CN219671371U

CN219671371U - Composite soil nailing wall with inclined piles

Info

Publication number: CN219671371U
Application number: CN202320971548.5U
Authority: CN
Inventors: 康剑伟; 张家金; 林肇春; 田其煌; 程庭
Original assignee: Fuzhou Survey Institute Co ltd
Current assignee: Fuzhou Survey Institute Co ltd
Priority date: 2023-04-26
Filing date: 2023-04-26
Publication date: 2023-09-12
Anticipated expiration: 2033-04-26

Abstract

The utility model provides a composite soil nailing wall with inclined piles, which comprises a plurality of first steel pipes, second steel pipes, soil nails, a limited soil body and a foundation pit; according to the utility model, the fixed holes are drilled from top to bottom along the slope and the limited soil body, wherein the fixed holes are respectively along the slope direction and the vertical horizontal plane, the first steel pipe is placed in the fixed holes along the slope direction, the second steel pipe is placed in the fixed holes of the vertical horizontal plane, concrete is poured in a gap between the fixed holes and the first steel pipe, and then the connecting plate is connected with the second steel pipe to form a triangular support structure, so that the soil of the slope and the soil body in the slope are solidified, advanced support can be realized for adjacent buildings, and collapse caused by inclined water and soil loss is prevented; the connecting plate is formed by pouring concrete, external force cannot be easily damaged, the integrity of the first steel pipe and the second steel pipe is stronger, and further, the first steel pipe and the second steel pipe extend to the bottom of the foundation pit.

Description

Composite soil nailing wall with inclined piles

Technical Field

The utility model relates to a composite soil nailing wall with inclined piles, and belongs to the technical field of foundation pit supporting engineering.

Background

In foundation pit supporting engineering, when the foundation pit is supported closely to the existing building, as the foundation pit slope is closely adjacent to the existing building, limited soil exists between the foundation pit slope and the existing building, the supporting width is limited, and the foundation pit engineering is nearer to the red line, and the soil nails or anchor rods are strictly forbidden to surpass the red line, so that the safety and stability of the foundation pit slope cannot be ensured according to the conventional soil nails or anchor rod supporting scheme. In this case, a double-row pile scheme, a large-angle anchor pile scheme or an internal support scheme is often adopted for supporting the foundation pit.

The prior patent number is 202222055553.X; the patent name is a patent application document of 'a compound soil nail and fixed pile cooperation support limited soil body' mentions that adopts and obtains great level pulling resistance through the soil nail with the help of the fixed pile, and the factor of safety of side slope obtains very big improvement, and the whole safety of limited soil body side slope can be effectively guaranteed, and soil nail, fixed pile and surface course constitute a stable frame construction jointly, for the whole stability and the safety of limited soil body provide the assurance, and only use soil nail and not co-altitude fixed pile can support, easy and simple to handle, construction speed is fast, construction cost is low, restricted by construction environmental condition.

In the foundation pit supporting method, the problems are solved that the composite soil nails and the fixed piles are matched to support the limited soil body file in the step 3, the fixed piles are definitely and timely positioned in the soil, the soil nails need to be accurately inserted and fixed to the fixed piles to achieve connection, whether the fixed piles are punched first and then irrigated or are irrigated directly, the operation difficulty is high, the time consumption is long, the fixed piles are in parallel with each other, the casting is carried out from top to bottom, and box culverts are arranged above the side slopes, and the method cannot be adopted for supporting at all, so that the composite soil nail wall with the inclined piles and simple operation is developed.

Disclosure of Invention

Therefore, the utility model aims to provide the composite soil nailing wall with the inclined piles, which is convenient to move, adjust the height and is anti-skid.

The utility model is realized in the following way:

a composite soil nailing wall with inclined piles comprises a plurality of first steel pipes, second steel pipes, soil nails, limited soil bodies and foundation pits; the foundation pit is opened on limited soil body, forms a slope on the side of limited soil body, the first steel pipe is arranged along the slope, the second steel pipe vertically penetrates through the top of the slope from top to bottom, and a plurality of soil nails are inserted from the slope to the direction of the second steel pipe.

As a further improvement, the first steel pipe is arranged obliquely along the slope surface.

As a further improvement, the tops of the first steel pipe and the second steel pipe are connected through a connecting plate.

As a further improvement, the soil nails are disposed between two adjacent first steel pipes and are not connected with the second steel pipes.

As a further improvement, the pile spacing L between two adjacent first steel pipes is 0.5-3 meters.

As a further improvement, the soil nail comprises a reinforcing bar and a soil nail slurry surrounding the reinforcing bar.

As a further improvement, the included angle A between the soil nail and the horizontal line is 20-30 DEG

The beneficial effects of the utility model are as follows: according to the utility model, the fixed holes are drilled from top to bottom along the slope and the limited soil body, wherein the fixed holes are respectively along the slope and the vertical horizontal plane, the first steel pipe is arranged in the fixed hole of the slope, the second steel pipe is arranged in the fixed hole of the vertical horizontal plane, concrete is poured in a gap between the fixed hole and the first steel pipe, and then the connecting plate is connected with the second steel pipe to form a triangular support structure, so that the soil of the slope is solidified, advanced support can be realized for adjacent buildings, and collapse caused by inclined water and soil loss is prevented; the connecting plate is formed by pouring concrete, external force cannot be easily damaged, the integrity of the first steel pipe and the second steel pipe is stronger, and further, the first steel pipe and the second steel pipe extend to the bottom of the foundation pit.

The soil nails are arranged between two adjacent first steel pipes, are not connected with the second steel pipes, are matched with the triangular support structures formed by the first steel pipes and the second steel pipes, stabilize the side surfaces of limited soil bodies, are distributed between the first steel pipes, are not accurately inserted and fixed with the fixed piles to realize connection, have the problems of high operation difficulty and long time consumption no matter whether punching is performed before irrigation or directly irrigation is performed, and are high in construction efficiency and short in time consumption no matter what way the soil nails are formed by pouring.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a composite soil nailing wall with inclined piles according to an embodiment of the present utility model.

Fig. 2 is a schematic view of a soil nailing structure of a composite soil nailing wall with inclined piles according to an embodiment of the present utility model.

Fig. 3 is a schematic plan view of a slope of a composite soil nailing wall with inclined piles according to an embodiment of the present utility model.

Fig. 4 is a schematic structural view of a composite soil nailing wall with inclined piles according to the embodiment of the present utility model under the condition of box culvert.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

In the description of the present utility model, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1-4, the present embodiment provides a concrete embodiment about a composite soil nailing wall with inclined piles, which comprises a plurality of first steel pipes 10, second steel pipes 20, soil nails 30, a limited soil body 40 and a foundation pit 50;

the foundation pit 50 is opened on the limited soil body 40, a slope is formed on the side surface of the limited soil body 40, the first steel pipe 10 is arranged along the slope, the second steel pipe 20 vertically penetrates through the top of the slope from top to bottom, and a plurality of soil nails 30 are inserted from the slope to the direction of the second steel pipe 20.

Further, the tops of the first steel pipe 10 and the second steel pipe 20 are connected by the connecting plate 60, so that the connection stability of the first steel pipe 10 and the second steel pipe 20 is ensured, a triangular support structure is formed on the side surface of the limited soil body 40, and the soil on the slope and the soil in the slope are solidified, so that the collapse caused by the inclined water and soil loss is prevented.

Further, soil nails 30 are arranged between two adjacent first steel pipes 10 and are not connected with the second steel pipes 20, the triangular support structure formed by the first steel pipes 10 and the second steel pipes 20 is matched, the side face of a limited soil body 40 is stabilized, the soil nails 30 are distributed between the first steel pipes 10, accurate insertion and fixation of fixed piles to achieve connection are not needed, the problems that operation difficulty is high, time is long and the soil nails 30 are formed by pouring in any mode are all solved, construction efficiency is high, and time consumption is short.

As a possible specific embodiment of the present utility model, preferably, the pile spacing L between two adjacent first steel pipes 10 is 0.5-3 meters, the distance is moderate, and the pile spacing L between two adjacent first steel pipes 10 is 1.5 meters, the distance is optimal, and then a reinforcing mesh 80 is paved to connect the first steel pipes 10 and the soil nails 30, so as to realize comprehensive protection, and further ensure that the slope does not slide.

As a possible embodiment of the present utility model, it is preferable that the first steel pipe 10 is parallel to the slope surface, and the first steel pipe 10 is inclined to solidify soil on the slope surface after being arranged parallel to the slope surface no matter how much the horizontal angle B between the slope surface and the bottom surface of the foundation pit 50 is.

As a possible specific embodiment of the present utility model, preferably, the soil nail 30 comprises a steel bar 301 and a soil nail slurry 302 wrapping the steel bar 301, the steel bar 301 is used as a framework, the soil nail slurry 302 is completely wrapped and supported, and compared with the existing soil nail 30 formed by casting concrete, the soil nail 30 has strong supporting force, and can stabilize the soil on the side surface of the limited soil body 40 and prevent collapse.

As a possible specific embodiment of the utility model, preferably, the included angle A between the soil nail 30 and the horizontal line is 20-30 degrees, after the soil nail 30 is obliquely arranged, after piling holes and placing the reinforcing steel bars 301, concrete is convenient to flow in from the pile holes during pouring, the construction efficiency is higher, and the time is shorter.

In one specific embodiment, the included angle A between the soil nail 30 and the horizontal line is 27 degrees, so that the concrete is more convenient to pour, and the efficiency is higher.

As a possible specific embodiment of the present utility model, preferably, if the box culvert 70 is disposed in the limited soil body 40 corresponding to the top of the slope, the top of the slope does not need to be embedded with the soil nails 30, so that the side surface of the limited soil body 40 can be ensured not to collapse, and the limited soil body 40 can also be supported, so that the practicability is higher.

The steps which are one possible implementation of the utility model are as follows:

s1, firstly, excavating a foundation pit 50 on the limited soil body 40, so that the side surface of the limited soil body 40 forms a slope, wherein a basement can be arranged in the foundation pit, and the foundation pit can be used for other purposes without any limitation.

S2, drilling fixing holes from top to bottom along the slope and the limited soil body 40 at selected positions, wherein the fixing holes are respectively along the slope and the vertical horizontal plane, a first steel pipe is arranged in the fixing holes along the slope, a second steel pipe is arranged in the fixing holes of the vertical horizontal plane, concrete is poured in a gap between the fixing holes and the first steel pipe, then the connecting plate 60 is connected with the second steel pipe, so that a triangular supporting structure is formed, soil of the slope and the soil body in the slope are solidified, advanced support can be realized for adjacent buildings, and collapse caused by inclined water and soil loss is prevented; the connecting plate 60 is formed by casting concrete, so that external force cannot be easily damaged, the integrity of the first steel pipe and the second steel pipe is stronger, and further, the first steel pipe 10 and the second steel pipe 20 extend to the bottom of the foundation pit 50.

S2, then after piling holes and placing reinforcing ribs 301 on two adjacent first steel pipes 10, in order to facilitate cement slurry to flow in from a drilling position during pouring, the included angle A between the soil nails 30 and a horizontal line is 20-30 degrees, the construction efficiency is higher, and the time is shorter.

S3, the pile distance L between two adjacent first steel pipes 10 is 0.5-3 m, and then a reinforcing mesh 80 is paved to connect the first steel pipes 10 and the soil nails 30, so that comprehensive protection is realized, and the slope is further ensured not to slide.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The composite soil nailing wall with the inclined piles is characterized by comprising a plurality of first steel pipes (10), second steel pipes (20), soil nails (30), a limited soil body (40) and a foundation pit (50);

the foundation pit (50) is arranged on a limited soil body (40), a slope is formed on the side face of the limited soil body (40), the first steel pipe (10) is arranged along the slope, the second steel pipe (20) vertically penetrates through the top of the slope from top to bottom, and a plurality of soil nails (30) are inserted from the slope to the direction of the second steel pipe (20).

2. The composite soil nailing wall with inclined piles of claim 1 wherein the first steel pipe (10) is arranged along a slope and the tops of the first steel pipe (10) and the second steel pipe (20) are connected by a connecting plate (60).

3. Composite soil nailing wall with inclined peg of claim 2 characterized in that the soil nailing (30) is arranged between two adjacent first steel pipes (10) and not connected with the second steel pipes (20).

4. A composite soil nailing wall with inclined piles according to claim 3, characterized in that the pile spacing L between adjacent two first steel pipes (10) is 0.5-3 meters.

5. Composite soil nailing wall with inclined peg of claim 1, characterized in that the soil nails (30) comprise reinforcing bars (301) and soil nail slurry (302) surrounding the reinforcing bars (301).

6. Composite soil nailing wall with inclined peg of claim 5 characterized in that the angle a of the soil nailing (30) to the horizontal is 20 ° -30 °.