filling layer and a reinforcing steel layer. The outer frame 1 of the steel structure mainly comprises two side plates 3, two end plates 4, an arc back plate 2, an inner rib plate, a hoisting hole insert 6 and the like.
As shown in figure 1, the two end plates 4 and the side plates 3 are provided with water stopping grooves 18 for installing sealing strips, so that the waterproof effect can be achieved.
The outer frame 1 of the steel structure of the composite pipe piece is formed by welding, so that the wedge amount and the width of the lined composite pipe piece ring can be designed according to the arc with small curvature radius, if the diameter phi D of the tunnel and the turning radius R of the tunnel are known, the smaller the width B of the composite pipe piece ring is, the smaller the wedge amount L is, the closer the lined tunnel is to the theoretical tunnel arc, and the posture of the shield machine is easy to control and the drowning state is not easy to occur. If the width B, the diameter PhiD and the amount L of the wedge of the composite pipe sheet ring are known, the turning radius R of the tunnel can be calculated, as an example: the width B of the composite tube sheet ring is 500mm, the diameter phi D of the tunnel is 2500mm, the amount of the wedge L is 20mm, the turning radius R = (0.5 multiplied by 2.5)/(2 multiplied by 0.02) =31.25m, the relevant formula and schematic diagram are shown in figure 7, and specifically, tan theta = B/2R = L/phi D; r = B × φ D/2 Δ L; Δ L = B × φ D/2R; the concrete filling layer and the reinforcing layer can increase the strength and durability of the composite pipe sheet ring, and the structure is shown in figures 2-3 and 6.
Example 2
As shown in fig. 1, a composite duct piece for small turns comprises an outer frame 1 of a steel structure, wherein the outer frame 1 of the steel structure comprises an arc back plate 2, the arc back plate 2 is an arc isosceles trapezoid plate, two sides of the isosceles trapezoid plate are fixedly connected with side plates 3, two bottoms of the isosceles trapezoid plate are fixedly connected with end plates 4, and the side plates 3 and the end plates 4 are connected and enclose an arc-shaped cavity; the end plate 4 comprises a first end plate 16 and a second end plate 17; the width of the end plate I16 is B +. DELTA.L; the width of the end plate II 17 is B- Δ L; b is the width of the middle part of the isosceles trapezoidal plate, and L is the wedge-shaped amount of the composite pipe piece.
The calculation formula of the Δ L is as follows: Δ L = B × φ D/2R, where φ D is the tunnel diameter and R is the tunnel turning radius. In this embodiment, the width of the first end plate 16 and the width of the second end plate 17 are very small, and the Δ L does not exceed 80 mm.
Every 6 compound section of jurisdiction pieces together a ring, and this ring is compound section of jurisdiction ring. A plurality of composite segment rings are assembled into a small-curvature-radius turning tunnel lining structure.
Example 3
This example differs from example 2 only in that: as shown in fig. 2, a hoisting hole 5 is formed in the middle of the arc-shaped back plate 2, and a hoisting hole insert 6 is connected to the periphery of the hoisting hole 5; the outer wall of the middle part of the hoisting hole insert 6 is connected with a transverse rib plate 7, the hoisting hole insert 6 is positioned in the middle part of the transverse rib plate 7, and two ends of the transverse rib plate 7 are connected with vertical rib plates 8; the side surfaces of the vertical rib plates 8 are connected with the side plates 3, the part between the two vertical rib plates 8 is the middle section of the circular arc back plate 2, and the part between the vertical rib plates 8 and the end plate 4 is the bending section of the circular arc back plate 2; first hand holes 9 are formed in the side plates 3 of the two bending sections, second hand holes 10 are formed in the end plates 4, first hand hole areas 12 are formed in the positions of the first hand holes 9 by means of first arc-shaped rib plates 11 in an enclosing mode, second hand hole areas 14 are formed in the positions of the second hand holes 10 by means of second arc-shaped rib plates 13 in an enclosing mode, the top ends of the first arc-shaped rib plates 11 and the top ends of the second arc-shaped rib plates 13 are connected, and gaps 15 used for pouring concrete 20 are formed between the first arc-shaped rib plates 11 and the vertical rib plates 8.
And water stopping grooves 18 for installing sealing strips are arranged on the outer walls of the side plates 3 and the end plates 4.
As shown in fig. 3, reinforcing steel bars 19 are connected between the end plate 4 and the vertical rib plate 8, between the two vertical rib plates 8, between the two opposite second arc-shaped rib plates 13, and between the two opposite first arc-shaped rib plates 11.
As shown in fig. 5, after the end plates of 6 adjacent composite pipe pieces are connected, a composite pipe piece ring is spliced; as shown in fig. 4, after adjacent composite segment rings are connected by side plates, two composite segment rings which are longitudinally connected are formed, and after a plurality of composite segment rings are connected, a small-curvature-radius turning tunnel lining structure as shown in fig. 7 is formed.
The top end of the first arc rib plate 11 is higher than the top end of the vertical rib plate 8.
Example 4
As shown in fig. 7, a turning tunnel lining structure with a small radius of curvature formed by assembling the composite segments for small turns according to any one of embodiments 1 to 3 is adopted.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
While the utility model has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this description, will appreciate that other embodiments can be devised which do not depart from the scope of the utility model as described herein. Furthermore, it should be noted that the language used in the specification has been principally selected for readability and instructional purposes, and may not have been selected to delineate or circumscribe the inventive subject matter. Accordingly, many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the appended claims. The present invention has been disclosed in an illustrative rather than a restrictive sense, and the scope of the present invention is defined by the appended claims.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the utility model and these are intended to be within the scope of the utility model.
Claims (8)
1. The utility model provides a compound section of jurisdiction for little turn which characterized in that: the steel structure comprises an outer frame (1) of a steel structure, wherein the outer frame (1) of the steel structure comprises an arc back plate (2), the arc back plate (2) is an arc isosceles trapezoid plate, two sides of the isosceles trapezoid plate are fixedly connected with side plates (3), two bottoms of the isosceles trapezoid plate are fixedly connected with end plates (4), and the side plates (3) are connected with the end plates (4) and enclose an arc cavity; the end plate (4) comprises a first end plate (16) and a second end plate (17); the width of the end plate I (16) is B +. DELTA.L; the width of the end plate II (17) is B- Δ L; b is the width of the middle part of the isosceles trapezoidal plate, and L is the wedge-shaped amount of the composite pipe piece.
2. A composite duct sheet for tight turns according to claim 1, wherein: the calculation formula of the Δ L is as follows: Δ L = B × φ D/2R, where φ D is the tunnel diameter and R is the tunnel turning radius.
3. A composite duct sheet for tight turns according to claim 1, wherein: and splicing every 6 composite pipe pieces into a circular ring.
4. A composite duct sheet for tight turns according to claim 1, wherein: a hoisting hole (5) is formed in the middle of the arc back plate (2), and a hoisting hole insert (6) is connected to the periphery of the hoisting hole (5); the outer wall of the middle part of the hoisting hole insert (6) is connected with a transverse rib plate (7), the hoisting hole insert (6) is positioned in the middle part of the transverse rib plate (7), and two ends of the transverse rib plate (7) are connected with vertical rib plates (8); the side surfaces of the vertical rib plates (8) are connected with the side plates (3), the part between the two vertical rib plates (8) is the middle section of the circular arc back plate (2), and the part between the vertical rib plates (8) and the end plate (4) is the bending section of the circular arc back plate (2); the concrete pouring device is characterized in that first hand holes (9) are formed in the side plates (3) of the two bending sections, second hand holes (10) are formed in the end plates (4), first hand holes (9) are surrounded by first arc-shaped rib plates (11) to form first hand hole areas (12), second hand holes (10) are surrounded by second arc-shaped rib plates (13) to form second hand hole areas (14), the top ends of the first arc-shaped rib plates (11) and the second arc-shaped rib plates (13) are connected, and gaps (15) used for pouring concrete (20) are formed between the first arc-shaped rib plates (11) and the vertical rib plates (8).
5. A composite duct sheet for tight turns according to claim 1 or 4, wherein: and water stopping grooves (18) for installing sealing strips are arranged on the outer walls of the side plates (3) and the end plates (4).
6. A composite duct sheet for tight turns according to claim 4, wherein: and reinforcing steel bars (19) are connected between the end plate (4) and the vertical rib plates (8), between the two opposite second arc rib plates (13) and between the two opposite first arc rib plates (11).
7. A composite duct sheet for tight turns according to claim 4, wherein: the top end of the first arc-shaped rib plate (11) is higher than the top end of the vertical rib plate (8).
8. A turning tunnel lining structure with small curvature radius formed by assembling the composite segments for small turns according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122218141.9U CN215761702U (en) | 2021-09-14 | 2021-09-14 | Composite duct piece for small turning and tunnel lining structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122218141.9U CN215761702U (en) | 2021-09-14 | 2021-09-14 | Composite duct piece for small turning and tunnel lining structure |
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| Publication Number | Publication Date |
|---|---|
| CN215761702U true CN215761702U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122218141.9U Active CN215761702U (en) | 2021-09-14 | 2021-09-14 | Composite duct piece for small turning and tunnel lining structure |
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| CN (1) | CN215761702U (en) |
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2021
- 2021-09-14 CN CN202122218141.9U patent/CN215761702U/en active Active
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