Reinforced concrete beam longitudinal drainage pipe fixing device
By fixing U-bolts through pre-drilled holes in reinforced concrete beams and adjusting the slope and position of drainage pipes using connecting plates and nuts, the problems of difficulty in fixing longitudinal drainage pipes and long installation time were solved, achieving efficient drainage, smooth flow, and stable performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN ROAD & BRIDGE CONSTRUCTION GROUP CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-05-15
AI Technical Summary
The problems include difficulties in fixing longitudinal drainage pipes in reinforced concrete beams, poor drainage, and long installation time.
The system employs a combination of U-bolts and connecting plates. By fixing the U-bolts through pre-drilled holes in the flange plate, the position of the connecting plate is adjusted using the thread length of the U-bolts to ensure the slope and fit of the drainage pipe. The upper and lower nuts are used to fix the position of the connecting plate, achieving stability and adjustability of the longitudinal drainage pipe.
It simplifies the construction process, improves construction efficiency, ensures smooth drainage, adapts to linear inconsistencies, prevents pipe displacement or detachment, and reduces installation time.
Smart Images

Figure CN224243676U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bridge construction technology, and more specifically, it relates to the installation and fixing of longitudinal drainage pipes for reinforced concrete beams. Background Technology
[0002] Bridges crossing urban and rural roads require drainage facilities. Commonly, reinforced concrete main beams use angle steel supports to secure longitudinal drainage pipes. These supports are connected to the beam flanges using expansion bolts, and the drainage pipes are placed on them. This method requires strict control of the expansion bolt positions to avoid interference with the main beam flange reinforcement or steel strands. The angle steel supports also need adjustment to ensure the slope of the longitudinal drainage pipes and unobstructed drainage. Alternatively, for continuous rigid frame main beams with excessively long flange cantilever lengths, pre-embedded steel plates are typically installed during main beam casting. After welding the pre-embedded steel plates to the angle steel supports, the longitudinal drainage pipes are placed on these supports for connection. This method also requires adjustment of the angle steel support height to ensure a consistent drainage pipe slope, and strict control of welding quality to ensure the stability of the angle steel supports. Utility Model Content
[0003] To address the aforementioned technical problems, this utility model provides a longitudinal drainage pipe fixing device for reinforced concrete beams, which solves the issues of difficulty in fixing longitudinal drainage pipes in steel structure bridges, poor drainage, and long installation time. This utility model discloses a longitudinal drainage pipe fixing device for reinforced concrete beams. By utilizing the thread length of the U-bolts, sufficient adjustment space is provided. Adjusting the position of the connecting plates facilitates adjustment of the slope of the longitudinal drainage pipe, ensuring smooth drainage. Simultaneously, the upper and lower connecting plates are precisely bent to the actual diameter of the longitudinal drainage pipe, ensuring a complete fit with the outer wall of the pipe. This also ensures that the weight of the pipe is evenly distributed to the connecting plates, preventing excessive local stress that could lead to deformation of the connecting plates or the pipe. The connecting plates are fixed with upper and lower nuts, ensuring the height of the longitudinal drainage pipe is adjustable. The position of the connecting plates can also be pre-fixed, facilitating the insertion and installation of the drainage pipe, simplifying the workflow and time, and ensuring high construction efficiency.
[0004] This utility model provides a longitudinal drainage pipe fixing device for reinforced concrete beams, which is achieved by the following specific technical means:
[0005] The aforementioned longitudinal drainage pipe fixing device for reinforced concrete beams is characterized in that: according to the location of the drainage hole, a Φ30mm pre-reserved hole is reserved at a suitable position on the flange plate, and a U-bolt is passed through the pre-reserved hole for fixing.
[0006] The aforementioned longitudinal drainage pipe fixing device for steel truss concrete composite beams is characterized in that: the thread length of the U-bolt is 250mm, and the longitudinal drainage pipe is fixed by the upper and lower connecting plates set on the U-bolt. By adjusting the position of the connecting plates, the slope of the longitudinal drainage pipe can be easily adjusted to ensure smooth drainage. At the same time, it can effectively adapt to the drainage difficulties caused by the linear inconsistency caused by the pre-lift value.
[0007] The aforementioned steel truss concrete composite beam longitudinal drainage pipe fixing device is characterized in that: the upper and lower connecting plates are precisely bent according to the actual diameter of the longitudinal drainage pipe to ensure complete fit with the outer wall of the pipe, while the weight of the pipe is evenly transferred to the connecting plates to avoid excessive local stress that could cause deformation of the connecting plates or the pipe.
[0008] The aforementioned longitudinal drainage pipe fixing device for steel truss concrete composite beams is characterized in that: the connecting plate is fixed with upper and lower nuts to ensure that the height of the longitudinal drainage pipe is adjustable, and the position of the connecting plate can be fixed in advance to facilitate the insertion and installation of the drainage pipe. In addition, it ensures the stability of the longitudinal drainage pipe and prevents the pipe from shifting or falling off due to water flow impact or vibration.
[0009] The advantages of this utility model are as follows: This patent discloses a longitudinal drainage pipe fixing device for reinforced concrete beams, which belongs to the field of bridge construction technology and can solve the problems of difficulty in fixing longitudinal drainage pipes of reinforced concrete beams, unsmooth drainage of pipes and long installation time. During the pouring of reinforced concrete beams, Φ30mm pre-drilled holes are made in appropriate positions on the flange plates according to the location of the drainage holes. U-bolts are passed through these holes, and the longitudinal drainage pipes are fixed by upper and lower connecting plates on the U-bolts. The U-bolts have a thread length of 250mm, providing sufficient adjustment space. By adjusting the position of the connecting plates, the slope of the longitudinal drainage pipes can be easily adjusted to ensure smooth drainage. Simultaneously, in the steel truss structure, this effectively adapts to drainage difficulties caused by linear inconsistencies due to pre-lifting values. The upper and lower connecting plates are precisely bent to the actual diameter of the longitudinal drainage pipes to ensure complete fit with the outer wall of the pipes, while also ensuring that the weight of the pipes is evenly distributed to the connecting plates, preventing excessive local stress that could lead to deformation of the connecting plates or pipes. The connecting plates are fixed with upper and lower nuts, ensuring that the height of the longitudinal drainage pipes is adjustable. The position of the connecting plates can also be pre-fixed for easy pipe insertion and installation. Furthermore, this ensures the stability of the longitudinal drainage pipes, preventing displacement or detachment due to water flow impact or vibration. This invention simplifies the workflow and time, ensuring high construction efficiency. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0011] Figure 2 This is a schematic diagram of the U-shaped bolt structure of this utility model.
[0012] Figure 3 This is a schematic diagram of the connecting plate structure of this utility model.
[0013] In the diagram, the correspondence between component names and drawing numbers is as follows:
[0014] 1. Flange plate; 2. Reserved hole; 3. U-bolt; 4. Bolt thread; 5. Connecting plate; 6. Nut; 7. Longitudinal drain pipe. Detailed Implementation
[0015] This utility model provides a longitudinal drainage pipe fixing device for reinforced concrete beams, such as... Figures 1-3 As shown, the drain pipe fixing device includes: flange plate 1, reserved hole 2, U bolt 3, bolt thread 4, connecting plate 5, nut 6, and longitudinal drain pipe 7.
[0016] In the longitudinal drainage pipe fixing device for reinforced concrete beam described in this application: according to the location of the drainage hole, a Φ30mm reserved hole 2 is reserved at a suitable position on the flange plate (1), and the U-bolt 3 is fixed by passing through the reserved hole 2.
[0017] In the longitudinal drainage pipe fixing device for reinforced concrete beams described in this application: the thread length of the U-bolt 4 is 250mm, and the longitudinal drainage pipe 7 is fixed by the upper and lower connecting plates 5 provided on the U-bolt 3. By adjusting the position of the connecting plates 5, the slope of the longitudinal drainage pipe 7 can be easily adjusted to ensure smooth drainage. At the same time, it can effectively adapt to the drainage difficulties caused by the linear inconsistency caused by the pre-lift value.
[0018] In the longitudinal drainage pipe fixing device for reinforced concrete beams described in this application: the upper and lower connecting plates 5 are precisely bent according to the actual diameter of the longitudinal drainage pipe 7 to ensure complete fit with the outer wall of the pipe, while the weight of the pipe is evenly transferred to the connecting plates 5 to avoid excessive local stress that could cause deformation of the connecting plates or pipes.
[0019] In the longitudinal drainage pipe fixing device for reinforced concrete beams described in this application: the connecting plate 5 is fixed with upper and lower nuts 6 to ensure that the height of the longitudinal drainage pipe 7 is adjustable. At the same time, the position of the connecting plate 5 can be fixed in advance to facilitate the insertion and installation of the drainage pipe 7. In addition, it ensures the stability of the longitudinal drainage pipe 7 and prevents the pipe from shifting or falling off due to water flow impact or vibration.
[0020] Based on the location of the drain hole, a Φ30mm hole 2 is reserved at a suitable position on the flange plate 1, and the U-bolt 3 is passed through the reserved hole 2 for fixing.
[0021] The U-bolt thread 4 is 250mm long. The longitudinal drain pipe 7 is fixed by the upper and lower connecting plates 5 set on the U-bolt 3. By adjusting the position of the connecting plates 5, the slope of the longitudinal drain pipe 7 can be easily adjusted to ensure smooth drainage. At the same time, it can effectively adapt to the drainage difficulties caused by the linear inconsistency caused by the pre-lift value.
[0022] The upper and lower connecting plates 5 are precisely bent according to the actual diameter of the longitudinal drain pipe 7 to ensure complete fit with the outer wall of the pipe, while also ensuring that the weight of the pipe is evenly distributed to the connecting plates 5, avoiding excessive local stress that could cause deformation of the connecting plates or pipes.
[0023] The connecting plate 5 is fixed with upper and lower nuts 6 to ensure that the height of the longitudinal drain pipe 7 is adjustable. At the same time, the position of the connecting plate 5 can be fixed in advance to facilitate the insertion and installation of the drain pipe 7. In addition, it ensures the stability of the longitudinal drain pipe 7 and prevents the pipe from shifting or falling off due to water flow impact or vibration.
Claims
1. A device for fixing longitudinal drainage pipes in reinforced concrete beams, characterized in that: The drain pipe fixing device includes: flange plate (1), reserved hole (2), U bolt (3), bolt thread (4), connecting plate (5), nut (6), and longitudinal drain pipe (7); Reserve a Φ30mm hole (2) at a suitable position on the flange plate (1), and fix the U-bolt (3) through the reserved hole (2); The length of the U-bolt thread (4) is 250mm. The longitudinal drainage pipe (7) is fixed by the upper and lower connecting plates (5) set on the U-bolt (3). By adjusting the position of the connecting plate (5), the slope of the longitudinal drainage pipe (7) can be adjusted to ensure smooth drainage. At the same time, it can effectively adapt to the drainage difficulties caused by the linear inconsistency caused by the pre-lift value.
2. The longitudinal drainage pipe fixing device for reinforced concrete beams as described in claim 1, characterized in that: The upper and lower connecting plates (5) are precisely bent according to the actual diameter of the longitudinal drainage pipe (7) to ensure that they fit completely against the outer wall of the pipe. At the same time, the weight of the pipe is evenly transferred to the connecting plates (5) to avoid excessive local stress that could cause deformation of the connecting plates or pipes.
3. The longitudinal drainage pipe fixing device for reinforced concrete beams as described in claim 2, characterized in that: The connecting plate (5) is fixed with upper and lower nuts (6) to ensure that the height of the longitudinal drain pipe (7) is adjustable. At the same time, the position of the connecting plate (5) can be fixed in advance to facilitate the insertion and installation of the drain pipe (7). In addition, it ensures that the longitudinal drain pipe (7) is stable and prevents the pipe from shifting or falling off due to water flow impact or vibration.