CN213772764U - Assembled abrupt slope roadbed structure - Google Patents

Abstract

The utility model discloses an assembled steep-slope subgrade structure, comprising ground beams, ground anchors, earth retaining plates, anchorage systems, roadbed fillers and a drainage system. The grooves required for the installation of the retaining plate are reserved on the ground anchor, and the ground anchor is driven into the bedrock of the steep slope, and its outer end is fixedly connected with the ground beam. In the groove, its upper part is fixed by a pull anchor system, the pull anchor system is mainly composed of a connecting rod, a sleeve and a grouting anchor rod, and the pull anchor system is placed at the lower end of the pavement structure layer; the utility model has the advantages of simple structure, stability and safety, With the advantages of convenient construction and low cost, it has achieved assembly construction and is easy to popularize and apply.

Description

Assembled abrupt slope roadbed structure

Technical Field

The utility model relates to an abrupt slope roadbed structure of assemblization.

Background

The steep slope roadbed refers to a road embankment constructed on a steep slope (the ground cross slope exceeds 1:2.5) section or an unstable mountain slope, and is a common roadbed form in the construction of mountain highways.

Because the ground transverse slope is steep, the change of the geological conditions of the basement topography is large, and the steep slope roadbed is easy to generate integral instability or slide damage along the slope or the weak layer zone under the action of load, water and the like.

Aiming at the damage mode of the steep slope subgrade, a corresponding effective treatment design is needed, usually, an anti-skid retaining wall, a reinforcing pile and the like are needed to support and stop and receive the slope, but the anti-skid retaining wall has high requirements on the bearing capacity of the foundation, the reinforcing pile is high in construction difficulty, the slope body is easy to disturb by blasting excavation, the reinforcing cost is high, and the construction period is long. Therefore, the method has important significance in providing a novel low-cost and assembled steep slope roadbed structure.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an overall structure is light-duty, need not to use the reinforcement stake, and is with low costs, through adopting prefabricated concatenation to realize the prefabricated ization, the convenient high efficiency of construction, destroys little to original ecological vegetation in the construction, and green easily popularizes and applies, has practicality and uses the abrupt slope roadbed structure of the assembly of extensive.

In order to solve the above problem, the utility model adopts the following technical scheme:

the utility model provides an abrupt slope roadbed structure of assemblization, includes grade beam, earth anchor, keeps off the native board, draws anchor system, roadbed packing and drainage system, and the grade beam is arranged in road sideline toe department along the route direction, reserves the required recess of fender board installation on the grade beam, and during the abrupt slope basement rock was squeezed into to the earth anchor, its outer end and grade beam fixed connection, keep off the native board setting in road edge, during the recess of grade beam was inserted to its bottom, its upper portion utilized draws anchor system fixed, draw anchor system mainly comprises connecting rod, sleeve and slip casting stock, draws anchor system to arrange the road surface structure layer lower extreme in.

Preferably, the roadbed filling material is filled inside the retaining plate, and the roadbed filling material is made of bubble concrete or bubble concrete blocks, and the light filling body can reduce the pressure on the retaining plate.

Preferably, the ground beam is of a reinforced concrete cast-in-place structure, the soil retaining plate is of a reinforced concrete prefabricated assembly structure, and the lower portion of the ground beam is connected with the ground anchor through a built-in anchor head.

Preferably, the retaining plate is provided with an anchor head, the upper part of the retaining plate is anchored and fixed with the anchor pulling system, and the grouting anchor rod is a mortar grouting anchor rod.

Preferably, the whole Z type structure that is of fender apron, fender apron are the polylith, and the concatenation mode between the fender apron is assembled for the Z type, be equipped with the screw on the fender apron, the bolt passes the screw and carries out fixed connection to adjacent fender apron.

Preferably, the drainage system comprises a drainage ditch and a drain pipe, the drainage ditch is arranged on the outer side of the ground beam, the lower end of the soil blocking plate is provided with a drain hole, and the drain pipe is arranged in the drain hole; the water inside the retaining plate is discharged through the drainage holes, and the water outside is discharged through the drainage ditch.

The utility model has the advantages that: overall structure is light-duty, need not to use the reinforcing pile, and is with low costs, through adopting prefabricated concatenation to realize the prefabricated, and the construction is convenient high-efficient, and it is little to original ecological vegetation destruction in the construction, green easily popularizes and applies, has the universality of practicality and use.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, but the protection scope of the present invention is not limited thereto.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the installation of the retaining plate of the present invention;

FIG. 3 is a schematic view of the retaining plate structure of the present invention;

FIG. 4 is an enlarged schematic view of A-A of the present invention;

the concrete comprises a ground beam 1, a ground anchor 2, a ground line 3, a drainage ditch 4, a soil retaining plate 5, an anchor head 6, a connecting rod 7, roadbed filling 8, a step 9, a pavement structure layer 10, a screw hole 11, a water drainage hole 12, a water drainage pipe 13, a sleeve 14, a grouting anchor rod 15 and a bolt 16.

Detailed Description

Referring to fig. 1 to 4, an assembled steep slope roadbed structure comprises a ground beam 1, ground anchors 2, soil retaining plates 5, anchor pulling systems, roadbed fillers 8 and a drainage system, wherein the ground beam 1 is arranged at the slope toe of a side line of a road along the direction of the line, the ground beam 1 is reserved with grooves required for installing the soil retaining plates 5, the ground anchors 2 are driven into a steep slope bedrock, the outer ends of the ground anchors are fixedly connected with the ground beam 1, the soil retaining plates 5 are arranged at the edge of the road, the bottoms of the soil retaining plates are inserted into the grooves of the ground beam 1, the upper parts of the soil retaining plates are fixed by the anchor pulling systems, the anchor pulling systems mainly comprise connecting rods 7, sleeves 14 and grouting anchor rods 15, and the anchor pulling systems are arranged at the lower end of a road surface structure layer 10.

Further, the roadbed filling 8 is filled inside the retaining plate 5, and the roadbed filling 8 is a light filling body such as bubble concrete, bubble concrete blocks or other filling materials.

Further, the ground beam 1 is a reinforced concrete cast-in-place structure, the soil retaining plate 5 is a reinforced concrete prefabricated assembly structure, and the lower portion of the ground beam 1 is connected with the ground anchor 2 through a built-in anchor head or a steel bar binding connection or in other modes to form a force transmission supporting structure.

Further, be equipped with anchor head 6 on the fender board 5, the upper portion and the anchor system of drawing of fender board 5 anchor are fixed, slip casting stock 15 is mortar slip casting stock.

Further, the whole Z type structure that is of fender board 5, fender board 5 are the polylith, and the concatenation mode between the fender board 5 is assembled for the Z type, be equipped with screw 11 on the fender board 5, bolt 16 passes screw 11 and carries out fixed connection to adjacent fender board 5, has made things convenient for the assembly of fender board, makes adjacent fender board form overall structure, with draw anchor system connection back, forms upper portion bearing structure, resists the soil pressure of road surface structural layer 10 load and road bed filler 8 jointly, plays better supporting role.

Further, the drainage system comprises a drainage ditch 4 and a drain pipe 13, wherein the drainage ditch 4 is arranged on the outer side of the ground beam 1, the lower end of the soil blocking plate 5 is provided with a drain hole 12, and the drain pipe 13 is arranged in the drain hole 12.

Further, the ground anchor is of a grouting anchor rod or anchor cable structure, the length of the ground anchor is not less than 8m, the ground anchor is arranged in the steep slope foundation, and the outer end of the ground anchor is connected with a built-in anchor head of the ground beam in a tensioning and anchoring mode; specifically, one end of the ground anchor is arranged at an angle with the ground beam, preferably 60-90 degrees; the length of the ground anchor is not less than 8m, so that a better anchoring effect can be achieved.

Further, the anchor pulling system is horizontally arranged, horizontal force system transmission is carried out through the connecting rod, specifically, the outer side of the connecting rod is fixedly anchored with a pre-buried anchor head of the earth retaining plate, the inner side of the connecting rod is connected with a grouting anchor rod for driving into a foundation soil body of an abrupt slope through a sleeve, the connecting rod can adopt rod bodies such as reinforcing steel bars or steel strands, but the connecting rod needs to be subjected to anti-corrosion treatment, the grouting anchor rod is a common mortar grouting anchor rod, the length of the grouting anchor rod is not less than 6m, and therefore large bearing capacity can be provided.

Further, the width of the retaining plate is 1-2 m, and the thickness of the retaining plate is selected correspondingly according to the height; when the setting plate width of the retaining plate is 1-2 m, namely the width of each unit retaining plate is 1-2 m; when the height of the retaining plate is 1-3 m, the preferable plate thickness is not less than 15 cm; when the height of the retaining plate is 4-7 m, the preferable plate thickness is not less than 20 cm; when the height of the retaining plate is 8-10 m and the preferable plate thickness is not less than 30cm, the retaining plate can be ensured to have enough strength and rigidity to have stronger supporting effect on the roadbed filling. Wherein the plate height is determined by the filling height of the steep slope roadbed.

Furthermore, for road sections with the filling height of the steep slope roadbed being greater than 4m, two rows of anchor pulling systems and two rows of positioning and fixing connecting bolts need to be arranged, correspondingly, two rows of pre-embedded anchor heads and two rows of reserved screw holes need to be reserved on the soil retaining plate and are arranged at the middle part and the upper part of the soil retaining plate, and therefore the whole structure can be better reinforced and stabilized.

The utility model discloses need earlier excavate step 9 on original ground line 3 before filling, alleviate the pressure that the fender board bore through the step effect.

The utility model has the advantages that:

1. the ground beam is the foundation of the whole structure system, the groove at the top is used for fixing the lower part of the soil retaining plate, and the lower part is connected with the ground anchor to form an integral structure, so that the functions of fixing the soil retaining plate and reinforcing the slope toe are achieved;

2. the ground anchor is arranged in slope toe bedrock of the steep slope subgrade and interacts with the slope bedrock to transmit the acting force on the ground beam to the slope body on one hand and transmit the bearing capacity of the slope body to the structure body of the steep slope subgrade on the other hand;

3. the soil retaining plate is a prefabricated assembled soil retaining structure and transmits the soil pressure of the roadbed filling to the ground beam;

4. the anchor pulling system is a stressed support body at the upper part of the steep slope roadbed structure and provides horizontal resistance for the soil retaining plate;

5. the light filling material can reduce the acting force on the retaining plate on one hand and reduce the uneven settlement of the steep slope roadbed on the other hand;

6. the drainage system is arranged on the outer side of the ground beam at the toe, wherein the water drain pipe is used for draining water in the slope body and at the filling and digging junction, and the drainage ditch is used for draining gathered surface water so as to prevent the toe from being washed away from influencing the stability of the structure;

7. the integral structure is light and reasonable in stress, reinforcing piles are not required to be used, the cost is low, the prefabricated splicing process is adopted to realize assembly, the construction is convenient and efficient, and the damage to original ecological vegetation in the construction is small, so that the ecological vegetation is green and environment-friendly.

The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims (6)

1. The utility model provides an abrupt slope roadbed structure of prefabricated which characterized in that: including grade beam, earth anchor, fender apron, anchor system, road bed filler and drainage system, the grade beam is arranged in road sideline toe department along the route direction, reserves on the grade beam and keeps off the required recess of fender apron installation, and during the steep slope bedrock was squeezed into to the earth anchor, its outer end and grade beam fixed connection, fender apron sets up in road edge, and during the recess of grade beam was inserted to its bottom, its upper portion utilized anchor system fixed, anchor system mainly comprises connecting rod, sleeve and slip casting stock, and the anchor system arranges the road surface structural layer lower extreme in.

2. An assembled steep slope roadbed structure according to claim 1, wherein: the roadbed filler is filled on the inner side of the retaining plate, and the roadbed filler is made of bubble concrete or bubble concrete building blocks.

3. An assembled steep slope roadbed structure according to claim 1, wherein: the ground beam is of a reinforced concrete cast-in-place structure, the soil retaining plate is of a reinforced concrete prefabricated assembly structure, and the lower portion of the ground beam is connected with the ground anchor through a built-in anchor head.

4. An assembled steep slope roadbed structure according to claim 1, wherein: the soil retaining plate is provided with an anchor head, the upper part of the soil retaining plate is anchored and fixed with the anchor pulling system, and the grouting anchor rod is a mortar grouting anchor rod.

5. An assembled steep slope roadbed structure according to claim 1, wherein: the whole Z type structure that is of fender apron, fender apron are the polylith, and the concatenation mode between the fender apron is assembled for the Z type, be equipped with the screw on the fender apron, the bolt passes the screw and carries out fixed connection to adjacent fender apron.

6. An assembled steep slope roadbed structure according to claim 1, wherein: the drainage system comprises a drainage ditch and a water drain pipe, the drainage ditch is arranged on the outer side of the ground beam, a water drain hole is formed in the lower end of the soil retaining plate, and the water drain pipe is arranged in the water drain hole.

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