CN111501459A

CN111501459A - Roadbed structure of mountain road and construction method thereof

Info

Publication number: CN111501459A
Application number: CN202010290907.1A
Authority: CN
Inventors: 张平; 金顺利; 王士振; 潘俊杰; 刘博阳; 吴文兵
Original assignee: Jiangsu Engineering Co Ltd of China Railway 24th Bureau Group Co Ltd
Current assignee: Jiangsu Engineering Co Ltd of China Railway 24th Bureau Group Co Ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2020-08-07
Anticipated expiration: 2040-04-14
Also published as: CN111501459B

Abstract

The invention discloses a roadbed structure of a mountain road and a construction method thereof, which are applied to the field of mountain roads and have the technical scheme that: the soil layer is arranged on the outer edge of the mountain body, a deepening groove is formed in one side, facing the mountain body, of the soil layer, a concrete base layer is poured on the soil layer and extends into the deepening groove, a gravel layer is arranged on one side, away from the soil layer, of the concrete base layer, and an asphalt layer is arranged on one side, away from the concrete base layer, of the gravel layer; has the technical effects that: the roadbed is not easy to move outwards, and the structural stability of the mountain highway is ensured.

Description

Roadbed structure of mountain road and construction method thereof

Technical Field

The invention relates to the field of mountain roads, in particular to a roadbed structure of a mountain road and a construction method thereof.

Background

The mountain road refers to a road with roundabout and tortuous routes, large longitudinal gradient and more special structures in a mountain area. The zones where the routes travel may be divided into along-river (stream) roads, along-waist roads, along-ridge roads and off-ridge roads. The roadbed can be filled and dug deeply, and special difficult places can pass through a tunnel or a viaduct.

The special structure of the mountainous area often causes the condition that the soil layer shakes and moves outwards, so that the roadbed is easy to slide, collapse and the like, and the construction cost and the maintenance cost are high. Therefore, a stable mountain highway subgrade structure is needed in the industry.

Disclosure of Invention

The invention aims to provide a roadbed structure of a mountain road, which has the advantages that: the condition that the subgrade moves outwards can be reduced, and the structural stability of the mountain road is ensured.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides a roadbed structure of mountain area highway, is including setting up the soil layer in the massif outer fringe, the soil layer has been seted up towards one side of massif and has been added the deep groove, the pouring has concrete basic unit on the soil layer, the concrete basic unit extends to in adding the deep groove, one side that the concrete basic unit deviates from the soil layer is equipped with the metalling, one side that the metalling deviates from concrete basic unit is equipped with the pitch layer.

By the technical scheme, the concrete layer can reinforce the roadbed, and the concrete base layer extends into the deepening groove, so that the concrete layer in the deepening groove can play a role in positioning the roadbed, the roadbed is not easy to move outwards, and the structural stability of the mountain road is ensured; the crushed stone layer has a gap, so that the crushed stone layer can play a role in draining and absorbing shock for the roadbed; the asphalt pavement has good stability and ductility, and is not easy to crack by external force, thereby ensuring the stability of the base surface of the roadbed.

The invention is further configured to: a plurality of blind ditches are paved in the gravel layer.

Through the technical scheme, the blind ditch has good drainage capacity, so that the drainage performance of the roadbed can be improved, the possibility of collapse caused by overlarge soil layer humidity due to insufficient drainage speed in rainy days is reduced, and the safety of the roadbed is improved.

The invention is further configured to: a steel wire mesh layer is laid in the gravel layer, a plurality of reinforcing anchors are connected to the steel wire mesh layer, and the reinforcing anchors are obliquely and downwards driven into the mountain body.

Through above-mentioned technical scheme, the steel wire stratum reticulare can play a spacing, reinforced effect to the rubble layer, reduces the possibility that the rubble removed to in reinforcing the anchor squeeze into the mountain body, can fix steel wire stratum reticulare and rubble layer, further strengthen the structural stability of road bed.

The invention is further configured to: one side of the asphalt layer facing the mountain is provided with a plurality of first piles along the length direction, and a protective net is arranged between every two adjacent first piles.

Through the technical scheme, the mountain body and the roadbed can be isolated by the first piles and the protective net, so that the vehicle can be prevented from colliding with the mountain body on the one hand, and the possibility that the vehicle runs is influenced by rolling stones and broken wood on the mountain body and rolling the broken wood on the roadbed can be reduced on the other hand, and the maintenance cost is reduced.

The invention is further configured to: one side that the mountain body was kept away from on the pitch layer is equipped with a plurality of spud piles along length direction, the cover is equipped with the second stake on the spud pile, adjacent two be equipped with the backplate between the second stake, the connection can be dismantled on two second stakes at the both ends of backplate, the external diameter size of second stake is the same with the internal diameter size of french drain.

Through above-mentioned technical scheme, the backplate can prevent at ordinary times that personnel, vehicle from rushing out the road and falling the cliff, thereby reduce the potential safety hazard, and if the massif collapses and blocks the road, search and rescue personnel can pull down the arc board of two adjacent second stake one side of carrying on the back mutually, then with two second stake levels place and insert two blind ditches in, can form a temporary plank road at the road side this moment, so that search and rescue personnel are quick cross the position of collapsing, rescue stranded personnel.

The invention is further configured to: and a reinforcing pipe is arranged in one end of the blind ditch extending out of the gravel layer, and the second pile is inserted in the reinforcing pipe.

Through above-mentioned technical scheme, the reinforcement pipe can improve the structural strength that the blind ditch extends the rubble layer one end to in play a good supporting role to the second stake, reduce the possibility of second stake slope.

The invention is further configured to: and the top of the fixing pile is provided with a lap joint groove for inserting the arc-shaped joint rod on the ladder.

Through above-mentioned technical scheme, when taking place the massif and collapse and lead to the road to cut off, the operator can insert the overlap joint inslot of two fixed columns respectively with two arc joint poles on the ladder in the below to rescue personnel can climb rapidly on the road of massif top along the ladder, so that carry out the rescue action, reduce the time that rescue personnel cleared up the roadblock.

The invention is further configured to: the upper surface of the soil layer is obliquely and downwards arranged towards the direction of the deepening groove.

Through above-mentioned technical scheme, during the pouring concrete, the concrete can be along the slope flow direction of soil layer upper surface in the deepening groove to be convenient for the concrete fill whole deepening groove, and such setting can guarantee that concrete layer's focus is close to the massif, thereby reduces the pressure of massif outside soil layer, improves the stability of road bed.

Another object of the present invention is to provide a roadbed construction method for mountain roads, comprising the steps of: the method comprises the following steps: flattening and compacting a soil layer at the outer edge of the mountain body, gradually pressurizing the upper surface of the soil layer to enable the upper surface of the soil layer to be inclined downwards towards the deepening groove, setting the inclination angle to be 3-5 degrees, excavating the deepening groove on one side of the soil layer towards the mountain body, and enabling the deepening groove to be 25cm in width and 80-120 cm in depth; step two: pouring concrete on the soil layer to fill the deepening grooves with the concrete and form a concrete base layer on the surface of the soil layer, wherein the concrete base layer keeps flat and is maintained by sprinkling water; step three: paving broken stones and a steel wire mesh on the concrete base layer, and driving a reinforcing anchor connected with the steel wire mesh into the mountain body obliquely downwards; step four: and pouring asphalt on the crushed stone layer to form an asphalt layer.

Through above-mentioned technical scheme, the operator is under construction concrete layer, metalling and pitch layer in proper order, and the last road bed structure that forms is stable to and the joint strength between the massif is high, also can keep good stability when the massif takes place slight vibrations, with the possibility that the road bed sinks to the mountain body outside reducing.

The invention is further configured to: and before the second step, fixing the bottoms of the first pile and the fixed pile in the soil layer, and then pouring concrete.

Through above-mentioned technical scheme, first stake and spud pile are fixed and can be passed concrete layer, metalling and pitch layer at the soil layer, can improve the joint strength between first stake and spud pile and the road bed greatly to in first stake and spud pile extend into the soil layer, played the effect of a fixed stock, can strengthen the joint strength between concrete layer and the soil layer in reverse, further improve the structural stability between road bed and the soil layer.

In conclusion, the invention has the following beneficial effects:

1. the concrete layer in the deepening groove can play a role in positioning the roadbed, so that the roadbed is not easy to move outwards, and the structural stability of the mountain highway is ensured;

2. the backplate can form a temporary plank road at the road side to search for and rescue the quick position of surmounting of crossing of personnel, rescue stranded personnel.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment.

Fig. 2 is a schematic structural diagram for embodying a blind ditch in the present embodiment.

Fig. 3 is a schematic structural diagram for embodying the fixing pile of the present embodiment.

Fig. 4 is an enlarged view of a portion a in fig. 1.

Fig. 5 is an enlarged view of a portion B in fig. 3.

Reference numerals: 1. a mountain body; 2. a soil layer; 3. deepening the groove; 4. a concrete base layer; 5. a crushed stone layer; 51. blind ditches; 511. reinforcing the pipe; 52. a steel wire mesh layer; 53. reinforcing the anchor; 6. an asphalt layer; 7. a first pile; 8. a protective net; 9. fixing the pile; 91. a second pile; 911. a guard plate; 92. a lap joint groove; 93. a first board insert; 94. a second board plug; 95. a bolt; 10. a ladder; 101. an arc-shaped joint rod.

Detailed Description

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

Example (b): the utility model provides a roadbed structure of mountain area highway, as figure 1 and figure 2, including setting up the soil layer 2 in 1 outer fringe of massif, soil layer 2 has seted up one deepening groove 3 towards one side edge massif 1 of massif 1, deepening groove 3 wide 25cm, it is dark 80cm ~120cm, soil layer 2's upper surface then sets up downwards towards the direction slope of deepening groove 3, inclination sets up to 3 ~5, the pouring has a layer of concrete basic unit 4 on soil layer 2, concrete basic unit 4 extends into deepening groove 3 and fills up deepening groove 3, the whole focus of concrete basic unit 4 this moment is close to massif 1, consequently, can reduce the pressure of 1 outside soil layer 2 of massif, improve the stability of road bed, and concrete layer 2 in the deepening groove 3 can play a positioning action to the road bed, the condition that the road bed moved outward is difficult for taking place.

If fig. 2, one side that concrete base 4 deviates from soil layer 2 is equipped with rubble layer 5, has laid a plurality of french drains 51 in the rubble layer 5, and each french drain 51 is along equidistant setting of roadbed length direction, and the french drain 51 one end of keeping away from massif 1 exposes rubble layer 5, and during rainy, the rainwater can be arranged to the massif 1 outside through clearance and french drain 51 between rubble layer 5 to reduce the inside ponding of soil layer 2, in order to guarantee the structural strength of soil layer 2 when rainy day. The steel wire mesh layer 52 has been laid in the rubble layer 5, and steel wire mesh layer 52 has set firmly a plurality of and has consolidated anchor 53 towards one side of massif 1, consolidates anchor 53 and squeezes into the massif 1 downwards along the forty-five degree slope in, and steel wire mesh layer 52 can strengthen the structural strength of rubble layer 5 on the one hand, and on the other hand can reduce the possibility that the rubble removed in the rubble layer 5 to improve the shock resistance of rubble layer 5.

As shown in fig. 2, the asphalt layer 6 is poured on the side of the gravel layer 5 away from the concrete layer 2, the asphalt layer 6 has good flatness and can partially penetrate into the gravel layer 5 to further fix the gravel layer 5, and the asphalt layer 6 also has certain flexibility and ductility, so that the possibility of pavement fracture can be reduced when slight vibration is generated in a mountain area.

As shown in fig. 1 and 3, the first piles 7 are arranged on one side of the asphalt layer 6 facing the mountain 1 along the length direction, the first piles 7 are arranged in a plurality of and equally spaced distribution, the protective net 8 is arranged between two adjacent first piles 7, the protective net 8 is woven by synthetic fibers, so that the protective net has good strength and toughness, the mountain 1 and a roadbed can be isolated by the protective net 8, on one hand, vehicles can be prevented from colliding with the mountain 1, on the other hand, the possibility that the vehicles are influenced by rolling stones and broken wood on the mountain onto the roadbed can be reduced, and the maintenance cost is reduced.

Like fig. 2, fig. 3 and fig. 4, one side that mountain 1 was kept away from on pitch layer 6 is equipped with a plurality of equidistant distribution's spud pile 9 along length direction, all overlaps on every spud pile 9 to be equipped with second stake 91, is equipped with backplate 911 between two adjacent second stakes 91, and backplate 911 is equipped with a plurality ofly along vertical direction, and the both ends of backplate 911 can be dismantled through the connecting piece and connect on two second stakes 91. The connecting piece comprises a first inserting plate 93 fixed on the protection plate 911 and a second inserting plate 94 fixed on the second pile 91, wherein the second inserting plate 94 is arranged along the vertical direction, and a bolt 95 penetrating through the second inserting plate 94 and the first inserting plate 93 is arranged on the second inserting plate 94. A reinforcing pipe 511 is arranged in one end of the blind ditch 51 extending out of the gravel layer 5, the reinforcing pipe 511 is made of stainless steel, and the diameter of the second pile 91 is matched with the inner diameter of the reinforcing pipe 511. When landslide and collapse of a mountain body 1 occur in a mountainous area, if roads on the mountain body 1 are blocked by gravel soil, and search and rescue work is difficult to expand, search and rescue personnel can unscrew bolts 95 on second inserting plates 94 on the outer sides of two adjacent second piles 91 and move the two second piles 91 upwards until the two second piles are separated from two fixing piles 9, at the moment, the two second piles 91 connected through a protection plate 911 are inserted into reinforcing pipes 511 of a blind ditch 51 along the horizontal direction, the two second piles 91 and the protection plate 911 can form a horizontal temporary plank road on the outer edge of the mountain body 1, and the temporary plank road can be further lengthened through repeated installation for many times, so that the search and rescue personnel can rapidly cross an obstacle and reach the other side of the obstacle to search and rescue trapped people.

Like fig. 3 and 5, a bridging groove 92 has been seted up at the top of spud pile 9, both sides all are equipped with an arc joint pole 101 about the ladder 10 top, when taking place massif 1 and collapsing and lead to the road to cut off, the operator can insert two arc joint poles 101 on ladder 10 respectively in the bridging groove 92 of two spud piles 9 in the below, thereby rescue personnel can climb rapidly on the road of massif 1 top along ladder 10, so that carry out the rescue action, reduce the time that rescue personnel cleared up the roadblock.

The construction steps are as follows: an operator firstly flattens and compacts the soil layer 2 at the outer edge of the mountain body 1, gradually applies pressure to the upper surface of the soil layer 2 to enable the upper surface of the soil layer 2 to be inclined downwards towards the deepening groove 3, the inclination angle is set to be 3-5 degrees, then the operator excavates the deepening groove 3 at one side of the soil layer 2 towards the mountain body 1, the width of the deepening groove 3 is 25cm, the depth is 80-120 cm, and the construction of the soil layer 2 is finished at the moment. Then, a first pile 7 and a fixing pile 9 are driven into the surface of the soil layer 2, the driving depth is 30cm, the bottoms of the first pile 7 and the fixing pile 9 are fixed in the soil layer 2, then an operator pours concrete, the concrete flows into the deepening groove 3 along the inclined soil layer 2 and fills the deepening groove 3, the concrete is paved on the upper surface of the whole soil layer 2 to form a concrete layer 2, and then the operator trowels the concrete base layer 4 and sprays water for maintenance.

After the concrete layer 2 is solidified, an operator lays broken stones and a steel wire mesh on the concrete base layer 4, obliquely and downwards drives reinforcing anchors 53 connected with the steel wire mesh into the mountain body 1 to fix the position of the steel wire mesh, and finally, asphalt is poured on the broken stone layer 5 and is trowelled to form an asphalt layer 6.

After the asphalt layer 6 is formed, an operator fixes the protective net 8 between two adjacent first piles 7, sleeves the second piles 91 on the fixing piles 9, and finally fixes the protective plate 911 between two adjacent second piles 91 through a connecting piece, so that the construction of the whole mountain roadbed is completed.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a roadbed structure of mountain area highway which characterized in that: including setting up soil layer (2) in massif (1) outer fringe, deepening groove (3) have been seted up towards one side of massif (1) in soil layer (2), the pouring has concrete basic unit (4) on soil layer (2), concrete basic unit (4) extend to in deepening groove (3), one side that concrete basic unit (4) deviate from soil layer (2) is equipped with metalling (5), one side that metalling (5) deviate from concrete basic unit (4) is equipped with asphalt layer (6).

2. The roadbed structure of the mountain road according to claim 1, wherein: a plurality of blind ditches (51) are paved in the crushed stone layer (5).

3. The roadbed structure of the mountain road according to claim 2, wherein: a steel wire mesh layer (52) is laid in the gravel layer (5), a plurality of reinforcing anchors (53) are connected to the steel wire mesh layer (52), and the reinforcing anchors (53) are obliquely and downwards driven into the mountain body (1).

4. The roadbed structure of the mountain road according to claim 3, wherein: one side of the asphalt layer (6) facing the mountain body (1) is provided with a plurality of first piles (7) along the length direction, and a protective net (8) is arranged between every two adjacent first piles (7).

5. The roadbed structure of the mountain road according to claim 2 or 4, wherein: one side that mountain (1) was kept away from in pitch layer (6) is equipped with a plurality of spud piles (9) along length direction, the cover is equipped with second stake (91) on spud pile (9), adjacent two be equipped with backplate (911) between second stake (91), the connection can be dismantled on two second stakes (91) at the both ends of backplate (911), the external diameter size of second stake (91) is the same with the internal diameter size of french drain (51).

6. The roadbed structure of the mountain road according to claim 5, wherein: a reinforcing pipe (511) is arranged in one end of the blind ditch (51) extending out of the gravel layer (5), and the second pile (91) is inserted in the reinforcing pipe (511).

7. The roadbed structure of the mountain road according to claim 6, wherein: the top of the fixing pile (9) is provided with a lap joint groove (92) for inserting the arc-shaped joint rod (101) on the ladder (10).

8. The roadbed structure of the mountain road according to claim 1, wherein: the upper surface of the soil layer (2) is obliquely and downwards arranged towards the direction of the deepening groove (3).

9. A roadbed construction method of a mountain road is characterized by comprising the following steps:

the method comprises the following steps: flattening and compacting a soil layer at the outer edge of the mountain body, gradually pressurizing the upper surface of the soil layer to enable the upper surface of the soil layer to be inclined downwards towards the deepening groove, setting the inclination angle to be 3-5 degrees, excavating the deepening groove on one side of the soil layer towards the mountain body, and enabling the deepening groove to be 25cm in width and 80-120 cm in depth;

step two: pouring concrete on the soil layer to fill the deepening grooves with the concrete and form a concrete base layer on the surface of the soil layer, wherein the concrete base layer keeps flat and is maintained by sprinkling water;

step three: paving broken stones and a steel wire mesh on the concrete base layer, and driving a reinforcing anchor connected with the steel wire mesh into the mountain body obliquely downwards;

step four: and pouring asphalt on the crushed stone layer to form an asphalt layer.

10. The roadbed construction method of the mountain road according to claim 9, wherein: and before the second step, fixing the bottoms of the first pile and the fixed pile in the soil layer, and then pouring concrete.