Urban pipe network water supply and drainage pipe reinforcing anti-seismic structure
By laying a medium-coarse sand cushion layer and a concrete stabilizing body in the pipe trench, combined with flexible connections, the problems of misalignment and leakage of water supply and drainage pipes during earthquakes were solved, achieving higher seismic stability.
Patent Information
- Application Number
- CN202423208577.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing urban water supply and drainage pipes are prone to displacement, breakage, and leakage at connections under external impacts such as earthquakes, resulting in poor earthquake resistance.
A medium-coarse sand cushion layer is laid in the pipe trench, a concrete stabilizing body is set around the water supply and drainage pipe, and a plain soil backfill layer and a top medium sand layer are filled in. A flexible waterproof layer and flexible pipe joints are used to connect them to form a multi-layer composite stabilizing structure.
It improves the stability of water supply and drainage pipes, avoids displacement and leakage at connections, and enhances earthquake resistance.
Smart Images
Figure CN223893493U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of urban pipeline water supply and drainage engineering technology, and in particular provides a reinforced seismic structure for urban pipeline water supply and drainage. Background Technology
[0002] Water supply and drainage pipes are an important part of urban pipe networks. Water supply and drainage pipeline engineering is a pipe (channel) system engineering for transporting and distributing industrial water supply and domestic drinking water, as well as collecting, transporting and discharging industrial wastewater, domestic sewage and rainwater.
[0003] Currently, water supply and drainage pipes in buildings are directly buried in pipe trenches and backfilled with soil. The pipe fittings are rigidly connected. This results in poor seismic resistance, making the pipes prone to displacement, breakage at connections, and leaks when subjected to external impacts such as earthquakes. This affects normal use and can even completely disable the water supply and drainage system. Utility Model Content
[0004] Based on this, the present invention provides a reinforced seismic structure for urban water supply and drainage pipes, which solves problems such as displacement and leakage at connection points of water supply and drainage pipes when subjected to external impacts such as earthquakes, thereby increasing the stability of drainage pipes and improving seismic resistance.
[0005] To achieve the above objectives, this utility model provides a reinforced and earthquake-resistant structure for urban water supply and drainage pipes. A medium-coarse sand cushion layer is laid at the bottom of the trench, and the water supply and drainage pipe is laid at the center of the trench's cross-section. A concrete stabilizing body is located around the perimeter of the water supply and drainage pipe, extending along the length of the pipe and supported at its bottom by the medium-coarse sand cushion layer. A buffer support structure is filled between the outside of the concrete stabilizing body and the slope of the trench. The buffer support structure includes a plain soil backfill layer and a top medium sand layer. The plain soil backfill layer fills the space between the concrete stabilizing body above the medium-coarse sand cushion layer and the slope of the trench. The upper surface of the plain soil backfill layer is lower than the top surface of the top cast-in-place layer. The top medium sand layer covers the surfaces of the top cast-in-place layer and the plain soil backfill layer. This structure can solve problems such as pipe displacement and leakage at connections during external impacts like earthquakes, increasing the stability of the drainage pipes and improving earthquake resistance.
[0006] Furthermore, the cross-section of the concrete stabilizer is square, the water supply and drainage pipe is arranged at the center of the square structure, and the width and height of the concrete stabilizer are more than 1.5 times the outer diameter of the water supply and drainage pipe.
[0007] Furthermore, the concrete stabilizer includes a bottom pouring layer and an upper pouring layer. The bottom pouring layer is flush with the bottom of the water supply and drainage pipe and supports the bottom of the water supply and drainage pipe. The upper pouring layer is located above the bottom pouring layer and covers and supports the part of the water supply and drainage pipe other than the bottom. The bottom pouring layer and the upper pouring layer are poured separately. The upper surface of the bottom pouring layer is roughened before pouring to form a rough surface.
[0008] Furthermore, longitudinal flexible waterproof layers are continuously adhered to both sides of the connection joint between the bottom and upper pouring layers on the outer surface of the concrete stabilized body. The medium-coarse sand cushion layer is located on the outer side of the bottom of the concrete stabilized body and fills upwards to the upper surface of the bottom pouring layer.
[0009] Furthermore, the concrete stabilizer is provided with an expansion joint every 10-30 meters along the length of the water supply and drainage pipe. The expansion joints are staggered with the pipe joints of the water supply and drainage pipe, and the distance between the expansion joints and the pipe joints of the water supply and drainage pipe is not less than 3 meters. A circumferential flexible waterproof layer is attached to the concrete stabilizer at the expansion joint.
[0010] Furthermore, the water supply and drainage pipe is a double-walled corrugated pipe with a ring stiffness of not less than 8kN / m². The pipe connections utilize a socket-type flexible rubber structure, and the inspection wells for the water supply and drainage pipes are made entirely of plastic. The pipe joints of the water supply and drainage pipes are connected via flexible pipe fittings, which are equipped with corrugated flexible expansion joints capable of axial expansion and contraction. The concrete stabilizing body located at the flexible pipe fittings is covered with a flexible inner lining layer.
[0011] Furthermore, the cross-section of the trench is trapezoidal, the angle between the side slope and the bottom plane of the trench is in the range of 120-150°, the width of the bottom of the trench is more than 3 times the diameter of the water supply and drainage pipe, and the depth of the trench is more than 2 times the diameter of the water supply and drainage pipe.
[0012] The technical effects of the provided urban water supply and drainage pipe reinforcement and seismic-resistant structure are reflected in:
[0013] The water supply and drainage pipes are laid at the center of the cross-section of the trench. A concrete stabilizing body is set around the water supply and drainage pipes inside the trench. A medium-coarse sand cushion layer is laid at the bottom of the trench to provide stable support for the bottom of the concrete stabilizing body. An outer layer of plain soil backfill and a top layer of medium sand provide stable support for the outer perimeter of the concrete stabilizing body. The combined effect of the above structures on the water supply and drainage pipes forms a multi-layered composite and stable seismic resistance, which avoids problems such as displacement, misalignment, and leakage at the connection points of the water supply and drainage pipes during external impacts such as earthquakes. This increases the stability of the drainage pipes and improves the seismic resistance. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this disclosure 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 disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the cross-section of the urban water supply and drainage pipe reinforcement and seismic-resistant structure.
[0016] Figure 2 It is a longitudinal sectional view of the connection between the water supply and drainage pipe and the concrete stable body.
[0017] 1-Water supply and drainage pipe; 22-Socket type flexible rubber structure;
[0018] 21-Bottom pouring layer, 22-Upper pouring layer, 23-Expansion joint;
[0019] 31- Plain soil backfill layer, 32- Top medium sand layer, 33- Medium-coarse sand cushion layer;
[0020] 41-Slope, 42-Ditch bottom. Detailed Implementation
[0021] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. The description of exemplary embodiments is merely illustrative and is in no way intended to limit this disclosure or its application or use. This disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully express the scope of this disclosure to those skilled in the art.
[0022] like Figure 1 and Figure 2As shown, this utility model provides a reinforced and earthquake-resistant structure for urban water supply and drainage pipes. A medium-coarse sand cushion layer 33 is laid at the bottom 42 of the pipe trench. The water supply and drainage pipe 1 is laid at the center of the cross-section of the pipe trench. A concrete stabilizing body is provided around the water supply and drainage pipe 1 in the pipe trench. The concrete stabilizing body extends along the length of the water supply and drainage pipe 1 and is supported at its bottom by the medium-coarse sand cushion layer 33. A buffer support body is filled between the outside of the concrete stabilizing body and the slope 41 of the pipe trench. The buffer support body includes a plain soil backfill layer 31 and a top medium sand layer 32. The plain soil backfill layer 31 fills the space between the concrete stabilizing body above the medium-coarse sand cushion layer 33 and the slope 41 of the pipe trench. The upper surface of the plain soil backfill layer 31 is lower than the top surface of the top poured layer. The top medium sand layer 32 covers the surfaces of the top poured layer and the plain soil backfill layer 31. The cross-section of the trench is trapezoidal, the angle between the slope 41 and the bottom 42 is 120-150°, the width of the bottom 42 is more than 3 times the diameter of the water supply and drainage pipe 1, and the depth of the trench is more than 2 times the diameter of the water supply and drainage pipe 1.
[0023] The water supply and drainage pipe 1 is laid at the center of the cross-section of the pipe trench. A concrete stabilizing body is set around the water supply and drainage pipe 1 inside the pipe trench. A medium-coarse sand cushion layer is laid at the bottom of the pipe trench to form a stable support for the bottom of the concrete stabilizing body. The outer filling layer 31 of plain soil and the top medium sand layer 32 form a stable support for the outer perimeter of the concrete stabilizing body. The above structure works together to form a multi-layer composite stable seismic effect, which avoids problems such as displacement and misalignment of the water supply and drainage pipe 1, disconnection and leakage at the connection point, etc. when subjected to external impact forces such as earthquakes. This increases the stability of the drainage pipe and improves the seismic resistance.
[0024] In some embodiments, the concrete stabilizer has a square cross-section, with the drainage pipe 1 positioned at the center of the square structure. The width and height of the concrete stabilizer are each at least 1.5 times the outer diameter of the drainage pipe 1. The concrete stabilizer includes a bottom pouring layer 21 and an upper pouring layer 22. The bottom pouring layer 21 is flush with the bottom of the drainage pipe 1 and supports its bottom. The upper pouring layer 22 is positioned above the bottom pouring layer 21 and covers and supports the portion of the drainage pipe 1 other than its bottom. The bottom pouring layer 21 and the upper pouring layer 22 are poured separately. The upper surface of the bottom pouring layer 21 is roughened before pouring to form a rough surface. Longitudinal flexible waterproof layers are continuously adhered to both sides of the joint between the bottom pouring layer 21 and the upper pouring layer 22 on the outer surface of the concrete stabilizer. The medium-coarse sand cushion layer 33 is located on the outer side of the bottom of the concrete stabilizer and extends upwards to above the upper surface of the bottom pouring layer 21.
[0025] Along the length of the water supply and drainage pipe 1, an expansion joint 23 is provided every 10-30 meters along the length of the water supply and drainage pipe 1. The expansion joint 23 is staggered with the pipe joint of the water supply and drainage pipe 1, and the distance between the expansion joint 23 and the pipe joint of the water supply and drainage pipe 1 is not less than 3 meters. A circumferential flexible waterproof layer is adhered to the concrete stabilization body at the expansion joint 23. This provides a waterproof effect.
[0026] During project implementation, the water supply and drainage pipe 1 is a double-walled corrugated pipe with a ring stiffness of not less than 8 kN / m². The pipe connections utilize a socket-type flexible rubber structure 11, and the inspection well for the water supply and drainage pipe 1 is an all-plastic structure. The pipe joints of the water supply and drainage pipe 1 are connected via flexible pipe joints, which are equipped with corrugated flexible expansion joints capable of axial expansion and contraction. The concrete stabilizing body located at the flexible pipe joint is covered with a flexible inner lining. This flexible connection provides a buffering effect, preventing breakage due to impact.
[0027] The provided structure is a reinforced seismic structure for urban water supply and drainage pipes. The water supply and drainage pipes are stabilized in the pipe trench by a concrete stabilizer. The concrete stabilizer is stably supported by a bottom medium-coarse sand cushion layer 33, a soil backfill layer 31, and a top medium sand layer 32. Flexible connections are used between pipe fittings, which makes the water supply and drainage pipes have good seismic resistance. When subjected to external impacts such as earthquakes, there will be no problems such as displacement or leakage at the connection points. It has broad application prospects.
[0028] This solution addresses issues such as pipe displacement and leakage at connections during earthquakes and other external impacts, increasing the stability of drainage pipes and improving their earthquake resistance.
[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the cantilever lateral suspended platform of this utility model is not limited to the above-described embodiments, and its construction method is to select a suitable method according to the actual site conditions. Various other forms of products can be derived from any of these inspirations, but regardless of any changes in shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.
Claims
1. A seismic-resistant reinforcement structure for urban water supply and drainage pipes, characterized in that: The bottom (42) of the trench is covered with a medium-coarse sand cushion layer (33). The water supply and drainage pipe (1) is laid at the center of the cross-section of the trench. The trench is surrounded by a concrete stabilizer. The concrete stabilizer extends along the length of the water supply and drainage pipe (1) and is supported at the bottom by the medium-coarse sand cushion layer (33). The trench is located between the outside of the concrete stabilized body and the slope (41) and is filled with a buffer support body. The buffer support body includes a plain soil backfill layer (31) and a top medium sand layer (32). The plain soil backfill layer (31) is filled between the concrete stabilized body above the medium and coarse sand cushion layer (33) and the slope (41) of the trench. The upper surface of the plain soil backfill layer (31) is lower than the top surface of the top poured layer. The top medium sand layer (32) covers the surface of the top poured layer and the plain soil backfill layer (31).
2. The urban water supply and drainage pipe reinforcement and seismic-resistant structure according to claim 1, characterized in that: The cross-section of the concrete stabilizer is square, and the water supply and drainage pipe (1) is arranged at the center of the square structure. The width and height of the concrete stabilizer are more than 1.5 times the outer diameter of the water supply and drainage pipe (1).
3. The urban water supply and drainage pipe reinforcement and seismic-resistant structure according to claim 1 or 2, characterized in that: The concrete stabilizer includes a bottom pouring layer (21) and an upper pouring layer (22). The bottom pouring layer (21) is flush with the bottom of the water supply and drainage pipe (1) and supports the bottom of the water supply and drainage pipe (1). The upper pouring layer (22) is set above the bottom pouring layer (21) and covers and supports the part of the water supply and drainage pipe (1) other than the bottom. The bottom pouring layer (21) and the upper pouring layer (22) are poured separately. The upper surface of the bottom pouring layer (21) is roughened before pouring to form a rough surface.
4. The urban water supply and drainage pipe reinforcement and seismic-resistant structure according to claim 3, characterized in that: The outer surface of the concrete stabilizer is continuously covered with longitudinal flexible waterproof layers on both sides of the joint between the bottom pouring layer (21) and the upper pouring layer (22).
5. The urban pipeline network water supply and drainage pipe reinforcement and seismic-resistant structure according to claim 3, characterized in that: The medium-coarse sand cushion layer (33) is located on the outer side of the bottom of the concrete stabilizer and fills upward to the upper surface of the bottom pouring layer (21).
6. The urban water supply and drainage pipe reinforcement and seismic-resistant structure according to claim 3, characterized in that: The concrete stabilizer is provided with an expansion joint (23) every 10-30 meters along the length of the water supply and drainage pipe (1). The expansion joint (23) is staggered with the pipe joint of the water supply and drainage pipe (1). The distance between the expansion joint (23) and the pipe joint of the water supply and drainage pipe (1) is not less than 3 meters. The concrete stabilizer is attached with a circumferential flexible waterproof layer at the expansion joint (23).
7. The urban water supply and drainage pipe reinforcement and seismic-resistant structure according to claim 1 or 6, characterized in that: The water supply and drainage pipe (1) is a double-wall corrugated pipe with a pipe ring stiffness of not less than 8kN / m², and the pipe connection uses a socket-type rubber flexible structure (11).
8. The urban water supply and drainage pipe reinforcement and seismic-resistant structure according to claim 7, characterized in that: The pipe joint of the water supply and drainage pipe (1) is connected by a flexible pipe joint. The flexible pipe joint is equipped with a corrugated flexible expansion joint that can be axially expanded and deformed. The concrete stabilizer is provided with a flexible inner lining layer at the flexible pipe joint.
9. The urban water supply and drainage pipe reinforcement and seismic-resistant structure according to claim 1, characterized in that: The cross-section of the trench is trapezoidal, the angle between the slope (41) and the bottom (42) plane is 120-150°, the width of the bottom (42) is more than 3 times the diameter of the water supply and drainage pipe (1), and the depth of the trench is more than 2 times the diameter of the water supply and drainage pipe (1).