Large-span basement multi-stage water guide and drainage structure and construction method
By designing a multi-stage water conduction and drainage structure suspended under the basement structure beam, the problem of water accumulation in the basement is solved, the water conduction and drainage system is optimized, construction convenience and safety are improved, and energy consumption and mechanical losses are reduced.
Patent Information
- Application Number
- CN202510007698.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-03-21
AI Technical Summary
During the construction process, the basement structure has accumulated water due to heavy rain or self-waterproof concrete cracks, which affects the construction progress. The existing temporary drainage methods have problems such as pipeline entanglement, easy damage, and time-consuming and labor-intensive maintenance.
A multi-stage drainage structure for large-span basement is designed, including drainage conduits, drainage branches, tee pipes and water pumps. By hanging the drainage conduits and drainage branches under the structural beam, it is suspended by an expansion hook to form a multi-stage drainage system.
The drainage system is optimized, the problem of messy ground pipeline layout is solved, the safety and construction convenience of the drainage pipeline network are ensured, the pump load and energy consumption are reduced, and the mechanical loss rate is reduced.
Smart Images
Figure CN119663882A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of building construction, and in particular relates to a multi-level drainage structure for a large-span basement and a construction method. Background Art
[0002] During the construction process, due to the special location of the basement structure, the water level at the wellhead will rise during heavy rains, or cracks in the self-waterproof concrete will cause groundwater leakage. These reasons will cause a large amount of water to accumulate in the basement, which will in turn cause problems such as structural floating, affecting the subsequent construction progress of the project.
[0003] Generally speaking, the temporary drainage method for basement structures is to use a water pump to collect water from the precipitation well into the sump, and then pump the water out of the foundation pit from the sump. However, as the design area of the foundation pit increases, the number of designed precipitation wells increases, but the precipitation wells are far apart. In order to maintain the water level of the precipitation well, it is necessary to continuously use a pump pipe to pump water directly to the sump. This drainage method will cause the pump pipes to become entangled on the ground, which not only affects the passage of vehicles and the appearance of the basement, but also makes the water pump and pipeline vulnerable to damage. Once the pipeline is damaged or blocked, it is necessary to fill the water shortage or re-install the plastic pipe, which makes subsequent maintenance and repairs time-consuming and laborious. Therefore, it is urgent to design a multi-level drainage structure for basements. Summary of the invention
[0004] The purpose of the present invention is to solve the deficiencies in the prior art and to provide a multi-stage drainage structure for a large-span basement and a construction method.
[0005] The specific technical solutions adopted by the present invention are as follows:
[0006] In a first aspect, the present invention provides a multi-stage drainage structure for a large-span basement, comprising a drainage conduit, a drainage branch pipe, a tee pipe and a water pump; a plurality of sections of the drainage conduit are respectively hung under the main beam of the basement structure and arranged along the length direction of the main beam; adjacent drainage conduits are connected by a tee pipe; both sides of the tee pipe are respectively sealed and connected to the drainage conduits on both sides by fixing glue, and the other side of the tee pipe is arranged vertically upward;
[0007] The drainage branch pipe is hung under the secondary beam of the basement structure; the water inlet end of the drainage branch pipe is arranged in the precipitation well, and the water inlet end is connected to the water pump in the precipitation well, and the accumulated water in the precipitation well is sucked out by the water pump; the water outlet end of the drainage branch pipe is connected to the three-way pipe between the drainage duct; the water outlet end of the drainage duct closest to the water collection well is connected to the water collection well; the water collection well is connected to the peripheral drainage ditch and the municipal pipeline in turn through pipelines to discharge the accumulated water.
[0008] Preferably, a plurality of expansion hooks are fixed at intervals along the length direction on the lower surface of the main beam; and the drainage duct is hung on the expansion hooks on the lower surface of the main beam through a connecting rope.
[0009] Preferably, the drainage conduit is hung 20 to 30 cm below the main beam to ensure that the ground is barrier-free and construction safety is ensured.
[0010] Preferably, the drainage conduit is a PVC pipe; both sides of the tee pipe are sealed and connected to the PVC pipes on both sides using PVC fixing glue.
[0011] Furthermore, the diameter of the PVC pipe is selected to be 75-100 mm.
[0012] Preferably, a plurality of expansion hooks are fixed at intervals along the length direction on the lower surface of the secondary beam; and the drainage branch pipe is hung on the expansion hooks on the lower surface of the secondary beam.
[0013] Preferably, an expansion hook is fixed every 2 meters on the lower surface of the main beam and the secondary beam.
[0014] Preferably, the drainage branch pipe is a plastic hose.
[0015] Preferably, the height of the vertically upward section of the tee pipe is 30 to 40 cm, ensuring the depth of the drainage branch pipe inserted into the tee pipe.
[0016] In a second aspect, the present invention provides a construction method for the large-span basement multi-stage drainage structure according to the first aspect, comprising the following steps:
[0017] S1: Determine the route of the drainage network in the multi-level drainage structure, including the layout of the drainage conduit and drainage branch pipes;
[0018] S2: Determine the location of the drainage network according to the design drawings and the actual situation on site, and carry out the construction layout of the drainage network on site; lay out the lines in the order of drainage conduits first and then drainage branches, determine the direction and axis position of the pipeline according to the construction drawings, draw lines on the main beam or secondary beam, draw the positioning slope line for pipeline installation, and establish a temporary leveling point;
[0019] S3: After the concrete strength of the main beam and secondary beam structure reaches the design value, expansion hooks are installed at intervals on the lower surface of the main beam and secondary beam; the drainage conduit is suspended by wire and hung under the main beam; the two ends of the tee pipe are fixed between adjacent drainage conduits by fixing glue to form a closed connection to prevent water leakage;
[0020] S4: Hang the drainage branch pipe under the secondary beam; the outlet end of the drainage branch pipe extends vertically to a vertically upward section of the tee pipe between the drainage conduits; the inlet end of the drainage branch pipe is connected to the water pump in the precipitation well;
[0021] S5: After the drainage network is installed, a water-tightness test is carried out. During the water-tightness test, an appearance inspection is carried out. If there is no leakage, the construction of the multi-level drainage structure is completed.
[0022] Compared with the prior art, the present invention has the following beneficial effects:
[0023] (1) The multi-level drainage structure provided by the present invention suspends the drainage conduit and drainage branch pipes under the structural beam, thereby optimizing the drainage system, replacing the traditional ground-laid pipelines, solving the problem of messy ground pipeline layout, and providing convenience for basement construction.
[0024] (2) In the present invention, the drainage conduit and drainage branch pipe are suspended under the structural beam by using expansion hooks and expansion rings to ensure the safety of the drainage network and reduce damage to the basement building structure itself.
[0025] (3) The multi-level drainage structure provided by the present invention 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 pipeline water flow is basically maintained by gravity, which reduces the load on the water pump, reduces energy consumption and mechanical loss rate while accelerating the reduction of the water level in the precipitation well. The multi-level drainage structure is flexible in layout and easy to install and disassemble. The path can be quickly modified according to the actual situation on site, and the disassembled drainage pipe can be recycled for secondary use. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 A schematic diagram of the multi-level drainage structure arrangement provided in this embodiment;
[0027] Figure 2 for Figure 1 A partial enlarged view of
[0028] Figure 3 This is a schematic diagram of the connection between the drainage conduit and the drainage branch pipe in this embodiment;
[0029] In the figure: main beam 1, secondary beam 2, drainage duct 3, drainage branch pipe 4, tee pipe 5, water pump 6, precipitation well 7, collection well 8, peripheral drainage ditch 9. DETAILED DESCRIPTION
[0030] The present invention is further described and illustrated below in conjunction with the accompanying drawings and specific embodiments. The technical features of each embodiment of the present invention can be combined accordingly without conflicting with each other.
[0031] like Figure 1 As shown, as a preferred embodiment of the present invention, this embodiment provides a multi-stage drainage structure for a large-span basement, including a drainage conduit 3, a drainage branch pipe 4, a tee pipe 5 and a water pump 6. The drainage conduit 3 and the drainage branch pipe 4 constitute a drainage network.
[0032] like Figure 2 As shown, in the structure provided by the present invention, several sections of drainage ducts 3 are respectively hung under the main beam 1 of the basement structure, and are arranged along the length direction of the main beam 1. Specifically, several expansion hooks are fixed at intervals along the length direction on the lower surface of the main beam 1. The drainage duct 3 is hung on the expansion hook on the lower surface of the main beam 1 by iron wire. The drainage duct 3 is hung 20 to 30 cm below the main beam 1 to ensure that the ground is barrier-free and to ensure construction safety. In this embodiment, in order to ensure the safety of the drainage duct 3 hanging, an expansion hook is installed every two meters below the main beam 1 to avoid setting the expansion hook at the weak point of the main beam structure and to ensure that the basement structure itself is not damaged.
[0033] like Figure 3 As shown, adjacent drainage conduits 3 are connected by a tee 5. The two sides of the tee 5 are sealed and connected to the drainage conduits 3 on both sides by fixing glue, and the other side of the tee 5 is set vertically upward. The height of the vertical section of the tee 5 needs to be set to 30-40 cm to ensure the depth of the drainage branch pipe 4 inserted into the tee 5.
[0034] like Figure 2 As shown, in the structure provided by the present invention, the drainage branch pipe 4 is hung under the secondary beam 2 of the basement structure. An expansion hook is also installed every two meters along the length direction on 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 water inlet end of the drainage branch pipe 4 is arranged in the precipitation well 7, and the water inlet end is connected to the water pump 6 in the precipitation well 7, and the accumulated water in the precipitation well 7 is sucked by the water pump 6. The water outlet end of the drainage branch pipe 4 is connected to the three-way pipe 5 between the drainage conduit 3. The water outlet end of the drainage conduit 3 closest to the water collection well 8 is connected to the water collection well 8. The water collection well 8 is connected to the peripheral drainage ditch 9 and the municipal pipeline in sequence through pipelines to discharge the accumulated water.
[0035] It should be noted that the above-mentioned arrangement of the drainage branch pipe 4 is suitable for the case where the water collection well 8 is far away from the precipitation well 7. If the water collection well 8 is close to the precipitation well 7, the water inlet end of the drainage branch pipe 4 is still connected to the water pump 6 in the precipitation well 7, but the water outlet end of the drainage branch pipe 4 can be directly connected to the water collection well 8, and the water collection well 8 is then connected to the peripheral drainage ditch 9 and the municipal pipeline in turn through the pipeline to discharge the accumulated water.
[0036] In this embodiment, the drainage conduit 3 adopts a PVC pipe with a diameter of 75 mm. The present invention does not limit the diameter of the drainage conduit 3 used. Those skilled in the art can select a drainage conduit 3 of a suitable diameter according to actual conditions. Generally, a PVC pipe with a diameter in the range of 75 to 100 mm can be used. PVC fixing glue is used to seal and fix the tee pipe 5 between adjacent drainage conduits 3. In this embodiment, the drainage branch pipe 4 adopts a plastic hose. The water outlet end of the plastic hose goes deep into a vertically upward section of the tee pipe 5, and can also be simply fixed with iron wire to ensure that the drainage branch pipe 4 does not fall off when water is discharged.
[0037] A construction method for the above-mentioned large-span basement multi-level drainage structure is provided below, and the steps are as follows:
[0038] Step 1: Determine the route of the drainage network in the multi-level drainage structure, including the layout of the drainage ducts and drainage branches.
[0039] (1) Select the outlet
[0040] The water outlet is selected according to the arrangement and volume of the basement water collection well, elevator shaft, pump room and other spaces with water storage functions, as well as the difficulty of connecting with the peripheral drainage ditch. In this embodiment, the water outlet is selected as the water collection well.
[0041] (2) Determine the drainage control point of the precipitation well
[0042] The drainage control point of the precipitation well is determined before the drainage network route is determined. It is set at the drainage point with large drainage volume and the most impurities, so as to receive sewage as soon as possible and reduce pipe blockage. First, divide the basement into several areas according to the construction joints, and roughly determine the precipitation well area corresponding to the outlet. According to the specific situation on site, draw a circle with the precipitation well as the center and the spacing between the precipitation wells as the diameter to determine the approximate path of the main pipe. A control point can be set at the place where the circles intersect densely. If the water output at this place is large, an additional control point can be set.
[0043] (3) Determine the drainage network route
[0044] When planning the drainage network route, the drainage pipes are arranged in a straight line. When conditions limit it, two 45° elbows or U-shaped bends are used. The main road leads to the outlet at the shortest distance to avoid the drainage pipes being too long, causing blockage, inconvenience in clearing and maintenance, and avoid crossing with structures or other equipment. It must not cross the foundation of production equipment to avoid being affected by equipment vibration or being crushed by heavy objects. When laying out the pipes, they should be laid along the beam edge as much as possible to facilitate the subsequent setting of expansion hooks.
[0045] Step 2: Installation and construction of drainage network.
[0046] (1) Measurement and layout
[0047] Determine the location of the drainage network according to the design drawings and actual on-site conditions, and carry out on-site drainage network construction layout; lay out and locate in the order of drainage duct 3 and then drainage branch pipe 4, determine the direction and axis position of the pipeline according to the construction drawing, draw lines on the main beam 1 or secondary beam 2, draw the positioning slope line for pipeline installation, and establish a temporary leveling point.
[0048] (2) Fix the expansion hook, drainage conduit and drainage branch pipe
[0049] After the structural concrete strength of the main beam 1 and the secondary beam 2 reaches the design value, install expansion hooks at intervals on the lower surface of the main beam 1 and the secondary beam 2; use wire to lift the drainage conduit 3 and hang it under the main beam 1; to ensure that the water flows smoothly to the outlet under the pressure of the end pump and the influence of gravity, start the installation from the port when laying the pipe, and the end of the straight pipe farthest from the outlet should be as flush as possible with the beam bottom elevation, with a slope of 1%. When installing the pipeline, hang a line to find the slope, and determine the material size according to the requirements of the pipe slope. The installation slope should be correct, the slope should be uniform, and it should not be reversed, nor too large to affect the visual effect. Use a laser to ensure that all straight pipes are in the same straight line on the projected horizontal plane.
[0050] The two ends of the tee pipe 5 are fixed between the adjacent drainage conduits 3 by fixing glue, forming a closed connection to prevent water leakage. Before fixing, the surface of the pipe should be cleaned of oil, dirt and other dirt to ensure that the connection is clean, dry and free of water stains.
[0051] Hang the drainage branch pipe 4 under the secondary beam 2; the outlet end of the drainage branch pipe 4 extends vertically to the vertically upward section of the tee pipe 5 between the drainage conduit 3, and extends vertically to the inlet of the tee pipe as much as possible, and use wire to tie the connection point to ensure that the drainage branch pipe 4 does not fall when the water is discharged. The water inlet end of the drainage branch pipe 4 is connected to the water pump 6 in the precipitation well 7; the drainage branch pipe cannot be forcibly combined with the water pump body, and the weight cannot be added to the water pump body.
[0052] Step 3: Water-tightness test.
[0053] After the drainage network is installed, a closed water test is conducted. Before the closed water test, ensure that all pipe connections have been completed and that the concrete components have reached the required strength. During the closed water test, an appearance inspection is conducted. If there is no leakage, the construction of the multi-level drainage structure is completed.
[0054] The multi-level drainage structure provided by the present invention includes three levels of drainage lines:
[0055] The first level is from the collection well to the peripheral drainage ditch. The groundwater is discharged from the outlet to the peripheral drainage ditch, and then discharged into the municipal pipeline after sedimentation and treatment. The second level is from the drainage conduit to the collection well. Through gravity traction and hydraulic pressurization at the end, the water flows along the designed route. The third level is from the precipitation well to the opening of the drainage conduit. When the collection well is far away from the precipitation well, it can be connected to the nearest drainage conduit port through the drainage branch pipe to discharge the accumulated water into the collection well (if the collection well is close to the precipitation well, the drainage branch pipes are connected to the collection well to discharge the accumulated water directly into the collection well).
[0056] The above-described embodiment is only a preferred solution of the present invention, but it is not intended to limit the present invention. A person skilled in the relevant technical field may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present invention.
Claims
1. A multi-level drainage structure for a large-span basement, characterized in that: It comprises a drainage conduit (3), a drainage branch pipe (4), a tee pipe (5) and a water pump (6); a plurality of sections of the drainage conduit (3) are respectively hung below the main beam (1) of the basement structure and arranged along the length direction of the main beam (1); adjacent drainage conduits (3) are connected via tee pipes (5); both sides of the tee pipe (5) are sealed and connected to the drainage conduits (3) on both sides by fixing glue, and the other side of the tee pipe (5) is arranged vertically upward; The drainage branch pipe (4) is hung below the secondary beam (2) of the basement structure; the water inlet end of the drainage branch pipe (4) is arranged in the precipitation well (7), and the water inlet end is connected to the water pump (6) in the precipitation well (7), and the accumulated water in the precipitation well (7) is sucked out by the water pump (6); the water outlet end of the drainage branch pipe (4) is connected to the three-way pipe (5) between the drainage conduit (3); the water outlet end of the drainage conduit (3) closest to the water collection well (8) is connected to the water collection well (8); the water collection well (8) is connected to the peripheral drainage ditch (9) and the municipal pipeline in sequence through pipelines to discharge the accumulated water.
2. The multi-level drainage structure for a large-span basement according to claim 1 is characterized in that: A plurality of expansion hooks are fixed at intervals along the length direction on the lower surface of the main beam (1); and the drainage conduit (3) is hung on the expansion hooks on the lower surface of the main beam (1) via a connecting rope.
3. The multi-level drainage structure for a large-span basement according to claim 1 is characterized in that: The drainage conduit (3) is hung 20 to 30 cm below the main beam (1) to ensure that the ground is free of obstacles and construction safety is ensured.
4. The multi-level drainage structure for a large-span basement according to claim 1 is characterized in that: The drainage conduit (3) is a PVC pipe; the two sides of the tee pipe (5) are respectively sealed and connected to the PVC pipes on both sides by using PVC fixing glue.
5. The multi-level drainage structure for a large-span basement according to claim 4 is characterized in that: The diameter of the PVC pipe is selected to be 75-100 mm.
6. The multi-level drainage structure for a large-span basement according to claim 1 is characterized in that: A plurality of expansion hooks are fixed at intervals along the length direction on the lower surface of the secondary beam (2); and the drainage branch pipe (4) is hung on the expansion hooks on the lower surface of the secondary beam (2).
7. The multi-level drainage structure for a large-span basement according to claim 1 is characterized in that: An expansion hook is fixed to the lower surface of the main beam (1) and the secondary beam (2) every 2 meters.
8. The multi-level drainage structure for a large-span basement according to claim 1 is characterized in that: The drainage branch pipe (4) is a plastic hose.
9. The multi-level drainage structure for a large-span basement according to claim 1, characterized in that: The vertically upward section of the three-way pipe (5) is 30 to 40 cm high, ensuring the depth of the drainage branch pipe (4) inserted into the three-way pipe (5).
10. A construction method for a large-span basement multi-level drainage structure according to any one of claims 1 to 9, characterized in that: The steps are as follows: S1: Determine the route of the drainage pipe network in the multi-level drainage structure, including the layout route of the drainage conduit (3) and the drainage branch pipe (4); S2: Determine the location of the drainage network according to the design drawings and the actual situation on site, and carry out the construction layout of the drainage network on site; lay out and locate the drainage pipe (3) first and then the drainage branch pipe (4) in the order of laying out and locating, determine the direction and axis position of the pipeline according to the construction drawings, draw lines on the main beam (1) or the secondary beam (2), draw the positioning slope line for pipeline installation, and establish a temporary leveling point; S3: After the structural concrete strength of the main beam (1) and the secondary beam (2) reaches the design value, expansion hooks are installed at intervals on the lower surfaces of the main beam (1) and the secondary beam (2); the drainage conduit (3) is lifted by wire and hung under the main beam (1); the two ends of the tee pipe (5) are fixed between adjacent drainage conduits (3) by fixing glue to form a closed connection to prevent water leakage; S4: Hanging the drainage branch pipe (4) below the secondary beam (2); the water outlet end of the drainage branch pipe (4) extends vertically to a vertically upward section of the three-way pipe (5) between the drainage conduits (3); the water inlet end of the drainage branch pipe (4) is connected to a water pump (6) in a precipitation well (7); S5: After the drainage network is installed, a water-tightness test is carried out. During the water-tightness test, an appearance inspection is carried out. If there is no leakage, the construction of the multi-level drainage structure is completed.
Citation Information
Cited By
Comprehensive dewatering and drainage recycling system applied to basement engineering
CN121429014A