CN105780820A - Anti-floating structure of bottom plate of underground building - Google Patents
Anti-floating structure of bottom plate of underground building Download PDFInfo
- Publication number
- CN105780820A CN105780820A CN201610292435.7A CN201610292435A CN105780820A CN 105780820 A CN105780820 A CN 105780820A CN 201610292435 A CN201610292435 A CN 201610292435A CN 105780820 A CN105780820 A CN 105780820A
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- Prior art keywords
- basement
- water
- bottom plate
- concrete
- underground
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention relates to an anti-floating structure of a bottom plate of an underground building. Continuous dewatering is carried out through a water guide method, and water buoyancy is reduced, so that the number of uplift piles is reduced, and the construction cost is reduced. According to the technical scheme of the anti-floating structure of the bottom plate of the underground building, the underground building comprises a building outer wall on the ground, a basement lateral wall under the ground and a basement bottom plate and is characterized in that a concrete cut-off wall is arranged on the lower portion of the basement bottom plate and corresponds to the basement lateral wall; a water-permeable layer is laid in the area, surrounded by the concrete cut-off wall, of the lower portion of the basement bottom plate and includes a fine sand layer, geotechnical cloth, a coarse sand layer, a pebble layer, color-strip cloth and a concrete cushion layer sequentially from bottom to top; a water-collecting well is arranged outside a basement and in a position lower than the basement bottom plate, and the water-permeable layer communicates with the water-collecting well through a water guide pipe. The anti-floating structure is applicable to bottom plates of the basement, an underground channel and other underground facilities.
Description
Technical field
The present invention relates to a kind of underground structure base plate float Structure.Base plate suitable in the underground installation such as basement, underpass.
Background technology
In the area that level of ground water is higher, all can encounter, during design basement, the problem processing water buoyancy.From speciality of hydroelectric power engineering construction angle, the such issues that of process, have two schemes: one, " block up ", two, " leading ", and the basic scheme adopting the former i.e. " blocking up " of work China Democratic National Construction Association specialty.Such as, designing underground parking garage, need to solve anti-floating problem, it is a lot of that a kind of method is that the soil layer that top board overlying is very thick exceeds outdoor ground；Another kind is the mode by setting up uplift pile, and this needs underground structure bottom plate to arrange grade beam and very thick base plate, although so safe and effective, but greatly increase construction costs.Meanwhile, in some cases, underground structure Anti-floating design is not suitable for the mode taking to set up more uplift pile, at this moment, then needs to consider other measure of anti float.
Summary of the invention
The technical problem to be solved in the present invention is: for above-mentioned Problems existing, it is proposed to a kind of underground structure base plate float Structure, it is intended to utilizes the method for water guide to carry out lasting precipitation, reduces water buoyancy, thus saving uplift pile, saves construction cost.
The technical solution adopted in the present invention is: underground structure base plate float Structure, described underground structure includes the skin on more than ground, the basement side wall of below ground and basement bottom board, it is characterized in that, corresponding to basement side wall, concrete cutoff wall is set in basement bottom board bottom, pervious bed is laid in the region that basement bottom board bottom is surrounded by concrete cutoff wall, and this pervious bed is followed successively by fine sand layer, geotextiles, coarse sands layer, stone layer, colour bar cloth and concrete cushion from bottom to top；Sump is set at basement external and lower than the position of basement bottom board, is connected by aqueduct between described pervious bed and sump.
Described concrete cutoff wall adopts plain concrete, the height 1～2m of concrete cutoff wall.
Described aqueduct is PVC aqueduct, is embedded in the bottom of stone layer.
The invention has the beneficial effects as follows: the present invention utilizes the concept of " water guide " and " draining ", by the aquiclude below underground structure is carried out guide's heel row, lowering of watertable artificially, reduce water buoyancy, fundamentally solve underground structure anti-floating problem, save construction costs.Propose a kind of new underground structure Anti-floating design concept simultaneously, there is good economic worth and promotional value.
The present invention is that infiltration coefficient is less than 10 for base plate place soil layer-3The cohesive soil in rice/sky, comparatively applicable, if infiltration coefficient is more than 10-3Rice/sky, then can carry out the process that intercepts water around foundation ditch, sets the method such as cement mixing pile, grouting as adopted, if after taking process, making every 10000m2Basement total water percolating capacity every day of area is less than 10m3, then equally applicable the design method.
Accompanying drawing explanation
Fig. 1 is the profile (with aqueduct) of underground structure of the present invention.
Fig. 2 is the profile (not having aqueduct) of underground structure of the present invention.
Fig. 3 is the site plan of sump of the present invention and aqueduct.
Fig. 4 is the profile of sump of the present invention.
Detailed description of the invention
As shown in Figure 1 and Figure 2, the present embodiment is the structure of certain Factory Building basement, it more than ground it is the exterior wall 10 of this Factory Building, the basement that below ground is this Factory Building, including basement side wall 12 and basement bottom board 11, bottom at basement bottom board, the basement side wall corresponding to top build plain concrete water stop 1, and this water stop is tall and big in 1m (or arranging the water-stop curtain of certain depth according to geological condition).Simultaneously, pervious bed is laid in the bottom of basement bottom board 11 and the region that surrounded by water stop, pervious bed is followed successively by fine sand layer 2, geotextiles 3, coarse sands layer 4, stone layer 5, colour bar cloth 6 and concrete cushion 7 from bottom to top, the ground clay equating contacted with fine sand layer 2.Imbed PVC aqueduct 8 in the bottom of stone layer 5, the outer end of aqueduct leads to the outside of basement through plain concrete water stop 1.Colour bar cloth 6 in pervious bed and concrete cushion 7 play the effect of water proof.
As shown in Figure 3, Figure 4, sump 9 is set at basement external and lower than the position of basement bottom board 11, in described aqueduct 8 access set well 9, when the infiltration water of pervious bed is after the gathering of certain time, flow into sump 9 by aqueduct 8, drainage equipment is set at sump 9 and carries out draining.At every 10000m2Basement total water percolating capacity every day of area is less than 10m3Time, drainage equipment is enough to keep level of ground water to maintain design water level (below base plate 1m) below.
Claims (3)
1. a underground structure base plate float Structure, described underground structure includes the skin (10) on more than ground, the basement side wall (12) of below ground and basement bottom board (11), it is characterized in that: corresponding to basement side wall (12), in basement bottom board (11) bottom, concrete cutoff wall (1) is set, pervious bed is laid in the region that basement bottom board (11) bottom is surrounded by concrete cutoff wall (1), this pervious bed is followed successively by fine sand layer (2) from bottom to top, geotextiles (3), coarse sands layer (4), stone layer (5), colour bar cloth (6) and concrete cushion (7)；Sump (9) is set at basement external and lower than the position of basement bottom board (11), is connected by aqueduct (8) between described pervious bed with sump (9).
2. underground structure according to claim 1 base plate float Structure, it is characterised in that: described concrete cutoff wall (1) adopts plain concrete, the height 1～2m of concrete cutoff wall.
3. underground structure according to claim 1 and 2 base plate float Structure, it is characterised in that: described aqueduct (8) is PVC aqueduct, is embedded in the bottom of stone layer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610292435.7A CN105780820A (en) | 2016-05-04 | 2016-05-04 | Anti-floating structure of bottom plate of underground building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610292435.7A CN105780820A (en) | 2016-05-04 | 2016-05-04 | Anti-floating structure of bottom plate of underground building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105780820A true CN105780820A (en) | 2016-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610292435.7A Pending CN105780820A (en) | 2016-05-04 | 2016-05-04 | Anti-floating structure of bottom plate of underground building |
Country Status (1)
| Country | Link |
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| CN (1) | CN105780820A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024711A (en) * | 2018-07-28 | 2018-12-18 | 江苏地基工程有限公司 | Underground structure anti-floating system and its construction method |
| CN111945795A (en) * | 2020-09-17 | 2020-11-17 | 张延年 | Anti-floating safety protection structure system for underground local impervious bed |
| CN113202148A (en) * | 2021-05-10 | 2021-08-03 | 四川省建筑科学研究院有限公司 | Basement water conservancy diversion pressure limiting structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006029003A (en) * | 2004-07-21 | 2006-02-02 | Chugoku Electric Power Co Inc:The | Floating preventive structure of structure and its construction method |
| CN101298782A (en) * | 2008-06-13 | 2008-11-05 | 朱邃科 | Method and system for basement engineering water proof and water drain |
| CN202627032U (en) * | 2012-05-30 | 2012-12-26 | 福建省泷澄建设集团有限公司 | Buoyancy release system for deep foundation slab |
| CN103061351A (en) * | 2012-12-24 | 2013-04-24 | 广西华蓝设计(集团)有限公司 | Device for preventing basement bottom floor from heaving and water permeating |
| CN205712208U (en) * | 2016-05-04 | 2016-11-23 | 中国电建集团华东勘测设计研究院有限公司 | A kind of underground structure base plate float Structure |
-
2016
- 2016-05-04 CN CN201610292435.7A patent/CN105780820A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006029003A (en) * | 2004-07-21 | 2006-02-02 | Chugoku Electric Power Co Inc:The | Floating preventive structure of structure and its construction method |
| CN101298782A (en) * | 2008-06-13 | 2008-11-05 | 朱邃科 | Method and system for basement engineering water proof and water drain |
| CN202627032U (en) * | 2012-05-30 | 2012-12-26 | 福建省泷澄建设集团有限公司 | Buoyancy release system for deep foundation slab |
| CN103061351A (en) * | 2012-12-24 | 2013-04-24 | 广西华蓝设计(集团)有限公司 | Device for preventing basement bottom floor from heaving and water permeating |
| CN205712208U (en) * | 2016-05-04 | 2016-11-23 | 中国电建集团华东勘测设计研究院有限公司 | A kind of underground structure base plate float Structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024711A (en) * | 2018-07-28 | 2018-12-18 | 江苏地基工程有限公司 | Underground structure anti-floating system and its construction method |
| CN109024711B (en) * | 2018-07-28 | 2020-07-21 | 江苏地基工程有限公司 | Underground structure anti-floating system and construction method thereof |
| CN111945795A (en) * | 2020-09-17 | 2020-11-17 | 张延年 | Anti-floating safety protection structure system for underground local impervious bed |
| CN113202148A (en) * | 2021-05-10 | 2021-08-03 | 四川省建筑科学研究院有限公司 | Basement water conservancy diversion pressure limiting structure |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160720 |