CN216339715U - Anti processing structure that floats of underground works - Google Patents
Anti processing structure that floats of underground works Download PDFInfo
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- CN216339715U CN216339715U CN202122906295.7U CN202122906295U CN216339715U CN 216339715 U CN216339715 U CN 216339715U CN 202122906295 U CN202122906295 U CN 202122906295U CN 216339715 U CN216339715 U CN 216339715U
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Abstract
The utility model discloses an underground engineering anti-floating treatment structure which comprises an underground building bottom plate and a plain concrete cushion layer positioned between the underground building bottom plate and the bottom of a foundation pit, wherein a plurality of water drainage holes penetrating through the plain concrete cushion layer are formed in the underground building bottom plate, the upper ends of the water drainage holes are connected with a water collecting well through a water drainage pipe network, a plain concrete backfill layer with a preset height is filled at the bottom of a fertilizer tank between an underground building outer wall and a foundation pit side slope, and a plain soil backfill layer is further filled in the fertilizer tank above the plain concrete backfill layer. The effect is as follows: the utility model ensures that the bottom plate does not generate upward buoyancy by combining two measures of water separation and drainage. The water-resisting method comprises the following steps that a plain concrete backfill layer is arranged at the bottom of a fertilizer tank to prevent surface water from permeating into a bottom plate of an underground building; the drainage method is characterized in that the drain hole is formed in the bottom plate to release pressure, so that a small amount of water permeating into the bottom plate can be discharged into the water collecting well in time.
Description
Technical Field
The utility model relates to the technical field of civil engineering, in particular to an anti-floating treatment structure for underground engineering.
Background
In the anti-floating accident of the existing underground engineering, the underground water level rises due to the fact that surface water permeates fertilizer grooves around a foundation pit to form a 'basin effect', so that the case that a basement bottom plate is damaged by water buoyancy is occasionally caused, and even engineering disputes are caused. According to the existing technical standard for resisting floating in constructional engineering, when the ground is permeable to rock and soil with a water permeable grade of weak water and unsmooth drainage, the resisting floating and preventing water level is the elevation of the outdoor terrace. However, in many building design schemes, attention on anti-floating caused by surface water infiltration is insufficient, and it is generally accepted that the cost of anti-floating measures is high, and it is uneconomical to adopt expensive anti-floating measures only due to surface water infiltration, resulting in insufficient anti-floating measures in the construction process, thereby causing anti-floating accidents.
The utility model patent No. ZL201920838875.7 discloses an anti structure of floating of basement drainage, it adopts rubble bed course to cut off the bottom plate under the bottom plate, nevertheless because rubble bed course water permeability is strong, when groundwater is abundanter, the bottom plate still can receive great water buoyancy. Meanwhile, the gravel seepage layer arranged on the bottom plate occupies a large amount of internal space of underground engineering, and the practicability is not enough.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an anti-floating treatment structure for underground engineering, which aims to solve the problem of rising of the water level of a foundation pit caused by the fact that surface water permeates into a foundation pit fertilizer groove by combining a water separation and drainage method, avoids the influence of floating on a bottom plate, and has low cost and wide application prospect.
In order to achieve the aim, the utility model provides an underground engineering anti-floating treatment structure which is characterized by comprising an underground building bottom plate and a plain concrete cushion layer positioned between the underground building bottom plate and the bottom of a foundation pit, wherein a plurality of drainage holes penetrating through the plain concrete cushion layer are formed in the underground building bottom plate, the upper ends of the drainage holes are connected with a water collecting well through a drainage pipe network, a plain concrete backfill layer with a preset height is filled at the bottom of a fertilizer tank between an underground building outer wall and a foundation pit side slope, and a plain soil backfill layer is further filled in the fertilizer tank above the plain concrete backfill layer.
Furthermore, a concrete surface protection layer is sprayed on the side slope of the foundation pit.
Furthermore, the drainage pipe network is arranged on the underground building bottom plate and is externally coated with a concrete sealing protective layer.
Furthermore, the drainage network runs along the wall side or/and the column side of the underground building or the buried floor.
Furthermore, each water drainage hole is connected with the drainage pipe network through a tee joint.
Furthermore, a filter bag is arranged at the bottom of each water drainage hole.
Furthermore, an internal overflow port facing the underground building room is provided at a predetermined elevation on the water collecting well.
Furthermore, an off-site overflow port is arranged on the water collecting well below the internal overflow port and is connected with an off-site drainage pipe network buried in the plain soil backfill layer.
Furthermore, a water suction pump is arranged in the water collecting well.
Compared with the prior art, the utility model has the following remarkable effects:
(1) the utility model ensures that the bottom plate does not generate upward buoyancy by combining two measures of water separation and drainage. The water-resisting method comprises the following steps that a plain concrete backfill layer is arranged at the bottom of a fertilizer tank to prevent surface water from permeating into a bottom plate of an underground building; the drainage method is characterized in that the drain hole is formed in the bottom plate to release pressure, so that a small amount of water permeating into the bottom plate can be discharged into the water collecting well in time. Compared with common anti-floating anchor rods and anti-floating piles, the anti-floating treatment structure is more economical, and is more convenient to construct and better in anti-floating performance compared with independent drainage measures such as water seepage wells, drainage blind ditches and the like;
(2) because the water collecting well is provided with the internal overflow ports at a certain elevation and flows into the underground building, when accumulated water in the water collecting well can not be completely pumped and drained in a flood season, underground water can overflow into the underground building through the water drainage holes of the bottom plate and the internal overflow ports of the water collecting well so as to balance the buoyancy of the bottom plate, thereby ensuring the anti-floating safety of the underground building;
(3) an off-site overflow port is arranged at a certain elevation of the water collecting well, accumulated water in the water collecting well flows out of the field automatically after reaching the elevation, and the pressure of water borne by the bottom plate is ensured not to exceed the pressure of the accumulated water after reaching the elevation of the off-site overflow port, so that accurate anti-floating water level is provided for anti-floating treatment;
(4) the drainage pipe network is buried in the dark, and along the wall side, the column side or the buried bottom plate trend of the underground building, the indoor space of the underground building is not occupied as much as possible, so that the use function of the underground building is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic overall structure diagram of a first embodiment of the present invention;
FIG. 2 is a schematic view of the overall structure of a second embodiment of the present invention;
reference numbers in the figures: 1-a bottom plate, 2-water drainage holes, 3-a drainage pipe network, 4-a water collecting well, 5-a fertilizer tank, 6-a plain concrete backfill layer, 7-a plain soil backfill layer, 8-a plain concrete cushion layer, 9-a concrete protective layer, 10-a concrete sealing protective layer, 11-a water filter bag, 12-an internal overflow gap, 13-an off-site overflow gap, 14-an off-site drainage pipe network and 15-a water pump.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example 1:
fig. 1 shows a first embodiment of the utility model: the utility model provides an anti processing structure that floats of underground works, includes underground building bottom plate 1 and the plain concrete bed course 8 that is located between underground building bottom plate 1 and the foundation ditch hole bottom set up a plurality of outlet 2 that run through plain concrete bed course 8 on the underground building bottom plate 1, the upper end of outlet 2 is connected with sump pit 4 through drainage pipe network 3, and 5 bottom packings at the fertile groove between underground building outer wall and foundation ditch side slope have plain concrete backfill layer 6 of predetermined height, still pack plain soil backfill layer 7 in the fertile groove of plain concrete backfill layer 6 top.
In order to ensure the stability of the foundation pit after excavation, a sprayed concrete protective layer 9 is also arranged on the side slope of the foundation pit. Preferably, the concrete surface protection layer 9 is sprayed with water penetration-proof concrete, so that a barrier is added on the water penetration path of the foundation pit side slope to the fertilizer groove 5.
As can be seen from fig. 1, in order to ensure the durability of the drainage pipe network 3, the drainage pipe network 3 is arranged on the underground building floor and is surrounded by a concrete enclosing protective layer 10. Preferably, the drainage network 3 runs along the wall and/or column sides of the underground structure or the buried floor 1 in order to minimize the occupation of the indoor space of the underground structure and the aesthetic appearance of the interior of the structure.
Preferably, the water collecting well 4 may be disposed outside the building wall or in the fertilizer tank 5 so that the water collecting well 4 does not occupy the building indoor space, in order to further reduce the space occupied by the building indoor space.
In specific implementation, each water drainage hole 2 is connected with the drainage pipe network 3 through a tee joint. And a filter bag 11 is arranged at the bottom of each water drainage hole 2.
In order to subject the bottom plate 1 to pressure and buoyancy when the sump 4 cannot be drained in time, an internal overflow 12 is provided at a predetermined elevation on said sump 4 towards the interior of the underground building.
In order to limit the accumulated water capacity within a certain range and limit the water pressure borne by the bottom plate 1 not to exceed a certain range, an off-site overflow port 13 is further arranged on the water collecting well 4 below the internal overflow port 12, and the off-site overflow port 13 is connected with an off-site drainage pipe network 14 buried in the plain soil backfill layer 7.
Example 2:
fig. 2 shows a second embodiment of the utility model, which differs from the first embodiment in that a suction pump 15 is also arranged in the water collection well 4. The volume of the accumulated water in the water collecting well 4 can be controlled by the water suction pump 15, as the optimization, a water level sensor (not shown in the figure) for monitoring the volume of the accumulated water can be arranged in the water collecting well, and when the water level of the accumulated water collected by the water level sensor is higher than a preset threshold value, the water suction pump 15 is automatically controlled by the control system to perform water pumping operation.
In summary, the present invention combines two measures of water separation and drainage to ensure that the bottom plate 1 does not generate upward buoyancy. Wherein, the water-resisting method prevents surface water from permeating into the bottom plate 1 of the underground building by arranging a plain concrete backfill layer 6 at the bottom of the fertilizer tank 5; the drainage method is characterized in that the drain hole 2 is arranged on the bottom plate 1 for pressure relief, so that part of a small amount of water permeating into the bottom plate 1 can be timely drained into the water collecting well 4. Compared with common anti-floating anchor rods and anti-floating piles, the anti-floating treatment structure is more economical, and is more convenient to construct and better in anti-floating performance compared with independent drainage measures such as water seepage wells, drainage blind ditches and the like; because the water collecting well 4 is provided with the internal overflow gap 12 at a certain elevation and flows into the underground building, when accumulated water in the water collecting well 4 cannot be completely pumped and drained in a flood season, underground water can overflow into the underground building through the drain holes 2 of the bottom plate 1 and the internal overflow gap 12 of the water collecting well 4 so as to balance the buoyancy force applied to the bottom plate 1, and the anti-floating safety of the underground building is ensured; an off-site overflow port 13 is arranged at a certain elevation of the water collecting well 4, so that accumulated water in the water collecting well 4 automatically flows out of the field after reaching the elevation, and the pressure of water borne by the bottom plate 1 is ensured not to exceed the pressure of the accumulated water after reaching the elevation of the off-site overflow port 13, thereby providing accurate anti-floating water level for anti-floating treatment; the drainage pipe network 3 is buried in the dark, and along the wall side, the column side or the direction of the buried bottom plate of the underground building, the indoor space of the underground building is not occupied as much as possible, so that the use function of the underground building is ensured.
While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.
Claims (9)
1. The anti-floating treatment structure of the underground engineering is characterized by comprising an underground building bottom plate and a plain concrete cushion layer positioned between the underground building bottom plate and the bottom of a foundation pit, wherein a plurality of drainage holes penetrating through the plain concrete cushion layer are formed in the underground building bottom plate, the upper ends of the drainage holes are connected with a water collecting well through a drainage pipe network, a plain concrete backfill layer with a preset height is filled at the bottom of a fertilizer tank between an underground building outer wall and a side slope, and a plain soil backfill layer is further filled in the fertilizer tank above the plain concrete backfill layer.
2. An underground engineering anti-floating treatment structure according to claim 1, characterized in that a concrete facing layer is also sprayed on the side slope of the foundation pit.
3. The underground works anti-floating treatment structure according to claim 1, wherein the drainage pipe network is arranged on the underground building bottom plate and is externally coated with a concrete closed protective layer.
4. The underground works anti-floating treatment structure according to claim 1, wherein the drainage pipe network runs along the wall side or the column side of the underground building, or the buried floor.
5. The underground works anti-floating treatment structure according to any one of claims 1 to 4, wherein each of the drainage holes is connected with the drainage pipe network through a tee.
6. An underground engineering anti-floating treatment structure according to claim 5, wherein a filter bag is arranged at the bottom of each drainage hole.
7. An underground works anti-floating treatment structure according to claim 1 or 6, characterized in that an internal overflow gap facing the underground building room is provided at a predetermined elevation on the water collecting well.
8. An underground engineering anti-floating treatment structure according to claim 7, wherein an off-site overflow port is further arranged on the water collecting well below the internal overflow port, and the off-site overflow port is connected with an off-site drainage pipe network buried in the plain soil backfill layer.
9. An underground construction anti-floating treatment structure according to claim 7, wherein a water suction pump is further provided in the water collecting well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122906295.7U CN216339715U (en) | 2021-11-24 | 2021-11-24 | Anti processing structure that floats of underground works |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122906295.7U CN216339715U (en) | 2021-11-24 | 2021-11-24 | Anti processing structure that floats of underground works |
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| CN216339715U true CN216339715U (en) | 2022-04-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960693A (en) * | 2022-06-15 | 2022-08-30 | 北控水务(中国)投资有限公司 | Installation method of underground structure and fertilizer tank structure |
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2021
- 2021-11-24 CN CN202122906295.7U patent/CN216339715U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960693A (en) * | 2022-06-15 | 2022-08-30 | 北控水务(中国)投资有限公司 | Installation method of underground structure and fertilizer tank structure |
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