CN105569094A - Water discharge and drainage system and construction method adopting basement bottom plate water buoyant force releasing method - Google Patents
Water discharge and drainage system and construction method adopting basement bottom plate water buoyant force releasing method Download PDFInfo
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- CN105569094A CN105569094A CN201510537645.3A CN201510537645A CN105569094A CN 105569094 A CN105569094 A CN 105569094A CN 201510537645 A CN201510537645 A CN 201510537645A CN 105569094 A CN105569094 A CN 105569094A
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Abstract
The invention discloses a water discharge and drainage system and a construction method adopting a basement bottom plate water buoyant force releasing method. According to the water discharge and drainage system, crisscross netty water drainage blind ditches are dug in undisturbed soil or overbreak filling below a basement bottom plate, a continuous plastic protective screen is laid in each water drainage blind ditch, plastic blind ditch pipes are buried in the water drainage blind ditches provided with the corresponding plastic protective screens in a laid mode and covered with gravel drainage layers, water discharge openings of the plastic blind ditch pipes communicate with a water collection well, and the water collection well is connected with a water discharge device through a transparent water pipe; and polyethylene protective-film partition slurry layers are laid on the gravel drainage layers, concrete cushions are poured on the polyethylene protective-film partition slurry layers, and the basement bottom plate is arranged on the concrete cushions. According to the water discharge and drainage system and the construction method adopting the basement bottom plate water buoyant force releasing method, the water level under the basement bottom plate can be lowered, and the buoyant force exerted on the basement bottom plate is released and attenuated. Accordingly, the effect that the basement bottom plate is always in the dynamic equilibrium state can be ensured.
Description
Technical field
The present invention relates to a kind of basement bottom board release water buoyancy method water drainage system and construction method, belong to highrise building Construction Technique of Underground Works field.
Background technology
The anti-floating mode that basement bottom board is traditional, if uplift pile, Pulling-Resistant Anchor Rod method and ballast method etc. are all that the mode utilizing dynamic balance to add sealing is carried out anti-stifled to buoyancy force of underground water.Although said method designing axiom is reasonable, later maintenance is simple, but its engineering cost takes up an area lower structural cost about 20% ~ 50%, cost drops into more, and a large amount of use highly energy-consuming material, huge, larger to resource consumption for environment pollution impact, construction speed is slow, and high to the cracking resistance of structure, anticorrosive, anti-bending moment requirements, once design or construction wrong often impact the Long-Time Service of works and comfortableness.
Summary of the invention
The object of the invention is to: provide a kind of basement bottom board to discharge water buoyancy method water drainage system and construction method, drop into more to solve basement bottom board construction cost, and a large amount of use highly energy-consuming material, huge for environment pollution impact, comparatively large to resource consumption, the problem that construction speed is slow.
Technical scheme of the present invention: a kind of construction method of basement bottom board release water buoyancy method water drainage system, comprise existing basement bottom board construction method, the method is when carrying out basement bottom board construction, crisscross netted plastic blind-ditch pipe is laid in advance below basement bottom board, by plastic blind-ditch pipe by the underground water that oozes be drained to around in the collecting well of basement periphery spot distribution, when the water level in collecting well reaches warning line, discharged by the underground water of the automatic water pump in collecting well by collection again, thus the water level under making basement bottom board reduces, buoyancy suffered by basement bottom board is released and weakens, can ensure that basement bottom board is among dynamic equilibrium all the time like this.
Meanwhile, when carrying out sidewall of basement backfilling of earthwork, the scope apart from less than 3 meters, earth's surface adopts the backfill of C15 element concrete; The scope of 3 meters below earth's surface is interior adopts cohesive soil backfill and compaction in layers.
Aforesaid argillic horizon transmission coefficient should be less than or equal to 5 ~ 10cm/s.
A kind of basement bottom board release water buoyancy method water drainage system, this water drainage system is that on undisturbed soil below basement bottom board or backbreak bankets, excavation has crisscross netted weeper drain, continuous print plastic protection net is equipped with in every bar weeper drain, plastic blind-ditch pipe is buried underground in the weeper drain being equipped with plastic protection net, and cover with rubble drainage blanket, the outfall of described plastic blind-ditch pipe is communicated with collecting well, and collecting well is connected with dewatering installation by transparent water pipe; Rubble drainage blanket is equipped with polyethylene protective film every pulp layer, in pulp layer, built concrete cushion at polyethylene protective film, basement bottom board is arranged on concrete cushion.
Aforesaid weeper drain is more than or equal to 0.5% towards the drainage grade in collecting well direction, prevents the underground water collected from flowing backwards.
The outer wall of aforesaid plastic blind-ditch pipe is enclosed with geotextiles.
The ballast grain sizes of aforesaid rubble drainage blanket is 5 ~ 20mm, and ramming degree of filling out is 0.9.
Aforesaid dewatering installation is water tap or automatic water pump.
Aforesaid basement bottom board surface is provided with building coats, levelling for basement bottom board.
Owing to adopting technique scheme, the invention has the advantages that: the present invention utilizes the rubble drainage blanket of gamut planar distribution below basement bottom board to collect seepage in underground, remittance is to the weeper drain of net distribution, again the water in french drain is concentrated in the equally distributed some collecting wells of point-like, dewatering installation is established in collecting well, when water level in collecting well goes up to certain altitude, by dewatering installation, water is taken away in time, thus the water level under making basement bottom board reduces, buoyancy suffered by basement bottom board is released and weakens, can ensure that basement bottom board is among dynamic equilibrium all the time like this.Compared with prior art, the drainage and anti-float construction method that the present invention utilizes decompress(ion), the mode of dredging eliminates underground structure sole buoyancy and water pressure, without the need to arranging traditional measure of anti float such as Pulling-Resistant Anchor Rod, base plate thickness can also be reduced, therefore construction cost is low and do not expend the duration, avoid using highly energy-consuming material in a large number, little, less to resource consumption for environment pollution impact, construction cost is low, the engineering time is short, work progress is easy, safety, improve construction efficiency, draw materials conveniently, require low to construction environment, construction machinery.The present invention is specially adapted to that ground is that weak water permeability soil layer, groundwater run off are little, groundwater table below building base plate or in the underground construction of wet season groundwater table higher than building base plate, there is popularizing application prospect widely.
Accompanying drawing explanation
Structural representation when Fig. 1 is the invention process;
Fig. 2 is the sectional view of the structural representation of weeper drain in the present invention;
Fig. 3 is the sectional view of the structural representation of collecting well in the present invention.
Description of reference numerals: 1-undisturbed soil or backbreak bankets, 2-plastic protection net, 3-rubble drainage blanket; 4-polyethylene protective film every pulp layer, 5-concrete cushion, 6-basement bottom board; 7-plastic blind-ditch pipe; 8-building coats, 9-cohesive soil, 10-sidewall of basement; 11-C15 element concrete; 12-dewatering installation, the transparent water pipe of 13-, 14-collecting well.
Detailed description of the invention
In order to make the object of the invention, technical scheme and advantage clearly, below in conjunction with drawings and Examples, the present invention is described in further detail.
The structural representation of basement bottom board release water buoyancy method water drainage system of the present invention as shown in Figures 1 to 3, this water drainage system is that undisturbed soil below basement bottom board 6 or the backbreak excavation on 1 that bankets has crisscross netted weeper drain, described weeper drain is more than or equal to 0.5% towards the drainage grade in collecting well 14 direction, prevents the underground water collected from flowing backwards.Continuous print plastic protection net 2 is equipped with in every bar weeper drain, plastic blind-ditch pipe 7 is buried underground in the weeper drain being equipped with plastic protection net 2, the outer wall of described plastic blind-ditch pipe 7 is enclosed with geotextiles, then cover on plastic blind-ditch pipe 7 with rubble drainage blanket 3, the outfall of described plastic blind-ditch pipe 7 is communicated with collecting well 14, collecting well 14 is connected with dewatering installation 12 by transparent water pipe 13, and described dewatering installation 12 is automatic water pump; Rubble drainage blanket 3 is equipped with polyethylene protective film every pulp layer 4; in pulp layer 4, concrete cushion 5 has been built at polyethylene protective film; basement bottom board 6 is arranged on concrete cushion 5, and basement bottom board 6 surface is provided with building coats 8, levelling for basement bottom board 6.
Embodiment
The present embodiment is for the length being positioned at Fushan City, Guangdong Province magnificent business central international North project, this project is positioned at other " five happinesses small house " plot, Shi Shan sports palace, Nanhai District Foshan City, to the east of science and technology North Road, on the south universal love Road, to the west of Red Star South Road, its floor space about 5.2 ten thousand square metres, overall floorage about 46.8 ten thousand square metres, F3/B3.
This example, when Specific construction, is undertaken by following construction sequence:
(1) as shown in Figures 1 to 3, when excavating weeper drain excavation by drainage grade >=0.5%, sole plate mechanical equivalent of light excavation, to the earthwork that should retain about 20cm during design elevation, adopts hand excavation, ensures that foundation ditch substratum is not destroyed by disturbance, reaches undisturbed soil quality.After being excavated to setting absolute altitude, tackling native surface and carry out compaction treatment.French drain adopts hand fit mechanical equivalent of light excavation, is excavated to apart from changing during about design elevation 20cm with hand digging finishing shaping, must not undisturbed soil bottom disturbance weeper drain or backbreak and banket 1.If excavation exceedes absolute altitude, must can not to fill and lead up with rubble or sand with backfill of loosening the soil, jolt ramming.
(2) along the plastic protection net 2 of continuous laying filtering underground bottom weeper drain, lay block and adopt and to sew up or overlap joint connects, stitching nylon wire intensity must not be less than 150N; Adjacent laying block lap width should not be less than 800mm.Manually roll paving, during laying, cloth cover need keep smooth, straight, reduces lap joint as far as possible and suitably leaves distortion allowance.
(3) in the weeper drain being equipped with plastic protection net 2, plastic blind-ditch pipe 7(drainage grade >=0.5% is buried underground), then on plastic blind-ditch pipe 7, lay the thick rubble drainage blanket 3 of 350mm, ballast grain sizes is 5 ~ 20mm, and rubble requires compacting process, and ramming degree of filling out is 0.9.Rubble drainage blanket 3, when foundation ditch inner plane is laid, must be walked on the scaffold floor arranged, walking of directly must not pulling a cart on rubble.Plastic blind-ditch pipe 7 should carry out plastic blind-ditch pipe 7 center line before installing and elevation is checked, and ensure that plastic blind-ditch pipe 7 to collecting well 15 gradient should not be less than 0.5%, forbid to occur adverse slope phenomenon, the connection between plastic blind-ditch pipe 7 need meet designing requirement.
(4) on rubble drainage blanket 3, lay polyethylene protective film every pulp layer 4, adopt overlap joint to connect during laying, lap length should not be less than 300mm, and guarantees that the phenomenon such as breakage, hole must not appear in plastic sheeting, in order to avoid cement paste infiltrates rubble drainage blanket 3.
(5) in pulp layer 4, built concrete cushion 5 at polyethylene protective film, the concrete cushion 5 of having built should use covered rearing with plastic film maintenance in 12 hours, and curing time must not be less than 7 days.Finally, on concrete cushion 5, build basement bottom board 6, basement bottom board 6 surface is provided with building coats 8, levelling for basement bottom board 6.
For ensureing the effect of release water buoyancy system, during sidewall of basement 10 backfilling of earthwork, isolated underground water infiltrates from pit backfill soil, requires as follows to ground recent fill and pit backfill:
(1) in the scope of 3 meters below earth's surface, pit backfill material is forbidden to adopt the coarse particulate material such as building waste, rubble, sand that hydrophobicity is good, and adopts the cohesive soil 9 that water-resisting property is good, and argillic horizon 9 transmission coefficient should be less than or equal to 5 ~ 10cm/s; Scope apart from less than 3 meters, earth's surface then backfills with water permeability good C15 element concrete 11;
(2), before pit backfill, to first clean out if there is brick slag, building waste etc. outside sidewall of basement 10;
(3) strictly carry out the compaction in layers operation of backfill, guarantee that backfill forms closely knit water proof overall.
The collecting well 14 of right quantity is set at the basement periphery not affecting use, collecting well 14 is connected with dewatering installation 12 by transparent water pipe 13, described dewatering installation 12 is the automatic water pump according to water lev el control start and stop, arranges a stand by pump if desired, standby during routine work failure of pump.Transparent water pipe 13 can monitor the abnormal situation about uprising of hydraulic pressure, when the water level in collecting well 14 reaches warning line, discharged by the underground water of the automatic water pump in collecting well 14 by collection again, thus the water level under basement bottom board 6 is reduced, buoyancy suffered by basement bottom board 6 is released and weakens, and can ensure that basement bottom board 6 is among dynamic equilibrium all the time like this.
Basement bottom board due to this project utilizes construction method of the present invention to implement, thus eliminate 1 meter of traditional thick basement bottom board, the difficulty of construction such as 2218 permanent Pulling-Resistant Anchor Rods of Ф 32 and plate flexible waterproof layer are relatively large, the operation of technique relative complex, compare the rubble drainage blanket of increase and a small amount of grade beam, reach minimizing base plate thickness, avoid using highly energy-consuming material in a large number, little for environment pollution impact, less to resource consumption, there is obvious carbon reduction, seepage water can also be used as watered flowers, wash etc., saving water resource, execute cost low, engineering time is short, shorten the object of construction period, the buoyancy simultaneously removing the generation of this building destroys and the moist leakage problems of orlop basement.
Claims (9)
1. the construction method of a basement bottom board release water buoyancy method water drainage system, comprise existing basement bottom board construction method, it is characterized in that: when carrying out basement bottom board construction, crisscross netted plastic blind-ditch pipe is laid in advance below basement bottom board, by plastic blind-ditch pipe by the underground water that oozes be drained to around in the collecting well of basement periphery spot distribution, when the water level in collecting well reaches warning line, discharged by the underground water of the dewatering installation in collecting well by collection again, thus the water level under making basement bottom board reduces, buoyancy suffered by basement bottom board is released and weakens, can ensure that basement bottom board is among dynamic equilibrium all the time like this.
2. the construction method of basement bottom board release water buoyancy method water drainage system according to claim 1, it is characterized in that: when carrying out sidewall of basement backfilling of earthwork, the scope apart from less than 3 meters, earth's surface adopts the backfill of C15 element concrete; The scope of 3 meters below earth's surface is interior adopts cohesive soil backfill and compaction in layers.
3. the construction method of basement bottom board release water buoyancy method water drainage system according to claim 2, is characterized in that: described argillic horizon transmission coefficient should be less than or equal to 5 ~ 10cm/s.
4. a basement bottom board release water buoyancy method water drainage system, it is characterized in that: have crisscross netted weeper drain at the undisturbed soil or backbreak of basement bottom board (6) below (1) the upper excavation that bankets, continuous print plastic protection net (2) is equipped with in every bar weeper drain, plastic blind-ditch pipe (7) is buried underground in the weeper drain being equipped with plastic protection net (2), and cover with rubble drainage blanket (3), the outfall of described plastic blind-ditch pipe (7) is communicated with collecting well (14), collecting well (14) is connected with dewatering installation (12) by transparent water pipe (13), rubble drainage blanket (3) is equipped with polyethylene protective film every pulp layer (4), has built concrete cushion (5) at polyethylene protective film in pulp layer (4), basement bottom board (6) is arranged on concrete cushion (5).
5. basement bottom board release water buoyancy method water drainage system according to claim 4, is characterized in that: described weeper drain is more than or equal to 0.5% towards the drainage grade in collecting well (14) direction.
6. basement bottom board release water buoyancy method water drainage system according to claim 4, is characterized in that: the outer wall of described plastic blind-ditch pipe (7) is enclosed with geotextiles.
7. basement bottom board release water buoyancy method water drainage system according to claim 4, it is characterized in that: the ballast grain sizes of described rubble drainage blanket (3) is 5 ~ 20mm, ramming degree of filling out is 0.9.
8. basement bottom board release water buoyancy method water drainage system according to claim 4, is characterized in that: described dewatering installation (12) is water tap or automatic water pump.
9. basement bottom board release water buoyancy method water drainage system according to claim 4, is characterized in that: described basement bottom board (6) surface is provided with building coats (8).
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065627A (en) * | 2016-07-06 | 2016-11-02 | 上海建工四建集团有限公司 | Building base plate drainage system and construction method thereof |
| CN106594926A (en) * | 2016-11-08 | 2017-04-26 | 广西大学 | Ground-source heat pump system based on draining anti-floating base |
| CN108589796A (en) * | 2018-04-27 | 2018-09-28 | 中铁十二局集团有限公司 | Substrate aproll processing method |
| CN112832288A (en) * | 2021-01-05 | 2021-05-25 | 厦门中建东北设计院有限公司 | Anti-floating structure of sloping field building basement and construction method thereof |
| CN113931209A (en) * | 2021-09-30 | 2022-01-14 | 上海宝冶集团有限公司 | Large-area deep foundation pit weakly permeable stratum underground water level control method |
| CN115012452A (en) * | 2022-06-15 | 2022-09-06 | 中建二局第二建筑工程有限公司 | Post-cast strip construction process and basement drainage pressure relief structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657712A (en) * | 2005-03-22 | 2005-08-24 | 无锡市建筑设计研究院有限责任公司 | Drainage and anti-float method for underground building and its used device |
| JP2005344397A (en) * | 2004-06-03 | 2005-12-15 | Takahashi Kanri:Kk | Underground water control method for basement construction |
| CN101139841A (en) * | 2006-09-04 | 2008-03-12 | 洪钟堙 | Apparatus for draining subsurface water |
| CN102322077A (en) * | 2011-07-19 | 2012-01-18 | 中交第一航务工程局有限公司 | Construction method of plastic draining plate type diversion reduced pressure impermeable body structure |
| CN203768951U (en) * | 2014-03-17 | 2014-08-13 | 江苏省城市规划设计研究院 | Basement deformation crack waterproof device with hydrophobic structure |
| CN205077527U (en) * | 2015-08-28 | 2016-03-09 | 中建四局第一建筑工程有限公司 | Drainage system is dredged to basement bottom plate release water buoyancy method |
-
2015
- 2015-08-28 CN CN201510537645.3A patent/CN105569094A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005344397A (en) * | 2004-06-03 | 2005-12-15 | Takahashi Kanri:Kk | Underground water control method for basement construction |
| CN1657712A (en) * | 2005-03-22 | 2005-08-24 | 无锡市建筑设计研究院有限责任公司 | Drainage and anti-float method for underground building and its used device |
| CN101139841A (en) * | 2006-09-04 | 2008-03-12 | 洪钟堙 | Apparatus for draining subsurface water |
| CN102322077A (en) * | 2011-07-19 | 2012-01-18 | 中交第一航务工程局有限公司 | Construction method of plastic draining plate type diversion reduced pressure impermeable body structure |
| CN203768951U (en) * | 2014-03-17 | 2014-08-13 | 江苏省城市规划设计研究院 | Basement deformation crack waterproof device with hydrophobic structure |
| CN205077527U (en) * | 2015-08-28 | 2016-03-09 | 中建四局第一建筑工程有限公司 | Drainage system is dredged to basement bottom plate release water buoyancy method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106065627A (en) * | 2016-07-06 | 2016-11-02 | 上海建工四建集团有限公司 | Building base plate drainage system and construction method thereof |
| CN106065627B (en) * | 2016-07-06 | 2018-06-19 | 上海建工四建集团有限公司 | Build bottom plate drainage system and its construction method |
| CN106594926A (en) * | 2016-11-08 | 2017-04-26 | 广西大学 | Ground-source heat pump system based on draining anti-floating base |
| CN108589796A (en) * | 2018-04-27 | 2018-09-28 | 中铁十二局集团有限公司 | Substrate aproll processing method |
| CN112832288A (en) * | 2021-01-05 | 2021-05-25 | 厦门中建东北设计院有限公司 | Anti-floating structure of sloping field building basement and construction method thereof |
| CN113931209A (en) * | 2021-09-30 | 2022-01-14 | 上海宝冶集团有限公司 | Large-area deep foundation pit weakly permeable stratum underground water level control method |
| CN115012452A (en) * | 2022-06-15 | 2022-09-06 | 中建二局第二建筑工程有限公司 | Post-cast strip construction process and basement drainage pressure relief structure |
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Application publication date: 20160511 |
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