Anti-floating structure of basement bottom plate
By setting up blind grooves and maintenance wells on the outside of the basement exterior wall and setting up automatic water discharge and pressure relief devices indoors, a complete anti-floating system is formed, which solves the problems of complexity and high cost of construction of traditional anti-floating anchors in large basements, and achieves efficient and economical anti-floating effect.
Patent Information
- Application Number
- CN202422210206.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-09-10
AI Technical Summary
In the construction of large basements, when the groundwater level is uneven and the external seepage is inconsistent, the traditional anti-floating anchor structure can easily lead to the ineffective use of some anchors, increasing construction complexity and cost.
A basement floor anti-floating structure is designed. By setting up a connected blind groove and maintenance well on the outside of the basement exterior wall, and setting up an automatic water discharge and pressure relief device and pre-embedded water discharge components in the room, a complete anti-floating system is formed, and automatic pressure relief is achieved by using the automatic water discharge and pressure relief device.
By integrating precipitation measures, this structure forms an anti-floating system with automatic completion functions, which reduces the use of steel, reduces construction costs and time, and is suitable for anti-floating structures with low groundwater levels.
Smart Images
Figure CN222962131U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of basement structure design, and relates to an anti-floating structure for a basement floor slab. Background Technique
[0002] When the basement floor slab is higher than the original ground or the groundwater level is relatively low, in order to avoid the basement floor slab from arching and cracking under the action of water pressure, a pressure relief device and an automatic dewatering device are arranged on the basement floor slab; blind ditches are arranged around the outer wall to intercept external rainwater and external seepage water, so as to avoid external seepage water flowing into the bottom of the basement floor slab, causing a sudden increase in the groundwater level and reducing the water discharge pressure of the pressure relief device.
[0003] In the past building design process, generally, 5m anchor rods are driven into the bottom of the raft foundation, and the end of the anchor rod steel bar is connected with the raft foundation steel bar as a whole, and the friction force between the anchor rod and the soil layer is relied on to resist the bottom water pressure, so that sufficient anti-floating capacity can be generated at each part of the floor slab.
[0004] However, when the building area is too large, the groundwater level is unevenly distributed, and the degree of external seepage is inconsistent, using anti-floating anchor rods is likely to cause some to be ineffective, resulting in waste; and using anti-floating anchor rods requires adding a large number of anchor rod driving and grouting processes, which will greatly increase the working cycle. Content of the Utility Model
[0005] The utility model provides an anti-floating structure for a basement floor slab, which includes a basement floor slab and an exterior basement wall connected to the basement floor slab. There are several exterior basement blind ditches on the outer side surrounded by the exterior basement wall. A plurality of inspection wells are arranged at intervals on the outer side surrounded by the exterior basement wall. Several exterior basement blind ditches are all communicated with the inspection wells, and one of the inspection wells at the lowest part of the site is connected to the municipal pipe network;
[0006] The exterior basement blind ditch is located on the outer side of the exterior basement wall. A basement floor slab is horizontally arranged at the bottom of the exterior basement wall. An indoor drainage ditch and a sump are arranged on the basement floor slab. The indoor drainage ditch is communicated with the sump; a plurality of groups of automatic water discharge and pressure relief devices and embedded water discharge components are also arranged in the indoor drainage ditch; the embedded water discharge component includes a water discharge pipe connecting the underground soil body and the indoor drainage ditch and a water stop ring arranged on the water discharge pipe. At least one water stop ring is arranged on the water discharge pipe.
[0007] Optionally, a single group of the automatic water discharge and pressure relief device is arranged in the water discharge pipe, and a single group of the automatic water discharge and pressure relief device includes a pressure hammer, a water filter bag and a filter cylinder;
[0008] A hammer handle is installed on the lower end surface of the pressure hammer, and the hammer handle is arranged in a round steel bar structure;
[0009] A filter cartridge is also provided on the central axis position of the pressure hammer and the hammer handle, and multi-stage filter materials are installed in the filter cartridge;
[0010] A water filter bag is also provided at one end of the filter cartridge away from the indoor drainage ditch, and clay and gravel are placed inside the water filter bag.
[0011] Optionally, a seal is also provided between the hammer handle and the basement floor slab.
[0012] Optionally, a rubber pad is also provided between the pressure hammer and the bottom surface of the indoor drainage ditch.
[0013] Optionally, the pressure hammer is set to be composed of at least two steel plates of 10cm * 10cm * 2cm stacked together.
[0014] Optionally, the external blind ditch of the basement includes a ditch body, a corrugated pipe arranged in the ditch body, and a number of water discharge holes arranged on the corrugated pipe;
[0015] The corrugated pipe is arranged in the middle part of the ditch body; the number of water discharge holes are arranged on the upper half of the corrugated pipe and are arranged in a plum blossom shape.
[0016] Optionally, an anti-filter layer is wrapped outside the corrugated pipe, and the anti-filter layer is composed of a unidirectional permeable geotextile and a filled sand cushion layer;
[0017] The unidirectional permeable geotextile is wrapped on the corrugated pipe;
[0018] The filled sand cushion layer includes a sand cushion layer arranged under the corrugated pipe and a natural gravel layer arranged above the corrugated pipe.
[0019] Optionally, a C15 concrete cushion layer and a cohesive soil backfill layer are successively provided at the bottom of the external blind ditch of the basement.
[0020] Optionally, the outer wall of the inspection well is set as a concrete structure, and a concrete cushion layer is provided at the bottom. The corrugated pipe of the external blind ditch of the basement passes through the outer wall of the inspection well, and the corrugated pipe and the outer wall of the inspection well are fixedly connected to each other by a consolidation method.
[0021] Compared with the prior art, the utility model has the following beneficial effects:
[0022] The utility model mainly integrates various precipitation measures to form a complete anti-floating system among them. Each system complements each other and can automatically complete its respective functional requirements. An automatic drainage and pressure relief device structure is set to achieve automatic pressure relief. The structure of the automatic drainage and pressure relief device is simple and reliable in function, and can be applied to anti-floating structures with relatively low groundwater levels. Through reasonable layout according to the distribution of groundwater, the steel consumption is much less than that of anti-floating anchor construction. In addition to the inspection well and the sump requiring concrete, there is no other masonry material in other parts. Most of the materials are ordinary sand and gravel, and the construction cost is low. Moreover, the utility model can be constructed together with the basement without separately planning the construction time of the anti-floating structure, and the construction speed is fast.
[0023] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The following will refer to the drawings to further elaborate on the utility model in detail. Brief Description of the Drawings
[0024] The drawings forming a part of this application are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation to the utility model. In the drawings:
[0025] Figure 1 is a schematic diagram of an anti-floating structure of a basement floor of the utility model;
[0026] Figure 2 is Figure 1 a partial sectional view of the blind ditch outside the basement in ;
[0027] Figure 3 is Figure 1 a partial sectional view of the inspection well and the blind ditch outside the basement after being connected to each other in ;
[0028] Figure 4 is Figure 1 a sectional view of the automatic drainage and pressure relief device in ;
[0029] Figure 5 is Figure 1 a sectional view of the indoor drainage ditch and the sump after being connected to each other in.
[0030] Wherein:
[0031] 1. Sump well, 1.1 Automatic water pump, 1.2 Rainwater drain pipe, 1.3 Support hanger, 2. Inspection well, 3. Exterior basement wall, 4. HDPE pipe, 5. Exterior basement blind ditch, 5.1 Bellows pipe, 5.2 Filter layer, 6. Interior drainage ditch, 7. Automatic drain and pressure relief device, 7.1 Pressure hammer, 8. Basement floor slab, 9. C15 concrete cushion, 10. Cohesive soil backfill layer, 11. Basement roof slab. Detailed implementation manners
[0032] To make the above objects, features, and advantages of the present utility model more clearly understood, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. It should be noted that the accompanying drawings of the present utility model are all in simplified forms and use non-precise scales, only for conveniently and clearly assisting in the description of the implementation of the present utility model; the several mentioned in the present utility model are not limited to the specific quantities in the attached drawing examples; the orientation or positional relationships indicated by 'front','middle', 'back', 'left', 'right', 'up', 'down', 'top', 'bottom','middle', etc. in the present utility model are all based on the orientation or positional relationships shown in the accompanying drawings of the present utility model, and do not indicate or imply that the devices or components referred to must have a specific orientation, nor can it be understood as a limitation to the present utility model.
[0033] Embodiment:
[0034] See Figures 1 to 4 As shown, a basement floor slab anti-floating structure provided by the present utility model includes an exterior basement wall 3. There is a continuous exterior basement blind ditch 5 on the outer side surrounded by the exterior basement wall 3. Inspection wells 2 are provided at the outer corners surrounded by the exterior basement wall 3 and every 60 m. A number of exterior basement blind ditches 5 are all interconnected with the inspection wells 2. One of the inspection wells 2 at the lowest point of the site is connected to the municipal pipe network through an HDPE pipe 4, and the intercepted water is drained into the municipal pipe network by gravity; the exterior basement blind ditch 5 is located outside the exterior basement wall 3. A basement floor slab 8 is horizontally provided at the bottom of the exterior basement wall 3. An interior drainage ditch 6 and a sump well 1 are provided on the basement floor slab 8. The interior drainage ditch 6 includes a first interior drainage ditch and a second interior drainage ditch. One ends of the first interior drainage ditch and the second interior drainage ditch both extend to the exterior basement wall 3, and the other ends of the first interior drainage ditch and the second interior drainage ditch are both connected to a sump well 1; At least one set of automatic drain and pressure relief devices 7 are also provided at the bottom of the first interior drainage ditch and the second interior drainage ditch according to the groundwater pressure situation.
[0035] Preferably, the exterior basement blind ditch 5 includes a ditch body, a bellows pipe 5.1 arranged in the ditch body, and a number of drain holes arranged on the bellows pipe 5.1; the bellows pipe 5.1 is arranged in the middle of the ditch body; the number of drain holes are arranged on the upper half of the bellows pipe 5.1 and are arranged in a plum blossom shape.
[0036] Further, a filter layer 5.2 is wrapped around the outside of the corrugated pipe 5.1. The filter layer 5.2 is preferably composed of a unidirectional permeable geotextile and a sand cushion layer. The unidirectional permeable geotextile is wrapped around the corrugated pipe 5.1, and the sand cushion layer includes a 200-mm-thick sand cushion layer arranged under the corrugated pipe 5.1 and a natural gravel layer arranged above the corrugated pipe 5.1.
[0037] Furthermore, a C15 concrete cushion layer 9 and a cohesive soil backfill layer 10 are successively arranged at the bottom of the blind ditch 5 outside the basement.
[0038] Preferably, the outer wall of the inspection well 2 is of a concrete structure and a concrete cushion is provided at the bottom. The corrugated pipe 5.1 of the blind ditch 5 outside the basement passes through the outer wall of the inspection well 2, and the corrugated pipe 5.1 and the outer wall of the inspection well 2 are fixedly connected to each other by a consolidation method.
[0039] Preferably, the automatic drainage and pressure relief device 7 provided in the indoor drainage ditch 6 is arranged at a position where the basement floor 8 is greatly affected by the groundwater pressure. Specifically, as shown in Figure 5 As shown, a sump 1 is provided at the end of the indoor drainage ditch 6. An automatic water pump 1.1 is arranged inside the sump 1. The top of the automatic water pump 1.1 is connected to a rainwater drainage pipe 1.2, and the rainwater drainage pipe 1.2 is suspended under the basement roof 11 by a support hanger 1.3.
[0040] Further, an automatic drainage and pressure relief device 7 and a pre-embedded drainage component are also provided in the indoor drainage ditch 6. The pre-embedded drainage component includes a drainage pipe communicating with the underground soil mass and the indoor drainage ditch 6 and a water stop ring arranged on the drainage pipe. At least one water stop ring is arranged on the drainage pipe. A single set of the automatic drainage and pressure relief device 7 is arranged in the drainage pipe, and a single set of the automatic drainage and pressure relief device 7 includes a pressure hammer 7.1, a water filter bag 7.3 and a filter cylinder. The pressure hammer is preferably of a steel plate pad structure. Specifically, the pressure hammer can be set to be composed of at least two steel plates of 10 cm * 10 cm * 2 cm stacked according to actual needs. A hammer handle is installed on the lower end surface of the pressure hammer 7.1. The hammer handle is preferably of a round steel bar structure. A filter cylinder is also arranged on the central axis position of the pressure hammer and the hammer handle. Multistage filter materials are installed in the filter cylinder. A water filter bag 7.3 is also arranged at one end of the filter cylinder away from the indoor drainage ditch 6. The water filter bag 7.3 is internally provided with clay and gravel.
[0041] Further, a seal 7.2 is also arranged between the drainage pipe and the basement floor 8 to fixedly connect the drainage pipe and the basement floor 8 and prevent groundwater from seeping into the basement floor 8.
[0042] Further, a rubber pad is also provided between the pressure hammer 7.1 and the bottom of the indoor drainage ditch 6 to seal and stop water between the pressure hammer 7.1 and the indoor drainage ditch 6 through the rubber pad.
[0043] Further, the pressure hammer 7.1 belongs to and is fixedly connected to the hammer handle, and the hammer handle is slidably connected to the water discharge pipe.
[0044] Preferably, the catch basin 1 is arranged at the end of the indoor drainage ditch 6 and at one end of the bottom of the indoor drainage ditch 6.
[0045] Further, an automatic water pump 1.1 is also provided in the catch basin 1. The automatic water pump is fixedly connected to the rainwater drain pipe 1.2 through a pipe, and the rainwater drain pipe 1.2 is fixedly connected to the basement top plate 11 through a support hanger 1.3.
[0046] The working principle of the single-group automatic water discharge and pressure reduction device 7 is specifically as follows:
[0047] When the water pressure in the underground soil mass is too high, water flows through the filter bag 7.3 and passes through the water discharge holes and the filter cylinder respectively. Through the multi-stage filtering materials arranged in the filter cylinder and the filtering of the filter bag 7.3, it is possible to prevent the underground soil mass from blocking the water discharge holes. When the groundwater surges to the position of the pressure hammer 7.1, due to the sealing of the rubber pad and the self-weight of the pressure hammer 7.1, the pressure hammer 7.1 cannot be pushed open when the water pressure is insufficient, which can prevent the rapid loss of groundwater and cause holes in the underground soil mass; during the installation of the safety device, the number of steel plates of the pressure hammer 7.1 can also be increased or decreased to control the water discharge pressure; the function of the hammer handle is to ensure that the opening of the pressure hammer 7.1 is always on the vertical axis of the hammer handle, and it will not cause the deviation of the pressure hammer 7.1 and affect the sealing effect of the rubber pad;
[0048] The automatic control drainage system (the automatic control drainage system specifically includes a catch basin and an indoor drainage ditch) can be arranged at the end of the indoor drainage ditch 6 or at the low point of the basement floor 8 structure according to the trend of the indoor drainage ditch 6, so as to facilitate the collection of basement water and the pressure relief water of the automatic water discharge and pressure reduction device 7. This system mainly leads the water flow into the catch basin. An automatic water pump 1.1 is installed at a certain height in the catch basin 1. When the water in the catch basin 1 reaches the specified depth, the automatic water pumping is started, and the water is pumped into the rainwater drain pipe 1.2 under the basement top plate 11 and discharged into the municipal pipe network through the building's rainwater drain pipe.
[0049] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A basement floor anti-floating structure, characterized in that: The basement comprises a basement floor (8) and a basement outer wall (3) connected to the basement floor (8), wherein the outer side of the basement outer wall (3) is provided with a plurality of basement outer blind ditches (5), and the outer side of the basement outer wall (3) is provided with a plurality of inspection wells (2) arranged at intervals from each other, wherein the plurality of basement outer blind ditches (5) are interconnected with the inspection wells (2), and one of the inspection wells (2) at the lowest point of the site is interconnected with the municipal pipe network; The basement external blind ditch (5) is located outside the basement outer wall (3); a basement floor (8) is horizontally arranged at the bottom of the basement outer wall (3); an indoor drainage ditch (6) and a water collection well (1) are arranged on the basement floor (8); the indoor drainage ditch (6) and the water collection well (1) are interconnected; a plurality of groups of automatic water discharge and pressure reducing devices (7) and pre-buried drainage components are also arranged in the indoor drainage ditch (6); the pre-buried drainage components include a drainage pipe connecting the underground soil and the indoor drainage ditch (6) and a water stop ring arranged on the drainage pipe, and at least one water stop ring is arranged on the drainage pipe.
2. The basement floor anti-floating structure according to claim 1 is characterized in that: A single set of the automatic water-draining and pressure-reducing device (7) is arranged in a water-draining pipeline, and the single set of the automatic water-draining and pressure-reducing device (7) comprises a pressure hammer (7.1), a water filter bag (7.3) and a filter cartridge; A hammer handle is installed on the lower end surface of the pressure hammer (7.1), and the hammer handle is set as a round steel bar structure; A filter cartridge is also provided at the center axis position of the pressure hammer (7.1) and the hammer handle, wherein a multi-stage filter material is contained in the filter cartridge; A water filter bag (7.3) is also provided on one end of the filter cartridge away from the indoor drainage ditch (6), wherein the water filter bag (7.3) contains pottery clay and gravel.
3. The basement floor anti-floating structure according to claim 2 is characterized in that: A seal (7.2) is also provided between the hammer handle and the basement floor (8).
4. The basement floor anti-floating structure according to claim 3 is characterized in that: A rubber pad is also provided between the pressure hammer (7.1) and the bottom surface of the indoor drainage ditch (6).
5. The basement floor anti-floating structure according to claim 3 is characterized in that: The pressure hammer (7.1) is configured by stacking at least two steel plates of 10cm*10cm*2cm.
6. The anti-floating structure of the basement floor according to any one of claims 1 to 5, characterized in that: The basement external blind ditch (5) comprises a ditch body, a corrugated pipe (5.1) arranged in the ditch body, and a plurality of drainage holes arranged on the corrugated pipe (5.1); The bellows (5.1) is arranged in the middle part of the ditch body; the plurality of drainage holes are arranged on the upper half of the bellows (5.1) and are arranged in a plum blossom shape.
7. The basement floor anti-floating structure according to claim 6, characterized in that: An inverted filter layer (5.2) is wrapped outside the corrugated pipe (5.1), and the inverted filter layer (5.2) comprises a one-way permeable geotextile and a sand cushion layer; The one-way permeable geotextile is wrapped on the corrugated pipe (5.1); The filled sand cushion layer comprises a sand cushion layer arranged under the corrugated pipe (5.1) and a natural gravel layer arranged on the upper part of the corrugated pipe (5.1).
8. The basement floor anti-floating structure according to claim 7, characterized in that: A C15 concrete cushion layer (9) and a clay backfill layer (10) are sequentially arranged at the bottom of the blind ditch (5) outside the basement.
9. The basement floor anti-floating structure according to claim 7 or 8, characterized in that: The outer wall of the inspection well (2) is arranged as a concrete structure, and a concrete cushion layer is arranged at the bottom. The corrugated pipe (5.1) of the blind ditch (5) outside the basement passes through the outer wall of the inspection well (2), and the corrugated pipe (5.1) and the outer wall of the inspection well (2) are fixedly connected to each other by a fixing method.