CN220184079U - A kind of prefabricated pile slab concrete retaining wall - Google Patents

Abstract

The utility model relates to an assembled pile plate concrete retaining wall which comprises a plurality of precast concrete piles, precast concrete plates and prestressed anchor cables, wherein one ends of the precast concrete piles are inserted into soil bodies of side slopes, mounting grooves are formed in the side walls of the precast concrete piles, two ends of each precast concrete plate are respectively inserted into the mounting grooves of two adjacent precast concrete piles, a reserved prestressed anchor cable duct is formed in each precast concrete pile, and each prestressed anchor cable penetrates through each prestressed anchor cable duct to be fixedly connected with the outside. The fabricated concrete retaining wall provided by the utility model can reduce foundation excavation, reduce artificial risk, reduce construction cost, shorten construction period, improve construction quality and reduce field wet operation, thereby being beneficial to environmental protection.

Description

A kind of prefabricated pile slab concrete retaining wall

Technical field

The present application relates to the technical field of municipal facilities, and in particular to a prefabricated pile slab concrete retaining wall.

Background technique

Slope refers to any geological body on the surface of the earth that has an inclined surface. It is a landform landscape widely distributed on the earth's surface. The transformation of natural slopes and artificial slopes to meet engineering needs is called slope engineering.

At present, the slope management structures include: gravity retaining wall, which uses the retaining wall's own gravity to maintain the stability of the retaining wall under the action of earth pressure, and is generally made into a simple trapezoid; buttress retaining wall, a lightweight Retaining wall, a retaining wall that connects the vertical wall with the heel board by adding buttresses at certain intervals along the vertical wall of the cantilevered retaining wall; reinforced earth retaining wall, which is composed of fill soil, tie tape and veneer A retaining wall made of reinforced soil made of blocks to withstand the lateral pressure of the soil. The reinforced soil retaining wall adds tie bars to the soil and uses the friction between the tie bars and the soil to improve the deformation conditions of the soil and improve the performance of the soil. The engineering characteristics of the soil are used to achieve the purpose of stabilizing the soil; the prestressed anchor cable frame structure reinforces the landslide body. As an active reinforcement method, it can mobilize the self-stabilizing ability of the slope body and change the slope's stability. Stress conditions, safe and stable; steel pipe piles, a kind of small-diameter bored piles, are generally arranged in groups, have fast construction speed, and are suitable for emergency rescue. Slope diseases are mainly controlled by slope deformation; composite anchor piles, which Similar piles are composed of steel bars and cement slurry, similar to vertical anchors, hence the name anchor piles. This pile is suitable for isolation function. Rows of piles can be used to form a two-row or four-row combined consolidated structure to achieve the purpose of slope management.

Regarding the above-mentioned related technologies, the inventor believes that there are the following defects: the construction of traditional retaining walls is easy to disturb the slope soil and cause some soil to slide; the construction of traditional retaining walls involves a lot of wet work and causes great damage to the environment; traditional retaining walls The wall requires a lot of manual work, and the labor risks and costs are high.

Utility model content

In view of the technical problems in the above background technology, this application proposes a prefabricated pile slab concrete retaining wall, which adopts the following technical solution:

In the first aspect, this application proposes a prefabricated pile slab concrete retaining wall, which includes a number of precast concrete piles, precast concrete slabs and prestressed anchor cables. One end of the precast concrete pile is inserted into the soil of the slope, and the The side walls of the precast concrete piles are provided with installation slots, and the two ends of the precast concrete slab are inserted into the installation slots of two adjacent precast concrete piles. The precast concrete piles are provided with reserved prestressed anchor cable channels. , the prestressed anchor cable passes through the prestressed anchor cable channel and is fixedly connected to the outside.

By adopting the above technical solution, compared with the cast-in-situ concrete wall structure, the assembled pile slab concrete retaining wall of this application can realize industrial production in the factory and shorten the construction period;

To ensure product quality, material input is relatively reduced; standardized production can save materials and reduce waste; the product is highly mechanized, which can reduce labor costs and risks, and reducing on-site operations is beneficial to environmental protection.

Preferably, the precast concrete piles include a lower precast concrete pile and an upper precast concrete pile. The lower precast concrete pile is inserted into the soil of the slope, and the installation groove is provided on the upper precast concrete pile.

Preferably, the precast concrete piles further include a first connecting structure for connecting the lower section of precast concrete piles and the upper section of precast concrete piles. The first connecting structure includes round steel, and the lower section of precast concrete piles and the upper section of precast concrete piles are Precast concrete piles are provided with reserved holes at the pile ends, and the round steel is inserted into the reserved holes at the pile ends.

Preferably, the precast concrete slab is provided with drainage holes.

Preferably, the lower end of the precast concrete panel is provided with a protrusion, and the upper end of the precast concrete panel is provided with a groove for the protrusion to be inserted.

Preferably, the precast concrete piles are provided with a plurality of upper section precast concrete piles, and the precast concrete piles further include a second connection structure for connecting the lower section precast concrete piles and the upper section precast concrete piles.

Preferably, the second connection structure includes round steel, and the round steel is inserted into the reserved hole at the pile end on the upper precast concrete pile.

Preferably, the second connection structure further includes a grouting layer connected between the two upper sections of precast concrete piles.

Preferably, the second connection structure also includes a pre-embedded steel plate and a welded steel plate. The pre-embedded steel plate is fixedly arranged at the end of the lower precast concrete pile. The welded steel plate is simultaneously connected with the welded steel plates of the two upper precast concrete piles. Fixed connection.

Preferably, the rectangular cross-section of the lower section of the precast concrete pile is 700mm×700mm, and the section of the lower section of the precast concrete pile starts at 900mm at the bottom of the pile and gradually decreases to a section of 100mm×100mm at the bottom of the column.

To sum up, this application includes at least one of the following beneficial technical effects:

1. Compared with the cast-in-place concrete wall structure, the prefabricated pile slab concrete retaining wall of this application can achieve industrialized production in the factory, shorten the construction period; ensure product quality, and reduce material input; standardized production can save materials, reducing waste; the product is highly mechanized, which can reduce labor costs and risks, and reducing the amount of on-site operations is beneficial to environmental protection;

2. The prefabricated pile slab concrete retaining wall not only has the advantages of prefabricated structure, but also can be suitable for road shoulder walls or river management in mountainous areas. It does not require a large amount of foundation excavation and reduces the cost;

3. Prefabricated concrete retaining walls can reduce foundation excavation, reduce manual risks, reduce construction costs in mountainous slope projects and river management, shorten the construction period, improve construction quality, and reduce on-site wet work, which is beneficial to environmental protection.

Description of drawings

The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments and together with the description serve to explain the principles of the application. Other embodiments and many of the intended advantages of embodiments will be readily recognized as they become better understood by reference to the following detailed description. Elements of the drawings are not necessarily to scale with each other. Like reference numerals refer to corresponding similar parts.

Figure 1 is a schematic cross-sectional structural diagram of a prefabricated pile slab concrete retaining wall according to an embodiment of the present application.

Figure 2 is a side view, a top view cross-sectional view and a side cross-sectional view of the precast concrete lower section pile.

Figure 3 is a side sectional view and a top sectional view of the precast concrete upper section pile.

Figure 4 is a schematic three-dimensional structural diagram of a precast concrete panel.

Figure 5 is a schematic diagram of the pile connection between the lower section of precast concrete piles and the upper section of precast concrete piles.

Figure 6 is a schematic diagram of the pile connection of the two upper sections of precast concrete piles.

Explanation of reference signs: 1. Precast concrete piles; 2. Precast concrete slabs; 3. Prestressed anchor cables; 4. Slope soil; 11. Lower section precast concrete piles; 12. Upper section precast concrete piles; 122. Precast concrete piles. Stress anchor cable channel; 123, embedded steel plate; 124, welded steel plate; 125, installation groove; 13, round steel; 14, reserved holes at pile end; 15, grouting layer; 23, groove; 24, protrusion; 25. Drainage holes.

Detailed ways

The present application will be further described in detail below in conjunction with the accompanying drawings and examples. It can be understood that the specific embodiments described here are only used to explain the relevant invention, but not to limit the invention. It should also be noted that, for convenience of description, only the parts related to the invention are shown in the drawings.

It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

Referring to Figure 1 , the embodiment of the present application discloses a prefabricated pile slab concrete retaining wall, which includes a number of precast concrete piles 1 , precast concrete panels 2 and prestressed anchor cables 3 .

Referring to Figures 2 and 3, in a specific embodiment, the precast concrete pile 1 includes a lower section of precast concrete pile 11 and an upper section of precast concrete pile 12. The lower section of precast concrete pile 11 is inserted into the slope soil 4, and the precast concrete slab 2 is installed on the precast concrete pile 12 of the upper section.

In a specific embodiment, the lower section of the precast concrete pile 11 has a rectangular plan section of 700 mm × 700 mm. The cross section starts at 900 mm at the bottom of the pile and gradually decreases to a cross section of 100 mm × 100 mm at the bottom of the column. In a specific embodiment, the upper section of the precast concrete pile 12 has an I-shaped cross-section, with an upper flange width of 700mm and a thickness of 150mm, a lower flange width of 700mm and a thickness of 340mm, and a web width of 400mm. An anchor cable hole is reserved at each distance of the pile body.

Referring to Figure 5, in a specific embodiment, the precast concrete pile 1 also includes a first connection structure for connecting the lower section of precast concrete piles 11 and the upper section of precast concrete piles 12. The first connection structure includes round steel 13, and the lower section of precast concrete piles 12. The precast concrete pile 11 and the upper precast concrete pile 12 are both provided with reserved holes 14 at the pile ends, and the round steel 13 is inserted into the reserved holes 14 at the pile ends.

During the implementation of the prefabricated concrete pile plate retaining wall, firstly, the lower precast concrete pile 11 is penetrated into the soil to the designed depth, and then the upper precast concrete pile 12 is connected to the lower precast concrete pile 11 near 1 meter below the ground elevation. pile. The pile is subjected to a large vertical force and a small bending moment at this position, so the two ends of the round steel 13 are inserted into the reserved holes at the upper end of the lower precast concrete pile 11 and the reserved holes at the lower end of the upper precast concrete pile 12 to complete the pile connection. .

In a specific embodiment, the precast concrete pile 1 is provided with reserved prestressed anchor cable 3 holes for the prestressed anchor cable 3 to pass through the prestressed anchor cable 3 holes for fixed connection with the outside. The prestressed anchor cable 3 anchors the upper concrete precast pile to the hard rock layer through the anchor cable channel of the upper concrete precast pile. After all the piles are constructed to the designed position, insert the two sides of the precast concrete slab 2 into the recesses on both sides of the upper section of the concrete precast piles to fit them.

In a specific embodiment, a mounting slot 125 is provided on the side wall of the upper section of the precast concrete pile, and both ends of the precast concrete plate 2 are respectively inserted into the mounting slots 125 of two adjacent precast concrete piles 1 .

Referring to FIG. 4 , in a specific embodiment, the lower end of the precast concrete panel 2 is provided with a protrusion 24 , and the upper end of the precast concrete panel 2 is provided with a groove 23 for the protrusion 24 to be inserted. The upper and lower precast panels between the precast concrete piles 1 are joined by first inserting into the recess of the precast concrete panel 2 to match the protrusion of the precast concrete panel 2 that needs to be joined. In this way, the precast concrete piles 1, the precast concrete slabs 2 and the prestressed anchor cables 3 form an integral new assembled concrete pile plate retaining wall to resist the lateral pressure of the soil and ensure the stability of the slope.

In a specific embodiment, the precast concrete panel 2 is provided with drainage holes 25 . The precast concrete slab 2 is 200mm thick and 1m wide. During construction, both sides are inserted into the I-shaped cross-section recesses of the upper piles to fit with the upper piles. 2 recesses in one precast concrete panel fit into the bulges of another concrete panel, connecting the two panels together. In order to drain the water in the soil in time, holes are reserved inside the precast concrete panel 2 .

Referring to Figure 6, in a specific embodiment, the precast concrete pile 1 is provided with a plurality of upper section precast concrete piles 12. The precast concrete pile 1 also includes a third section for connecting the lower section precast concrete piles 11 and the upper section precast concrete piles 12. Two connection structures.

In a specific embodiment, the second connection structure includes round steel 13, which is inserted into the pile end reserved hole 14 on the upper precast concrete pile 12.

In a specific embodiment, the second connection structure also includes a grouting layer 15 , and the grouting layer 15 is connected between the two upper precast concrete piles 12 . Further, the second connection structure also includes a pre-embedded steel plate 123 and a welded steel plate 124. The pre-embedded steel plate 123 is fixedly arranged at the end of the lower precast concrete pile 11, and the welded steel plate 124 is connected to the welded steel plates of the two upper precast concrete piles 12 at the same time. 124 fixed connection.

In a specific embodiment, the first connection structure and the second connection structure have the same grouting layer 15, embedded steel plate 123 and welded steel plate 124, thereby improving the precast concrete piles 11 of the lower section and the precast concrete piles 11 of the upper section of the first connection structure. Structural strength of connections between concrete piles 12.

If the upper section of precast concrete pile 12 needs to be connected, since the vertical force on the upper section of the pile is small and the bending moment is large, the flange on one side of the section where the pile is connected will be subject to greater compressive stress, and the other flange will be subject to greater tension. stress, so the pile connection is more complicated. The top end of one upper section precast concrete pile 12 is connected to the bottom end of another upper section precast concrete pile 12. It is necessary to insert the round steel 13 into the reserved hole while pressing mortar into the contact surface and the hole, and then add the upper section precast concrete pile 12. Piles 12 are embedded with steel plates and then welded together with welded steel plates.

The assembled pile slab concrete retaining wall disclosed in the embodiment of this application has the following beneficial technical effects:

1. Compared with cast-in-place concrete structures, prefabricated concrete structures can realize industrial production in factories and shorten the construction period; ensure product quality and reduce material input; standardized production can save materials and reduce waste; the degree of product mechanization High, reducing labor costs and risks. Reducing the amount of on-site work is beneficial to the environment. It is the structural type recommended by the country at this stage. Prefabricated retaining walls play an important role in slope control.

2. The prefabricated pile slab concrete retaining wall not only has the advantages of prefabricated structure, but also can be applied to road shoulder walls or river management in mountainous projects. It does not require a large amount of foundation excavation and reduces the cost.

3. Prefabricated concrete retaining walls can reduce foundation excavation, reduce manual risks, reduce construction costs in mountainous slope projects and river management, shorten the construction period, improve construction quality, and reduce on-site wet work, which is beneficial to environmental protection.

4. Traditional retaining wall construction can easily disturb the slope soil and cause some soil to slide. This application effectively avoids the risk of soil sliding. Traditional retaining wall construction involves a lot of wet work and causes great damage to the environment. This application implements green construction. For traditional retaining walls, on-site construction quality cannot be guaranteed. This application uses factory prefabricated components, and the structural quality is guaranteed. Traditional retaining walls require a lot of manual work. This application uses mechanical work to reduce manual risks and costs.

5. The key technical point of this application is the assembly type. The retaining wall components in this application all use plug-in connections, and there is almost no wet work on site. This application further broadens the application scope of prefabricated retaining walls and is suitable for mountainous building slope management, urban river slope protection management, mountainous road shoulder projects, etc. This application provides a new direction for green construction of urban slope management.

The specific embodiments of the present application have been described above, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, and they should be covered by within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of To facilitate the description of the present application and to simplify the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application. The word 'comprising' does not exclude the presence of elements or steps not listed in a claim. The word 'a' or 'an' preceding an element does not exclude the presence of a plurality of such elements. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used for improvements. Any reference signs in the claims shall not be construed as limiting the scope.

Claims (10)

1. A prefabricated pile slab concrete retaining wall, characterized in that: it includes a plurality of precast concrete piles, precast concrete slabs and prestressed anchor cables, one end of the precast concrete pile is inserted into the slope soil, and the precast concrete pile Installation slots are provided on the side walls, and both ends of the precast concrete slab are inserted into the installation slots of two adjacent precast concrete piles. The precast concrete piles are provided with reserved prestressed anchor cable channels. The prestressed anchor cables pass through the prestressed anchor cable channels and are fixedly connected to the slope soil. 2. A prefabricated pile slab concrete retaining wall according to claim 1, characterized in that: the precast concrete piles include lower precast concrete piles and upper precast concrete piles, and the lower precast concrete piles are inserted into Within the soil of the slope, the installation slot is set on the upper section of precast concrete piles. 3. A prefabricated pile slab concrete retaining wall according to claim 2, characterized in that: the precast concrete piles further include a first connection structure for connecting the lower section of precast concrete piles and the upper section of precast concrete piles. , the first connection structure includes round steel, the lower precast concrete pile and the upper precast concrete pile are both provided with reserved holes at the pile ends, and the round steel is inserted into the reserved holes at the pile ends. 4. A prefabricated pile slab concrete retaining wall according to claim 1, characterized in that: the precast concrete slab is provided with drainage holes. 5. A prefabricated pile slab concrete retaining wall according to claim 1, characterized in that: the lower end of the precast concrete panel is provided with a protrusion, and the upper end of the precast concrete panel is provided with a protrusion for inserting the protrusion. of groove. 6. A prefabricated pile slab concrete retaining wall according to claim 2, characterized in that: the precast concrete piles are provided with a plurality of upper sections of precast concrete piles, and the precast concrete piles also include a plurality of upper sections for connecting lower sections. The second connecting structure of precast concrete piles in the first section and the precast concrete piles in the upper section. 7. A prefabricated pile slab concrete retaining wall according to claim 6, characterized in that: the second connection structure includes round steel, and the round steel is inserted into the reserved pile end on the upper section of the precast concrete pile. inside the hole. 8. A prefabricated pile slab concrete retaining wall according to claim 7, characterized in that: the second connection structure further includes a grouting layer, and the grouting layer is connected to two upper sections of precast concrete piles. between. 9. A prefabricated pile plate concrete retaining wall according to claim 8, characterized in that: the second connection structure further includes a pre-embedded steel plate and a welded steel plate, and the pre-embedded steel plate is fixedly arranged on the lower section of precast concrete. At the end of the pile, the welded steel plate is fixedly connected to the welded steel plates of the two upper precast concrete piles at the same time. 10. A prefabricated pile slab concrete retaining wall according to claim 2, characterized in that: the rectangular cross-section size of the lower precast concrete pile is 700mm×700mm, and the lower precast concrete pile is in The cross-section starts at 900mm at the bottom of the pile and gradually decreases to 100mm×100mm at the bottom of the column.