CN217517606U - Environment-friendly foundation pit slope soil nailing wall structure - Google Patents

Abstract

The utility model relates to an environmental protection foundation ditch side slope soil nailing wall structure relates to excavation supporting construction's field, and it includes side slope, drainage structures, and drainage structures sets up in the side slope, and drainage structures includes water service pipe, drain pipe, and in the side slope was inserted to the one end of water service pipe, the other end of water service pipe exposed the lateral wall of side slope, and in the drain pipe was worn to locate the water service pipe, a plurality of inlet openings had been seted up on the lateral wall of water service pipe, a plurality of drainage holes had been seted up on the lateral wall of drain pipe. This application has when the foundation ditch setting is in the more soft land zone time of rainwater, can in time discharge the side slope with the water in the side slope, prevents that the earth structure of foundation ditch side slope from collapsing, very big improvement the stability of side slope to these earth and the little stone block of aquatic can be filtered, avoid earth and little stone block to get into the inside jam that causes of drain pipe, thereby guaranteed that drainage structures can be continuous with the effect of the water escape in the side slope.

Description

Environment-friendly foundation pit slope soil nailing wall structure

Technical Field

The application relates to the field of foundation pit supporting structures, especially, relate to an environmental protection foundation pit side slope soil nailing wall structure.

Background

The temporary pit shaft excavated for the building foundation is called a foundation pit. The foundation pit belongs to temporary engineering and has the function of providing a space so that the construction operation of the foundation can be carried out according to the designed specified position. In order to ensure the safety of the construction of the underground structure and the surrounding environment of the foundation pit, the measures of retaining, reinforcing and protecting the side wall of the foundation pit and the surrounding environment are called foundation pit supporting. Among them, the earth nailing wall foundation pit support is one of the most common and important types of foundation pit support.

The soil nailing wall is an in-situ soil body reinforcement technology. The slope of the foundation pit is reinforced by soil nails made of reinforcing steel bars, a reinforcing mesh is laid on the surface of the slope, and a concrete surface layer is sprayed on the surface of the slope, so that the slope reinforced type support construction method is combined with the soil slope. The construction is a complex formed by firmly bonding a reinforced rod piece (namely a soil nail or an anchor rod) arranged in a slope body with the surrounding soil body, and a supporting structure similar to a gravity retaining wall formed by surface layers. The soil nail is a reinforced soil nail formed by a Luoyang shovel, but loose or slightly dense sandy soil, slightly dense silt and filling soil of a hole easy to collapse or soft soil easy to shrink down are preferably driven steel pipe soil nails.

After long-time rainfall or external surface water seeps into the pit, a drainage structure needs to be arranged on the supporting surface layer, the existing soil nailing wall drainage structure is single in structure, and a large amount of silt in the side slope is mixed in the water discharged from the drainage structure. In view of the above-mentioned related art, the inventor believes that the water discharged from the existing soil nailing wall drainage structure carries a large amount of silt, which causes soil in the side slope to run off, resulting in loosening of the side slope structure.

SUMMERY OF THE UTILITY MODEL

In order to reduce the waste of steel resource, satisfy green's construction requirement, this application provides an environmental protection foundation ditch side slope soil nailing wall structure.

The application provides a pair of environmental protection foundation ditch slope soil nailing wall structure adopts following technical scheme:

the utility model provides an environmental protection foundation ditch side slope soil nailing wall structure, includes side slope, drainage structures set up in the side slope, drainage structures includes water service pipe, drain pipe, in the one end of water service pipe inserted the side slope, the other end of water service pipe exposes the lateral wall of side slope, the drain pipe is worn to locate in the water service pipe, a plurality of inlet openings have been seted up on the lateral wall of water service pipe, a plurality of drainage holes have been seted up on the lateral wall of drain pipe.

Through adopting above-mentioned technical scheme, when the foundation ditch setting is in the more soft land zone of rainwater, the water content of soil is very high in the foundation ditch side slope, and water in the side slope can flow in the water service pipe through the inlet opening of water service pipe, and the drainage pipe is got into to the drainage pore that flows through the drain pipe again, and the delivery port of drain pipe flows out on the final follow side slope lateral wall. Therefore, the drainage mechanism can discharge the water with high content in the foundation pit side slope soil in time, and prevent the soil structure of the foundation pit side slope from collapsing. Because the water that gets into from the inlet opening can wrap up in the partial earth and the little stone piece in the side slope simultaneously, through the drainage hole that sets up on the drain pipe, can filter these earth and the little stone piece of aquatic, avoid earth and little stone piece to get into the inside jam that causes of drain pipe to guaranteed that drainage structures can be continuous and discharge the water in the side slope.

Optionally, environmental protection foundation ditch slope soil nailing wall structure still include the concrete surface course, the concrete surface course set up in on the slope surface, the water service pipe is worn to locate in the concrete surface course.

By adopting the technical scheme, the concrete slurry has very strong fixing force after being solidified, the water service pipe can be firmly fixed in the side slope through the concrete surface layer, and the water service pipe is prevented from sliding in the side slope, so that the continuous operation of the drainage structure can be ensured.

Optionally, the water outlet of the drain pipe is connected with a water collecting pipe, and the water collecting pipe is arranged on the concrete surface layer below the water outlet of the drain pipe.

Through adopting above-mentioned technical scheme, can collect the delivery port discharged water of drain pipe through the collector pipe, avoid in the direct surface inflow foundation ditch of concrete surface course of just pouring of water in the drain pipe to produce destruction, make the operation area in the foundation ditch become muddy and cause the construction operation difficulty to the structure of concrete surface course. Consequently, can promote the drying effect of concrete surface course through the collector pipe, make the concrete surface course structure after the shaping more firm, also reduced the muddy degree of soil in the foundation ditch simultaneously, promoted the efficiency of construction.

Optionally, the water pipe and the drain pipe are both made of moso bamboo.

By adopting the technical scheme, the moso bamboo is a natural renewable resource with strong reproductive capacity, low price and short growth period. And the moso bamboo is hollow, has higher tensile strength and compressive strength, extremely strong bending resistance and stable short-term strength of the moso bamboo, so the moso bamboo can be used as a good drainage structure and a good supporting and retaining structure. The natural durability of the bamboo wood is more than 2 years, the bamboo wood is hollow and suitable for drainage, the moso bamboo is used as a drainage structure of a soil nailing wall supporting system, the safety use requirement of temporary foundation pit supporting can be completely met, a large amount of industrial pipeline materials are saved, the engineering cost is greatly reduced, more importantly, after the construction period of the foundation pit supporting is finished, the moso bamboo is gradually rotten, and the construction requirement of environmental protection is met.

Optionally, a water filtering sheet and a first limiting sheet for fixing the water filtering sheet are arranged in the water discharging pipe.

Through adopting above-mentioned technical scheme, through the drainage piece that sets up in the drain pipe, can filter the earth of the smaller size that the aquatic that the drainage hole got into carried, further promoted the filter effect of mao bamboo drain pipe. Through the fixed action of first spacing piece to the drainage piece, avoid the drainage piece to remove the upset in the drain pipe and lead to earth to flow out from the gap of drain pipe with the drainage piece to the filter effect of drainage piece has been guaranteed.

Optionally, a second limiting piece is further arranged in the water pipe, and a first limiting hole for fixing the water pipe is formed in the second limiting piece.

By adopting the technical scheme: the drain pipe that wears to establish in can radially fixing the water service pipe through the first spacing hole of seting up on the spacing piece of second, avoids rocking of drain pipe to drainage structures's damage to can prolong the life of drain pipe.

Optionally, a water hole is further formed in the second limiting piece.

Through adopting above-mentioned technical scheme, through the limbers of seting up on the spacing piece of second, moisture can circulate each other between the spacing piece of second in the water pipe, has greatly improved drainage structures's drainage efficiency.

Optionally, filtering sand is filled between the inner wall of the water pipe and the outer wall of the drain pipe.

Through adopting above-mentioned technical scheme, because the gap between the filtration grit is less, can prevent that most earth and small stone piece from getting into in the water pipe, prevent that earth and small stone piece from piling up in the water pipe and causing the jam, consequently can improve drainage structures's drainage efficiency.

Optionally, a second limiting hole is formed in the side wall of the water pipe, a third limiting hole is formed in the side wall of the drain pipe, the second limiting hole corresponds to the third limiting hole, and a limiting strip for fixing the drain pipe penetrates through the second limiting hole and the third limiting hole.

Through adopting above-mentioned technical scheme, through spacing hole of second, the spacing hole of third and spacing to the limiting displacement of drain pipe in the axial, can firmly fix the drain pipe in the water service pipe, prevent that the drain pipe from sliding in the water service pipe to drainage structures's destruction, can further prolong the life of drain pipe.

Optionally, a taper drill is arranged at one end of the water pipe inserted into the slope.

By adopting the technical scheme, due to the conical design of the drill bit, the contact area between the conical surface of the drill bit and soil in the side slope is smaller, larger pressure can be generated on the soil when the water service pipe is installed, and the soil on an installation path can be continuously extruded to the periphery of the water service pipe in the installation process, so that the resistance of the water service pipe in the installation process can be reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the side slope of the foundation pit can be firmly fixed and the moisture in the side slope can be timely discharged out of the side slope through the concrete surface layer and the drainage structure of the soil nailing wall of the side slope of the environment-friendly foundation pit, so that the stability of the side slope is greatly improved;

2. silt and small stones in the side slope can be filtered through the sand filtering holes and the water filtering holes, and the filtering and water discharging effects of the water discharging structure are greatly improved;

3. can collect the processing with drain pipe exhaust water through the collector pipe, avoid the direct concrete surface layer surface of discharging of water in the drain pipe to the stable structure on slope concrete surface layer has been protected.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present application;

FIG. 2 is a sectional view of the fixing structure of the present embodiment;

FIG. 3 is a schematic structural view of the reinforcing bar of the present embodiment;

FIG. 4 is a schematic structural view of a drainage structure of the present embodiment;

FIG. 5 is an enlarged partial view of the embodiment at A in FIG. 4;

fig. 6 is a partially enlarged schematic view of the embodiment at B in fig. 4.

Description of reference numerals: 1. side slope; 2. a fixed structure; 21. driving steel pipe soil nails; 22. a concrete layer; 23. a reinforcing mesh; 24. reinforcing steel bars; 25. a concrete facing; 3. a drainage structure; 31. a water pipe; 311. a water inlet hole; 312. a second limiting hole; 32. a drain pipe; 321. water filtering holes; 322. a third limiting hole; 33. a water collection pipe; 34. a water filtration sheet; 35. a first limiting sheet; 36. a second limiting sheet; 361. a first limit hole; 362. a water through hole; 37. a limiting strip; 38. a cone drill bit.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses environmental protection foundation ditch slope soil nailing wall structure. Referring to fig. 1, the environmental protection foundation pit side slope soil nailing wall structure comprises a side slope 1, a fixing structure 2 and a drainage structure 3. Fixed knot constructs 2 and drainage structures 3 all sets up on side slope 1.

Referring to fig. 2 and 3, the fixed structure 2 includes driven-in steel pipe soil nails 21, a concrete layer 22, a reinforcing mesh 23, reinforcing bars 24, and a concrete cover 25. One end of the driving-in type steel pipe soil nail 21 is arranged in the side slope 1, the periphery of the driving-in type steel pipe soil nail 21 is coated with a concrete layer 22, the other end of the driving-in type steel pipe soil nail 21 leaks out of the slope surface and is welded with reinforcing steel bars 24, a reinforcing mesh 23 is welded on the reinforcing steel bars 24, and the periphery of the reinforcing mesh 23 is coated with a concrete surface layer 25.

Loose or slightly dense sandy soil, slightly dense silt and filling soil of the easy-to-collapse hole or soft soil easy to shrink down are difficult to form a stable grouting cavity structure required by common soil nails, so that a driving type steel pipe soil nail 21 is suitable for fixing the foundation pit side slope 1 in the soft soil foundation pit with more rainwater. The driving-in type steel pipe soil nail 21 can be driven into soft soil with a loose structure of the side slope 1 through external impact, concrete is poured around the driving-in type steel pipe soil nail 21 through the driving-in type steel pipe soil nail 21 to form a concrete layer 22, the driving-in type steel pipe soil nail 21 and the concrete layer 22 are used as a supporting structure of the side slope 1 of the foundation pit, reinforcing steel bars 24 welded at one end of the driving-in type steel pipe soil nail 21 exposed out of the slope surface can fix the driving-in type steel pipe soil nail 21 on the slope surface of the foundation pit, and concrete is poured through a reinforcing mesh 23 arranged on the reinforcing steel bars 24 to form a smooth concrete surface layer 25 to further fix the driving-in type steel pipe soil nail 21. Thereby achieving the function of fixing the side slope 1 in the soft soil foundation pit.

Referring to fig. 4, 5 and 6, the drain structure 3 includes a water passage pipe 31, a drain pipe 32 and a header pipe 33. One end of the water service pipe 31 penetrates through the concrete surface layer 25 and is inserted into the side slope 1, one end of the water service pipe 31 inserted into the side slope is provided with the conical drill 38, the other end of the water service pipe 31 is exposed out of the side wall of the side slope 1, the drain pipe 32 penetrates through the water service pipe 31, the side wall of the water service pipe 31 is provided with a plurality of water inlet holes 311, and the side wall of the drain pipe 32 is provided with a plurality of water filtering holes 321. The water outlet of the water outlet pipe 32 is connected with a water collecting pipe 33, and the water collecting pipe 33 is arranged on the concrete surface layer 25 below the water outlet of the water outlet pipe 32.

When the foundation ditch sets up in the more soft soil area of rainwater, the water content of soil in the foundation ditch side slope 1 is very high, because there is very strong stationary force after the concrete thick liquid solidifies, can firmly fix water service pipe 31 in side slope 1 through concrete surface course 25, has avoided the slip of water service pipe 31 in side slope 1 to can guarantee drainage structures 3's continuous function. Due to the conical design of the drill bit, the contact area between the conical surface of the drill bit and the soil in the side slope 1 is small, large pressure can be generated on the soil when the water service pipe 31 is installed, the soil on an installation path can be continuously extruded to the periphery of the water service pipe 31 in the installation process, and therefore resistance of the water service pipe 31 in the installation process can be reduced.

The water in the slope 1 can flow into the water pipe 31 through the water inlet hole 311 of the water pipe 31, then flow into the drain pipe 32 through the water filtering holes 321 of the drain pipe 32, and finally flow out from the water outlet of the drain pipe 32 on the side wall of the slope 1. Drainage mechanism can in time discharge the very high moisture of content in 1 soil on foundation ditch side slope, prevents that the earth structure on foundation ditch side slope 1 from collapsing. Because the water that gets into from inlet opening 311 can wrap up in some earth and the little stone in the side slope 1 simultaneously, through the drainage hole 321 that sets up on the drain pipe 32, can filter these earth and the little stone in the aquatic, avoid earth and little stone to get into that drain pipe 32 is inside to cause the jam to guaranteed that drainage structures 3 can be continuous and discharge the water in the side slope 1.

The water discharged from the water outlet of the water discharge pipe 32 can be collected by the water collection pipe 33, and the problem that the water in the water discharge pipe 32 directly flows into the foundation pit from the surface of the concrete surface layer 25 which has just been cast is avoided, so that the structure of the concrete surface layer 25 is damaged, and the working area in the foundation pit is muddy, and the construction work is difficult. The collector pipe 33 can promote the drying effect of concrete surface course 25, makes the concrete surface course 25 structure after the shaping more firm, has also reduced the muddy degree of soil in the foundation ditch simultaneously, has promoted the efficiency of construction.

A water filter 34 and a first stopper 35 for fixing the water filter 34 are provided in the drain pipe 32. The water pipe 31 is provided with a second stopper 36 therein, and the second stopper 36 is provided with a first stopper hole 361 for fixing the drain pipe 32. The second position-limiting piece 36 is further provided with a water through hole 362. The filtering sand is filled between the inner wall of the water pipe 31 and the outer wall of the water discharge pipe 32. In this embodiment, the moso bamboo has a unique bamboo joint structure, and the processed bamboo joint can be used as the water filtering sheet 34, the first limiting sheet 35 and the second limiting sheet 36 in this embodiment.

The water filter 34 can filter the soil entering the water pipe 31 through the water filter hole 321, and further improves the filtering effect of the moso bamboo drain pipe 32. Through the fixed action of first spacing piece 35 to water filter 34, avoid water filter 34 to remove the upset in drain pipe 32 and lead to earth to flow out from the gap of drain pipe 32 with water filter 34 to the filter effect of water filter 34 has been guaranteed.

The drain pipe 32 penetrating through the water pipe 31 can be fixed in the radial direction through the first limiting hole 361 formed in the second limiting piece 36, so that the damage of the drain pipe 32 to the drain structure 3 due to the shaking is avoided, and the service life of the drain pipe 32 can be prolonged. The water passage holes 362 formed in the second stopper pieces 36 allow water to flow between the second stopper pieces 36 in the water passage pipe 31, thereby greatly improving the water filtration efficiency of the drain structure 3. Because the gaps among the filtering gravels are small, most of soil and small stones can be prevented from entering the water service pipe 31, and the soil and small stones are prevented from being accumulated in the water service pipe 31 to cause blockage, so that the drainage efficiency of the drainage structure 3 can be improved.

The lateral wall of the water service pipe 31 is provided with a plurality of second limiting holes 312, the lateral wall of the drain pipe 32 is provided with a plurality of third limiting holes 322, the second limiting holes 312 and the third limiting holes 322 correspond to each other one by one, and limiting strips 37 for fixing the drain pipe 32 penetrate through the second limiting holes 312 and the third limiting holes 322. The second stopper hole 312, the third stopper hole 322, and the stopper 37 can axially stopper the drain pipe 32, thereby firmly fixing the drain pipe 32 in the water pipe 31. The water pipe 31 is inserted and fixed on the concrete surface layer 25 to prevent the water pipe 31 from sliding relative to the slope 1 to cause the drainage structure 3 to lose efficacy.

The implementation principle of this application embodiment an environmental protection foundation ditch slope soil nailing wall structure does: the water pipe 31 can be driven into soft soil more easily by the tapered design of the water pipe 31.

The water in the soft soil in the slope 1 enters the water pipe 31 through the water inlet 311 of the water pipe 31, and a part of the water flows through the filtering sand between the water pipe 31 and the water discharge pipe 32 and then flows into the water discharge pipe 32 through the water filtering hole 321 of the water discharge pipe 32. The other part of the water flow entering the water pipe 31 passes through the sand filter and the water through hole 362 of the second stopper 36, and then flows into the drain pipe 32 through the filtered water hole 321. The water flowing into the drain pipe 32 from the drainage hole 321 is further filtered by the drainage sheet 34, and finally flows into the water collecting pipe 33 from the outlet of the drain pipe 32.

The filtering sand blocks most of the soil and small stones outside the water pipe 31, and the water filtering holes 321 can block the soil and small stones which are not filtered by the filtering sand outside the water discharging pipe 32. The strainer 34 may further filter the soil entering the drain 32.

The drain pipe 32 can be limited by the first limit hole 361, the second limit hole 312, the third limit hole 322 and the limit bar 37, and the drain pipe 32 is prevented from shaking, so that the drain pipe 32 is firmly fixed in the water pipe 31. The water pipe 31 is inserted and fixed to the concrete surface layer 25 to prevent the water pipe 31 from sliding relative to the slope 1.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides an environmental protection foundation ditch slope soil nailing wall structure which characterized in that: including side slope (1), drainage structures (3) set up in side slope (1), drainage structures (3) include water service pipe (31), drain pipe (32), in side slope (1) was inserted to the one end of water service pipe (31), the other end of water service pipe (31) exposes the lateral wall of side slope (1), drain pipe (32) wear to locate in water service pipe (31), a plurality of inlet openings (311) have been seted up on the lateral wall of water service pipe (31), a plurality of drainage holes (321) have been seted up on the lateral wall of drain pipe (32).

2. The environment-friendly foundation pit slope soil nailing wall structure according to claim 1, wherein: still include concrete surface course (25), concrete surface course (25) set up in on slope (1) surface, water service pipe (31) wear to locate in concrete surface course (25).

3. The environment-friendly foundation pit slope soil nailing wall structure according to claim 2, wherein: the water outlet of the water discharging pipe (32) is connected with a water collecting pipe (33), and the water collecting pipe (33) is arranged on the concrete surface layer (25) below the water outlet of the water discharging pipe (32).

4. The environment-friendly foundation pit slope soil nailing wall structure according to claim 1, wherein: the water pipe (31) and the drain pipe (32) are both made of moso bamboos.

5. The environment-friendly foundation pit slope soil nailing wall structure according to claim 4, wherein: and a water filtering sheet (34) and a first limiting sheet (35) for fixing the water filtering sheet (34) are arranged in the water discharging pipe (32).

6. The environment-friendly foundation pit slope soil nailing wall structure according to claim 4, wherein: a second limiting piece (36) is further arranged in the water pipe (31), and a first limiting hole (361) used for fixing the drain pipe (32) is formed in the second limiting piece (36).

7. The environment-friendly foundation pit slope soil nailing wall structure according to claim 6, wherein: the second limiting sheet (36) is also provided with a water through hole (362).

8. The environment-friendly foundation pit slope soil nailing wall structure according to claim 7, wherein: and filtering sand is filled between the inner wall of the water pipe (31) and the outer wall of the drain pipe (32).

9. The environment-friendly foundation pit slope soil nailing wall structure according to claim 1, wherein: the side wall of the water service pipe (31) is provided with a second limiting hole (312), the side wall of the drain pipe (32) is provided with a third limiting hole (322), the second limiting hole (312) corresponds to the third limiting hole (322), and a limiting strip (37) for fixing the drain pipe (32) penetrates through the second limiting hole (312) and the third limiting hole (322).

10. The environment-friendly foundation pit slope soil nailing wall structure according to claim 1, wherein: one end of the water pipe (31) inserted into the side slope (1) is provided with a conical drill bit (38).

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