Crossed construction structure for highway drainage pipe pipelines
By setting up bottom supports for the lower and upper pipes at the intersection of highway drainage pipes, and combining this with the design of the foundation pit bottom cushion layer, backfill layer, and steel mesh, a stable overall structure is formed, which solves the problem of insufficient support at the pipe intersection and improves the connection stability and safety of the pipes.
Patent Information
- Application Number
- CN202423192018.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-24
AI Technical Summary
The existing technology lacks sufficient support at the intersections of highway drainage pipelines, which makes the pipelines prone to damage, collapse or breakage, posing safety hazards.
The design adopts a combination of lower and upper pipe bottom support bases, combined with the foundation pit bottom cushion layer, backfill layer and steel mesh, and forms an integral structure through concrete pouring to enhance the support stability.
It effectively prevents pipe damage and collapse, enhances the connection stability and safety of intersecting pipes, and ensures the normal operation of the highway drainage system.
Smart Images
Figure CN223621018U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of highway drainage construction technology, specifically to a construction structure for cross-construction of highway drainage pipes. Background Technology
[0002] Highway drainage networks are part of highway construction and also an important component of municipal drainage. Municipal drainage systems are divided into several types, such as domestic sewage, industrial wastewater, and rainwater. Highway drainage networks belong to the rainwater system. Due to the independent setup of each drainage system, pipe crossings are inevitable.
[0003] Currently, the method of simply backfilling with sand and gravel to support the pipes during pipeline intersections is insufficient to provide effective support. This can easily lead to damage, collapse, or even breakage of the pipes, posing certain safety hazards to highway drainage.
[0004] Therefore, this utility model proposes a novel cross structure for highway drainage pipelines. Utility Model Content
[0005] In order to solve the problems existing in the prior art, this utility model provides a construction structure for the cross-construction of highway drainage pipes with a reasonable structural design.
[0006] The technical solution of this utility model is as follows:
[0007] A cross-construction structure for highway drainage pipes includes a lower-level pipe and an upper-level pipe. The lower-level pipe is installed in a foundation pit, and a lower-level pipe bottom support is provided at the bottom of the lower-level pipe. The lower-level pipe and the upper-level pipe are arranged in a cross-sectional manner, and an upper-level pipe bottom support is provided between the lower-level pipe and the upper-level pipe. The lower-level pipe and the upper-level pipe are supported by the upper-level pipe bottom support.
[0008] Furthermore, the lower pipe bottom support is a precast support, and the upper pipe bottom support is a cast-in-place support.
[0009] Furthermore, a bottom cushion layer is provided at the bottom of the foundation pit, and the bottom support seat of the lower pipeline is set on the bottom cushion layer; the bottom cushion layer can effectively ensure the flatness of the bottom support seat of the lower pipeline and ensure the installation of the lower pipeline.
[0010] Furthermore, a backfill layer is provided around the lower pipe above the bottom support of the lower pipe, and the top of the backfill layer exceeds the top elevation of the lower pipe, while the perimeter of the backfill layer is flush with the side of the bottom support of the lower pipe.
[0011] Furthermore, a steel mesh is laid on top of the backfill layer as an internal support bar for the bottom support of the upper pipeline, and the steel mesh covers an area beyond the backfill layer, effectively ensuring the support of the bottom support of the upper pipeline.
[0012] Furthermore, the concrete poured into the foundation pit forms a concrete grouting layer, which on the one hand creates a backfill space above the lower pipeline, and on the other hand strengthens the load-bearing capacity of the entire structure.
[0013] Furthermore, a wood chip board is installed inside the foundation pit between the concrete grouting layer and the side wall of the bottom support seat of the lower pipeline. The wood chip board is used for expansion and contraction control of different pouring interfaces.
[0014] The beneficial effects of this utility model are as follows:
[0015] 1) This utility model effectively supports the lower pipe by setting a lower pipe bottom support base at the bottom of the lower pipe, and effectively supports the upper pipe by setting an upper pipe bottom support base at the bottom of the upper pipe.
[0016] 2) This utility model sets a backfill layer around the lower pipe and sets a steel mesh on the backfill layer to improve the stability of the cast-in-place structure of the bottom support of the upper pipe.
[0017] 3) This utility model involves pouring concrete in the foundation pit to connect the upper and lower pipes into a whole, effectively protecting the pipe crossing points. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall internal structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the AA cross-sectional structure of this utility model;
[0020] In the diagram: 1. Bottom cushion layer of the foundation pit; 2. Bottom support for the lower pipeline; 3. Lower pipeline; 4. Backfill layer; 5. Upper pipeline; 6. Reinforcing mesh; 7. Concrete grouting layer; 8. Wood chipboard; 9. Bottom support for the upper pipeline; 10. Foundation pit. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings.
[0022] like Figure 1-2 As shown, a cross-construction structure for highway drainage pipes includes a lower-level pipe 3 and an upper-level pipe 5, with the lower-level pipe 3 and the upper-level pipe 5 arranged in a cross-shaped pattern.
[0023] The lower pipe 3 is set inside the foundation pit 10. The bottom of the foundation pit 10 is provided with a foundation pit bottom cushion 1. The foundation pit bottom cushion 1 is provided with a lower pipe bottom support 2. The lower pipe 3 rests on the lower pipe bottom support 2. The top of the lower pipe bottom support 2 is concave arc-shaped for positioning the lower pipe 3. In this embodiment, the lower pipe bottom support 2 is a precast support. In other embodiments, a cast-in-place structure can also be used.
[0024] A backfill layer 4 is provided above the bottom support 2 of the lower pipeline. In this embodiment, the backfill layer 4 is backfilled with sand. The top of the backfill layer 4 exceeds the top elevation of the lower pipeline, and the perimeter of the backfill layer 4 is flush with the side of the bottom support 2 of the lower pipeline.
[0025] A steel mesh 6 is laid on top of the backfill layer 4. The steel mesh 6 is composed of longitudinal and transverse steel bars tied together. The coverage area of the steel mesh 6 slightly exceeds the range of the backfill layer 4. After the formwork is erected and the concrete is poured, the bottom support seat 9 of the upper pipe is formed. In this embodiment, the bottom support seat 9 of the upper pipe adopts a cast-in-place structure. After the casting is completed, the shape and structure of the bottom support seat 2 of the lower pipe are consistent.
[0026] The outer walls on both sides of the foundation pit 10 are inclined. Concrete (plain concrete) is poured into the foundation pit 10 to form a concrete grouting layer 7. The top elevation of the concrete grouting layer 7 is flush with the bottom elevation of the upper pipeline 5.
[0027] Since the lower pipe bottom support 2 in this embodiment is a precast support, a wood chip board 8 is installed in the foundation pit 10 between the concrete grouting layer 7 and the side wall of the lower pipe bottom support 2 to ensure normal expansion and contraction of the precast and cast-in-place interface.
[0028] Construction process:
[0029] First, a foundation pit bottom cushion layer 1 is set at the bottom of the foundation pit 10. Then, the lower pipe bottom support 2 is set on the foundation pit bottom cushion layer 1, and the lower pipe 3 is placed on the lower pipe bottom support 2.
[0030] Formwork is erected above the bottom support 2 of the lower pipe to form a backfill space above the bottom support 2 of the lower pipe. Oil-impregnated wood chipboard is then installed on the side of the bottom support 2 of the lower pipe, and concrete is poured into the pit 10. After the concrete has solidified, the formwork is removed.
[0031] Sand is used to backfill the space above the bottom support 2 of the lower pipeline. After the backfill layer is completed, steel mesh 6 is laid on the backfill layer 4, and then the bottom support 9 of the upper pipeline is cast.
[0032] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.
Claims
1. A construction structure for cross-construction of highway drainage pipes, comprising a lower-level pipe (3) and an upper-level pipe (5), characterized in that, The lower pipe (3) is set in the foundation pit (10). The bottom of the lower pipe (3) is provided with a lower pipe bottom support (2). The lower pipe (3) is set on the lower pipe bottom support (2). The lower pipe (3) and the upper pipe (5) are arranged in a crisscross pattern. The lower pipe (3) and the upper pipe (5) are provided with an upper pipe bottom support (9) between the lower pipe (3) and the upper pipe (5). The lower pipe (3) and the upper pipe (5) are supported by the upper pipe bottom support (9).
2. The construction structure for the intersection of highway drainage pipes according to claim 1, characterized in that, The lower pipe bottom support (2) is a precast support, and the upper pipe bottom support (9) is a cast-in-place support.
3. The construction structure for the intersection of highway drainage pipes according to claim 1, characterized in that, The bottom of the foundation pit (10) is provided with a foundation pit bottom cushion layer (1), and the lower pipeline bottom support seat (2) is set on the foundation pit bottom cushion layer (1).
4. The construction structure for the intersection of highway drainage pipes according to claim 1, characterized in that, A backfill layer (4) is provided around the lower pipe (3) above the lower pipe bottom support (2), and the top of the backfill layer (4) exceeds the top elevation of the lower pipe, and the backfill layer (4) is flush with the side of the lower pipe bottom support (2).
5. The construction structure for the intersection of highway drainage pipes according to claim 4, characterized in that, A steel mesh (6) is laid on top of the backfill layer (4) as an internal support bar for the bottom support of the upper pipeline, and the coverage of the steel mesh (6) extends beyond the backfill layer (4).
6. The construction structure for cross-construction of highway drainage pipes according to claim 1, characterized in that, Concrete is poured into the foundation pit (10) to form a concrete grouting layer (7), and wood chipboard (8) is installed in the foundation pit (10) between the concrete grouting layer (7) and the side wall of the lower pipeline bottom support seat (2).