CN210288433U

CN210288433U - Super-thick permanent support structure for shotcrete of mountain slope

Info

Publication number: CN210288433U
Application number: CN201920251461.4U
Authority: CN
Inventors: 王浩
Original assignee: Wuhan Wujian Machinery Construction Co ltd
Current assignee: Wuhan Wujian Machinery Construction Co ltd
Priority date: 2019-02-27
Filing date: 2019-02-27
Publication date: 2020-04-10
Anticipated expiration: 2029-02-27

Abstract

The utility model provides a permanent supporting construction of super thickness shotcrete of mountain side slope, relates to the technical field of side slope support construction, including the slope body, the slope body includes top of slope and domatic, still includes a plurality of rows of fender pile and is used for connecting the connector plate of fender pile, a plurality of rows the fender pile all follows the vertical embedding in top of slope department is in the slope body, connector plate hugs closely the top of slope surface, domatic with the vertical face of top of slope juncture is digging away form the shotcrete region behind domatic. The utility model discloses have and strut that intensity is high and strut lasting technological effect.

Description

Super-thick permanent support structure for shotcrete of mountain slope

Technical Field

The utility model belongs to the technical field of the technique of side slope support construction and specifically relates to a permanent supporting construction of super thickness shotcrete of massif side slope is related to.

Background

In the process of excavating the mountain slope, along with the increase of the excavation depth, an anchor rod (cable) retaining wall, a counterfort retaining wall, a gravity retaining wall and the like are usually adopted for supporting, so that the structural stability of the mountain slope is ensured. In the field slope support of mountain slopes, the situation that the space for placing slopes at local positions is insufficient often occurs, so that the support mode cannot be adopted for construction.

In order to solve the problems, a Chinese patent with a patent publication number of CN206538771U provides a side slope supporting system, which comprises a supporting net, an anchor rod and a retaining wall, wherein the anchor rod penetrates through the supporting net to be anchored on a side slope soil body and tightly presses the supporting net on the surface of the side slope soil body, the retaining wall is arranged below the side slope soil body, the anchor rod comprises a cylindrical rod body which can be inserted into the side slope soil body, two tensile plates which are coaxially hinged in the rod body and are axially and symmetrically arranged relative to the rod body, and a mandrel which can be axially inserted into the rod body and pushes the tensile plates to rotate so as to enable the tensile plates to extend out of the; the lateral wall of the rod body is provided with a strip-shaped opening used for enabling the tensile plate to extend out.

The above prior art solutions have the following drawbacks: in the slope supporting system, after the anchor rod is used for a long time, the anchor rod is out of work due to the fact that cohesive force between the anchor rod and a soil layer is greatly reduced, the strength of the supporting structure cannot meet the design requirement, the characteristics of a permanent supporting structure cannot be met, and potential hazards are brought to the safety of the mountain slope supporting structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a support the permanent supporting construction of super thickness shotcrete that intensity is high and strut lasting mountain slope.

The utility model discloses a can realize through following technical scheme:

the utility model provides a permanent supporting construction of super thickness shotcrete of mountain side slope, includes the slope body, the slope body includes top of slope and domatic, still includes a plurality of rows of fender pile and is used for connecting the connector plate of fender pile, a plurality of rows the fender pile all follows the vertical embedding in top of slope department in the slope body, connector plate hugs closely the top of slope surface, domatic with the vertical face of top of slope juncture is digging away form the shotcrete region behind domatic.

By adopting the technical scheme, the plurality of rows of support piles are vertically embedded into the slope body from the top of the slope, and the plurality of rows of support piles limit the soil at the top of the slope, so that the soil at the top of the slope is not easy to collapse when the slope is excavated; on the other hand, when the slope surface is steep and the slope space is insufficient, compared with a mode of nailing piles on the slope surface, the mode that the supporting piles are embedded into the slope body from the top of the slope is easier and more convenient to construct. The connecting steel plate connects all the supporting piles together, the connecting steel plate connects a plurality of supporting piles into a stable whole, the reinforcing effect of the plurality of supporting piles on the slope body is more stable, the possibility of landslide is further reduced, and the supporting piles and the connecting steel plate act together to enable supporting on the top of the slope to be firmer and more durable.

Further setting the following steps: the connecting steel plate comprises a plurality of vertical I-shaped steels and a plurality of transverse I-shaped steels, the transverse I-shaped steels are arranged at each row, the top of the supporting pile is fixedly connected, and the vertical I-shaped steels and the transverse I-shaped steels are fixedly connected to form a grid. By adopting the technical scheme, the connecting steel plate is fixedly connected with the transverse H-shaped steel through the vertical H-shaped steel to form a grid shape, the transverse H-shaped steel connects all the single-row supporting piles together to enable the single-row supporting piles to be stressed integrally, and the vertical H-shaped steel connects the front row supporting piles and the rear row supporting piles into a whole, so that the integral stress of the plurality of supporting piles can be more uniform through the H-shaped steel fixed into the grid shape, and the supporting strength and the stability are improved.

Further setting the following steps: and an inclined drain pipe is arranged in the soil layer below the slope top, one end of the drain pipe is embedded into the soil layer, and the other end of the drain pipe is inclined downwards and extends to the outer side of the spray anchor area.

Through adopting above-mentioned technical scheme, because moisture in the soil layer itself contains, when meetting rainwater weather, during partial water can permeate supporting construction in the soil layer of periphery, if not in time with these infiltration discharge soil layers, these infiltration can cause the soil layer structure soft to lead to the domatic collapse, influence and strut intensity. Therefore, the inclined drain pipe is arranged in the soil layer below the slope top, and the drain pipe can timely drain the seepage water in the soil layer to the outside of the soil layer, so that the internal structure strength of the soil layer is kept free from the seepage water, and the supporting effect is better.

Further setting the following steps: the outside cladding of drain pipe has the filter screen, be equipped with the metalling that is used for filtering silt in the outside soil layer of filter screen.

Through adopting above-mentioned technical scheme, at the outside cladding filter screen of drain pipe, the filter screen can prevent silt in the soil layer to get into in the drain pipe to reduce the possibility that the drain pipe blockked up, the rubble layer in the soil layer also can play the filtering action simultaneously, reduces the possibility that silt got into the drain pipe.

Further setting the following steps: and a plurality of fixing clamps used for clamping the top of the support pile are welded on the bottom surface of the transverse I-shaped steel, which is in contact with the surface of the slope top.

By adopting the technical scheme, the plurality of fixing clamps used for clamping the tops of the supporting piles are welded on the bottom surfaces of the transverse H-shaped steel and the slope top surface, so that the transverse H-shaped steel can clamp the tops of the supporting piles through the fixing clamps and keep fixed with the supporting piles, and if welding is supplemented, the transverse H-shaped steel and the supporting piles can be combined more firmly and stably, and firm and durable supporting can be carried out on the slope top.

Further setting the following steps: the supporting pile is a steel pipe or a steel bar, the bottom of the supporting pile is conical and is provided with a grouting hole.

By adopting the technical scheme, the support pile is a steel pipe or a steel bar, so that the existing support pile has better structural strength and service life, the steel pipe and the steel bar are cheap and easy to obtain, and the cost of construction materials is reduced.

Further setting the following steps: and a reinforcing mesh is arranged in the anchor spraying area and comprises a plurality of transverse reinforcing mesh sheets and vertical reinforcing mesh sheets which are connected in a criss-cross mode.

Through adopting above-mentioned technical scheme, the regional reinforcing bar net that sets up by a plurality of horizontal reinforcing bar net pieces and vertical reinforcing bar net piece vertically and horizontally staggered connection and form that spouts the anchor, then during the spout anchor, can pour the concrete with the reinforcing bar net as the internal frame, make the reinforced concrete structure intensity of pouring in the spout anchor region higher, strut the effect better.

Further setting the following steps: and a bending strip for hanging the reinforcing mesh on the sleeve is arranged on the bottom surface of one transverse I-steel close to the spray anchor area in the plurality of transverse I-steels.

By adopting the technical scheme, the bottom surface of the transverse I-shaped steel close to the spray anchoring area is provided with the bending strip for hanging the reinforcing mesh on the sleeve, the reinforcing mesh is hung on the transverse I-shaped steel, and then the concrete in the spray anchoring area, the connecting steel plate and the support pile are connected into a whole, so that the overall structural strength is improved, the stress dispersion on the slope surface is more uniform, and the support strength and the support durability are improved.

To sum up, the utility model discloses a beneficial technological effect does:

(1) the traditional method of nailing supporting piles on the slope surface for supporting is abandoned, a plurality of rows of supporting piles are vertically embedded into the slope body from the top of the slope, and the plurality of rows of supporting piles limit soil at the top of the slope, so that the soil at the top of the slope is not easy to collapse when the slope is excavated; moreover, when the slope surface is steep and the slope releasing space is insufficient, compared with a mode of nailing piles on the slope surface, the mode that the supporting piles are embedded into the slope body from the top of the slope is easier and more convenient to construct, and the supporting is firmer and more durable;

(2) an inclined drain pipe is arranged in the soil layer below the slope top, one end of the drain pipe is embedded into the soil layer, the other end of the drain pipe is inclined downwards and extends to the outer side of the spray anchor area, and the drain pipe can timely drain seepage water in the soil layer to the outside of the soil layer, so that the problem of slope top collapse caused by loose and soft soil layer structure is avoided, and the long-term use of the supporting structure is facilitated;

(3) the reinforcing steel bar grids in the anchor spraying area are hung and sleeved on the transverse I-shaped steel close to the anchor spraying area through the bent strips, and concrete in the anchor spraying area, the connecting steel plate and the supporting piles are connected into a whole, so that the overall structural strength is improved, the stress dispersion on the slope surface is more uniform, and the supporting strength and the supporting durability are improved.

Drawings

FIG. 1 is a schematic side sectional view of the present invention when a slope is not excavated;

FIG. 2 is a schematic view of a cross-sectional side view of the slope of the present invention after excavation is completed;

FIG. 3 is an enlarged schematic view of region A in FIG. 2;

FIG. 4 is a schematic view of the mounting structure of the horizontal and vertical I-beams on the hill top of FIG. 2;

fig. 5 is a schematic structural view of the mesh reinforcement of fig. 2 and 4.

Reference numerals: 1. a slope body; 2. supporting piles; 3. connecting steel plates; 4. a spray anchor region; 5. vertical I-steel; 6. transverse I-shaped steel; 7. a drain pipe; 8. a fixing clip; 9. grouting holes; 10. steel bar grids; 11. transverse reinforcing mesh sheets; 12. a vertical reinforcing mesh sheet; 13. bending the strip; 14. the top of the slope; 15. a slope surface; 16. a concrete layer; 17. filtering with a screen; 18. and (4) a crushed stone layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a permanent supporting construction of super thickness shotcrete of mountain side slope, including the slope body 1, a plurality of rows of fender pile 2 (this embodiment uses three rows as the example) and connect the steel sheet 3 of a plurality of rows of fender pile 2, the slope body 1 includes slope top 14 and domatic 15, and the row number of fender pile 2 is selected according to the excavation depth of mountain side slope. The diameter of each supporting pile 2 is 300mm, the material adopts a steel pipe with the diameter of 48mm (or a twisted steel bar with the diameter of 28mm, when the supporting pile 2 is the steel pipe, the bottom of the cone of the steel pipe is provided with a grouting hole 9. three rows of supporting piles 2 are vertically embedded into the slope body 1 from the top 14, the connecting steel plate 3 is tightly attached to the surface of the top 14, after the supporting piles 2 and the connecting steel plate 3 are installed, the slope surface 1 is dug away, the vertical surface at the junction of the slope surface 1 and the top 14 is the anchor spraying area 4. three rows of supporting piles 2 are vertically embedded into the slope body 1 from the top 14, then the three rows of supporting piles 2 are connected through the connecting steel plate 3, the supporting piles 2 are nailed into the slope body 1 from the top 14, so that the supporting piles are suitable for the condition that construction is inconvenient when the slope surface 15 is steeper and the slope space is insufficient, the connecting steel plate 3 connects a plurality of supporting piles 2 into a whole, and each supporting pile 2 is combined to have good integral structural strength and stability, the supporting strength is higher.

The connecting steel plate 3 is composed of a plurality of transverse H-shaped steels 6 (the number of the transverse H-shaped steels 6 is consistent with the row number of the support piles 2) and a plurality of vertical H-shaped steels 5 (four are taken as examples in the embodiment), the number of the H-shaped steels is 12, the length of each transverse H-shaped steel 6 is 6 m, the H-shaped steels are welded and connected through deformed steel bars with the diameter of 18mm, the length of each vertical H-shaped steel 5 is cut according to the field condition, and the transverse H-shaped steels 6 are welded and connected with the vertical H-shaped steels 5.

Referring to fig. 2 and 4, three transverse h-beams 6 are respectively and fixedly connected to the tops of three rows of support piles 2, four vertical h-beams 5 are uniformly distributed along the length direction of the transverse h-beams 6 and are connected with the three transverse h-beams 6, and the transverse h-beams 6 and the vertical h-beams 5 are fixedly connected to form a grid shape. The top surfaces and the bottom surfaces of the transverse H-shaped steel 6 and the vertical H-shaped steel 5 are parallel to the surface of the slope top 14, and the bottom surfaces of the transverse H-shaped steel 6 and the vertical H-shaped steel 5 are laid against the surface of the slope top 14. The fixing clamp 8 is welded on the bottom surface of the transverse H-shaped steel 6, which is in surface contact with the slope top 14, the fixing clamp 8 is in a circular ring shape with the inner diameter equal to the diameter of the supporting pile 2, and the supporting pile 2 penetrates through the fixing clamp 8 and then is welded with the fixing clamp 8. In order to prevent water accumulation in the grids on the slope top 14, a concrete layer 16 which covers the transverse I-shaped steel 6 and the vertical I-shaped steel 5 is poured on the slope top 14. A drainage hole is drilled in the soil layer below the slope top 14, the diameter of the drainage hole is 80mm, and the drainage hole and the support pile 2 are arranged in a staggered mode. An inclined drain pipe 7 is laid in each drain hole, and the drain pipe is made of PVC50 material. One end of the water discharge pipe 7 is embedded into the soil layer on the inner side of the spray anchor area 4, and the other end is inclined downwards and extends to the outer side of the spray anchor area 4. The outside of the drain pipe 7 is covered with a filter screen 17 (see fig. 3), the filter screen 17 covers the end part of the drain pipe 7 embedded in the soil layer, and a gravel layer 18 for filtering silt is paved in the spray anchor area 4 outside the filter screen 17 and the soil layer on the top of the slope.

The water drainage pipe 7 can timely drain seepage water in a soil layer to the outside of the soil layer, so that the internal structural strength of the soil layer is kept free from seepage water, and the supporting effect is better. The transverse H-shaped steel 6 penetrates through the fixing clamp 8 through the top of the supporting pile 2 to be connected with the supporting pile 2, and meanwhile, welding is assisted, so that the transverse H-shaped steel 6 and the supporting pile 2 can be combined more firmly and stably, and firm and durable supporting can be carried out on the surface of the slope top 1.

Referring to fig. 2 and 4, a reinforcing mesh 10 is laid in the spray anchor region 4, the reinforcing mesh 10 includes a plurality of criss-cross connected transverse reinforcing mesh sheets 11 and vertical reinforcing mesh sheets 12, the transverse reinforcing mesh sheets 11 and the vertical reinforcing mesh sheets 12 are both tied by using double-layer bidirectional reinforcing bars, the diameter of each reinforcing bar is 8mm, and the distance between each adjacent transverse reinforcing mesh sheet 11 and each adjacent vertical reinforcing mesh sheet 12 is 200 mm. In order to form a good integral structure between the reinforcing mesh 10 and the connecting steel plate 3 and the support piles 2, the side circumference of a row of support piles 2 close to the spray anchoring area 4 is tangent to the vertical surface of the spray anchoring area 4, meanwhile, one side of the bottom of the transverse I-shaped steel 6 close to the spray anchoring area 4 is welded with an upward bending strip 13, the top end of the reinforcing mesh 10 is hung on the bending strip 13 and welded with the bending strip 13, one side of the reinforcing mesh 10 close to the support piles 2 is welded or tied with the support piles 2, and the spray anchoring thickness in the spray anchoring area 4 is 200mm-300 mm. The concrete in the spray anchor area 4, the connecting steel plate 3 and the support pile 2 are connected into a whole, so that the overall structural strength is improved, the stress dispersion of the spray anchor area 4 is more uniform, and the support strength and the support durability are improved.

The implementation principle and the beneficial effects of the embodiment are as follows: a plurality of rows of support piles 2 vertically embedded into the slope body 1 are driven into the slope top 14, compared with a mode of nailing piles into the slope surface 15, the support piles 2 are easier and more convenient to construct in a mode of being embedded into the slope body 1 from the slope top 14, and the method is suitable for the conditions that the slope surface 15 is steep and the space for putting the slope is insufficient. A plurality of fender piles 2 connect into a whole through horizontal I-steel 6 and vertical I-steel 5 to place reinforcing bar net 10 in the spray anchor region 4 that forms after digging slope 15 away, reinforcing bar net 10 all is connected with horizontal I-steel 6 and fender pile 2, make the combination between spray anchor region 4 and the slope body 1 more firm, and spray anchor thickness in spray anchor region 4 is 200 plus one's money 300mm, the support intensity in spray anchor region 4 can be improved to super thick spray anchor thickness, it is more stable to strut.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a permanent supporting construction of super thickness shotcrete of mountain side slope, includes slope body (1), slope body (1) is including top of slope (14) and domatic (15), its characterized in that: the anchor spraying device is characterized by further comprising a plurality of rows of support piles (2) and connecting steel plates (3) used for being connected with the support piles (2), wherein the support piles (2) are vertically embedded into the slope body (1) from the slope top (14), the connecting steel plates (3) are tightly attached to the surface of the slope top (14), and the vertical surface of the junction of the slope surface (15) and the slope top (14) is excavated away to form an anchor spraying area (4) after the slope surface (15) is excavated.

2. The ultra-thick permanent shotcrete supporting structure for a mountain side slope according to claim 1, wherein: the connecting steel plate (3) comprises a plurality of vertical I-beams (5) and a plurality of transverse I-beams (6), the transverse I-beams (6) are arranged at each row, the top of the supporting pile (2) is fixedly connected, and the vertical I-beams (5) are fixedly connected with the transverse I-beams (6) to form a grid.

3. The ultra-thick permanent shotcrete supporting structure for a mountain side slope according to claim 2, wherein: an inclined drain pipe (7) is arranged in the soil layer below the slope top (14), one end of the drain pipe (7) is embedded into the soil layer, and the other end of the drain pipe is inclined downwards and extends to the outer side of the spray anchor area (4).

4. The ultra-thick permanent shotcrete supporting structure for a mountain side slope according to claim 3, wherein: the outside cladding of drain pipe (7) has filter screen (17), be equipped with rubble layer (18) that are used for filtering silt in the outside soil layer of filter screen (17).

5. The ultra-thick permanent shotcrete supporting structure for a mountain side slope according to claim 2, wherein: the bottom surface of the transverse I-shaped steel (6) in surface contact with the slope top (14) is welded with a plurality of fixing clamps (8) for clamping the top of the support pile (2).

6. The ultra-thick permanent shotcrete supporting structure for a mountain side slope according to claim 1, wherein: the supporting pile (2) is a steel pipe or a steel bar, the bottom of the supporting pile (2) is conical, and a grouting hole (9) is formed in the bottom.

7. The ultra-thick permanent shotcrete supporting structure for a mountain side slope according to claim 2, wherein: be provided with reinforcing bar net (10) in spout anchor region (4), reinforcing bar net (10) include a plurality of criss-cross horizontal reinforcing bar net piece (11) and vertical reinforcing bar net piece (12) of connecting.

8. The ultra-thick permanent shotcrete supporting structure for a mountain side slope according to claim 7, wherein: and a bending strip (13) for hanging the reinforcing mesh (10) is arranged on the bottom surface of one transverse I-shaped steel (6) close to the spray anchor area (4) in the plurality of transverse I-shaped steels (6).