CN1657712A

CN1657712A - Drainage and anti-float method for underground building and its used device

Info

Publication number: CN1657712A
Application number: CN 200510038548
Authority: CN
Inventors: 张二光; 承明秋; 何岳兴; 戴巧其; 裘智昂; 杨传新; 黄志平
Original assignee: WUXI BUILDING DESIGN INST CO Ltd
Current assignee: WUXI BUILDING DESIGN INST CO Ltd
Priority date: 2005-03-22
Filing date: 2005-03-22
Publication date: 2005-08-24

Abstract

Draining and anti-floating method of under ground building and its device relates to building technology. In accordance with the proposal of the invention, draining pipe is set in the foundation of underground building, with void on it for underground water penetrating into it, assembling the underground water then draining it, being blind drain with drainage outlet, then the water is sent out through draining pipe. The invention makes use of draining pipe underground to drain the underground water out, effectively solving the auti-floating of underground building.

Description

The drainage and anti-float method of underground structure and used device thereof

Technical field

The present invention relates to Building technology, specifically a kind of method and apparatus that solves the underground structure come-up.

Background technology

The underground building is generally adopted in engineering construction.The equipment that the underground building can be used as construction work is with room, the garage that has a large capacity and a wide range and air etc., especially garage, indoor bicycle parking area homalographic are very big, these large-scale basements are except that there is top-out the part, mat formation as earth backing, greening, ground level road, environment mostly etc., the basement that has has two layers, even three layers, buried depth is very dark.Some regional bury of groundwater are more shallow, and rainwater is more, and the river system prosperity causes basement to soak and floats among the underground water, and therefore, basement floats phenomenon and causes basement and ground breaks away from and also to happen occasionally.

Underground water is from two aspects, and the one, soil layer infiltration, or soil layer artesian water, the 2nd, surface water.

Basement " still should carry out the anti-floating checking computations ", and this is the mandatory provisions among the State Standard of the People's Republic of China.Therefore there is the underground building of water buoyancy in design, must check for each, and must takes corresponding measure to guarantee the stable of basement.When basement is one deck, and buried depth is very shallow, and buoyancy of water hour usually adopts the earth backing that strengthens on the basement top or the method for thickening basement concrete top board and base plate thickness, comes the balance buoyancy of water with ballast, makes it to keep stable.

Because the needs of basement function: as the reason of ventilation, fire-fighting, people's air defense, equipment equal altitudes, the headway of basement is higher, and perhaps basement is that two layers or more multi-layered number are to satisfy user demand, at this moment, the basement buried depth is big, and buoyancy of water is just big, generally is not can solve with ballast.Method commonly used is to adopt to add some anti-floating stakes under basement bottom board, basement bottom board is resisted the pull out force that upwards floats that produces because of water buoyancy by the gravity that is embedded in the stake in the soil with the frictional force around the stake, to keep the stable of basement, in general, stake has two kinds of forms, the one, drilled pile, the 2nd, preformed pile also has indivedual employing root piles.

Exist the basement of water buoyancy problem almost all to adopt above two kinds of methods.Coming the method for anti-floating with stake is efficient ways, but this method need be changed more investment, and the while is the more construction operation time of needs also, also can produce certain environment pollution.

Summary of the invention

The objective of the invention is to seek a kind of drainage and anti-float method of underground structure and used device thereof, utilization is layed in underground drainage channel gets rid of underground water, thereby solves the anti-floating problem of underground structure.

According to design scheme provided by the present invention, in the ground of underground structure, drainage channel is set, on drainage channel, be useful on the hole that groundwater seepage is gone into drainage channel, after compiling underground water, drainage channel gets rid of again.

Drainage channel can be a kind of rubble french drain, every a segment distance outfall is set on french drain, with gutter the underground water in the outfall is transferred out again.

Drainage channel also can adopt gutter, is provided for underground water and enters permeable hole in the gutter on the wall of gutter, at this moment prefabricated gutter directly can be layed in the ground.

Drainage channel has some to become network-like layout, and each drainage channel is interconnected or is not communicated with.Some position on drainage channel is provided with collecting well, and the delivery port that is positioned at the gutter end stretches into collecting well, and water pump and pipeline thereof are installed in collecting well, and pipe extension is to being arranged in the drainage on every side of underground structure.

The device that a kind of drainage and anti-float method of underground structure is used is characterized in that: on the wall of prefabricated gutter permeable hole is set.Described gutter can directly be embedded in the ground of building.One end of described gutter is embedded in the rubble french drain below the building.

Periphery in the underground structure is provided with the blocking-up facility.Described blocking-up facility can be the concrete of cast, or the dirt of compaction in layers, and wherein lime-soil ratio is 3: 7, or pitch paying or cast waterproofing course.

Advantage of the present invention is: below the ground of building drainage channel is set, utilize this drainage channel to compile underground water, and then the underground water that pools together is got rid of by conveying equipment, solve the anti-floating problem of underground building with this, compare with original anti-floating mode, characteristics such as it is low that the present invention has cost, and easy to operate, anti-floating is effective.

Description of drawings

Fig. 1 is a layout plan of the present invention.

Fig. 2 is an elevation of the present invention.

The specific embodiment

Fig. 1,2 is a kind of arrangement of the present invention, as shown in the figure: the following of the base plate 2 of underground structure is ground, rubble french drain 3 is set in ground, on rubble french drain 3, outfall 4 is set every a segment distance, in outfall 4, lay gutter 5 again, with gutter 5 underground water in the outfall 4 is transferred out, some permeable holes 14 can be set, be beneficial to underground water and enter in the gutter 5 in the end of gutter 5.Owing to itself a lot of gaps are just arranged between the rubble of rubble french drain 3, underground water is easy to infiltration enters, again by the Clearance Flow that is interconnected to outfall 4,, be positioned at the hole that the rubble gap just is equivalent to drainage channel here.

Rubble french drain 3 has some to become network-like layout, each rubble french drain 3 is interconnected, collecting well 7 can be set on rubble french drain 3 selectively, at this moment, the delivery port 6 of gutter 5 ends is positioned at collecting well 7, underground water drains in the collecting well 7 through gutter 5, and water pump 12 and pipeline 8 thereof are installed in collecting well 7, and pipeline 8 extends to and is arranged in the building drainage 9 on every side.When the underground water in the collecting well 7 accumulates to when a certain amount of, just start water pump 12, underground water is delivered to by its pipeline 8 in the gutter of outside or in other drainage.When underground water was many, water pump 12 needed continuous operation.Among Fig. 11 is basement post and cushion cap thereof.

Drainage channel also can directly adopt gutter 5, permeable hole 14 is set on the wall of gutter 5, at this moment, should directly be embedded in gutter 5 underground, and become network-like layout with some equally, each gutter 5 can be interconnected, can not be communicated with yet, when being interconnected, can collecting well 7 be set at some position of gutter, when not being communicated with mutually or part when being communicated with, then should collecting well 7 be set at every gutter 5, or collecting well 7 is set on partial drainage pipe 5, underground water penetrates in the gutter 5 through permeable hole 14, drains in the collecting well 7 through gutter 5.In this case, can not establish outfall 4.The delivery port 6 of gutter 5 ends should be laid to collecting well 7 equally.And permeable hole 14 just equals the hole of above-mentioned drainage channel.

In some cases, also can not establish collecting well 7, directly underground water is caused in the drainage of outside with gutter 5, get rid of again.

In order to reduce or to avoid the surface water to enter in the ground below the base plate 2, blocking-up facility in water source can be set at the periphery of underground structure, these blocking-up facilities can adopt in the underground structure on every side and the anti-mode of 11 fluid concretes of going along with sb. to guard him of base, the surface water is blocked on base plate 2, when being construction, builds bracing of foundation pit 11, generally, after basement is built up, can between bracing of foundation pit 11 and underground structure, stay the space, after construction is finished, just fill without loose building waste or other discarded object of compacting with some, in the sleet sky, rainwater is easy in the ground below this space enters base plate 2, the present invention is after underground structure and 11 of bracing of foundation pit have been poured into a mould concrete 10, can effectively avoid the surface water to flow in the ground, thereby reduce the buoyancy of the phreatic water yield underground building base plate 2 by the gap.

Blocking-up facility in water source can also adopt the way of compaction in layers dirt in the gap except said method, wherein lime-soil ratio is 3: 7, perhaps pitch paying or cast waterproofing course etc. betwixt.

Claims

1, the drainage and anti-float method of underground structure is characterized in that: in the ground of underground structure drainage channel is set, is useful on the hole that groundwater seepage is gone into drainage channel on drainage channel, get rid of after drainage channel compiles underground water again.

2, the drainage and anti-float method of underground structure according to claim 1, it is characterized in that: drainage channel is rubble french drain (3), upward outfall (4) is set at french drain (3), uses gutter (5) that the underground water in the outfall (4) is transferred out again every a segment distance.

3, the drainage and anti-float method of underground structure according to claim 1 is characterized in that: drainage channel is gutter (5), is provided for underground water and enters permeable hole (14) in the gutter (5) on the wall of gutter (5).

4, according to the drainage and anti-float method of claim 1 or 2 or 3 described underground structures, it is characterized in that: drainage channel has some to become network-like layout, and each drainage channel is interconnected or is not communicated with.

5, according to the drainage and anti-float method of claim 1 or 2,3 described underground structures, it is characterized in that: some position on drainage channel is provided with collecting well (7), the delivery port (6) of gutter (5) end stretches in the collecting well (7), water pump (12) and pipeline (8) thereof are installed in collecting well (7), and pipeline (8) extends to and is arranged in the drainage (9) on every side of underground structure.

6, the used dewatering installation of a kind of drainage and anti-float method of underground structure is characterized in that: permeable hole (14) is set on the wall of prefabricated gutter (5).

7, the dewatering installation used according to the drainage and anti-float method of the described underground structure of claim 6, it is characterized in that: gutter (5) directly is embedded in the ground of building.

8, the dewatering installation used according to the drainage and anti-float method of the described underground structure of claim 6 is characterized in that: an end of gutter (5) is embedded in the rubble french drain (3) below the building.

9, the drainage and anti-float method of underground structure according to claim 1 is characterized in that: the periphery in the underground structure is provided with the blocking-up facility.

10, the drainage and anti-float method of underground structure according to claim 9 is characterized in that, the blocking-up facility is a fluid concrete, or the dirt of compaction in layers, and wherein lime-soil ratio is 3: 7, or pitch paying or cast waterproofing course.