Large-span basement multi-stage water guide and drainage structure
By suspending a multi-stage drainage system under the structural beams of the basement, the problem of inconvenient drainage of basement water was solved, achieving safe and efficient drainage while reducing mechanical load and energy consumption.
Patent Information
- Application Number
- CN202520009345.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-01-03
AI Technical Summary
During construction, basements may accumulate water due to heavy rain or cracks in the self-waterproofing concrete. Existing drainage methods can easily lead to pipe entanglement and damage, affecting construction progress and safety.
Design a multi-stage drainage structure for a large-span basement, using drainage pipes, branch pipes, and tees suspended below the structural beams and fixed with expansion hooks to form a multi-stage drainage system. Combined with water pumps and municipal pipelines, it can achieve safe and rapid discharge of accumulated water.
The drainage system has been optimized, reducing cluttered ground pipelines, minimizing mechanical wear, improving construction convenience and safety, reducing energy consumption, and offering a flexible and recyclable structure.
Smart Images
Figure CN223647077U_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of building construction technology, specifically relating to a multi-stage drainage structure for a large-span basement. Background Technology
[0002] During construction, due to the unique location of the basement structure, the water level at the wellhead may rise during heavy rain, or cracks in the self-waterproofing concrete may cause groundwater leakage. These factors can lead to significant water accumulation in the basement, causing structural uplift and other problems that affect the subsequent construction progress.
[0003] Typically, temporary drainage in basement structures involves pumping water from dewatering wells into a sump, which is then pumped out of the pit. However, as the pit area increases, the number of dewatering wells also increases, but these wells are often spaced far apart. To maintain the water level in the wells, water must be continuously pumped directly to the sump. This drainage method causes the pump pipes to become tangled and intertwined on the ground, affecting vehicle traffic and the basement's appearance, and also making the pumps and pipes susceptible to damage. Damage or blockages require patching the leaks or re-laying plastic pipes, resulting in time-consuming and labor-intensive maintenance. Therefore, a multi-stage drainage structure for basements is urgently needed. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies and provide a multi-stage drainage structure for large-span basements.
[0005] The specific technical solution adopted in this utility model is as follows:
[0006] This utility model provides a multi-stage drainage structure for a large-span basement, including drainage pipes, drainage branch pipes, tee pipes and water pumps; several drainage pipes are respectively hung below the main beam of the basement structure and arranged along the length of the main beam; adjacent drainage pipes are connected by tee pipes; the two sides of the tee pipe are sealed to the drainage pipes on both sides with fixing glue, and the other side of the tee pipe is set vertically upward;
[0007] The drainage branch pipe is suspended below the secondary beam of the basement structure; the inlet end of the drainage branch pipe is set in the dewatering well, and the inlet end is connected to the water pump in the dewatering well to draw water from the dewatering well; the outlet end of the drainage branch pipe is connected to the tee pipe between the drainage conduit and the drainage pipe; the outlet end of the drainage conduit closest to the sump is connected to the sump; the sump is connected to the external drainage ditch and municipal pipeline in sequence through pipes to discharge the accumulated water.
[0008] Preferably, a number of expansion hooks are fixed at intervals along the length of the lower surface of the main beam; the drainage conduit is hung on the expansion hooks on the lower surface of the main beam by a connecting rope.
[0009] Preferably, the drainage pipe is installed 20-30cm below the main beam to ensure unobstructed ground and construction safety.
[0010] Preferably, the drainage conduit is made of PVC pipe.
[0011] Furthermore, the two sides of the tee are sealed and connected to the PVC pipes on both sides using PVC fixing adhesive.
[0012] Furthermore, the diameter of the PVC pipe is selected to be 75-100mm.
[0013] Preferably, a number of expansion hooks are fixed at intervals along the length of the lower surface of the secondary beam; the drainage branch pipe is hung on the expansion hooks on the lower surface of the secondary beam.
[0014] Preferably, an expansion hook is fixed every 2 meters on the lower surface of the main beam and the secondary beam.
[0015] Preferably, the drainage branch pipe is made of plastic flexible hose.
[0016] Preferably, the vertical section of the tee pipe is 30-40cm high to ensure the depth to which the drainage branch pipe is inserted into the tee pipe.
[0017] Compared with the prior art, this utility model has the following advantages:
[0018] (1) The multi-stage drainage structure provided by this utility model suspends the drainage pipe and drainage branch pipe below the structural beam, optimizes the drainage system, replaces the traditional ground-layout pipeline, solves the problem of messy ground pipeline layout, and provides convenience for basement construction.
[0019] (2) In this utility model, the drainage pipe and drainage branch pipe are suspended below the structural beam by using expansion hooks and tightening rings to ensure the safety of the drainage network and reduce damage to the basement building structure itself.
[0020] (3) The multi-stage drainage structure provided by this utility model is not affected by the complex main structure and construction process, and can collect and transport accumulated water in a timely and safe manner. The movement of water in the pipeline is mainly maintained by gravity, which reduces the load on the water pump. While accelerating the reduction of the water level in the dewatering well, it also reduces energy consumption and mechanical wear rate. This multi-stage drainage structure is flexible in layout, easy to install and disassemble, and the path can be quickly modified according to the actual site conditions. The disassembled drainage pipes can be recycled and reused. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the multi-stage drainage structure arrangement provided in this embodiment;
[0022] Figure 2 for Figure 1 A magnified view of a portion of the image;
[0023] Figure 3 This is a schematic diagram of the connection between the drainage conduit and the drainage branch pipe in this embodiment;
[0024] In the diagram: 1. Main beam; 2. Secondary beam; 3. Drainage conduit; 4. Drainage branch pipe; 5. Tee pipe; 6. Water pump; 7. Dewatering well; 8. Water collection well; 9. External drainage ditch. Detailed Implementation
[0025] The present invention will be further described and illustrated below with reference to the accompanying drawings and specific embodiments. The technical features of each embodiment of the present invention can be combined accordingly, provided that there is no mutual conflict.
[0026] like Figure 1 As shown, in a preferred embodiment of this utility model, this embodiment provides a multi-stage drainage structure for a large-span basement, including a drainage conduit 3, drainage branch pipes 4, a tee pipe 5, and a water pump 6. The drainage conduit 3 and drainage branch pipes 4 constitute a drainage network.
[0027] like Figure 2 As shown, in the structure provided by this utility model, several drainage pipe sections 3 are respectively hung below the main beam 1 of the basement structure and arranged along the length of the main beam 1. Specifically, several expansion hooks are fixed at intervals along the length of the lower surface of the main beam 1. The drainage pipes 3 are hung on the expansion hooks on the lower surface of the main beam 1 by wires, and the drainage pipes 3 are hung 20-30cm below the main beam 1 to ensure unobstructed ground and construction safety. In this embodiment, in order to ensure the safe suspension of the drainage pipes 3, an expansion hook is installed every two meters below the main beam 1 to avoid setting expansion hooks at weak points in the main beam structure and to ensure that the basement structure itself is not damaged.
[0028] like Figure 3 As shown, adjacent drain pipes 3 are connected by a T-shaped pipe 5. Both sides of the T-shaped pipe 5 are sealed to the drain pipes 3 on both sides with adhesive, and the other side of the T-shaped pipe 5 is vertically upward. The vertical section of the T-shaped pipe 5 needs to be 30-40cm high to ensure the drain branch pipe 4 is inserted to the depth of the T-shaped pipe 5.
[0029] like Figure 2As shown, in the structure provided by this utility model, the drainage branch pipe 4 is hung below the secondary beam 2 of the basement structure. An expansion hook is also installed every two meters along the length of the lower surface of the secondary beam 2, and the drainage branch pipe 4 is hung on the expansion hook on the lower surface of the secondary beam 2. The inlet end of the drainage branch pipe 4 is located in the dewatering well 7, and the inlet end is connected to the water pump 6 inside the dewatering well 7, through which the water pump 6 draws water from the dewatering well 7. The outlet end of the drainage branch pipe 4 is connected to the tee pipe 5 between the drainage conduit 3 and the drainage pipe 3. The outlet end of the drainage conduit 3 closest to the collection well 8 is connected to the collection well 8. The collection well 8 is connected to the external drainage ditch 9 and the municipal pipeline in sequence through pipes to discharge the accumulated water.
[0030] It should be noted that the above-mentioned setting method of drainage branch pipe 4 is applicable when the distance between the collection well 8 and the dewatering well 7 is relatively far. If the distance between the collection well 8 and the dewatering well 7 is relatively close, the inlet end of the drainage branch pipe 4 is still connected to the water pump 6 in the dewatering well 7, but the outlet end of the drainage branch pipe 4 can be directly connected to the collection well 8. The collection well 8 is then connected to the external drainage ditch 9 and the municipal pipeline in sequence through pipes to discharge the accumulated water.
[0031] In this embodiment, the drain conduit 3 is a PVC pipe with a diameter of 75mm. This invention does not limit the diameter of the drain conduit 3 used; those skilled in the art can select a suitable diameter drain conduit 3 according to actual conditions. Generally, a PVC pipe with a diameter in the range of 75-100mm can be used. Adjacent drain conduits 3 are sealed and fixed to the tee pipe 5 using PVC adhesive. In this embodiment, the drain branch pipe 4 is a plastic flexible hose. The outlet end of the plastic flexible hose extends into the vertically upward section of the tee pipe 5, or it can be simply fixed with wire to ensure that the drain branch pipe 4 does not fall off when water is discharged.
[0032] The following is a construction method for the above-mentioned multi-stage drainage structure for large-span basements, comprising the following steps:
[0033] Step 1: Determine the drainage network route in the multi-stage drainage structure, including the layout of drainage conduits and drainage branch pipes.
[0034] (1) Select the outlet
[0035] The outlet is selected based on the layout and volume of water storage spaces such as basement sump pits, elevator shafts, and pump rooms, as well as the ease of connection with external drainage ditches. In this embodiment, the outlet is selected as the sump pit.
[0036] (2) Determine the drainage control points of the dewatering wells
[0037] Drainage control points for dewatering wells are determined before the drainage network route is finalized. They are located at drainage points with high drainage volume and the most impurities to facilitate rapid sewage reception and reduce pipe blockage. First, the basement is divided into several areas based on construction joints, roughly determining the dewatering well areas corresponding to the outlets. Based on the specific site conditions, circles are drawn with the dewatering wells as the center and the distance between them as the diameter. The approximate route of the main pipe is determined, and a control point can be set where the circles intersect closely. If the outflow is large at that location, an additional control point can be added.
[0038] (3) Determine the drainage pipe network route
[0039] When planning the drainage network route, drainage pipes should be laid out in a straight line. When conditions are limited, two 45° bends or Z-bends should be used. The main road should lead to the outlet in the shortest possible distance to avoid problems such as blockage and inconvenience in cleaning and maintenance due to excessively long drainage pipes. Pipes should avoid crossing structures or other equipment, and must not pass through the foundations of production equipment to avoid being affected by equipment vibration or damaged by heavy objects. Pipes should be laid along the edges of beams as much as possible to facilitate the subsequent installation of expansion hooks.
[0040] Step 2: Drainage pipe network installation.
[0041] (1) Measurement and setting out
[0042] Determine the location of the drainage network based on the design drawings and actual site conditions, and conduct on-site drainage network construction layout; follow the order of first drainage conduit 3 and then drainage branch pipe 4 to lay out the positioning, determine the direction and axis position of the pipeline according to the construction drawings, mark the positioning slope line of the pipeline installation on the main beam 1 or secondary beam 2, and establish temporary benchmarks.
[0043] (2) Fix the expansion hook, drainage pipe and drainage branch pipe.
[0044] After the concrete strength of the main beam 1 and secondary beam 2 reaches the design value, expansion hooks are installed at intervals on the lower surface of the main beam 1 and secondary beam 2. Drainage pipe 3 is suspended by wire and hung below the main beam 1. To ensure that the water flows smoothly to the outlet under the pressure of the end pump and gravity, installation should begin from the end of the pipe. The farthest end of the straight pipe from the outlet should be flush with the bottom elevation of the beam, with a slope of 1%. A plumb line should be used to determine the slope during pipe installation, and the cutting dimensions should be determined according to the required pipe slope. The installation slope should be correct, uniform, and consistent, avoiding reverse slopes or excessive slopes that would affect the appearance. A laser instrument is used to ensure that all straight pipes are on the same straight line on the projected horizontal plane.
[0045] The two ends of the tee pipe 5 are fixed between the adjacent drain pipes 3 with adhesive to form a sealed connection to prevent water leakage. Before fixing, the surface of the pipes should be cleaned of oil, dirt and other contaminants to ensure that the connection is clean, dry and free of water stains.
[0046] Hang the drainage branch pipe 4 below the secondary beam 2; extend the outlet end of the drainage branch pipe 4 vertically to the vertically upward section of the tee pipe 5 between the drainage conduit 3, extending it as vertically as possible to the inlet of the tee pipe, and secure the connection point with wire to ensure that the drainage branch pipe 4 does not fall off when discharging water. Connect the inlet end of the drainage branch pipe 4 to the water pump 6 in the dewatering well 7; the drainage branch pipe must not be forcibly combined with the water pump body, and its weight must not be added to the water pump body.
[0047] Step 3: Water tightness test.
[0048] After the drainage pipe network is installed, a water tightness test is conducted. Before the water tightness test, ensure that all pipe connections are completed and that the concrete components have reached the required strength. During the water tightness test, a visual inspection is performed. If no leakage is found, the multi-stage drainage structure construction is considered complete.
[0049] The multi-stage drainage structure provided by this utility model includes three-stage drainage lines:
[0050] The first level is from the sump to the outer drainage ditch. Groundwater is discharged from the outlet to the outer drainage ditch, and after sedimentation and treatment, it is discharged into the municipal pipeline. The second level is from the drainage conduit to the sump. Through gravity traction and hydraulic pressurization at the end, the water flows along the designed route. The third level is from the dewatering well to the opening of the drainage conduit. When the sump is far from the dewatering well, the water can be discharged into the sump through the nearest drainage conduit port via a drainage branch pipe (if the sump is close to the dewatering well, the drainage branch pipe is connected to the sump, and the water is discharged directly into the sump).
[0051] The embodiments described above are merely preferred solutions of this utility model, and are not intended to limit the scope of this utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this utility model. Therefore, all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.
Claims
1. A multi-stage drainage structure for a large-span basement, characterized in that, It includes a drainage pipe (3), a drainage branch pipe (4), a tee pipe (5) and a water pump (6); several drainage pipe sections (3) are respectively hung below the main beam (1) of the basement structure and arranged along the length of the main beam (1); adjacent drainage pipes (3) are connected by a tee pipe (5); the two sides of the tee pipe (5) are respectively sealed to the drainage pipes (3) on both sides with fixing glue, and the other side of the tee pipe (5) is set vertically upward; The drainage branch pipe (4) is hung below the secondary beam (2) of the basement structure; the inlet end of the drainage branch pipe (4) is set in the dewatering well (7), and the inlet end is connected to the water pump (6) in the dewatering well (7) to draw water from the dewatering well (7); the outlet end of the drainage branch pipe (4) is connected to the tee pipe (5) between the drainage conduit (3); the outlet end of the drainage conduit (3) closest to the collection well (8) is connected to the collection well (8); the collection well (8) is connected to the outer drainage ditch (9) and the municipal pipeline in sequence through the pipeline to discharge the accumulated water.
2. The multi-stage drainage structure for large-span basements according to claim 1, characterized in that, Several expansion hooks are fixed at intervals along the length of the lower surface of the main beam (1); the drainage pipe (3) is hung on the expansion hooks on the lower surface of the main beam (1) by a connecting rope.
3. The multi-stage drainage structure for large-span basements according to claim 1, characterized in that, The drainage pipe (3) is hung 20-30cm below the main beam (1) to ensure that the ground is unobstructed and to ensure construction safety.
4. The multi-stage drainage structure for large-span basements according to claim 1, characterized in that, The drainage conduit (3) is made of PVC pipe.
5. The multi-stage drainage structure for large-span basements according to claim 4, characterized in that, The two sides of the tee pipe (5) are sealed to the PVC pipes on both sides with PVC fixing glue.
6. The multi-stage drainage structure for large-span basements according to claim 4, characterized in that, The diameter of the PVC pipe is selected to be 75-100mm.
7. The multi-stage drainage structure for large-span basements according to claim 1, characterized in that, Several expansion hooks are fixed at intervals along the length of the lower surface of the secondary beam (2); the drainage branch pipe (4) is hung on the expansion hooks on the lower surface of the secondary beam (2).
8. The multi-stage drainage structure for a large-span basement according to claim 1, characterized in that, An expansion hook is fixed every 2 meters on the lower surface of the main beam (1) and the secondary beam (2).
9. The multi-stage drainage structure for large-span basements according to claim 1, characterized in that, The drainage branch pipe (4) is made of plastic flexible hose.
10. The multi-stage drainage structure for a large-span basement according to claim 1, characterized in that, The vertical section of the tee pipe (5) is 30-40cm high to ensure the depth to which the drainage branch pipe (4) is inserted into the tee pipe (5).