CN212477844U - Basement drainage decompression anti-floating structure - Google Patents
Basement drainage decompression anti-floating structure Download PDFInfo
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- CN212477844U CN212477844U CN202020995472.6U CN202020995472U CN212477844U CN 212477844 U CN212477844 U CN 212477844U CN 202020995472 U CN202020995472 U CN 202020995472U CN 212477844 U CN212477844 U CN 212477844U
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Abstract
A basement drainage decompression anti-floating structure comprises a waterproof curtain, a slab bottom structure layer and a decompression drainage system; the waterproof curtain comprises a supporting waterproof structure, a filling layer and a hardened concrete layer; the support water-stop structure and the basement outer wall are arranged in parallel at intervals; the filling layer is filled between the support water stop structure and the basement outer wall; the hardened concrete layer is arranged on the top of the support water-stop structure; the slab bottom structure layer comprises a civil grid layer, a first sand layer, a gravel layer, a geotextile layer, a concrete cushion layer and a waterproof layer; the pressure reducing drainage system comprises a pressure reducing well, a water collecting pit and a self-flowing inlet pipeline; a first steel cover plate is covered at the top of the relief well; the water inlet of the gravity flow inlet pipeline is positioned in the relief well, and the water outlet of the gravity flow inlet pipeline is positioned in the sump; a submersible pump is arranged in the water collecting pit, and a second steel cover plate is covered on the top of the water collecting pit. The utility model provides a traditional anti technical problem that floats measure with high costs, the period is long, basement bottom plate, infiltration hidden danger are big and the basement structure is big from the waterproof degree of difficulty.
Description
Technical Field
The utility model discloses building engineering technical field, especially a basement drainage decompression anti structure of floating.
Background
The project comprises main roads, customs halls, north-south traffic platforms, commercial and industrial office accessories and the like. The total land area of the project is 34.5 hectares, and the total construction scale is more than 130 ten thousand square meters. Wherein, the main project of the customs hall has 3 layers underground and 4 layers above the ground. The absolute depth of the bottom of the foundation pit ranges from minus 5.6m to minus 10.6m, the absolute elevation of the periphery of the foundation pit ranges from 5.65 m to 2.70m, and the depth of the foundation pit ranges from 9.2 m to 13.3 m. The foundation pit is rectangular, the perimeter is 611m, the excavation area is 21251m2. The original landform unit of the field in the project belongs to the landform of the coastal beach, is low-lying in situ, and is lifted up by artificial filling and sand filling; the basement bottom plate of the main engineering basement of the customs clearance hall is arranged between filling soil and silt, the buried depth of the underground water level of the ground is 0.1-1.2 m, the average depth is 0.62m, the rainfall of the area is rich and ranges from 1700mm to 2200mm, and the filling soil layer have the condition that the water stagnation of the upper layer cannot be ignored. The engineering has abundant underground water and high underground water level, the water pressure of most basement bottom plates is 140kPa, the maximum water pressure reaches 180kPa, most engineering parts are traffic hubs, the tower parts are few, and the self weight of the upper structure is less than the water pressure; if the project is designed according to the conventional anti-floating design, mainly an anti-pulling pile and an anti-floating anchor rod are used; the anti-floating measures have high cost and long construction period; and because the pit piles are more, the parting joints are more, the supporting reserved holes are more, and the basement bottom plate and the outer wall have larger water seepage hidden trouble; meanwhile, the underground structure is large in area, concrete is prone to cracking due to continuous pouring, and the basement structure is large in self-waterproof difficulty.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an anti structure of floating of basement drainage decompression, it is with high costs, the period of construction to solve traditional anti measure of floating, and there are great infiltration hidden danger and the basement structure from the big technical problem of the waterproof degree of difficulty in basement bottom plate and outer wall.
In order to achieve the above purpose, the utility model adopts the following technical scheme.
A basement drainage decompression anti-floating structure comprises a waterproof curtain, a slab bottom structure layer and a decompression drainage system; the waterproof curtain is arranged on the outer side of the basement outer wall and comprises a supporting waterproof structure, a filling layer and a hardened concrete layer; the support water-stop structure and the basement outer wall are arranged in parallel at intervals; the filling layer is filled between the support water stop structure and the basement outer wall; the hardened concrete layer is arranged at the top of the support water-stop structure, and the inner side edge of the hardened concrete layer is connected with the outer wall of the basement; the slab bottom structure layer is arranged at the bottom of the basement bottom plate and comprises a civil grid layer, a first sand layer, a gravel layer, a geotextile layer, a concrete cushion layer and a waterproof layer which are sequentially arranged from bottom to top; the pressure-reducing drainage system is arranged in the plate bottom structure layer and comprises a pressure-reducing well, a water collecting pit and a self-flowing inlet pipeline; the bottom end of the relief well is flush with the bottom of the gravel layer, and the top end of the relief well is flush with the top surface of the basement bottom plate; a first steel cover plate is covered at the top of the relief well; the thickness of the crushed stone layer is increased at the position corresponding to the relief well; the sump is disposed at a location proximate to the relief well; a concrete slab is arranged between the bottom of the basement bottom plate and the waterproof layer and at a position corresponding to the water collecting pit; the bottom of the relief well is positioned in a concrete slab; the self-flowing inlet pipeline is arranged between the waterproof layer and the basement bottom plate, and an outer concrete layer is arranged on the outer side of the self-flowing inlet pipeline; the water inlet of the gravity flow inlet pipeline is positioned in the relief well, and the water outlet of the gravity flow inlet pipeline is positioned in the sump; the height of the water inlet of the gravity flow inlet pipeline is higher than that of the water outlet of the gravity flow inlet pipeline; a submersible pump is arranged in the water collecting pit, and a second steel cover plate is covered at the top of the water collecting pit.
Preferably, the thickness of the filling layer is 400 mm-600 mm; the filling layer comprises a clay layer, a second sand layer and a plain concrete layer which are sequentially arranged from top to bottom.
Preferably, the depth of the relief well is not less than 1.5m, and the relief well is enclosed by a relief well bottom plate and a relief well side wall; the decompression well bottom plate and the decompression well side wall are formed by pouring sand-free concrete.
Preferably, the vertical section of the rubble layer at the position corresponding to the relief well is in an inverted trapezoid shape, the bottom edge of the trapezoid shape is 100 mm-150 mm larger than the width of the relief well, the top edge of the trapezoid shape is 1200 mm-1500 mm larger than the width of the relief well, and the height of the trapezoid shape is 1200 mm-1500 mm.
Preferably, the vertical section of the concrete slab is in an inverted trapezoid shape, the top edge of the trapezoid shape is 1000 mm-1500 mm larger than the width of the water collecting pit, and the height of the trapezoid shape is 1500 mm-2500 mm; the distance between the bottom surface of the water collecting pit and the bottom surface of the concrete slab ranges from 500mm to 700 mm.
Preferably, the outer concrete layer and the concrete slab are integrally formed.
Compared with the prior art, the utility model has the following characteristics and beneficial effect.
1. The utility model discloses behind the difficulty of the anti design of floating of comprehensive consideration engineering and the demand of basement antiseep measure, set up the bottom plate structure layer in the bottom of basement bottom plate, effectively solve the basement structure from the big technical problem of the waterproof degree of difficulty through the water pressure that reduces on the basement bottom plate.
2. The utility model reduces the water inflow of the foundation pit by arranging the waterproof curtain at the periphery of the basement for intercepting water, thereby fundamentally reducing the influence on the surrounding environment; arranging an open type large-diameter sand-free aggregate liquid soil relief well under a basement bottom plate for draining, reducing a water head and reducing load acting on a structural bottom plate; the utility model discloses a cut the row and unite, the influence that steerable drainage brought increases drainage depressurization system's reliability and durability to ensure the safety of basement.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is the utility model discloses a vertical section structure sketch map of anti structure of floating of basement drainage decompression.
Fig. 2 is a schematic structural view of the middle waterproof curtain and the bottom structure layer of the board of the present invention.
Reference numerals: 1-basement exterior wall, 2-supporting water-stop structure, 3-filling layer, 3.1-clay layer, 3.2-second sand layer, 3.3-plain concrete layer, 4-hardened concrete layer, 5-basement bottom plate, 6-civil grid layer, 7-first sand layer, 8-gravel layer, 9-geotechnical cloth layer, 10-concrete cushion layer, 11-waterproof layer, 12-relief well, 12.1-relief well bottom plate, 12.2-relief well side wall, 13-sump pit, 14-gravity inflow pipeline, 15-first steel cover plate, 16-concrete plate, 17-outer concrete layer, 18-submersible pump, 19-second steel cover plate, 20-silt and 21-decoration panel.
Detailed Description
As shown in fig. 1 and 2, the basement drainage decompression anti-floating structure comprises a waterproof curtain, a slab bottom structure layer and a decompression drainage system; the waterproof curtain is arranged on the outer side of the basement outer wall 1 and comprises a supporting waterproof structure 2, a filling layer 3 and a hardened concrete layer 4; the support water-stop structure 2 and the basement outer wall 1 are arranged in parallel at intervals; the filling layer 3 is filled between the support water stop structure 2 and the basement outer wall 1; the hardened concrete layer 4 is arranged at the top of the supporting and water-stopping structure 2, and the inner side edge of the hardened concrete layer 4 is connected with the basement outer wall 1; the slab bottom structure layer is arranged at the bottom of the basement bottom plate 5 and comprises a civil grille layer 6, a first sand layer 7, a gravel layer 8, a geotextile layer 9, a concrete cushion layer 10 and a waterproof layer 11 which are sequentially arranged from bottom to top; the pressure-reducing drainage system is arranged in the plate bottom structure layer and comprises a pressure-reducing well 12, a water collecting pit 13 and a self-flowing inlet pipeline 14; the bottom end of the relief well 12 is flush with the bottom of the gravel layer 8, and the top end of the relief well 12 is flush with the top surface of the basement bottom plate 5; a first steel cover plate 15 is covered at the top of the relief well 12; the crushed stone layer 8 is increased in thickness at a position corresponding to the relief well 12; the sump 13 is provided at a position close to the relief well 12; a concrete slab 16 is arranged between the bottom of the basement bottom plate 5 and the waterproof layer 11 and at the position corresponding to the water collecting pit 13; the bottom of the relief well 12 is located in a concrete slab 16; the gravity flow inlet pipeline 14 is arranged between the waterproof layer 11 and the basement bottom plate 5, and an outer concrete layer 17 is arranged on the outer side of the gravity flow inlet pipeline 14; the water inlet of the gravity flow inlet pipeline 14 is positioned in the relief well 12, and the water outlet of the gravity flow inlet pipeline 14 is positioned in the sump 13; and the height of the inlet of the gravity flow inlet pipe 14 is higher than the height of the outlet of the gravity flow inlet pipe 14; a submersible pump 18 is arranged in the sump 13, and a second steel cover plate 19 is covered on the top of the sump 13.
In the embodiment, the thickness of the filling layer 3 is 400 mm-600 mm; the filling layer 3 comprises a clay layer 3.1, a second sand layer 3.2 and a plain concrete layer 3.3 which are sequentially arranged from top to bottom.
In this embodiment, the sump 13 and the relief well 12 are both formed by casting sand-free concrete.
In the embodiment, the depth of the relief well 12 is not less than 1.5m, and the relief well 12 is enclosed by a relief well bottom plate 12.1 and a relief well side wall 12.2; the decompression well bottom plate 12.1 and the decompression well side wall 12.2 are formed by pouring sand-free concrete.
In this embodiment, the vertical section of rubble layer 8 in the position department that corresponds relief well 12 is the trapezoidal of inversion to trapezoidal base is than the big 100mm ~150mm of width of relief well 12, and trapezoidal topside is 1200mm ~1500mm than the big width of relief well 12, and trapezoidal height is 1200mm ~1500 mm.
In the embodiment, the vertical section of the concrete slab 16 is in an inverted trapezoid shape, the top edge of the trapezoid shape is 1000 mm-1500 mm larger than the width of the water collecting pit 13, and the height of the trapezoid shape is 1500 mm-2500 mm; the distance between the bottom surface of the water collecting pit 13 and the bottom surface of the concrete slab 16 is 500 mm-700 mm.
In this embodiment, the outer concrete layer 17 is integrally formed with the concrete slab 16.
In this embodiment, both ends of the slab bottom structure layer are respectively connected with the supporting water-stop structure 2.
In this embodiment, the bottom of the slab bottom structure layer is made of sludge 20, and a decorative panel 21 is disposed on the top of the basement bottom slab 5.
The above embodiments are not exhaustive of the specific embodiments, and other embodiments are possible, and the above embodiments are intended to illustrate, but not limit the scope of the present invention, and all applications coming from the simple changes of the present invention fall within the scope of the present invention.
Claims (6)
1. The utility model provides a basement drainage decompression anti structure that floats which characterized in that: comprises a waterproof curtain, a plate bottom structure layer and a pressure reduction drainage system; the waterproof curtain is arranged on the outer side of the basement outer wall (1) and comprises a supporting waterproof structure (2), a filling layer (3) and a hardened concrete layer (4); the support water-stop structure (2) and the basement outer wall (1) are arranged in parallel at intervals; the filling layer (3) is filled between the support water stop structure (2) and the basement outer wall (1); the hardened concrete layer (4) is arranged at the top of the supporting water-stopping structure (2), and the inner side edge of the hardened concrete layer (4) is connected with the basement outer wall (1); the slab bottom structure layer is arranged at the bottom of the basement bottom plate (5) and comprises a civil grille layer (6), a first sand layer (7), a gravel layer (8), a geotechnical cloth layer (9), a concrete cushion layer (10) and a waterproof layer (11) which are sequentially arranged from bottom to top; the pressure-reducing drainage system is arranged in the plate bottom structure layer and comprises a pressure-reducing well (12), a water collecting pit (13) and a self-flowing inlet pipeline (14); the bottom end of the relief well (12) is flush with the bottom of the gravel layer (8), and the top end of the relief well (12) is flush with the top surface of the basement bottom plate (5); a first steel cover plate (15) is covered at the top of the relief well (12); the thickness of the crushed stone layer (8) is increased at the position corresponding to the relief well (12); the sump (13) is arranged at a position close to the relief well (12); a concrete slab (16) is arranged between the bottom of the basement bottom plate (5) and the waterproof layer (11) and at a position corresponding to the water collecting pit (13); the bottom of the relief well (12) is located in a concrete slab (16); the gravity flow inlet pipeline (14) is arranged between the waterproof layer (11) and the basement bottom plate (5), and an outer concrete layer (17) is arranged on the outer side of the gravity flow inlet pipeline (14); the water inlet of the gravity flow inlet pipeline (14) is positioned in the relief well (12), and the water outlet of the gravity flow inlet pipeline (14) is positioned in the sump (13); and the height of the water inlet of the gravity flow inlet pipeline (14) is higher than that of the water outlet of the gravity flow inlet pipeline (14); a submersible pump (18) is arranged in the water collecting pit (13), and a second steel cover plate (19) is covered at the top of the water collecting pit (13).
2. The basement drainage decompression anti-floating structure of claim 1, wherein: the thickness of the filling layer (3) is 400-600 mm; the filling layer (3) comprises a clay layer (3.1), a second sand layer (3.2) and a plain concrete layer (3.3) which are sequentially arranged from top to bottom.
3. The basement drainage decompression anti-floating structure of claim 1, wherein: the depth of the relief well (12) is not less than 1.5m, and the relief well (12) is enclosed by a relief well bottom plate (12.1) and a relief well side wall (12.2); the decompression well bottom plate (12.1) and the decompression well side wall (12.2) are formed by pouring sand-free concrete.
4. The basement drainage decompression anti-floating structure of claim 1, wherein: the vertical section of rubble layer (8) in the position department that corresponds relief well (12) is the trapezoidal of inversion to trapezoidal base is than the width of relief well (12) 100mm ~150mm, and trapezoidal topside is than the width of relief well (12) 1200mm ~1500mm, and trapezoidal height is 1200mm ~1500 mm.
5. The basement drainage decompression anti-floating structure of claim 1, wherein: the vertical section of the concrete slab (16) is in an inverted trapezoid shape, the top edge of the trapezoid shape is 1000 mm-1500 mm larger than the width of the water collecting pit (13), and the height of the trapezoid shape is 1500 mm-2500 mm; the distance between the bottom surface of the water collecting pit (13) and the bottom surface of the concrete slab (16) is 500-700 mm.
6. The basement drainage decompression anti-floating structure of claim 1, wherein: the outer concrete layer (17) and the concrete plate (16) are integrally formed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020995472.6U CN212477844U (en) | 2020-06-03 | 2020-06-03 | Basement drainage decompression anti-floating structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020995472.6U CN212477844U (en) | 2020-06-03 | 2020-06-03 | Basement drainage decompression anti-floating structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266043A (en) * | 2021-06-09 | 2021-08-17 | 广东省水利水电第三工程局有限公司 | Bottom sealing method for rock foundation pressure-bearing fracture water |
| CN113931210A (en) * | 2021-11-03 | 2022-01-14 | 江苏润扬建设工程集团有限公司 | Anti-floating drainage structure of basement relief well and construction method thereof |
| WO2023103651A1 (en) * | 2021-12-08 | 2023-06-15 | 华南理工大学 | Drainage pressure relief anti-floating system for weakly permeable soft stratum |
-
2020
- 2020-06-03 CN CN202020995472.6U patent/CN212477844U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266043A (en) * | 2021-06-09 | 2021-08-17 | 广东省水利水电第三工程局有限公司 | Bottom sealing method for rock foundation pressure-bearing fracture water |
| CN113266043B (en) * | 2021-06-09 | 2022-04-29 | 广东省水利水电第三工程局有限公司 | Bottom sealing method for rock foundation pressure-bearing fracture water |
| CN113931210A (en) * | 2021-11-03 | 2022-01-14 | 江苏润扬建设工程集团有限公司 | Anti-floating drainage structure of basement relief well and construction method thereof |
| CN113931210B (en) * | 2021-11-03 | 2022-07-05 | 江苏润扬建设工程集团有限公司 | Anti-floating drainage structure of basement relief well and construction method thereof |
| WO2023103651A1 (en) * | 2021-12-08 | 2023-06-15 | 华南理工大学 | Drainage pressure relief anti-floating system for weakly permeable soft stratum |
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