CN112962681A

CN112962681A - Construction method and construction structure for safe use of old basement

Info

Publication number: CN112962681A
Application number: CN202110173118.4A
Authority: CN
Inventors: 井彦青; 李娜; 王悦; 井晓菲; 贾科科
Original assignee: Qingdao Tengyuan Design Institute Co Ltd
Current assignee: Qingdao Tengyuan Design Institute Co Ltd
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2021-06-15

Abstract

The invention discloses a construction method and a construction structure for safely using an old basement, which comprises the following steps of arranging a drainage hole at every preset interval distance range on the outer wall of the basement; filling a water filtering layer in the water drainage hole; drilling holes in the water filtering layer; installing a water drainage pipe in the water drainage hole; pouring concrete into the drainage holes to form an anti-seepage blocking layer; draining the indoor end of the drainage pipe to a nearest water collecting pit; the underground water level rising type basement floor can avoid the phenomena of cracking, water seepage, floating and the like of the bottom plate of an old basement due to rising of the underground water level, and has better economic benefit and social benefit.

Description

Construction method and construction structure for safe use of old basement

Technical Field

The invention belongs to the technical field of buildings, and particularly relates to a construction method and a construction structure for safe use of an old basement.

Background

The contradiction between the rapid urban development and the shortage of urban construction land promotes the basement engineering to be widely developed and applied, and meanwhile, the engineering problem caused by the damage of the underground structure caused by the buoyancy of underground water is more and more prominent. In recent years, safety accidents caused by upward floating of the basement after heavy rain happen, particularly, the basement bottom plate of an old basement cracks, seeps water and floats upwards, so that normal use of the basement is greatly influenced, great property loss is caused, and even great potential safety hazards are formed.

In the whole anti design of floating of basement, rely on basement bottom plate dead weight and roof dead weight and the earthing dead weight on the roof to resist basement groundwater's last buoyancy jointly, the groundwater level elevation of basement use stage is higher than the anti floating of when original design and prevents the water level and is the leading cause that arouses this type of problem. Except that extreme atmospheric precipitation such as heavy rain can cause the groundwater level to rise instantaneously and exceed the anti-floating protection water level when the design originally is carried out, the underground anti-floating protection water level based on the design originally can change greatly along with natural factors such as climate, hydrogeology and the like, and factors such as groundwater exploitation, cross-basin water transfer and the like within 50 years of the basement.

The basement structure cannot be used normally according to the designed function due to the influence of various factors, so that appropriate measures are needed to be taken for the old basement which is put into use for a long time to ensure the normal use of the old basement.

Disclosure of Invention

The invention provides a construction method and a construction structure for safe use of old basements, which can avoid the phenomena of cracking, water seepage, floating and the like of a bottom plate of the old basements due to the rising of the water level of underground water and have better economic benefit and social benefit.

Firstly, the construction method for safely using the old basement comprises the following steps,

arranging a drainage hole (2) on the underground outdoor wall at intervals of a preset interval distance range (1);

filling a water filtering layer (3) in the water drainage hole (2) for draining water;

drilling holes (4) in the water filtering layer (3);

a water drainage pipe (5) is arranged in the water drainage hole (2);

pouring concrete into the drainage holes (2) to form an anti-seepage blocking layer (6);

the indoor end of the drainage pipe (5) is drained to a nearest water collecting pit (7).

In the above scheme, preferably, the indoor end of the drainage pipe (5) is connected with the drainage drain pipe to the nearest sump (7).

It is also preferable that a water permeable hole is formed in the pipe wall at one end of the drain pipe (5).

Preferably, the end of the drain pipe (5) is sealed by welding a sealing steel plate (9).

Preferably, the drainage water drainage hole (2) penetrates through the basement outer wall, the basement outer wall waterproof layer (10) and the basement outer wall waterproof protection wall (11) from inside to outside in sequence and enters the basement outer backfill soil layer (8).

Secondly, the construction structure for the safe use of the old basement is realized by the construction method for the safe use of the old basement, and comprises a water drainage pressure hole (2), a water drainage pressure pipe (5), a water filtering layer (3) and an anti-seepage blocking layer (6); the water drainage and pressure drainage hole (2) is formed in the underground outdoor wall, sequentially penetrates through the underground outer wall, the waterproof layer (10) of the underground outer wall and the waterproof protection wall (11) of the underground outer wall from inside to outside and enters the underground outdoor backfill soil layer (8); stones are filled in the water drainage holes (2) to form a water filtering layer (3); the water filtering layer (3) is drilled with an opening (4); one end of the water drainage pipe (5) horizontally extends out of the water filtering layer (3) from inside to outside along the water drainage hole (2) and an anti-seepage blocking layer (6) for preventing water seepage is arranged between the water drainage pipe and the outer wall of the basement; the other end of the drainage pipe (5) drains to a nearest water collecting pit (7).

In the scheme, the indoor end of the drainage pipe (5) is preferably connected with the drainage drain pipe to the nearest water collecting pit (7).

It is also preferable that the pipe wall at one end of the water discharge pipe (5) is provided with a water permeable hole.

The invention has the beneficial effects that:

the construction method and the construction structure for the old basement can avoid the phenomena of cracking, water seepage, floating and the like of the bottom plate of the old basement due to the rising of the water level of underground water, and have better economic benefit and social benefit; it has the following advantages in particular: (1) by additionally arranging the water filtering layer and the water drainage pipe with the water drainage pressure on the outer wall of the old basement, the function of draining outdoor underground water into a water collection pit preset in the basement is realized, and the problems of cracking, water seepage, floating and the like of a basement bottom plate caused by overhigh underground water head can be prevented; (2) the arrangement of the anti-seepage blocking layer can effectively block the open hole at the outer wall of the basement, and prevent underground water from permeating into the room from the hole, thereby ensuring that the underground water enters the water collecting pit from the water drainage pipe; (3) the device has sustainable operation from application, avoids repeatedly perforating and punching holes on the structure after the underground water level rises due to extreme atmospheric precipitation or other factors every time, and reduces the maintenance frequency and cost; (4) the basement structure can ensure normal use of old basements, and is reasonable in main structure, ingenious in design concept, convenient to install and use, environment-friendly in application and wide in market prospect.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic diagram of a first step of the construction method for safely using the old basement.

Fig. 2 is a schematic view of a cross section a-a of the first step of the construction method for safely using the old basement.

Fig. 3 is a schematic diagram of a second step of the construction method for safely using the old basement.

Fig. 4 is a schematic diagram of a third step of the construction method for safely using the old basement.

Fig. 5 is a schematic B-B cross-sectional view of the construction method for safely using the old basement of the present invention.

Fig. 6 is a schematic diagram of a fourth step of the construction method for safely using the old basement.

Fig. 7 is a schematic cross-sectional view of the C-C section of the construction method for safely using the old basement.

Fig. 8 is a fifth schematic diagram of the construction method for safely using the old basement.

Fig. 9 is a schematic cross-sectional view of the old basement used safely in the construction method of the invention.

Fig. 10 is a schematic view of a construction structure realized by the sixth step of the construction method for safely using the old basement.

Fig. 11 is a schematic E-E cross-sectional view of the construction structure achieved in the sixth step of the construction of the old basement for safe use.

In the figure, 1 is a preset spacing distance range, 2 is a drainage hole for drainage, 3 is a water filtering layer, 4 is an opening, 5 is a drainage pipe for drainage, 6 is an anti-seepage blocking layer, 7 is a sump, 8 is an outer backfill soil layer of the basement, 9 is a blocking steel plate, 10 is a waterproof layer of the outer wall of the basement, 11 is a waterproof protective wall of the outer wall of the basement, 12 is the outer side of the outer wall of the basement, 13 is the inner side of the outer wall of the basement, 14 is a building ground surface layer, 15 is a foundation of the outer wall of the basement, 16 is a welding part of the blocking steel plate and the drainage pipe for drainage, 17 is a drainage pipe for drainage in a drainage layer section, 18 is a water pump suction pipe, 19 is a movable cover plate of the sump, 20 is a top cover of the sump, 21 is a submersible.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Example 1

A construction method for safely using an old basement comprises the following steps,

as shown in fig. 1 and 2, a drainage hole 2 is arranged on the underground outdoor wall at intervals of a preset interval distance range 1;

as shown in fig. 3, the drainage hole 2 is filled with a water filtering layer 3;

drilling holes 4 in the filter layer 3 as shown in fig. 4 and 5;

as shown in fig. 6 and 7, a drain pipe 5 is installed in the drain hole 2;

as shown in fig. 8 and 9, concrete is poured into the drainage holes 2 to form the anti-seepage plugging layer 6;

as shown in fig. 10 and 11, the indoor end of the drain pipe 5 is guided to the nearest sump 7.

When the groundwater level rose, groundwater just can get into sluicing pressure outlet pipe 5 through filtering water layer 3, and the long outlet pipe of drainage that links to each other with sluicing pressure outlet pipe 5 is arranged into in the basement sump pit 7 nearby again, guarantees old basement normal use, avoids leading to the basement to take place fracture, infiltration, the come-up phenomenon because the groundwater level is too high.

Example 2

A construction method for safely using an old basement is similar to that in embodiment 1, and further the distance length of a preset distance interval range 1 is set to be 30 m.

Further, the water filtration layer 3 may be made of stone.

Still further, the outer diameter of the stone is set to be 10-40 mm.

It is further possible to set the inner diameter of the opening 4 to 250 mm.

Furthermore, the indoor end of the drainage pipe 5 is connected with a drainage pipe to the nearest sump 7.

Still further, the central elevation of the drainage hole 2 for draining water is set to be 0.3m lower than the designed anti-floating water level.

Further, the inner diameter of the drain hole 2 for draining water can be set to 0.5 m.

Further, the horizontal depth of the drainage holes 2 for draining water is set to a length of 0.6m penetrating the outer wall of the basement and entering the backfill soil layer 8 outside the basement.

Further, the drain pipe 5 may be a galvanized pipe.

Further, the inner diameter of the drain pipe 5 may be set to 200 mm.

Further, the wall thickness of the drain pipe 5 may be set to 8 mm.

Further, an annular steel plate may be welded to the outside of the drain pipe 5.

Further, the thickness of the plugging steel plate 9 may be set to 8 mm.

Furthermore, a water permeable hole is arranged on the pipe wall at one end of the water drainage pipe 5.

Still further, the water permeable holes may be arranged as irregular holes.

Further, the water permeable holes can be distributed irregularly.

Still further, the water permeable holes can be round holes.

Still further, the inner diameter of the water permeable hole may be set to 30 mm.

Furthermore, the open rate of the water permeable holes formed in the pipe wall at one end of the drain pipe 5 is set to 40%.

And further, the drain pipe 5 is externally wrapped with a permeable geotextile.

Furthermore, a plugging steel plate 9 may be welded to the end of the drain pipe 5 to plug the drain pipe.

Still further, the end of the drainage pipe 5 with the water permeable holes horizontally extends out of the drainage layer 3 from inside to outside along the drainage hole 2.

And the other end of the drainage pipe 5 positioned indoors can be further drained to a nearest water collecting pit 7.

And the other end of the drainage pipe 5 positioned indoors can be further connected with a drainage drain pipe to the nearest water collecting pit 7.

And further pouring expanded concrete between the drainage pipe 5 and the outer wall of the basement to form an anti-seepage blocking layer 6.

Further, the drainage holes 2 for draining water can penetrate through the basement outer wall, the basement outer wall waterproof layer 10 and the basement outer wall waterproof protection wall 11 from inside to outside in sequence and enter the basement outer backfill soil layer 8.

Further, the opening 4 may be drilled by punching.

Example 3

As shown in fig. 10 and fig. 11, a construction structure for the safe use of an old basement is realized by the construction method for the safe use of an old basement in embodiment 1 or embodiment 2, and comprises a drainage hole 2, a drainage pipe 5, a drainage layer 3 and an impermeable plugging layer 6; the water drainage and pressure drainage hole 2 is formed in the underground outdoor wall, sequentially penetrates through the underground outdoor wall, the waterproof layer 10 of the underground outdoor wall and the waterproof protection wall 11 of the underground outdoor wall from inside to outside, and enters the underground outdoor backfill soil layer 8; the water drainage hole 2 is filled with stones to form a water filtering layer 3; the water filtering layer 3 is drilled with an opening 4; one end of a water drainage pipe 5 horizontally extends into the water filtering layer 3 from inside to outside along the water drainage hole 2, and an anti-seepage plugging layer 6 for preventing water seepage is arranged between the water drainage pipe and the outer wall of the basement; the other end of the drainage pipe 5 drains to the nearest water collecting pit 7.

Example 4

A construction structure for safely using an old basement is similar to the construction structure in the embodiment 3, and further the distance length of the preset spacing distance range 1 is 30 m.

Still further, the outer diameter of the stone is set to be 10-40 mm.

Still further, the inner diameter of the opening 4 is set to 250 mm.

And furthermore, the indoor end of the drainage pipe 5 is connected with a drainage pipe to the nearest water collecting pit 7.

Further, the inner diameter of the drain hole 2 for draining water is set to 0.5 m.

Further, the drain pipe 5 may be a galvanized pipe.

Further, the inner diameter of the drain pipe 5 is set to 200 mm.

Further, the wall thickness of the drain pipe 5 may be set to 8 mm.

Furthermore, an annular steel plate can be welded on the outer side of the water drainage pipe 5.

Still further, the thickness of the plugging steel plate 9 is set to 8 mm.

Still further, the water permeable holes may be arranged as irregular holes.

Still further, the water permeable holes are irregularly distributed.

Still further, the water permeable holes are round holes.

Still further, the inner diameter of the water permeable hole is set to be 30 mm.

Further, the open ratio of the water permeable holes formed in the pipe wall at one end of the drain pipe 5 is set to 40%.

And further, the water-permeable geotextile is wrapped outside the water discharge pipe 5.

Furthermore, a plugging steel plate 9 is welded at the end part of the drain pipe 5 for plugging.

And the other end of the drainage pipe 5 positioned indoors can be further connected with a drainage drain pipe to a nearest water collecting pit 7.

And further, an anti-seepage blocking layer 6 between the drainage pipe 5 and the outer wall of the basement is a poured concrete layer.

Further, the water drainage holes 2 penetrate through the basement outer wall, the basement outer wall waterproof layer 10 and the basement outer wall waterproof protection wall 11 from inside to outside in sequence and enter the basement outer backfill soil layer 8.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A construction method for safely using an old basement. Which is characterized by comprising the following steps of,

drilling holes (4) in the water filtering layer (3);

a water drainage pipe (5) is arranged in the water drainage hole (2);

2. The construction method for the safe use of the old basement according to claim 1. It is characterized in that the indoor end of the drainage pipe (5) is connected with a drainage pipe to a nearest water collecting pit (7).

3. The construction method for the safe use of the old basement according to claim 1. It is characterized in that a water permeable hole is arranged on the pipe wall at one end of the water discharge pipe (5).

4. The construction method for the safe use of the old basement according to claim 1. The method is characterized in that a plugging steel plate (9) is welded at the end part of the drain pipe (5) for plugging.

5. The construction method for the safe use of the old basement according to claim 1. The underground water drainage structure is characterized in that a water drainage pressure drainage hole (2) penetrates through the basement outer wall, the basement outer wall waterproof layer (10) and the basement outer wall waterproof protection wall (11) from inside to outside in sequence and enters an underground outdoor backfill soil layer (8).

6. Construction structure for the safe use of old basement, which is realized by the construction method for the safe use of old basement as claimed in any one of claims 1-5, characterized by comprising a drain hole (2), a drain pipe (5), a water filtering layer (3) and an anti-seepage plugging layer (6); the water drainage and pressure drainage hole (2) is formed in the underground outdoor wall, sequentially penetrates through the underground outer wall, the waterproof layer (10) of the underground outer wall and the waterproof protection wall (11) of the underground outer wall from inside to outside and enters the underground outdoor backfill soil layer (8); stones are filled in the water drainage holes (2) to form a water filtering layer (3); the water filtering layer (3) is drilled with an opening (4); one end of the water drainage pipe (5) horizontally extends out of the water filtering layer (3) from inside to outside along the water drainage hole (2) and an anti-seepage blocking layer (6) for preventing water seepage is arranged between the water drainage pipe and the outer wall of the basement; the other end of the drainage pipe (5) drains to a nearest water collecting pit (7).

7. The construction structure for the old basement to be safely used according to claim 6, wherein the indoor end of the drainage pipe (5) is connected with the drainage pipe to the nearest sump (7).

8. The construction structure of old basement for safety use as claimed in claim 6, wherein the pipe wall of one end of the drainage pipe (5) is provided with water permeable holes.

9. The construction structure for the old basement to be safely used according to claim 6, wherein the end of the drainage pipe (5) is welded with a blocking steel plate (9) for blocking.

10. The construction structure for the old basement to be safely used according to claim 6, wherein the drainage holes (2) penetrate through the basement outer wall, the basement outer wall waterproof layer (10) and the basement outer wall waterproof protection wall (11) from inside to outside in sequence and enter the basement outer backfill soil layer (8).