Combined structure of drainage closed conduit and tunnel
By placing the drainage culvert inside the tunnel and integrating it with the tunnel roof slab, the construction difficulties and safety risks at the intersection of the drainage culvert and the tunnel were resolved, thereby achieving cost control and improved space utilization.
Patent Information
- Application Number
- CN202520003838.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-01-02
AI Technical Summary
In existing technologies, drainage culverts and planned tunnels conflict spatially, leading to greater difficulty, higher costs, and safety risks in tunnel construction, especially in the lower and later sections of the tunnel, where construction is more challenging due to the deep overburden and high rigidity requirements.
The drainage culvert is installed inside the tunnel, and the tunnel roof slab is cast as one piece with the top of the drainage culvert. Support gaps are opened in the side walls to accommodate the drainage culvert, and a central partition wall and support structure are installed in the tunnel to enhance the support strength.
Reducing tunnel construction depth lowers soil load, reduces construction difficulty and safety risks, improves construction efficiency, and results in a compact structure that enhances the space utilization of municipal facilities.
Smart Images
Figure CN223608587U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to municipal underground engineering technical field, concretely relates to a drainage culvert and tunnel combination structure. BACKGROUND
[0002] The water network is dense in the south area, and the ditch and the canal play an important role in the flood control and drainage function of the city, along with the acceleration of urbanization construction, the city construction presents the stereoscopic, in order to the ground other purposes or beautiful, part water network transports water in the form of culvert. Figure 1 As shown in the structure schematic diagram of general drainage culvert 1, since drainage culvert 1 is non-pressure water transport, the elevation and the trend of conventional drainage culvert 1 cannot be modified. Figure 2 And Figure 3 As shown, facing the problem of drainage culvert 1 and the tunnel 2 conflict in space, the prior art needs to reduce the design elevation of tunnel 2 to avoid drainage culvert 1, Figure 2 Show that drainage culvert 1 and tunnel 2 need to be constructed in sections, also need to dig deeper foundation pit when tunnel 2 is constructed, will cause the major adjustment of tunnel 2 structure, cross section curve, overburden load, construction engineering quantity etc., thereby increase the construction cost and the dangerous factor of construction, increase the construction difficulty.
[0003] Tunnel 2 includes tunnel upper front section 3 and tunnel lower rear section 4, tunnel upper front section 3 and tunnel lower rear section 4 are connected, tunnel 2 needs to go downward below drainage culvert, from tunnel upper front section 3 to tunnel lower rear section 4, the lower part of drainage culvert 1 is tunnel lower rear section 4, the construction difficulty of tunnel lower rear section 4 is higher, the overburden depth of the upper part of tunnel lower rear section 4 is higher, the overburden depth of the roof of tunnel lower rear section 4 is usually 2.1m; At the same time, the stiffness requirement of tunnel roof is very high, the tunnel roof needs to be designed into larger thickness to obtain larger structural stiffness, usually the thickness of tunnel roof here is 1.25m. CONTENT OF UTILITY MODEL
[0004] In view of the technical problems in the prior art, the utility model aims at providing a drainage culvert and tunnel combination structure, setting the drainage culvert on the tunnel roof, reducing the excavation depth of the tunnel in the construction process, reducing the overburden load of the tunnel top, reducing the construction difficulty, avoiding the safety risk of foundation pit collapse in construction.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] A drainage culvert and tunnel combination structure, at the intersection of drainage culvert and tunnel, the drainage culvert is arranged in the tunnel, the tunnel includes tunnel bottom plate, two side walls and tunnel roof connected in turn from bottom to top, the top of drainage culvert is arranged on the tunnel roof, the side wall is provided with support gap, and the drainage culvert passes through the support gap and is located on the support gap.
[0007] As a kind of preferred, at the intersection of drainage culvert and tunnel, the top of drainage culvert is integrally poured with tunnel roof.
[0008] As a kind of preferred, the width of tunnel is 40.8m, and the height is 11.2m; the width of drainage culvert is 15.8m, and the height is 6m.
[0009] As a kind of preferred, drainage culvert includes front drainage culvert body, intersection drainage culvert body and rear drainage culvert body connected in sequence, and the bottom of front drainage culvert body and rear drainage culvert body is provided with cement mixing pile for supporting.
[0010] As a kind of preferred, tunnel mid-part wall is arranged between the middle of tunnel roof and the middle of tunnel floor, and the tunnel mid-part wall extends along the length direction of tunnel, and mid-part wall support notch is arranged on the tunnel mid-part wall, and the intersection drainage culvert body is arranged on the mid-part wall support notch.
[0011] As a kind of preferred, drainage culvert support plate is arranged in the middle of front drainage culvert body, intersection drainage culvert body and rear drainage culvert body, and the drainage culvert support plate extends along the length direction of drainage culvert.
[0012] As a kind of preferred, at the intersection of drainage culvert and tunnel, the side wall of tunnel and tunnel mid-part wall are arranged as load-bearing wall.
[0013] As a kind of preferred, pipe gallery is arranged on the tunnel mid-part wall, and the pipe gallery extends along the length direction of tunnel.
[0014] As a kind of preferred, in the length direction of tunnel, front and rear of the intersection of drainage culvert and tunnel, cross beam is arranged on the inner top surface of tunnel roof.
[0015] As a kind of preferred, at the intersection of drainage culvert and tunnel, vertical section perpendicular to the length direction of drainage culvert is square, and in the length direction of tunnel, the front and rear tunnel roof of square drainage culvert is step support structure respectively.
[0016] The utility model has the following advantages:
[0017] (1) at the intersection of drainage culvert and tunnel, the top of drainage culvert is integrally poured with tunnel roof, compact structure, improve municipal facilities space utilization rate; tunnel does not need to reduce tunnel design elevation to avoid drainage culvert, reduces the excavation depth in the process of construction, is favorable to cost control, avoids the safety risk of foundation pit collapse in construction.
[0018] (2) at the intersection of drainage culvert and tunnel in the utility model, the front and rear tunnel roof of drainage culvert is step support structure, can enhance the support strength of tunnel roof at the intersection of drainage culvert and tunnel, and enhance the support load of tunnel. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of a conventional drainage culvert structure.
[0021] Figure 2 This is a schematic diagram of the existing technology for segmented construction of drainage culverts and tunnels.
[0022] Figure 3 This is a schematic diagram of the structure after the completion of the construction of the intersection of the existing drainage culvert and the tunnel.
[0023] Figure 4 This is a disassembled diagram of the combined drainage culvert and tunnel structure of this utility model.
[0024] Figure 5 This is a schematic diagram of the combined drainage culvert and tunnel structure of this utility model.
[0025] Figure 6 This is a top sectional view of the combined drainage culvert and tunnel structure of Embodiment 2.
[0026] Figure 7 for Figure 6 AA sectional view.
[0027] The components are as follows: 1. Drainage culvert; 2. Tunnel; 3. Upper front section of tunnel; 4. Lower rear section of tunnel; 5. Main body of front drainage culvert; 6. Tunnel roof slab; 7. Tunnel floor slab; 8. Side wall; 9. Support gap; 10. Central partition wall of tunnel; 11. Step support structure; 12. Main body of drainage culvert at intersection; 13. Cement mixing pile; 14. Crossbeam; 15. Support gap of central partition wall; 16. Pipe gallery; 17. Main body of rear drainage culvert; 18. Drainage culvert support plate. Detailed Implementation
[0028] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0029] Example 1
[0030] As Figure 4 to Figure 5 shown, a drainage culvert and tunnel combined structure, at the intersection of the drainage culvert 1 and the tunnel 2, the drainage culvert 1 is arranged inside the tunnel 2; the tunnel 2 comprises a tunnel bottom plate 7, two side walls 8 and a tunnel top plate 6 connected in turn from bottom to top, the tunnel bottom plate 7, the two side walls 8 and the tunnel top plate 6 are casted as a whole, the top of the drainage culvert 1 is arranged on the tunnel top plate 6, the side wall 8 is provided with a support gap 9, and the drainage culvert 1 passes through the support gap 9 and is located on the support gap 9.
[0031] At the intersection of the drainage culvert 1 and the tunnel 2, the top of the drainage culvert 1 is casted as a whole with the tunnel top plate 6, and the overall structure is better.
[0032] The width of the tunnel 2 is preferably 40.8m, and the height is 11.2m; the width of the drainage culvert 1 is 15.8m, and the height is 6m.
[0033] As Figure 6 shown, the drainage culvert 1 comprises a front drainage culvert body 5, an intersection drainage culvert body 12 and a rear drainage culvert body 17 connected in turn, the front drainage culvert body 5, the intersection drainage culvert body 12 and the rear drainage culvert body 17 are casted as a whole, the intersection drainage culvert body 12 is on the support gap 9 of the side wall 8, and the tunnel bottom plate 7, the two side walls 8, the tunnel top plate 6 and the intersection drainage culvert body 12 are casted as a whole.
[0034] The bottom of the tunnel bottom plate 7 is provided with a tunnel support foundation (not shown in the figure), the middle part of the tunnel top plate 6 and the middle part of the tunnel bottom plate 7 are provided with a tunnel partition wall 10, the tunnel partition wall 10 extends along the length direction of the tunnel 2, the tunnel partition wall 10, the tunnel top plate 6 and the tunnel bottom plate 7 are casted as a whole, the tunnel partition wall 10 is provided with a partition wall support gap 15, the intersection drainage culvert body 12 is on the partition wall support gap 15, and the tunnel partition wall 10 and the intersection drainage culvert body 12 are casted as a whole. The bottom of the front drainage culvert body 5 and the rear drainage culvert body 17 is provided with a cement mixing pile 13, the cement mixing pile 13 plays a supporting role, the bottom of the intersection drainage culvert body 12 is not supported by the cement mixing pile 13, and the load of the intersection drainage culvert body 12 is transmitted to the tunnel support foundation through the tunnel 2; the drainage culvert and tunnel combined structure of the utility model, the load transmission route of the intersection drainage culvert body 12 at the intersection of the drainage culvert 1 and the tunnel 2 is: intersection drainage culvert body 12→tunnel top plate 6→side wall 8 and tunnel partition wall 10→tunnel bottom plate 7→tunnel support foundation.
[0035] The utility model discloses a drainage culvert and tunnel combination structure, solved the drainage culvert 1 of prior art and the problem of mutual conflict of tunnel 2 at the intersection, tunnel 2 need not dig down adjustment to avoid drainage culvert 1, ensure that the structure of drainage culvert 1 is not influenced, sometimes need to lift the height of tunnel roof 6 to be consistent with the top height of drainage culvert 1, after lifting the height of tunnel roof 6, the height of tunnel 2 inside increases, the height of the tunnel 2 inside passage of the embodiment increases from 4.5m to 6.7m, there is more space in the top of tunnel 2 to arrange other facilities, for example ventilation facilities, and do not affect the normal use of tunnel 2.
[0036] The middle part of the front drainage culvert main body 5, the intersection drainage culvert main body 12 and the rear drainage culvert main body 17 is poured with a drainage culvert support plate 18, the drainage culvert support plate 18 extends along the length direction of the drainage culvert 1, and the front drainage culvert main body 5, the intersection drainage culvert main body 12 and the rear drainage culvert main body 17 are all box culvert structures.
[0037] At the intersection of the drainage culvert 1 and the tunnel 2, the side wall 8 and the tunnel partition wall 10 of the tunnel 2 are arranged as load-bearing walls, and the load-bearing walls enhance the strength of the tunnel 2 for bearing the intersection drainage culvert main body 12.
[0038] The tunnel partition wall 10 is provided with a pipe gallery 16, the pipe gallery 16 extends along the length direction of the tunnel 2, the pipe gallery 16 can arrange pipelines of infrastructure in the tunnel 2, the pipelines are uniformly arranged, and the appearance inside the tunnel 2 is improved.
[0039] The drainage culvert and tunnel combination structure of the utility model solves the problem of mutual conflict of the drainage culvert 1 and the tunnel 2 at the intersection in the prior art, the tunnel 2 need not be dug down to avoid the drainage culvert 1, the structure of the drainage culvert 1 is not influenced, sometimes the height of the tunnel roof 6 needs to be lifted to be consistent with the top height of the drainage culvert 1, after lifting the height of the tunnel roof 6, the height inside the tunnel 2 is increased, the height of the tunnel 2 inside passage of the embodiment increases from 4.5m to 6.7m, there is more space in the top of the tunnel 2 to arrange other facilities, for example ventilation facilities, and the normal use of the tunnel 2 is not affected.
[0040] The utility model discloses a drainage culvert and tunnel combination structure, solved the problem of mutual conflict of the drainage culvert 1 and the tunnel 2 at the intersection in the prior art, the tunnel 2 need not be dug down to avoid the drainage culvert 1, the structure of the drainage culvert 1 is not influenced, sometimes the height of the tunnel roof 6 needs to be lifted to be consistent with the top height of the drainage culvert 1, after lifting the height of the tunnel roof 6, the height inside the tunnel 2 is increased, the height of the tunnel 2 inside passage of the embodiment increases from 4.5m to 6.7m, there is more space in the top of the tunnel 2 to arrange other facilities, for example ventilation facilities, and the normal use of the tunnel 2 is not affected.
[0041] The implementation principle of the drainage culvert and tunnel combined structure of the utility model is as follows: the drainage culvert 1 and the tunnel 2 are mainly formed by pouring, at the intersection of the drainage culvert 1 and the tunnel 2, first, the cement mixing piles 13 at the bottom of the front drainage culvert main body 5, the cement mixing piles 13 at the bottom of the rear drainage culvert main body 17 and the tunnel support foundation at the intersection are constructed and poured, then, the front drainage culvert main body 5 and the rear drainage culvert main body 17 are constructed and poured, the tunnel floor 7 at the intersection is constructed and poured on the top of the tunnel support foundation, the tunnel middle partition wall 10 and the two side walls 8 are constructed and poured on the tunnel floor 7, the construction formwork is arranged on the support gaps 9 of the side walls 8 and the middle partition wall support gaps 15 to construct and pour the intersection drainage culvert main body 12, and the top of the intersection drainage culvert main body 12 and the tunnel top plate 6 are constructed and poured as a whole.
[0042] Embodiment two
[0043] As shown in Figure 6 and Figure 7 , the difference between the embodiment and the embodiment one is that, in the length direction of the tunnel 2, the front and rear of the intersection of the drainage culvert 1 and the tunnel 2, the cross beam 14 is arranged on the inner top surface of the tunnel top plate 6, the cross beam 14 is constructed and poured as a whole with the tunnel middle partition wall 10, the two side walls 8 and the tunnel top plate 6, and the cross beam 14 further strengthens the strength of the tunnel top plate 6 supporting the intersection drainage culvert main body 12.
[0044] At the intersection of the drainage culvert 1 and the tunnel 2, the vertical section perpendicular to the length direction of the drainage culvert 1 is square, in the length direction of the tunnel 2, the tunnel top plates 6 on the front and rear sides of the square drainage culvert 1 are the step support structures 11 respectively; in the utility model, the tunnel top plates 6 on the front and rear sides of the drainage culvert 1 in the length direction of the tunnel 2 are the step support structures 11, and the step support structures 11 can enhance the support earth load above the tunnel top plate 6.
[0045] The utility model is further described above by means of specific embodiments, but it should be understood that the specific description here should not be understood as the limitation on the essence and scope of the utility model, and various modifications of the above embodiments made by the ordinary skilled in the art after reading the specification all belong to the scope protected by the utility model.
Claims
1. A structure for combining a drainage conduit with a tunnel, characterized by: The drainage culvert (1) is arranged inside the tunnel (2) at the intersection of the drainage culvert (1) and the tunnel (2), the tunnel comprises a tunnel bottom plate (7), two side walls (8) and a tunnel top plate (6) connected in sequence from bottom to top, the top of the drainage culvert (1) is arranged on the tunnel top plate (6), the side wall (8) is provided with a support gap (9), and the drainage culvert (1) passes through the support gap (9) and is located on the support gap (9).
2. The structure according to claim 1, wherein: The top of the drainage culvert (1) is integrally poured with the tunnel top plate (6) at the intersection of the drainage culvert (1) and the tunnel (2).
3. The structure according to claim 2, wherein: The width of the tunnel (2) is 40.8 m, and the height is 11.2 m; the width of the drainage culvert (1) is 15.8 m, and the height is 6 m.
4. The structure according to claim 2, wherein: The drainage culvert (1) comprises a front drainage culvert main body (5), an intersection drainage culvert main body (12) and a rear drainage culvert main body (17) connected in sequence, and the bottom of the front drainage culvert main body (5) and the rear drainage culvert main body (17) is provided with a cement mixing pile (13) for supporting.
5. The structure according to claim 4, wherein: The tunnel middle partition wall (10) is arranged between the middle part of the tunnel top plate (6) and the middle part of the tunnel bottom plate (7), the tunnel middle partition wall (10) extends along the length direction of the tunnel (2), the middle partition wall support gap (15) is arranged on the tunnel middle partition wall (10), and the intersection drainage culvert main body (12) is arranged on the middle partition wall support gap (15).
6. The structure according to claim 4, wherein: The middle part of the front drainage culvert main body (5), the intersection drainage culvert main body (12) and the rear drainage culvert main body (17) is provided with a drainage culvert support plate (18), and the drainage culvert support plate (18) extends along the length direction of the drainage culvert (1).
7. The structure according to claim 5, wherein: At the intersection of the drainage culvert (1) and the tunnel (2), the side wall (8) and the tunnel middle partition wall (10) of the tunnel (2) are arranged as load-bearing walls.
8. The structure according to claim 5, wherein: The tunnel middle partition wall (10) is provided with a pipe gallery (16), and the pipe gallery (16) extends along the length direction of the tunnel (2).
9. The structure according to claim 2, wherein: In the length direction of the tunnel (2), the front and rear of the intersection of the drainage culvert (1) and the tunnel (2) are provided with a cross beam (14) on the inner top surface of the tunnel top plate (6).
10. The structure according to claim 2, wherein: At the intersection of the drainage culvert (1) and the tunnel (2), the vertical section perpendicular to the length direction of the drainage culvert (1) is square, and the front and rear side walls of the square drainage culvert (1) are respectively provided with a stepped support structure (11).