阅读说明：本技术 一种土建施工基坑排水结构及其施工方法 (Civil construction foundation pit drainage structure and construction method thereof ) 是由 肖莹莹 曾建伟 戴利平 顾金林 周勇军 蒋吕祯 何星 于 2021-09-28 设计创作，主要内容包括：本发明公开一种土建施工基坑排水结构及其施工方法,该土建施工基坑排水结构,包括基坑本体,所述基坑本体包括基底和侧壁；所述基坑本体的基底上凹设有排水槽,所述排水槽具有坡度,在坡度的最低处设有储水井,所述储水井内设有抽水管；所述排水槽上设有过滤装置。该土建施工基坑排水结构通过在排水槽中设置储水井,利用储水井收集排水槽内的水,可避免排水槽内的水往外渗出,可有效地降低抽水频率；通过在排水槽内设置坡度,提高排水槽内的水流到储水井内的速度,加快排水,避免在暴雨天气中排水槽内的水往外渗出；通过在排水槽上方设置过滤装置,可避免垃圾、落叶、石头等大体积物件进入排水槽,避免堵塞抽水管。(The invention discloses a civil construction foundation pit drainage structure and a construction method thereof, wherein the civil construction foundation pit drainage structure comprises a foundation pit body, wherein the foundation pit body comprises a base and a side wall; a drainage groove is concavely arranged on the base of the foundation pit body, the drainage groove has a slope, a water storage well is arranged at the lowest position of the slope, and a water pumping pipe is arranged in the water storage well; and a filtering device is arranged on the drainage groove. According to the drainage structure of the civil construction foundation pit, the water storage well is arranged in the drainage groove, and water in the drainage groove is collected by the water storage well, so that the water in the drainage groove can be prevented from seeping outwards, and the water pumping frequency can be effectively reduced; the slope is arranged in the drainage groove, so that the speed of water in the drainage groove flowing into the water storage well is increased, drainage is accelerated, and water in the drainage groove is prevented from seeping outwards in heavy rain; through set up filter equipment above water drainage tank, can avoid bulky article such as rubbish, fallen leaves, stone to get into water drainage tank, avoid blockking up the drinking-water pipe.)

1. A civil engineering construction foundation pit drainage structure is characterized by comprising a foundation pit body, wherein the foundation pit body comprises a base and a side wall; a drainage groove is concavely arranged on the base of the foundation pit body, the drainage groove has a slope, a water storage well is arranged at the lowest position of the slope, and a water pumping pipe is arranged in the water storage well; and a filtering device is arranged on the drainage groove.

2. The drainage structure of a civil construction foundation pit according to claim 1, wherein the inner walls of the drainage channel and the water storage well are provided with anti-seepage layers.

3. The drainage structure of a civil construction foundation pit according to claim 2, wherein the anti-seepage layer is waterproof concrete laid on the inner walls of the drainage channel and the water storage well, and the thickness of the anti-seepage layer is 5-20 mm.

4. The civil construction pit drainage structure of claim 1, wherein the filtering device comprises a support member provided on the drainage channel and a permeable terrace provided on the support member.

5. The civil construction foundation pit drainage structure of claim 4, wherein the support member comprises a stainless steel frame and a plurality of stainless steel grid plates embedded in the stainless steel frame; the stainless steel frame is provided with a plurality of embedded grids for embedding the stainless steel grating plates, and the bottom of each embedded grid inwards extends to form a supporting edge plate for supporting the stainless steel grating plates.

6. The civil construction foundation pit drainage structure of claim 5, wherein the drainage channel is provided with mounting steps at both sides above the drainage channel, and the support edge plate of the stainless steel frame is provided with mounting holes and is fixed on the mounting steps by pins.

7. The drainage structure of a civil construction foundation pit according to claim 1, wherein a suction pump is connected to the suction pipe.

8. The drainage structure of a civil construction foundation pit according to claim 1, wherein a water level detection device is provided in the water storage well.

9. The drainage structure of a civil construction foundation pit as claimed in claim 1, wherein the slope in the drainage channel is 5-15 °.

10. The construction method of a civil construction foundation pit drainage structure according to any one of claims 1 to 9, comprising the steps of:

s1, excavating a foundation pit body;

s2, digging a drainage groove in the foundation pit body, wherein the drainage groove has a slope, and a water storage well is arranged at the lowest position of the slope;

s3, leveling and breaking the basic body, the drainage tank and the water storage well;

s4, laying waterproof concrete on the inner walls of the drainage groove and the water storage well, wherein the waterproof concrete is concrete with the impermeability grade being more than or equal to the grade P6;

s5, arranging a stainless steel frame on the drainage channel, paving a stainless steel grating plate on the stainless steel frame, and paving a permeable terrace on the stainless steel grating plate;

s6, arranging a water pumping pipe in the water storage well, and connecting the water pumping pipe with a water pumping pump; holes for the water pumping pipe to pass through are arranged on the stainless steel grating plate and the permeable terrace on the water storage well.

Technical Field

The invention relates to the technical field of foundation pit drainage, in particular to a civil construction foundation pit drainage structure and a construction method thereof.

Background

The foundation pit drainage is used as an important component part for foundation pit engineering protection, has an important effect on foundation pit engineering safety, and a drainage ditch is arranged in a foundation pit in a general foundation pit drainage structure, and water in the drainage ditch is pumped away through a pumping device. For example, chinese patent publication No. CN213448533U discloses a drainage structure for a foundation pit, which includes a foundation pit, a drainage strip and a pipe. The bottom of the foundation pit is provided with a bottom plate, a drainage groove is formed between the bottom plate and the side wall of the foundation pit, the drainage belt comprises a first end and a second end, the first end is positioned in the drainage groove and connected with a drainage pump, the second end is positioned at the top of the side wall, and the second end is used for draining water; the pipeline is provided with a water inlet and a water outlet, the water inlet is connected with the second end, and the water outlet is connected with the water pumping device. When the place is comparatively narrow, the drainage of foundation ditch that can be smooth and easy completion through the embodiment of foundation ditch drainage structures. However, the drainage ditch is shallow, so that the water pumping device is inconvenient to pump water, the water pumping frequency of the water pumping device is high, and the energy consumption is large; in addition, the escape canal is longer, in order to take away the water in the escape canal, need distribute a plurality of water pumping points on the escape canal, increase cost and be not convenient for maintenance management.

Disclosure of Invention

In view of the above, the present invention provides a drainage structure for a foundation pit of civil construction, and a construction method for the drainage structure for the foundation pit of civil construction, which aims to solve the problems of inconvenience in water pumping and need of multiple water pumping points of the existing drainage structure for the foundation pit at least to a certain extent.

The technical scheme of the invention on one hand is realized as follows:

a civil construction foundation pit drainage structure comprises a foundation pit body, wherein the foundation pit body comprises a base and a side wall; a drainage groove is concavely arranged on the base of the foundation pit body, the drainage groove has a slope, a water storage well is arranged at the lowest position of the slope, and a water pumping pipe is arranged in the water storage well; and a filtering device is arranged on the drainage groove.

As a further alternative of the drainage structure of the civil construction foundation pit, the inner walls of the drainage groove and the water storage well are provided with anti-seepage layers.

As a further alternative of the drainage structure of the civil construction foundation pit, the anti-seepage layer is made of waterproof concrete paved on the inner walls of the drainage groove and the water storage well, and the thickness of the anti-seepage layer is 5-20 mm.

As a further alternative of the drainage structure of the civil engineering foundation pit, the filtering device comprises a supporting member arranged on the drainage channel and a permeable terrace arranged on the supporting member.

As a further alternative of the civil engineering foundation pit drainage structure, the supporting member comprises a stainless steel frame and a plurality of stainless steel grating plates embedded on the stainless steel frame; the stainless steel frame is provided with a plurality of embedded grids for embedding the stainless steel grating plates, and the bottom of each embedded grid inwards extends to form a supporting edge plate for supporting the stainless steel grating plates.

As a further alternative of the drainage structure of the civil construction foundation pit, mounting steps are arranged on two sides above the drainage channel, mounting holes are formed in the supporting edge plates of the stainless steel frame, and the supporting edge plates of the stainless steel frame are fixed on the mounting steps through pins.

As a further alternative of the drainage structure of the civil construction foundation pit, the water suction pipe is connected with a water suction pump.

As a further alternative of the drainage structure of the civil construction foundation pit, a water level detection device is arranged in the water storage well.

As a further alternative of the drainage structure of the civil construction foundation pit, the gradient in the drainage groove is 5-15 degrees.

According to the drainage structure of the civil construction foundation pit, the water storage well is arranged in the drainage groove, and water in the drainage groove is collected by the water storage well, so that the water in the drainage groove can be prevented from seeping outwards, and the water pumping frequency can be effectively reduced; the slope is arranged in the drainage groove, so that the speed of water in the drainage groove flowing into the water storage well is increased, drainage is accelerated, and water in the drainage groove is prevented from seeping outwards in heavy rain; through set up filter equipment above water drainage tank, can avoid bulky article such as rubbish, fallen leaves, stone to get into water drainage tank, avoid blockking up the drinking-water pipe.

The technical scheme of the other aspect of the invention is realized as follows:

the construction method based on the civil construction foundation pit drainage structure comprises the following steps:

s1, excavating a foundation pit body;

s2, digging a drainage groove in the foundation pit body, wherein the drainage groove has a slope, and a water storage well is arranged at the lowest position of the slope;

s3, leveling and breaking the basic body, the drainage tank and the water storage well;

s4, laying waterproof concrete on the inner walls of the drainage groove and the water storage well, wherein the waterproof concrete is concrete with the impermeability grade being more than or equal to the grade P6;

s5, arranging a stainless steel frame on the drainage channel, paving a stainless steel grating plate on the stainless steel frame, and paving a permeable terrace on the stainless steel grating plate;

s6, arranging a water pumping pipe in the water storage well, and connecting the water pumping pipe with a water pumping pump; holes for the water pumping pipe to pass through are arranged on the stainless steel grating plate and the permeable terrace on the water storage well.

The foundation pit drainage structure constructed by the construction method can reduce the water pumping frequency, so that the energy consumption of the water pumping device is reduced; the arrangement of water pumping points can be reduced, so that the cost is reduced and the maintenance and the management are convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.

FIG. 1 is a schematic view of the construction of the drainage channel and the filtering device according to the present invention;

FIG. 2 is a schematic structural view of the drainage channel and the water storage well according to the present invention;

FIG. 3 is a schematic structural view of the water storage well and the water pumping pipe according to the present invention;

FIG. 4 is a schematic structural view of the support member of the present invention;

fig. 5 is a schematic structural view of the stainless steel frame fixed on the mounting step according to the present invention.

In the figure: 1. a foundation pit body; 11. a substrate; 12. a side wall; 2. a water discharge tank; 3. a water storage well; 4. a filtration device; 41. a support member; 411. a stainless steel frame; 412. a stainless steel grating plate; 413. embedding grids; 414. supporting the edge plate; 415. mounting holes; 5. a water pumping pipe; 6. an anti-seepage layer; 7. a pin; 8. a water pump.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Based on the embodiments of the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1-5, there is shown a civil construction foundation pit drainage structure comprising a foundation pit body 1, the foundation pit body 1 comprising a base 11 and sidewalls 12; a drainage groove 2 is concavely arranged on a base 11 of the foundation pit body 1, the drainage groove 2 has a slope, a water storage well 3 is arranged at the lowest position of the slope, and a water pumping pipe 5 is arranged in the water storage well 3; and a filtering device 4 is arranged on the drainage groove 2. Wherein preferably, the slope in the drainage channel 2 is 5-15 °.

In brief, the drainage structure of the civil construction foundation pit is characterized in that the water storage well 3 is arranged in the drainage groove 2, and water in the drainage groove 2 is collected by the water storage well 3, so that the water in the drainage groove 2 can be prevented from seeping outwards, and the water pumping frequency can be effectively reduced; the slope is arranged in the drainage channel 2, so that the speed of water in the drainage channel 2 flowing into the water storage well 3 is increased, drainage is accelerated, and water in the drainage channel 2 is prevented from seeping outwards in rainstorm weather; through set up filter equipment 4 above water drainage tank 2, can avoid bulky article such as rubbish, fallen leaves, stone to get into water drainage tank 2, avoid blockking up drinking-water pipe 5.

In the above embodiment, in order to ensure that water can flow through the water storage well 3 in the water drainage channel 2 instead of penetrating into the soil layer to damage the foundation pit structure, referring to fig. 5, the inner walls of the water drainage channel 2 and the water storage well 3 are provided with anti-seepage layers 6. Wherein, in order to avoid the easy wearing and tearing of anti permeable layer 6 are worn and penetrated, anti permeable layer 6 is for laying in the water drainage tank 2 and the waterproof concrete of water storage well 3 inner wall, the thickness of anti permeable layer 6 is 5-20 mm.

In the above embodiment, referring to fig. 1, the filtering device 4 includes a supporting member 41 disposed on the drainage channel 2, and a water-permeable terrace disposed on the supporting member 41. The permeable terrace can enable rainwater to rapidly permeate into the ground surface, and the problem of water accumulation in the foundation pit is solved; and the safety and the comfort of walking can be improved. In addition, the supporting member 41 can improve the structural stability of the permeable terrace, and avoid the permeable terrace from sinking or breaking.

In the above embodiment, referring to fig. 4, the supporting member 41 includes a stainless steel frame 411 and a plurality of stainless steel grating plates 412 embedded in the stainless steel frame 411; the stainless steel frame 411 is provided with a plurality of embedded lattices 413 for embedding the stainless steel grating plates 412, and the bottom of the embedded lattices 413 extends inwards to form supporting edge plates 414 for supporting the stainless steel grating plates 412. Wherein, the both sides above drain tank 2 have the installation step, be equipped with mounting hole 415 on the support border board 414 of stainless steel frame 411, the support border board 414 of stainless steel frame 411 is fixed through pin 7 on the installation step.

In the above embodiment, in order to extract water in the water storage well 3, referring to fig. 3, the water pumping pipe 5 is connected to a water pumping pump 8. In addition, the operating frequency of the water pump 8 is reduced as much as possible, and a water level detecting device (not shown) is provided in the water storage well 3.

The construction method of the drainage structure of the civil construction foundation pit comprises the following steps:

s1, excavating a foundation pit body 1;

s2, digging a drainage groove 2 in the foundation pit body 1, wherein the drainage groove 2 has a slope, and a water storage well 3 is arranged at the lowest part of the slope;

s3, leveling and breaking the basic body, the drainage groove 2 and the water storage well 3;

s4, laying waterproof concrete on the inner walls of the drainage tank 2 and the water storage well 3, wherein the waterproof concrete is concrete with the impermeability grade being more than or equal to the grade P6;

s5, arranging a stainless steel frame 411 on the drainage channel 2, paving a stainless steel grating plate 412 on the stainless steel frame 411, and paving a permeable terrace on the stainless steel grating plate 412;

s6, arranging a water pumping pipe 5 in the water storage well 3, and connecting the water pumping pipe 5 with a water pumping pump 8; holes for the water pumping pipe 5 to pass through are arranged on the stainless steel grating plate 412 and the permeable terrace on the water storage well 3.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.