CN209854714U - Recyclable soil nail assembled flexible surface wall - Google Patents

Abstract

The utility model relates to a recyclable soil nail assembled flexible surface layer wall, which is characterized in that the wall comprises soil nails, an assembled flexible surface layer and a transverse connection body; the soil nail comprises a soil nail body, an expansion body and an anchoring body, wherein a conical soil nail head is arranged at the end part of the soil nail body, and a nail peripheral spiral wire is arranged on the outer ring of the soil nail body; the assembled flexible surface layer consists of a flexible surface layer and a steel wire mesh; the transverse connection body consists of a transverse connection angle steel, a batten plate and a soil nail connector; the slope surface of the foundation pit side slope is provided with vertical drainage grooves and horizontal drainage grooves which are staggered from the transverse direction, and the vertical drainage grooves and the horizontal drainage grooves form a drainage system together with a drainage gutter and a drainage ditch. The utility model discloses a flexible surface course of pin-connected panel to realize the fixed of the flexible surface course of pin-connected panel through soil nail, replace the mode formation surface course of shotcrete, environmental pollution is little, green, and after the foundation ditch excavation was accomplished, materials such as soil nail, the flexible surface course of pin-connected panel, horizontal contact angle steel all recoverable recycles, have reduced the material loss.

Description

Recyclable soil nail assembled flexible surface wall

Technical Field

The utility model relates to a excavation in-process's excavation supporting mode especially relates to a flexible surface course wall of recoverable soil nail pin-connected panel.

Background

The soil nailing wall is strutted and is a commonly used technique in foundation ditch engineering, and traditional soil nailing wall supporting structure wears to locate the domatic soil nail of foundation ditch as application number 201820328989.2 including fixed interval, and a plurality of pegs are worn to be equipped with at the domatic interval of foundation ditch like its technical scheme main points, the peg is vertical setting, the peg laminating in corresponding peg, just the soil nail with peg fixed connection, the domatic net of having laid of foundation ditch, peg and peg wear to locate the net hangs, the net surface sprays has concrete layer, concrete layer cladding is lived string net, peg and peg.

The traditional construction method of the soil nailing wall generally comprises the steps of placing soil nails after a hole is formed in a side slope, then grouting, binding a reinforcing mesh on the slope surface, and finally spraying concrete to form a surface layer. However, the conventional soil nailing wall supporting structure has the following disadvantages: the backfilling is carried out after the foundation pit supporting is finished, the soil nails and the reinforcing mesh surface layer can not be recycled generally, and are directly buried underground, so that not only is the material waste caused, but also the pollution is caused to the geological environment, the soil nails and the reinforcing mesh surface layer become barriers for constructing the peripheral newly-built underground engineering, and the subsequent underground space development is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem of the existing excavation supporting process of the existing foundation pit, and provides a recoverable soil nail pin-connected panel flexible surface wall.

In order to achieve the purpose, the utility model provides a technical scheme does:

the utility model relates to a pair of flexible surface course wall of recoverable soil nail pin-connected panel, including the foundation ditch side slope, its characterized in that: the soil nail, the assembled flexible surface layer and the transverse connection body are included;

the transverse connection bodies are provided with a plurality of groups and are arranged on the foundation pit side slope at intervals up and down, each group of transverse connection bodies comprises two transverse connection angle steels corresponding up and down, a groove is formed between the corresponding transverse connection angle steels, soil nail connectors are arranged in the groove at intervals, each soil nail connector is provided with a soil nail through round hole, a batten plate is arranged at the position, between the adjacent soil nail connectors, of each transverse connection angle steel, the groove is provided with a horizontal drainage groove, the rest parts except the parts provided with the soil nail connectors and the batten plates form horizontal drainage grooves, and the horizontal drainage grooves are filled with permeable bricks;

the assembled flexible surface layer is laid on the surface of the foundation pit side slope and comprises a steel wire mesh and a flexible surface layer, the node of the steel wire mesh is connected with the flexible surface layer through fixing glue, and surface layer soil nail holes are formed in the positions, corresponding to the soil nails, of the flexible surface layer, and penetrate through the round holes;

the soil nail comprises a soil nail body, an expansion body and an anchoring body which are sequentially connected, wherein a conical soil nail head is arranged at the end part of the soil nail body, a nail circumferential spiral wire is arranged on the outer ring of the soil nail body, the soil nail body is inserted into a soil body of the foundation pit side slope, the expansion body is inserted into a soil nail penetrating through a round hole and is fixed with a soil nail connector, a pressure rib plate and a fastening nut are arranged at the anchoring body, and the assembled flexible surface layer is locked with the soil nail connector through the pressure rib plate;

the domatic of foundation ditch side slope be equipped with vertical water drainage tank, vertical water drainage tank arranges with horizontal water drainage tank vertically and horizontally staggered, vertical water drainage tank is filled with the brick that permeates water with the intussuseption.

Preferably, the flexible surface course of pin-connected panel include a plurality of groups wire net and flexible surface course, be provided with the surface course go-between around the wire net, the last border and the right side border of flexible surface course align with the last border and the right side border of the wire net that corresponds respectively, the left side and the downside of flexible surface course leave 1 ~ 1.2 times's net distance as the overlap joint portion, the flexible surface course of adjacent group covers in the overlap joint portion to connecting rib interconnect and formation whole through running through the surface course go-between.

Preferably, the outer ring of the expansion body is provided with a connector thread, a soil nail penetrating circular hole of the soil nail connector is internally provided with a hole internal thread, and the hole internal thread is matched with the connector thread; and the outer ring of the anchoring body is provided with an anchoring thread matched with the fastening nut.

Preferably, the vertical drainage grooves are arranged at intervals of 10 m.

Preferably, the soil nail connector on be equipped with the fastening spacing body, the fastening spacing body sets up the position that is located soil nail through round hole one end of innermost side at the soil nail connector.

Preferably, the top of foundation ditch side slope be equipped with the drainage gutter, the bottom is equipped with the escape canal, vertical drainage tank's bottom and escape canal intercommunication.

Preferably, the soil nail connector including coaxial end plate and the spliced pole of setting, the size of end plate is greater than the size of spliced pole, the spliced pole is fixed with horizontal contact angle steel, the soil nail runs through the axle center position of round hole setting at end plate and spliced pole.

Preferably, the size of the beading plate is larger than the grid size of the steel wire mesh.

Preferably, the top of the foundation pit side slope is also provided with a safety guardrail.

Preferably, the outer side surface of the transverse connection angle steel is flush with the slope surface of the foundation pit side slope.

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

1. the utility model adopts the assembled flexible surface layer, realizes the fixation of the assembled flexible surface layer through the soil nails, and replaces the traditional soil nail wall support to form the surface layer through the concrete spraying mode, thereby having no need of spraying concrete, having little environmental pollution and being green and environment-friendly;

2. after the foundation pit is excavated, the materials such as the soil nails, the assembled flexible surface layer, the transverse connection angle steel and the like can be recycled, so that the material loss is reduced;

3. the special drilling tool is adopted to screw the soil nails into the soil layer, so that hole forming and grouting are not needed, the construction steps of drilling hole forming, mud wall protection, grouting and the like are reduced, the construction efficiency is improved, and mud pollution is avoided;

4. the steps of grouting and concrete spraying are reduced, the time for grouting and concrete curing is correspondingly reduced, and the construction period is shortened;

5. the components such as the assembled flexible surface layer, the soil nails and the like realize standardized production, the quality is reliable, and the construction quality is easy to guarantee and control.

Drawings

FIG. 1 is a schematic view of a recyclable soil nail assembled flexible facing wall connection node;

FIG. 2 is a standard view of a single piece of a sectional flexible facing;

FIG. 3 is a plan view of adjacent panel connections;

FIG. 4 is a top view of the cross-tie angle;

FIG. 5 is a schematic view (A-A section) of a connector of the horizontal connection angle steel, batten plate and soil nail;

FIG. 6 is a cross-section B-B of the soil nail connector;

FIG. 7 is a cross section of a cross-linking angle C-C;

fig. 8 is a structure view of the soil nails.

The figure is marked with: 1-foundation pit slope, 2-groove, 3-horizontal drainage groove, 4-transverse connection angle steel, 5-soil nail, 50-soil nail body, 51-soil nail tip, 52-nail circumferential spiral wire, 53-enlarged body, 54-joint thread, 55-anchoring body, 56-anchoring thread, 6-soil nail connector, 61-end plate, 62-connecting column, 63-soil nail through circular hole, 64-fastening limiting body, 65-hole internal thread, 7-flexible surface layer, 8-fastening nut, 9-rib pressing plate, 10-rib plate, 11-steel wire mesh, 12-surface layer connecting ring, 13-surface layer soil nail hole, 14-node, 15-connecting rib, 17-drainage ditch, 18-drainage gutter, 19-safety guardrail, 20-vertical drainage channel.

Detailed Description

In order to deepen understanding of the present invention, the embodiments of the present invention will be described in detail below with reference to fig. 1 to 8, and the following embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments are given, but the scope of protection of the present invention is not limited to the following embodiments.

Combine the attached drawing 1 to show, the utility model relates to a flexible surface course wall of recoverable soil nail pin-connected panel, including foundation ditch side slope 1, soil nail 5, the flexible surface course of pin-connected panel and transverse connection body.

Referring to fig. 1 and 4, the transverse connection bodies are arranged in multiple groups and are arranged on the foundation pit slope 1 at intervals up and down. As shown in the attached drawing 1 and the attached drawings 4-7, each group of transverse connection bodies comprises two transverse connection angle steels 4 which vertically correspond to each other, the outer side faces of the transverse connection angle steels 4 are flush with the slope face of the foundation pit side slope 1, grooves 2 are formed between the corresponding transverse connection angle steels 4, the width of each groove is 20cm, the depth of each groove is 15cm, the size of each end plate is 20 multiplied by 20cm, and a soil nail connector 6 is arranged in each groove 2 at intervals of 1.2 m. Soil nail connector 6 is including coaxial end plate 61 and the spliced pole 62 that sets up, the size of spliced pole 62 is the same with the interval of the horizontal contact angle steel 4 of the same group, the size of end plate 61 is greater than the size of spliced pole 62, the spliced pole 62 is 18cm long, spliced pole 62 is fixed with horizontal contact angle steel 4, all set up soil nail on every soil nail connector 6 and run through round hole 63, the soil nail runs through the axle center position that round hole 63 set up at end plate 61 and spliced pole 62. The soil nail connector 6 is provided with a fastening limiting body 64, the fastening limiting body 64 is arranged at the position, located at the innermost end of the soil nail through round hole 63, of the soil nail connector 6, and internal threads 65 are arranged in the soil nail through round hole 63.

With reference to fig. 4, the batten plate 10 is arranged at a position, between adjacent soil nail connectors 6, of each transverse connection angle steel 4, so that two transverse connection angle steels 4 in the same group are connected to form a whole, the stability of a transverse connection body is enhanced, except for the soil nail connectors 6 and the batten plate 10, the grooves 2 form horizontal drainage grooves 3 in the rest parts, and the horizontal drainage grooves 3 are filled with water permeable bricks.

With reference to fig. 1, the assembled flexible surface layer is laid on the surface of the foundation pit slope 1. Referring to fig. 2 and 3, the flexible surface layer comprises a plurality of groups of steel wire meshes 11 and flexible surface layers 7, the steel wire meshes 11 are made of stainless steel wires which are criss-cross, and carry out the crooked winding to steel wire tip and form surface course go-between 12 of diameter 1.5cm, the size of wire net 11 is 2.6 x 3.6m, flexible surface course 7 size is 3 x 4m, the last border and the right side border of flexible surface course 7 align with the last border and the right side border of corresponding wire net 11 respectively, the left side of flexible surface course 7 and downside leave 1 ~ 1.2 times's net distance as the overlap joint portion, the node 14 department of wire net 11 is connected with flexible surface course 7 through the fixed glue, the position that flexible surface course 7 corresponds soil nail through round hole 63 is equipped with surface course soil nail hole 13, adjacent group's flexible surface course 7 covers in the overlap joint portion, and through the splice bar 15 interconnect that runs through surface course go-between 12 and form wholly.

Referring to fig. 8, the soil nail 5 includes a soil nail body 50, an enlarged body 53 and an anchoring body 55, which are connected in sequence, wherein the soil nail body 50 has a length of 8m and a diameter of 3cm, the enlarged body 53 has a diameter of 5cm, a tapered soil nail head 51 is arranged at an end of the soil nail body 50, a nail circumferential screw 52 is arranged at an outer ring, a connector thread 54 matched with a hole internal thread 65 is arranged at an outer ring of the enlarged body 53, and an anchoring thread 56 is arranged at an outer ring of the anchoring body 55; during soil nail body 50 inserted the soil body of foundation ditch side slope 1, enlarged body 53 inserted the soil nail and run through round hole 63 and carry out threaded connection through the downthehole screw thread 65 and the connector thread 54 of mutually supporting, in the connection, fastening spacing body 64 is used for restricting the wrong income degree of depth of enlarged body 53, anchor 55 department is equipped with pressure gusset 9 and fastening nut 8, the size of pressure gusset 9 is greater than the net size of wire net 11, it makes pressure gusset 9 lock the flexible surface course of pin-connected panel to screw up fastening nut 8.

Referring to fig. 4, the slope surface of the foundation pit slope 1 is provided with vertical drainage grooves 20, the vertical drainage grooves 20 and the horizontal drainage grooves 3 are arranged in a criss-cross manner, one vertical drainage groove 20 is arranged at intervals of 10m, and the vertical drainage grooves 20 and the inner filling are filled with permeable bricks; referring to fig. 1, a drainage gutter 18 is arranged at the top of the foundation pit side slope 1, a drainage ditch 17 is arranged at the bottom of the foundation pit side slope, the bottom end of the vertical drainage groove 20 is communicated with the drainage ditch 17, and a drainage system formed by the horizontal drainage groove 3, the vertical drainage groove 20, the drainage gutter 18 and the drainage ditch 17 can drain the seepage water of the foundation pit side slope 1 in time.

As shown in the attached drawing 1, a safety guardrail 19 is further arranged at the top of the foundation pit slope 1 to play a role in protection.

The utility model relates to a construction method of flexible surface course wall of recoverable soil nail pin-connected panel does: firstly, excavating foundation pits in layers, grooving a slope surface 1 of the foundation pit formed by excavation, arranging transverse connection angle steel 4 and a vertical drainage groove 20, and then arranging a soil nail connector 6 and a batten plate 10 at a designated position on the transverse connection angle steel 4; building permeable bricks at the rest positions of the transverse connection angle steel 4 in the excavation surface and inside the vertical drainage groove 20; then sequentially laying assembled flexible surface layers from top to bottom, connecting the left and right adjacent assembled flexible surface layers and the upper and lower adjacent assembled flexible surface layers through connecting ribs 15, and strongly screwing the soil nails 5 into the soil body through a special soil nailing machine; the steps are repeated, and the contact angle steel 4 and the vertical drainage groove 20 are excavated layer by layer, the assembled flexible surface layer is paved, and the soil nails 5 are driven into the surface layer until the foundation pit is excavated to the designed depth; and excavating a drainage ditch 17 at the bottom of the foundation pit, so that the drainage groove 20 is communicated with the drainage ditch 17.

The present invention has been described in detail with reference to the embodiments, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims (10)

1. The utility model provides a flexible surface course wall of recoverable soil nail pin-connected panel, includes foundation ditch slope (1), its characterized in that: it comprises soil nails (5), an assembled flexible surface layer and a transverse connection body;

the horizontal connection bodies are provided with a plurality of groups and are arranged on a foundation pit slope (1) at intervals from top to bottom, each group of horizontal connection bodies comprises two horizontal connection angle steel (4) which correspond from top to bottom, a groove (2) is formed between the corresponding horizontal connection angle steel (4), soil nail connectors (6) are arranged in the groove (2) at intervals, a soil nail through round hole (63) is formed in each soil nail connector (6), batten plates (10) are arranged at positions, located between the adjacent soil nail connectors (6), of the horizontal connection angle steel (4), horizontal drainage grooves (3) are formed in the grooves (2) except for the parts provided with the soil nail connectors (6) and the batten plates (10), and water permeable bricks are filled in the horizontal drainage grooves (3);

the assembled flexible surface layer is laid on the surface of the foundation pit side slope (1) and comprises a steel wire mesh (11) and a flexible surface layer (7), the node of the steel wire mesh (11) is connected with the flexible surface layer (7) through fixing glue, and surface layer soil nail holes (13) are formed in the positions, corresponding to the soil nail penetrating round holes (63), of the flexible surface layer (7);

the soil nail (5) comprises a soil nail body (50), an expansion body (53) and an anchoring body (55) which are sequentially connected, a conical soil nail head (51) is arranged at the end part of the soil nail body (50), a nail circumferential spiral wire (52) is arranged on the outer ring of the soil nail body, the soil nail body (50) is inserted into a soil body of the foundation pit slope (1), the expansion body (53) is inserted into a soil nail penetrating circular hole (63) and is fixed with a soil nail connector (6), a rib pressing plate (9) and a fastening nut (8) are arranged at the anchoring body (55), and the assembled flexible surface layer is locked with the soil nail connector (6) through the rib pressing plate (9);

the slope surface of the foundation pit side slope (1) is provided with vertical drainage grooves (20), the vertical drainage grooves (20) and the horizontal drainage grooves (3) are arranged in a vertically and horizontally staggered mode, and the vertical drainage grooves (20) and the inner filling are filled with permeable bricks.

2. The recyclable soil nailing assembled flexible face wall as claimed in claim 1, wherein: the flexible surface course of pin-connected panel include a plurality of groups wire net (11) and flexible surface course (7), be provided with surface course go-between (12) around wire net (11), the last border and the right side border of flexible surface course (7) align with the last border and the right side border of wire net (11) that correspond respectively, the left side and the downside of flexible surface course (7) leave 1 ~ 1.2 times's net distance as the overlap joint part, flexible surface course (7) of adjacent group cover in overlap joint part department, and link (15) interconnect and form wholly through running through surface course go-between (12).

3. The recyclable soil nailing assembled flexible face wall as claimed in claim 1, wherein: the outer ring of the expansion body (53) is provided with a connector thread (54), a soil nail penetrating round hole (63) of the soil nail connector (6) is internally provided with a hole internal thread (65), and the hole internal thread (65) is matched with the connector thread (54); and an anchoring thread (56) matched with the fastening nut (8) is arranged on the outer ring of the anchoring body (55).

4. The recyclable soil nailing assembled flexible face wall as claimed in claim 1, wherein: the vertical drainage grooves (20) are arranged one by one at intervals of 10 m.

5. The recyclable soil nailing assembled flexible face wall as claimed in claim 1, wherein: the soil nail connector (6) is provided with a fastening limiting body (64), and the fastening limiting body (64) is arranged at the position, located at the innermost end of the soil nail through round hole (63), of the soil nail connector (6).

6. The recyclable soil nailing assembled flexible face wall as claimed in claim 1, wherein: the top of foundation ditch side slope (1) be equipped with drainage gutter (18), the bottom is equipped with escape canal (17), the bottom and escape canal (17) intercommunication of vertical drainage tank (20).

7. The recyclable soil nailing assembled flexible face wall as claimed in claim 1, wherein: soil nail connector (6) including coaxial end plate (61) and spliced pole (62) that set up, the size of end plate (61) is greater than the size of spliced pole (62), spliced pole (62) are fixed with horizontal contact angle steel (4), the soil nail runs through round hole (63) and sets up the axle center position at end plate (61) and spliced pole (62).

8. The recyclable soil nailing assembled flexible face wall as claimed in claim 1, wherein: the size of the rib pressing plate (9) is larger than the size of the meshes of the steel wire mesh (11).

9. The recyclable soil nailing assembled flexible face wall as claimed in claim 1, wherein: and a safety guardrail (19) is also arranged at the top of the foundation pit side slope (1).

10. The recyclable soil nailing assembled flexible face wall as claimed in claim 1, wherein: the outer side surface of the transverse connection angle steel (4) is flush with the slope surface of the foundation pit side slope (1).