CN211898403U - Foundation pit with lateral wall frost heaving prevention layout - Google Patents
Foundation pit with lateral wall frost heaving prevention layout Download PDFInfo
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- CN211898403U CN211898403U CN202020198856.5U CN202020198856U CN211898403U CN 211898403 U CN211898403 U CN 211898403U CN 202020198856 U CN202020198856 U CN 202020198856U CN 211898403 U CN211898403 U CN 211898403U
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- lateral wall
- foundation ditch
- foundation pit
- frost heaving
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Abstract
The utility model provides a foundation ditch with lateral wall frost heaving prevention overall arrangement, belongs to construction technical field, the lateral wall of foundation ditch is equipped with the outlet, the outlet is the tubular metal resonator drain pipe, the wash port has been seted up on the tubular metal resonator, one section outside parcel that the tubular metal resonator inserted the foundation ditch lateral wall soil body has the drainage gauze, the tubular metal resonator links to each other with the power cathode, the metal rod links to each other with the power anode, the metal rod corresponds the setting with the tubular metal resonator of homonymy, position earth's surface is equipped with waterproof geotechnological cloth on foundation ditch upper portion between metal rod and foundation ditch lateral wall. The utility model discloses a set up the tubular metal resonator and link to each other with the power negative pole, the metal rod links to each other with the power positive pole, and the two corresponds the setting, makes the smooth discharge of moisture in the soil, and the method that reduces the soil body water content prevents that the foundation ditch lateral wall from taking place the soil body frost heaving destruction.
Description
Technical Field
The utility model belongs to the technical field of the construction, a foundation ditch with lateral wall prevents frostbite and expands overall arrangement specifically says so.
Background
In the foundation pit engineering of the construction in the seasonally frozen soil area, for the foundation pit engineering needing overwintering use, because the foundation pit can not be backfilled, the side wall of the foundation pit is exposed in the external low-temperature environment, if the soil body of the side wall of the foundation pit has frost heaving property, the frost heaving of the soil body of the side wall of the foundation pit can increase the horizontal load borne by the supporting structure in the process of using the foundation pit in the overwintering process, so that the supporting structure has the risks of internal force increase, deformation, damage and the like; for the parts among piles in the sparse pile support form, frost heaving easily causes the soil among the piles to fall off, and even can damage the protective surface layer of the side wall, so that the side wall of the foundation pit collapses.
The water in the soil is an important factor influencing the engineering property of the soil and is also a necessary condition for frost heaving of the soil, the volume of the water in the soil is increased in the process of freezing when the environmental temperature is reduced below the freezing point, so that the frost heaving phenomenon of the soil is caused, the water content of the water which is not frozen in the soil is a main factor determining the frost heaving of the soil, the influence on the frost heaving is very large, and the key for preventing the frost heaving in the engineering is how to reduce the water content of the soil.
SUMMERY OF THE UTILITY MODEL
In order to overcome the technical problem, the utility model provides a foundation ditch with lateral wall prevents frostbite and expands overall arrangement links to each other with the power negative pole through setting up the tubular metal resonator, and the metal rod links to each other with the power positive pole, and the two corresponds the setting, makes the moisture discharge smoothly in the soil, and the method that reduces soil body water content prevents that the foundation ditch lateral wall from taking place the soil body frost heaving destruction.
The utility model adopts the following technical scheme:
the utility model provides a foundation ditch with lateral wall frost heaving prevention overall arrangement, the lateral wall of foundation ditch is equipped with the outlet, the outlet is the tubular metal resonator drain pipe, the wash port has been seted up on the tubular metal resonator, one section outer wall parcel that the tubular metal resonator inserted the lateral wall soil body has the drainage gauze, the tubular metal resonator links to each other with the power negative pole, has inserted the metal rod in the foundation ditch of outlet one side, the metal rod links to each other with the power positive pole, the metal rod corresponds the setting with the tubular metal resonator of homonymy, earth's surface position is equipped with waterproof geotechnological cloth on foundation ditch upper portion between metal rod and foundation ditch lateral.
Furthermore, the drain holes on the metal pipe are arranged in a quincunx shape, the hole diameter is 10mm, and the hole distance is 50 mm.
Further, the distance between the metal rod and the side wall of the foundation pit is one time of the local standard freezing depth.
Furthermore, the drain holes are distributed on the side wall of the foundation pit according to the transverse and vertical intervals of 1.5m-2.5m and are connected in series to the power supply cathode.
Further, the pipe diameter of the metal pipe is 50mm, and the pipe length is 300 mm.
Further, the metal tube is sloped 5% downward.
The utility model has the advantages that:
1. the utility model discloses a free water and the partial weak binding water in the electro-osmosis effect forced discharge foundation ditch lateral wall freezes the degree of depth scope soil body can reduce the moisture content that freezes the degree of depth within range soil body in the short time, prevents effectively that the soil body from taking place to frost heave.
2. The power supply can be stopped only by supplying power for a short time before freezing and reducing the water content in the soil body, and the freezing of the soil body is carried out under the low water content due to the cut-off of the external water supply, so that the frost heaving is not caused any more.
Drawings
FIG. 1 is a schematic structural diagram of a foundation pit with a side wall frost heaving prevention layout;
FIG. 2 is an elevation view of a foundation pit;
fig. 3 is a schematic view of a drain hole structure.
The components in the figure: 1 is a metal bar, 2 is a water drainage hole, 3 is a side wall of a foundation pit, 4 is waterproof geotextile, 5 is a metal pipe, and 6 is water filtration gauze.
Detailed Description
The present invention will be further explained with reference to the drawings and the embodiments.
As shown in figures 1-3, the utility model relates to a foundation ditch with lateral wall frost heaving prevention overall arrangement adopts phi 50mm tubular metal resonator as the outlet drain pipe, and the wash port is arranged to the pipe length 300mm, pipe shaft quincunx, aperture 10mm, hole interval 50mm, outside parcel drainage gauze. The drain holes are arranged on the side wall of the foundation pit at the transverse and vertical intervals of 1.5m-2.5m and are connected to the power supply cathode in series; and inserting a metal rod at a position, which is one time of the local standard freezing depth, of the outer side of the drain hole from the side wall of the foundation pit, wherein the metal rod is connected with a power supply anode.
And (3) paving waterproof geotextile on the ground surface within one time of the local standard freezing depth range at the upper part of the side wall of the foundation pit to prevent surface water from permeating into the soil body of the side wall of the foundation pit so as to cut off external water supply.
Before the environmental temperature is lower than the freezing temperature, the power supply is used for carrying out direct current power supply, water with positive charges moves to a potential low position under the action of an external electric field because water in a soil body has positive charges, so that the water in the soil body within the freezing depth range of the side wall of the foundation pit is collected to a water drainage hole connected with a cathode of the power supply and flows out of the side wall of the foundation pit through the water drainage hole, free water and even partial weak binding water in the soil body can be discharged by the method, the water content of the soil body within the freezing depth range is reduced, and the soil body is effectively prevented from being frozen and expanded.
Claims (6)
1. The utility model provides a foundation ditch with lateral wall prevents frostbite and expands overall arrangement which characterized in that: the lateral wall of foundation ditch is equipped with outlet (2), outlet (2) are tubular metal resonator (5) drain pipe, the wash port has been seted up on tubular metal resonator (5), tubular metal resonator (5) insert one section outer wall parcel of the lateral wall soil body have drainage gauze (6), tubular metal resonator (5) link to each other with the power negative pole, have inserted metal rod (1) in the foundation ditch interpolation of outlet (2) one side, metal rod (1) link to each other with the power positive pole, metal rod (1) correspond the setting with tubular metal resonator (5) of homonymy, foundation ditch upper portion earth's surface position is equipped with waterproof geotechnological cloth (4) between metal rod (1) and foundation ditch lateral wall.
2. A foundation pit with an anti-frost heaving sidewall arrangement as claimed in claim 1, wherein: the drain holes on the metal pipe (5) are arranged in a quincunx shape, the hole diameter is 10mm, and the hole distance is 50 mm.
3. A foundation pit with an anti-frost heaving sidewall arrangement as claimed in claim 1, wherein: the distance between the metal rod (1) and the side wall of the foundation pit is one time of the local standard freezing depth.
4. A foundation pit with an anti-frost heaving sidewall arrangement as claimed in claim 1, wherein: the drainage holes (2) are distributed on the side wall of the foundation pit according to the size of water content in soil and the horizontal and vertical intervals of 1.5m-2.5m, and are connected to the power supply cathode in series.
5. A foundation pit with an anti-frost heaving sidewall arrangement as claimed in claim 1, wherein: the pipe diameter of the metal pipe (5) is 50mm, and the pipe length is 300 mm.
6. A foundation pit with an anti-frost heaving sidewall arrangement as claimed in claim 1, wherein: the metal pipe (5) is downward inclined by 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020198856.5U CN211898403U (en) | 2020-02-24 | 2020-02-24 | Foundation pit with lateral wall frost heaving prevention layout |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020198856.5U CN211898403U (en) | 2020-02-24 | 2020-02-24 | Foundation pit with lateral wall frost heaving prevention layout |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211898403U true CN211898403U (en) | 2020-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202020198856.5U Active CN211898403U (en) | 2020-02-24 | 2020-02-24 | Foundation pit with lateral wall frost heaving prevention layout |
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| CN (1) | CN211898403U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111335320A (en) * | 2020-02-24 | 2020-06-26 | 辽宁省建筑设计研究院岩土工程有限责任公司 | Anti-frost-heaving method for side wall of foundation pit |
| CN115045299A (en) * | 2022-07-26 | 2022-09-13 | 杭州市西站枢纽开发有限公司 | Deep and large foundation pit side wall reinforcing structure with electroosmosis drainage function and construction method |
-
2020
- 2020-02-24 CN CN202020198856.5U patent/CN211898403U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111335320A (en) * | 2020-02-24 | 2020-06-26 | 辽宁省建筑设计研究院岩土工程有限责任公司 | Anti-frost-heaving method for side wall of foundation pit |
| CN115045299A (en) * | 2022-07-26 | 2022-09-13 | 杭州市西站枢纽开发有限公司 | Deep and large foundation pit side wall reinforcing structure with electroosmosis drainage function and construction method |
| CN115045299B (en) * | 2022-07-26 | 2024-02-02 | 杭州市西站枢纽开发有限公司 | Deep foundation pit side wall reinforcing structure with electroosmosis drainage function and construction method |
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