CN215715392U - Side slope supporting structure - Google Patents

Side slope supporting structure Download PDF

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Publication number
CN215715392U
CN215715392U CN202120961856.0U CN202120961856U CN215715392U CN 215715392 U CN215715392 U CN 215715392U CN 202120961856 U CN202120961856 U CN 202120961856U CN 215715392 U CN215715392 U CN 215715392U
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China
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anchor
slope
side slope
layer
soil
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CN202120961856.0U
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陈建立
李大为
封浪浪
高元
曹敏
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SCEGC No 9 Construction Engineering Group Co Ltd
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SCEGC No 9 Construction Engineering Group Co Ltd
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Abstract

The utility model discloses a side slope supporting structure which comprises a side slope hardening layer, soil nails and anchor pulling structures, wherein the side slope hardening layer is a fence-shaped reinforced concrete hardening layer arranged on the outer layer of a side slope, a plurality of water drainage holes are formed in the side slope hardening layer and communicated with water drainage surfaces on the inner side of the side slope hardening layer, the soil nails and the anchor pulling structures are arranged through the side slope hardening layer and arranged in soil on the inner side of the side slope hardening layer, and the soil nails and the anchor pulling structures are arranged in a staggered manner; the combined type supporting structure of the soil nails and the prestressed anchor cables is used as temporary support, soil thrust on the inner side of a hardened layer of the side slope is blocked, construction is simple, efficient, safe and feasible, the construction period can be greatly shortened, cost is reduced, and the combined type supporting structure has the advantages of being convenient to construct and good in supporting effect.

Description

Side slope supporting structure
Technical Field
The utility model belongs to the technical field of geotechnical engineering slope reinforcement, and particularly relates to a slope supporting structure.
Background
The building industry is used as an important component in the economic system of China, and plays a great promoting role in the development of national economy; the municipal engineering construction has the characteristics of uncontrollable property and complexity, and the overall effect of the municipal engineering can be directly influenced; in the whole construction process, the foundation pit construction is used as a core process, and the construction quality of the whole project is determined; therefore, in the municipal engineering construction, various slope support technologies need to be further optimized and researched, and support and guarantee are provided for smoothly carrying out the municipal engineering construction and improving the municipal engineering construction quality; the side slope support refers to a retaining, reinforcing and protecting measure which is adopted for the side slope to ensure the safety of the side slope and the environment;
the conventional protection method is to adopt a method of constructing side slope grids for treatment and prevention, the side slope grids are mostly in a circular, arched or rhombic shape, the surfaces of the side slope grids are flat sections, soil is covered in the middle for grass planting, but because the side slope grids do not have a flow guiding or guiding device, the side slope is washed by rainwater to form gullies every rainy season, so that water and soil loss is caused, and when the side slope grids are subjected to heavy rain or instantaneous rainfall in successive days, the situation is more obvious, the water and soil loss and landslide phenomena are aggravated, stable guarantee cannot be provided for the safety of roads, impurities such as garbage washed by water flow are easily scattered in various places, and in order to stabilize the side slope and avoid the water and soil loss, a large amount of manpower resources are required to be arranged for backfilling and planting the gullies formed by rainwater washing, and a large amount of manpower and material resources are required to be picked up for the garbage after a flood season, so that a large amount of manpower and material resources are required.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide a side slope supporting structure, which adopts a soil nail and prestressed anchor cable combined type supporting structure as a temporary support to block the soil thrust on the inner side of a hardened layer of a side slope, has simple, efficient, safe and feasible construction, can greatly shorten the construction period, reduces the cost, and has the characteristics of convenient construction and good supporting effect.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a side slope supporting structure, includes side slope sclerosis layer, soil nail and anchor pulling structure, side slope sclerosis layer is for setting up at the outer fence-shaped reinforced concrete sclerosis layer of side slope, and is in be provided with a plurality of outlet on the side slope sclerosis layer, outlet and the inboard sluicing face intercommunication in side slope sclerosis layer, soil nail and anchor pulling structure all pass the setting of side slope sclerosis layer, and set up in the inboard soil body on side slope sclerosis layer, just soil nail and the crisscross setting of anchor pulling structure.
Preferably, the slope sclerosis layer pour by reinforcing bar net piece and fine aggregate concrete injection and form, just soil nail and anchor structure all set up on the handing-over node of reinforcing bar net piece, cut apart into a plurality of grid pieces with the slope sclerosis layer.
Preferably, the reinforcing proportion of the reinforcing mesh is as follows: the transverse direction is phi 8@ 150; the longitudinal direction is phi 8@ 150; the fine stone concrete has a fine stone grade of C20 and a spray thickness of 80 mm.
Preferably, a drain pipe is arranged in the drain hole, the inclination angle of the drain pipe is 15 degrees, and a permeable layer is arranged at one section of the tail end of the drain pipe, which is close to the drain surface.
Preferably, the soil nail is a reinforced concrete structure poured in the borehole, and comprises an external anchoring body and a soil nail rod body, wherein the soil nail rod body is arranged in the external anchoring body.
Preferably, the anchor pulling structure is a multi-stage yielding anchor rod, the anchor pulling structure sequentially comprises an anchor cable, an anchor head, a free section L1, an anchor section L2 and a guide head from inside to outside from the outside of a drill hole, and the anchor head and the guide head are respectively arranged at two ends of the anchor cable; and the anchoring section L2 still is provided with stringing ring and lock ring, and wherein stringing ring equidistance sets up in the outside of lock ring, and the anchor rope is set up on stringing ring and lock ring, forms multistage structure of letting press.
Preferably, the frame wire ring is of a star-shaped structure, and the anchor cable is fixedly erected in a limiting groove of the star-shaped structure of the frame wire ring.
Preferably, the anchor cable of the free section L1 includes a smooth sleeve and a steel strand, and the smooth sleeve is movably sleeved on the outer side of the steel strand.
Preferably, the anchor head and the tightening ring are both provided with anchor locking holes, and the anchor locking holes are matched with the end parts of the steel strands for use.
Preferably, a grouting pipe of a through anchor pulling structure is further arranged in the tightening ring.
The utility model has the beneficial effects that: the utility model discloses a side slope supporting structure, compared with the prior art, the improvement of the utility model is that:
aiming at the problems in the prior art, the utility model designs a side slope supporting structure, which adopts a soil nail and prestressed anchor cable combined type supporting structure as a temporary support, and when in use: (1) the supporting structure is simple and the performance is good; the slope hardened layer and the anchor cable are convenient to assemble and stretch, the slope hardened layer is convenient to construct, and has certain strength and stability and a certain waterproof effect; meanwhile, the device is combined with the anchor cable, so that the influence of soil thrust on the retaining wall can be eliminated, and the device is safer and more stable; (2) the labor intensity is low, the efficiency is low, the single piece of combined supporting material is relatively light in weight, the movement is convenient, the labor intensity is low, and if row pile supporting is adopted, large-scale machinery is required to be matched and completed, the efficiency is low; (3) the structure has the supporting characteristic of rigidity and flexibility, when the pre-lifting thrust and the anchor cable tension are balanced, the structure is in a rigid stable state, when external load or earthquake horizontal force acts, the anchor cable can stretch out and draw back to offset the influence of external load, and the integral stability of the structure is ensured; (4) finally, the anchor pulling structure is a multi-stage yielding anchor rope, so that when the anchor pulling structure is used, the contact area between the anchor pulling structure and a drilling hole is large, the multi-stage yielding structure can effectively buffer external force, and the safety of a supporting structure is ensured.
Drawings
Fig. 1 is a schematic structural view of a side slope supporting structure in a use state.
FIG. 2 is a front view of a slope hardened layer of the present invention.
Fig. 3 is a schematic structural view of a weep hole of the present invention.
Fig. 4 is a schematic structural view of the soil nail of the present invention.
FIG. 5 is a schematic view of the structure of the soil nailing rod body of the present invention.
Fig. 6 is a schematic structural view of the anchor pulling structure of the present invention.
Fig. 7 is a partial enlarged view of the anchor pulling structure a of the present invention.
Fig. 8 is a partial enlarged view of the anchor pulling structure B of the present invention.
Wherein: 1. the concrete anchor comprises a slope hardening layer, 11 grid blocks, 12 reinforcing mesh, 13 drainage holes, 14 top hardening layer, 15 drainage grooves, 16 water retaining walls, 2 soil nails, 21 external anchor bodies, 22 soil nail rod bodies, 3 anchor pulling structures, 31 anchor heads, 32 wire erecting rings, 33 tightening rings, 34 guide heads, 35 grouting pipes, 36 smooth sleeves and 37 steel strands.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following further describes the technical solution of the present invention with reference to the drawings and the embodiments.
Refer to the slope supporting construction that fig. 1-8 are shown, including slope sclerosis layer 1, soil nail 2 and anchor structure 3, slope sclerosis layer 1 is for setting up at the outer fence shape reinforced concrete sclerosis layer of side slope, and be provided with a plurality of outlet 13 on the slope sclerosis layer 1, outlet 13 and 1 inboard sluicing face intercommunication in slope sclerosis layer, soil nail 2 all passes slope sclerosis layer 1 setting with anchor structure 3, and sets up in the inboard soil body of slope sclerosis layer 1, for guaranteeing the anchor effect, soil nail 2 sets up with anchor structure 3 is crisscross.
Preferably, slope sclerosis layer 1 is pour by reinforcing bar net piece 12 and fine aggregate concrete and is formed, just soil nail 2 all sets up on the handing-over node of reinforcing bar net piece 12 with anchor structure 3, cuts apart into a plurality of grid pieces 11 with slope sclerosis layer 1, wherein the reinforcing bar is vertical to be arranged.
Preferably, for the sclerosis and the fixed effect of guaranteeing slope sclerosis layer 1, reinforcing bar net 12 the arrangement of reinforcement proportion be: the transverse direction is phi 8@ 150; the longitudinal direction is phi 8@ 150; and the fine stone grade of the fine stone concrete is C20, the spraying thickness is 80mm, and a slope hardened layer 1 is formed.
Preferably, in order to prevent the collapse of the slope top of the side slope due to high pressure, a top hardened layer 14 is further arranged at the top of the slope hardened layer 1, a water retaining wall 16 is built on the top hardened layer 14, and a drainage groove 15 is arranged on the inner side of the water retaining wall 16; the foundation of the retaining wall 16 is tamped and leveled by using plain soil, the retaining wall is built by using a pull-through line, MU10 bricks and M10 mortar are used for building, the height is 300mm, the width is 240mm, and the exposed surface is subjected to cement mortar grinding for three times.
Preferably, in order to ensure the drainage effect of the drainage hole 13, a drainage pipe is arranged in the drainage hole 13, the inclination angle of the drainage pipe is 15 degrees, a permeable layer 17 is arranged at the tail end of the drainage pipe, which is close to the drainage surface, and the permeable layer 17 is a double-layer drainage non-waterproof geotextile wrapped on the drainage pipe; the design position of the drainage holes 13 is that the drainage holes 13 are arranged from 0.3m upward from the sloping field, the horizontal and vertical spacing of the drainage holes 13 is only 3.0m, and more drainage holes 13 are required to be arranged in the water seepage surface.
Preferably, the soil nails 2 are concrete structures poured in the boreholes, and comprise external anchors 21 and soil nail rods 22, wherein the soil nail rods 22 are arranged in the external anchors 21, and the external extending parts of the soil nail rods 22 are connected with the slope hardening layer 1.
Preferably, in order to ensure the anchor pulling effect, the anchor pulling structure 3 is a multi-stage yielding anchor rod, and sequentially comprises an anchor cable, an anchor head 31, a free section L1, an anchoring section L2 and a guide head 34 from inside to outside from the outside of a drilled hole, wherein the anchor head 31 and the guide head 34 are respectively arranged at two ends of the anchor cable to fix the anchor cable; and the anchoring section L2 is further provided with a stringing ring 32 and a tightening ring 33, wherein the stringing ring 32 is equidistantly arranged on the outer side of the tightening ring 33, and the anchor cable is erected on the stringing ring 32 and the tightening ring 33 to form a multi-stage yielding structure.
Preferably, in order to increase the surface area of the stringing ring 32 and ensure the grouting quality, the stringing ring 32 is of a star-shaped structure, and the anchor cable is fixedly erected in a limiting groove of the star-shaped structure of the stringing ring 32 to fix the anchor cable.
Preferably, the anchor cable of the free section L1 includes a smooth sleeve 36 and a steel strand 37, the smooth sleeve 36 is movably sleeved on the outer side of the steel strand 37, the steel strand is protected by the smooth sleeve 36, and the steel strand of the free section L1 is prevented from being rusted and damaged in the drill hole.
Preferably, the anchor head 31 and the hoop 33 are both provided with an anchor locking hole, and the anchor locking hole is matched with the end part of the steel strand 37 for use to fix the steel strand 37.
Preferably, for grouting purposes, a grouting pipe 35 of the anchor pulling structure 3 is arranged in the tightening ring 33.
This soil nail + prestressed anchorage cable combined type supporting construction has following advantage:
(1) the supporting structure is simple and the performance is good; the slope hardened layer and the anchor cable are convenient to assemble and stretch, the slope hardened layer is convenient to construct, and has certain strength and stability and a certain waterproof effect; meanwhile, the device is combined with the anchor cable, so that the influence of soil thrust on the retaining wall can be eliminated, and the device is safer and more stable;
(2) the labor intensity is low, the efficiency is low, the single piece of combined supporting material is relatively light in weight, the movement is convenient, the labor intensity is low, and if row pile supporting is adopted, large-scale machinery is required to be matched and completed, the efficiency is low;
(3) the structure has the supporting characteristic of rigidity and flexibility, when the pre-lifting thrust and the anchor cable tension are balanced, the structure is in a rigid stable state, when external load or earthquake horizontal force acts, the anchor cable can stretch out and draw back to offset the influence of external load, and the integral stability of the structure is ensured;
(4) finally, the anchor pulling structure is a multi-stage yielding anchor rope, so that when the anchor pulling structure is used, the contact area between the anchor pulling structure and a drilling hole is large, the multi-stage yielding structure can effectively buffer external force, and the safety of a supporting structure is ensured.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (9)

1. A side slope supporting structure is characterized in that: including side slope sclerosis layer (1), soil nail (2) and anchor pulling structure (3), side slope sclerosis layer (1) is for setting up at the outer fence shape reinforced concrete sclerosis layer of side slope, and is in be provided with a plurality of outlet (13) on side slope sclerosis layer (1), outlet (13) and side slope sclerosis layer (1) inboard sluicing face intercommunication, soil nail (2) and anchor pulling structure (3) all pass side slope sclerosis layer (1) and set up, and set up in the inboard soil body on side slope sclerosis layer (1), just soil nail (2) and anchor pulling structure (3) crisscross the setting.
2. A slope support structure according to claim 1, wherein: slope sclerosis layer (1) pour by reinforcing bar net piece (12) and pea gravel concrete injection and form, just soil nail (2) and anchor structure (3) all set up on the handing-over node of the strengthening rib of reinforcing bar net piece (12), cut apart into a plurality of grid pieces (11) slope sclerosis layer (1).
3. A slope support structure according to claim 1, wherein: a drain pipe is arranged in the drain hole (13), the inclination angle of the drain pipe is 15 degrees, and a permeable layer (17) is arranged at the tail end of the drain pipe, close to the drain surface, at one section.
4. A slope support structure according to claim 1, wherein: the soil nail (2) is a reinforced concrete structure poured in a drill hole and comprises an external anchoring body (21) and a soil nail rod body (22), and the soil nail rod body (22) is arranged in the external anchoring body (21).
5. A slope support structure according to claim 1, wherein: the anchor pulling structure (3) is a multi-stage yielding anchor rod and sequentially comprises an anchor cable, an anchor head (31), a free section L1, an anchoring section L2 and a guide head (34) from inside to outside from the outside of a drill hole, wherein the anchor head (31) and the guide head (34) are respectively arranged at two ends of the anchor cable; and the anchoring section L2 is also provided with a stringing ring (32) and a tightening ring (33), wherein the stringing ring (32) is equidistantly arranged on the outer side of the tightening ring (33), and the anchor cable is erected on the stringing ring (32) and the tightening ring (33) to form a multi-stage yielding structure.
6. A slope support structure according to claim 5, wherein: the anchor cable is characterized in that the wire stringing ring (32) is of a star-shaped structure, and the anchor cable is fixedly erected in a limiting groove of the star-shaped structure of the wire stringing ring (32).
7. A slope support structure according to claim 5, wherein: the anchor cable of the free section L1 comprises a smooth sleeve (36) and a steel strand (37), wherein the smooth sleeve (36) is movably sleeved on the outer side of the steel strand (37).
8. A slope support structure according to claim 5, wherein: the anchor head (31) and the tightening ring (33) are both provided with anchor locking holes, and the anchor locking holes are matched with the end parts of the steel strands (37) for use.
9. A slope supporting construction according to any one of claims 5 to 8, wherein: and a grouting pipe (35) of the through anchor pulling structure (3) is also arranged in the tightening hoop (33).
CN202120961856.0U 2021-05-07 2021-05-07 Side slope supporting structure Active CN215715392U (en)

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Application Number Priority Date Filing Date Title
CN202120961856.0U CN215715392U (en) 2021-05-07 2021-05-07 Side slope supporting structure

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Application Number Priority Date Filing Date Title
CN202120961856.0U CN215715392U (en) 2021-05-07 2021-05-07 Side slope supporting structure

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CN215715392U true CN215715392U (en) 2022-02-01

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115288165A (en) * 2022-08-17 2022-11-04 国网福建省电力有限公司电力科学研究院 Grading slope protection method for slope protection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115288165A (en) * 2022-08-17 2022-11-04 国网福建省电力有限公司电力科学研究院 Grading slope protection method for slope protection

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