CN220539628U - Straight middle wall structure and straight middle wall drainage structure of multi-arch tunnel - Google Patents
Straight middle wall structure and straight middle wall drainage structure of multi-arch tunnel Download PDFInfo
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- CN220539628U CN220539628U CN202321834872.9U CN202321834872U CN220539628U CN 220539628 U CN220539628 U CN 220539628U CN 202321834872 U CN202321834872 U CN 202321834872U CN 220539628 U CN220539628 U CN 220539628U
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- drainage
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 239000004744 fabric Substances 0.000 claims description 4
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 238000009987 spinning Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- 238000010276 construction Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 239000011435 rock Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
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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
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Abstract
The utility model discloses a straight middle wall structure and a straight middle wall drainage structure of a multi-arch tunnel, which comprise a Y-shaped straight middle wall and main holes on the left side and the right side, wherein a main hole primary support and a main hole secondary lining are arranged on the main holes, a middle pilot hole primary support is arranged on the Y-shaped straight middle wall, vertical drainage pipes are distributed in the longitudinal direction of the Y-shaped straight middle wall, a top transverse drainage pipe and a bottom transverse drainage pipe are respectively arranged at the upper end and the lower end of each vertical drainage pipe, the bottom transverse drainage pipe is communicated with a road side drainage blind channel, a back-buckled channel steel is arranged at the top of each vertical drainage pipe, the channel steel is arranged along the longitudinal direction of the Y-shaped straight middle wall, and a concrete backfill layer is arranged between the middle pilot hole primary support and the channel steel; the utility model can effectively solve the problems of difficult drainage and water leakage of the straight-wall multi-arch tunnel, improves the application range of the straight-wall multi-arch tunnel, and improves the aesthetic property and durability of the straight-wall multi-arch tunnel.
Description
Technical Field
The utility model relates to a straight middle wall structure and a straight middle wall drainage structure of a multi-arch tunnel, and belongs to the technical field of multi-arch tunnel drainage.
Background
The multi-arch tunnel is one of the common forms of tunnels, and has the characteristics of small occupied area, convenience in wiring, avoidance of the framing of an oversized bridge at the opening, reduction of the excavation of the side slope at the opening and the like, so that the multi-arch tunnel is widely applied to the field of highway construction in China. The multi-arch tunnel can be divided into a curved-wall multi-arch tunnel and a straight-wall multi-arch tunnel according to the form of a middle wall. The curved wall multi-arch tunnel has good waterproof performance because the waterproof board can be connected to the bottom of the side wall. However, due to the influence of the left and right line spacing of the main line, when the two liners of the curved wall multi-arch tunnel cannot fall down, a straight wall multi-arch tunnel with smaller line spacing needs to be adopted. The biggest problem at present is waterproof and drainage, and investigation shows that almost all straight-wall multi-arch tunnels at present have water leakage at the arch shoulder position. Because the top of the middle wall is of a V-shaped structure, surrounding rock crack water can be converged at the top of the middle wall of the road, a longitudinal construction joint exists at the top of the middle wall, and a large waterproof weak link exists. Although the drainage pipe is pre-buried in the straight middle wall, the drainage pipe is difficult to position, the drainage pipe is blocked and the like in the construction process, so that karst crevice water at the top of the middle wall directly flows out from the arch shoulder of the straight wall multi-arch tunnel along the construction joint, and the attractiveness and the durability of the straight middle wall of the multi-arch tunnel are affected. Although the water leakage problem of the straight middle wall is designed to comprise three layers of straight middle walls, two layers of straight middle walls and the like, the waterproof plates on one side or two sides of the straight middle walls are connected to the arch springing in sequence. For a three-layer straight middle wall, certain line spacing needs to be met, and the bearing capacity of the three-layer straight middle wall has certain risks for V-class and VI-class soil surrounding rocks and three-lane large-section tunnels. For the double-layer straight middle wall, the application range of the double-layer straight middle wall is also a two-lane tunnel with good surrounding rock conditions, and the lateral displacement when the middle wall is severely biased is strictly controlled in the construction process. The straight middle wall multi-arch tunnel with good drainage capacity is designed for the method and has important significance.
Disclosure of Invention
In view of the above, the utility model aims to provide a straight middle wall structure and a straight middle wall drainage structure of a multi-arch tunnel, which can effectively solve the problems of difficult drainage and water leakage of the straight middle wall multi-arch tunnel, improve the application range of the straight middle wall multi-arch tunnel and improve the attractiveness and durability of the straight middle wall; can overcome the defects of the prior art.
The utility model aims at realizing the following technical scheme:
the utility model discloses a straight middle wall structure and a straight middle wall drainage structure of a multi-arch tunnel, which comprise a Y-shaped straight middle wall and main holes on the left side and the right side, wherein a main hole primary support and a main hole secondary lining are arranged on the main holes, a middle pilot hole primary support is arranged on the Y-shaped straight middle wall, vertical drainage pipes are distributed in the longitudinal direction of the Y-shaped straight middle wall, a top transverse drainage pipe and a bottom transverse drainage pipe are respectively arranged at the upper end and the lower end of each vertical drainage pipe, the bottom transverse drainage pipe is communicated with a road side drainage blind channel, a back-buckled channel steel is arranged at the top of each vertical drainage pipe, the channel steel is arranged along the longitudinal direction of the Y-shaped straight middle wall, and a concrete backfill layer is arranged between the middle pilot hole primary support and the channel steel.
The distance between the vertical drain pipes along the longitudinal direction of the Y-shaped straight middle wall is 1m.
The top transverse drain pipe, the bottom transverse drain pipe and the vertical drain pipe are HDPE pipes with the diameter of 10 cm.
The top transverse drain pipe and the bottom transverse drain pipe are positioned on the left side and the right side of the vertical drain pipe, the top transverse drain pipe is inclined upwards, the bottom transverse drain pipe is inclined downwards, and the included angles between the top transverse drain pipe and the vertical drain pipe and between the bottom transverse drain pipe and the vertical drain pipe are consistent.
The spinning-free cloth layers are arranged outside the top transverse drain pipe, the vertical drain pipe and the bottom transverse drain pipe.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the vertical drainage pipe structure, the top transverse drainage pipe and the bottom transverse drainage pipe are respectively arranged at the upper end and the lower end of the vertical drainage pipe, the bottom transverse drainage pipe is communicated with the road side drainage hidden channel, the top of the vertical drainage pipe is provided with the inverted channel steel, the channel steel is arranged along the longitudinal direction of the Y-shaped straight middle wall, and the concrete backfill layer is arranged between the primary support of the middle guide hole and the channel steel.
2. The top transverse drain pipe and the bottom transverse drain pipe are positioned at the left side and the right side of the vertical drain pipe, the top transverse drain pipe is inclined upwards, the bottom transverse drain pipe is inclined downwards, the included angles between the top transverse drain pipe and the vertical drain pipe and between the bottom transverse drain pipe and the vertical drain pipe are consistent, the top transverse drain pipe is inclined upwards, water is favorably guided by the left side and the right side, the bottom drain pipe is inclined downwards, and water is favorably guided into a drainage blind channel at the side of a road.
3. The spinning-free cloth layers are arranged outside the top transverse drain pipe, the vertical drain pipe and the bottom transverse drain pipe, so that blockage in the construction process can be avoided.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail with reference to the accompanying drawings, in which:
fig. 1 is a schematic diagram of a connection structure according to the present utility model.
Fig. 2 is a schematic diagram of a connection structure of a vertical drain pipe and a horizontal drain pipe according to the present utility model.
FIG. 3 is a schematic view of a part of the structure of the Y-shaped straight middle wall of the present utility model.
Wherein, Y-shaped straight middle wall 1; a main hole 2; primary support 3 of main hole; a main hole second liner 4; a middle pilot tunnel primary support 5; a vertical drain pipe 6; a top transverse drain pipe 7; a bottom transverse drain pipe 8; a roadside drainage channel 9; channel steel 10; and a concrete backfill layer 11.
Detailed Description
Hereinafter, preferred embodiments of the present utility model will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.
As shown in fig. 1-3, the utility model discloses a straight middle wall structure and a straight middle wall drainage structure of a multi-arch tunnel, which are characterized in that a main hole 2 is provided with a main hole primary support 3 and a main hole secondary lining 4, a Y-shaped straight middle wall 1 is provided with a middle pilot hole primary support 5, vertical drainage pipes 6 are distributed in the longitudinal direction of the Y-shaped straight middle wall 1, and the space between the vertical drainage pipes 6 along the longitudinal direction of the Y-shaped straight middle wall 1 is 1m; the vertical drainage pipe 6 is provided with a top transverse drainage pipe 7 and a bottom transverse drainage pipe 8 at the upper end and the lower end respectively, the bottom transverse drainage pipe 8 is communicated with a road side drainage channel 9, the top of the vertical drainage pipe 6 is provided with a back-off channel steel 10, the channel steel 10 is arranged along the longitudinal direction of the Y-shaped straight middle wall 1, and a concrete backfill layer 11 is arranged between the middle pilot tunnel primary support 5 and the channel steel 10.
Further, the top transverse drain pipe 7, the bottom transverse drain pipe 8 and the vertical drain pipe 6 are HDPE pipes with the diameter of 10 cm; the top transverse drain pipe 7 and the bottom transverse drain pipe 8 are positioned on the left side and the right side of the vertical drain pipe 6, the top transverse drain pipe 7 is inclined upwards, the bottom transverse drain pipe 8 is inclined downwards, and the included angles between the top transverse drain pipe 7 and the vertical drain pipe 6 and between the bottom transverse drain pipe 8 and the vertical drain pipe 6 are consistent.
The spinning-free cloth layers are arranged outside the top transverse drain pipe 7, the vertical drain pipe 6 and the bottom transverse drain pipe 8, so that the blockage in the construction process can be avoided.
In the construction process, surrounding rock crack water in the middle of the multi-arch tunnel is collected to the middle of the Y-shaped straight middle wall 1 for centralized treatment, so that the surrounding rock crack water is prevented from being scattered and discharged along the construction joint at the top of the Y-shaped straight middle wall 1. Meanwhile, the construction joints of the two liners at the two sides are 34cm higher than the lowest part of the middle part of the Y-shaped straight middle wall 1, so that the middle part of the Y-shaped straight middle wall 1 has enough water collecting space.
The Y-shaped straight middle wall 1 is uniformly provided with the transverse drain pipe 7 and the transverse drain pipe 8 at the bottom, and is connected by adopting an oblique four-way joint, the transverse drain pipe 7 at the top, the transverse drain pipe 8 at the bottom and the vertical drain pipe 6 are connected into a whole, and the whole is wrapped by adopting non-woven fabrics, so that the blockage in the construction process is avoided. The drainage pipes are connected into a whole, one drainage pipe is arranged in the Y-shaped straight middle wall 1 along the longitudinal direction every 1 meter, so that the drainage capacity of the straight middle wall is improved, and meanwhile, the installation and the positioning are convenient; when the Y-shaped straight middle wall 1 is installed, the hole position of the bottom transverse drain pipe 8 is reserved, so that the bottom transverse drain pipe 8 is directly connected into the roadside drainage channel 9. The ends of the top transverse drain pipe 7 and the vertical drain pipe 6 are arranged outside the top middle wall template, so that the drain pipe is prevented from being blocked when middle wall concrete is poured, and the drain pipe is cleaned and dredged in time before the front hole and the rear main hole of the multi-arch tunnel are poured with the second lining 4.
And when the secondary lining 4 of the rear main hole of the multi-arch tunnel is constructed, the No. 40 hot-rolled light channel steel 10 is reversely buckled on the top of the Y-shaped straight middle wall 1, and when the secondary lining 4 of the rear main hole is constructed for 5-8 meters, the position of the No. 40 hot-rolled light channel steel 10 is timely adjusted to be positioned at the middle position of the top of the Y-shaped straight middle wall 1, and a pumping pipe is used for pumping backfill C20 concrete. The back-off channel steel 10 enables a longitudinal drainage channel to be formed at the top of the Y-shaped straight middle wall 1 when the top concrete backfill layer 11 is poured. The water in the longitudinal drainage channel is discharged from the end of the vertical drain pipe 6 to the Y-shaped straight middle wall 1.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way, and any simple modification, equivalent variations and modification made to the above embodiment according to the technical matter of the present utility model without departing from the technical scope of the present utility model still fall within the scope of the technical scheme of the present utility model.
Claims (5)
1. The utility model provides a wall structure in straight and straight wall drainage structures in multi-arch tunnel, it includes that wall (1) and left and right sides's main hole (2) in straight in Y type, is equipped with main hole preliminary bracing (3) and main hole two lining (4) on main hole (2), is equipped with in the preliminary bracing of pilot hole (5) on wall (1) in straight in Y type, and the longitudinal direction distribution on wall (1) in straight in Y type is equipped with vertical drain pipe (6), its characterized in that: the vertical drainage pipe (6) is provided with a top transverse drainage pipe (7) and a bottom transverse drainage pipe (8) at the upper end and the lower end respectively, the bottom transverse drainage pipe (8) is communicated with a road side drainage blind channel (9), the top of the vertical drainage pipe (6) is provided with a back-off channel steel (10), the channel steel (10) is arranged along the longitudinal direction of the Y-shaped straight middle wall (1), and a concrete backfill layer (11) is arranged between the middle pilot tunnel primary support (5) and the channel steel (10).
2. The multi-arch tunnel straight middle wall structure and straight middle wall drainage structure according to claim 1, wherein: the distance between the vertical drain pipes (6) along the longitudinal direction of the Y-shaped straight middle wall (1) is 1m.
3. The multi-arch tunnel straight middle wall structure and straight middle wall drainage structure according to claim 1, wherein: the top transverse drain pipe (7), the bottom transverse drain pipe (8) and the vertical drain pipe (6) are HDPE pipes with the diameter of 10 cm.
4. The multi-arch tunnel straight middle wall structure and straight middle wall drainage structure according to claim 1, wherein: the top transverse drain pipe (7) and the bottom transverse drain pipe (8) are positioned on the left side and the right side of the vertical drain pipe (6), the top transverse drain pipe (7) is inclined upwards, the bottom transverse drain pipe (8) is inclined downwards, and the included angles between the top transverse drain pipe (7) and the vertical drain pipe (6) and between the bottom transverse drain pipe (8) and the vertical drain pipe (6) are consistent.
5. The multi-arch tunnel straight middle wall structure and straight middle wall drainage structure according to any one of claims 1 to 4, wherein: the outside of the top transverse drain pipe (7), the vertical drain pipe (6) and the bottom transverse drain pipe (8) is provided with a non-spinning cloth layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321834872.9U CN220539628U (en) | 2023-07-13 | 2023-07-13 | Straight middle wall structure and straight middle wall drainage structure of multi-arch tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321834872.9U CN220539628U (en) | 2023-07-13 | 2023-07-13 | Straight middle wall structure and straight middle wall drainage structure of multi-arch tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220539628U true CN220539628U (en) | 2024-02-27 |
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ID=89963940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321834872.9U Active CN220539628U (en) | 2023-07-13 | 2023-07-13 | Straight middle wall structure and straight middle wall drainage structure of multi-arch tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220539628U (en) |
-
2023
- 2023-07-13 CN CN202321834872.9U patent/CN220539628U/en active Active
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