1. The utility model provides a highway is filled out and is dug boundary roadbed structure which characterized in that: the road comprises a basic road section, wherein the basic road section comprises a filling road section (1), a transition road section (2) and an excavation road section (18), transition steps (8) and a first drainage ditch (7) are arranged on the filling road section (1), and a second drainage ditch (9) and a side slope (10) are arranged on the excavation road section (18);

the road section from the first drainage ditch (7) to the second drainage ditch (9) in the basic road section inclines downwards from the middle part of the road section to the first drainage ditch (7) and the second drainage ditch (9), and the inclination angle is 0.5-1.5 degrees;

the road section from the first drainage ditch (7) to the second drainage ditch (9) in the basic road section comprises a cement gravel layer (6), a cement gravel layer (5), an asphalt lower seal coat (4) and an asphalt concrete surface layer (3), wherein the cement gravel layer (6) is positioned on the bottom layer of the road section, the cement gravel layer (5) is paved on the cement gravel layer (6), the asphalt lower seal coat (4) is paved on the cement gravel layer (5), and the asphalt concrete surface layer (3) is paved on the asphalt lower seal coat (4);

the side slope (10) is provided with a platform (11), the platform (11) is provided with a platform ditch (12), and the top of the side slope (10) is provided with a catch basin (13).

2. The road filling and excavating boundary roadbed structure of claim 1, wherein: second escape canal (9) are including rubble layer (9-1), concrete layer (9-2), cement mortar face (9-3), rubble layer (9-1) is spread in the bottom, and concrete layer (9-2) are spread on rubble layer (9-1) to be equipped with semicircle arc-shaped ditch in the upper surface, concrete layer (9-2) upper surface is spread there is cement mortar face (9-3), cement mortar face (9-2) and concrete layer (9-2) upper surface are parallel, cement mortar face (9-3) are covered with mesh apron (9-4).

3. The road filling and excavating boundary roadbed structure of claim 1, wherein: the two sides of the first drainage ditch (7) are inclined downwards from the outside to the inside, the inclination angle is 20-70 degrees, and the first drainage ditch (7) is formed by piling masonry rubbles with the strength not less than MU 30.

4. The road filling and excavating boundary roadbed structure of claim 1, wherein: the platform drainage ditch (12) is formed by stacking mortar-bonded flaked stones with the mortar strength not less than M7.5.

5. The road filling and excavating boundary roadbed structure of claim 1, wherein: the side slope (10) is provided with arc-shaped edged stones (16), plants (17) are planted on the inner sides of the arc-shaped edged stones (16), and a water flowing groove (14) is built between the arc-shaped edged stones (16) and the arc-shaped edged stones (16).

6. The road filling and excavating boundary roadbed structure of claim 1, wherein: a step ladder (15) is arranged on the side slope (10).

7. A highway filling and digging boundary roadbed construction operation method is characterized by comprising the following steps of; when the method is implemented, cleaning and compacting the basal layer of the original slope surface, and particularly comprises the steps of excavating a longitudinal temporary ditch, excavating earthwork from the longitudinal ditch, and cultivating the earthwork on the outer side of the ditch to form a ditch ridge so as to prevent surface water on the outer side of the roadbed from being discharged into the roadbed basal; cutting down and digging roots of trees, shrubs and the like in the land occupation range of the roadbed before construction, removing surface soil, cleaning and flattening the embankment base, flattening and compacting after drying in the sun, and removing the surface soil of a filling section by 200mm, wherein the compaction degree is not less than 90%; filling materials such as sand, gravel, broken stone and the like at the bottom of the embankment for reinforcement to form a stable layer with good water stability;

excavating a transition section step (8) at the position of the transition section at the filling and excavating junction on the filling road section, and performing annular compaction;

excavating one side of the highway, backfilling the other side of the highway, paving geocells on a roadbed, and filling and compacting soil;

paving a cement sand gravel layer (6), a cement gravel layer (5), an asphalt lower seal layer (4) and an asphalt concrete surface layer (3) on the road surface respectively;

the method comprises the steps of carrying out slope construction on a filling road section (1), arranging a first drainage ditch (7) and the like at the bottom of the filling road section, carrying out construction on a side slope of an excavation road section (18), excavating and stacking a intercepting ditch and a platform drainage ditch, paving arc-shaped rimstones (16) on the slope, and building a water flowing groove (14) between the arc-shaped rimstones (16).

Background

With the arrival of the large construction of the expressway in China, particularly after the idea of 'county and county access expressway' is put forward, the construction of the expressway is transferred to a mountainous area, and the expressway in the mountainous area is basically a high fill roadbed and is staggered in filling and digging. The high fill subgrade is easy to subside due to the large dead weight, the tight construction period, the long rain season in mountainous areas and the non-standard construction, and particularly, the settlement is obvious at the horizontal and vertical filling and digging junction, so that the problems of pavement cracking, subsidence and the like are caused, and the traffic safety is greatly influenced. The roadbed filling at the high-speed filling and digging junction of the mountainous area is a prominent difficult problem at present.

The drainage structure is one of the most common infrastructure in highway engineering, and mainly has the main functions of reducing accumulated water and avoiding water seepage in a pavement structure; however, current road surface drainage structures on the market are to daily ordinary precipitation, completion drainage work that can be fine, but when rainfall is too big, current design can't change according to actual need, thereby easily lead to the drainage untimely, make the ponding condition of production on the road bed road surface, influence pedestrian's vehicle normal current, and road bed one side slope among the prior art has the effect that can effectively ensure the road bed stability, but current slope is mostly to use concrete and stone material to protect the side slope, the slope content is ponding easily, and there is not drainage structures, inconvenient ponding discharge in the side slope, along with the increase of live time leads to the protective layer to remove easily, seriously still can cause collapsing, there is the potential safety hazard.

Disclosure of Invention

Therefore, in order to solve the above-mentioned defects, the invention provides a highway cut-and-fill boundary roadbed structure which is reasonable in design, guides water flow to a drainage ditch, avoids accumulated water on a road surface, is convenient to drain accumulated water on a side slope and avoids side slope collapse, and a construction operation method.

The invention is realized in such a way that a highway filling and excavating boundary roadbed structure is constructed, the highway filling and excavating boundary roadbed structure comprises a basic road section, the basic road section comprises a filling road section, a transition road section and an excavating road section, transition steps and a first drainage ditch are arranged on the filling road section, and a second drainage ditch and a side slope are arranged on the excavating road section;

the road section from the first drainage ditch to the second drainage ditch in the basic road section inclines downwards from the middle part of the road section to the first drainage ditch and the second drainage ditch, and the inclination angle is 0.5-1.5 degrees;

the road section from the first drainage ditch to the second drainage ditch in the foundation road section comprises a cement sand gravel layer, a cement gravel layer, an asphalt lower sealing layer and an asphalt concrete surface layer, wherein the cement sand gravel layer is positioned at the bottom layer of the road section;

the side slope is provided with a platform, a platform ditch is arranged on the platform, and a catch basin is arranged at the top of the side slope.

Further, the second escape canal includes rubble layer, concrete layer, cement mortar surface, the rubble layer is laid in the bottom, and concrete layer is laid on the rubble layer to be equipped with semicircle arcuation ditch in the upper surface, concrete layer upper surface is laid cement mortar surface, cement mortar surface and concrete layer upper surface are parallel, cement mortar surface is covered with the mesh apron, and the aim at of this setting avoids when the infiltration, avoids large garbage to get into the second escape canal, blocks up the second escape canal.

Furthermore, two sides of the first drainage ditch incline downwards from the outside to the inside, the inclination angle is 20-70 degrees, the first drainage ditch is formed by stacking masonry rubbles with the strength not less than MU30, and the purpose of the arrangement is to facilitate collecting water flow into the first drainage ditch.

Furthermore, the platform drainage ditch is formed by stacking mortar-bonded rubbles with the mortar strength not less than M7.5, and the arrangement aims to reduce the cost and improve the strength.

Further, the side slope is equipped with arc edged stone, the plant has been planted to arc edged stone inboard, the tye has been built between arc edged stone and the arc edged stone, and the aim at of this setting is convenient for with the slope in ponding water conservancy diversion to platform escape canal and second escape canal in, plant the plant and can improve the ability of remaining water of way slope body, retention soil that can be better prevents soil loss.

Further, be provided with the ladder of marking time on the slope, the aim at of this setting, the staff climbing of being convenient for is overhauld.

A highway filling and digging boundary roadbed construction operation method; when the method is implemented, cleaning and compacting the basal layer of the original slope surface, and particularly comprises the steps of excavating a longitudinal temporary ditch, excavating earthwork from the longitudinal ditch, and cultivating the earthwork on the outer side of the ditch to form a ditch ridge so as to prevent surface water on the outer side of the roadbed from being discharged into the roadbed basal; cutting down and digging roots of trees, shrubs and the like in the land occupation range of the roadbed before construction, removing surface soil, cleaning and flattening the embankment base, flattening and compacting after drying in the sun, and removing the surface soil of a filling section by 200mm, wherein the compaction degree is not less than 90%; filling materials such as sand, gravel, broken stone and the like at the bottom of the embankment for reinforcement to form a stable layer with good water stability;

excavating transition section steps at the position of the transition section at the filling and excavating junction on the filling road section, and performing annular compaction;

excavating one side of the highway, backfilling the other side of the highway, paving geocells on a roadbed, and filling and compacting soil;

paving a cement gravel layer, an asphalt lower seal layer and an asphalt concrete surface layer on the pavement respectively;

and carrying out slope construction on the filling road section, arranging a first drainage ditch and the like at the bottom of the filling road section, constructing a side slope of the excavation road section, excavating and piling a intercepting ditch and a platform drainage ditch, paving arc-shaped rimstones on the slope surface, and building a water flowing groove between the arc-shaped rimstones.

The invention has the following advantages: the invention has reasonable design, and can guide the water flow of the road surface to the drainage ditches at two sides by inclining the extrusion road section to two sides, and the arrangement of the intercepting ditches and the platform ditches on the side slopes can discharge the accumulated water of the side slopes conveniently and avoid the collapse of the side slopes.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic view of a second drain structure;

fig. 3 is a schematic diagram of a slope structure.

In the figure: 1. filling road sections; 2. a transition section; 3. an asphalt concrete layer; 4. sealing the asphalt lower layer; 5. a cement crushed stone layer; 6. a cement gravel layer; 7. a first drain ditch; 8. a transition step; 9. a second drain ditch; 9-1, a crushed stone layer; 9-2, concrete layer; 9-3, cement mortar surface; 9-4, a mesh cover plate; 10. side slope; 11. a platform; 12; a platform drainage ditch; 13. intercepting a ditch; 14. a launder; 15. stepping steps; 16. an arc-shaped edged stone; 17. a plant; 18. and (6) digging a square road section.

Detailed Description

The present invention will be described in detail with reference to fig. 1 to 3, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a highway filling and excavating boundary roadbed structure which comprises a basic road section, wherein the basic road section comprises a filling road section 1, a transition road section 2 and an excavating road section 18, transition steps 8 and a first drainage ditch 7 are arranged on the filling road section 1, and the excavating road section 18 is provided with a second drainage ditch 9 and a side slope 10;

the road section from the first drainage ditch 7 to the second drainage ditch 9 in the basic road section inclines downwards from the middle part of the road section to the first drainage ditch 7 and the second drainage ditch 9, and the inclination angle is 0.5-1.5 degrees;

the road section from the first drainage ditch 7 to the second drainage ditch 9 in the basic road section comprises a cement sand gravel layer 6, a cement gravel layer 5, an asphalt lower seal coat 4 and an asphalt concrete surface layer 3, wherein the cement sand gravel layer 6 is positioned at the bottom layer of the road section, the cement gravel layer 5 is paved on the cement sand gravel layer 6, the asphalt lower seal coat 4 is paved on the cement gravel layer 5, and the asphalt concrete surface layer 3 is paved on the asphalt lower seal coat 4;

the side slope 10 is provided with a platform 11, the platform 11 is provided with a platform ditch 12, and the top of the side slope 10 is provided with a catch basin 13.

In this embodiment, the second drainage ditch 9 includes rubble layer 9-1, concrete layer 9-2, cement mortar face 9-3, rubble layer 9-1 is spread in the bottom, and concrete layer 9-2 is spread on rubble layer 9-1 to be equipped with half circular arc shape ditch on the upper surface, concrete layer 9-2 upper surface is spread with cement mortar face 9-3, cement mortar face 9-2 is parallel with concrete layer 9-2 upper surface, be stamped mesh apron 9-4 on the cement mortar face 9-3, and the purpose of this setting is avoided the infiltration in, avoids large-scale rubbish to get into the second drainage ditch, blocks up second drainage ditch 9.

In the embodiment, two sides of the first drainage ditch 7 are inclined downwards from the outside to the inside at an inclination angle of 20-70 degrees, the first drainage ditch 7 is formed by stacking masonry rubbles with the strength not less than MU30, and the arrangement is aimed at facilitating the collection of water flow into the first drainage ditch 7.

In the present embodiment, the platform drain 12 is formed by stacking stone chips having a mortar strength of not less than M7.5, and this is intended to reduce the cost and improve the strength.

In this embodiment, side slope 10 is equipped with arc edged stone 16, plant 17 has been planted to arc edged stone 16 inboard, gutter 14 has been built between arc edged stone 16 and the arc edged stone 16, and the purpose of this setting is convenient for with the slope in ponding water conservancy diversion to platform escape canal and second escape canal in, plant the plant and can improve the ability of remaining water of way slope body, the soil that can be better remains, prevents that soil from running off.

In this embodiment, a step ladder 15 is arranged on the side slope 10, and the purpose of the arrangement is to facilitate climbing and maintenance of workers.

When the method is implemented, cleaning and compacting the basal layer of the original slope surface, and particularly comprises the steps of excavating a longitudinal temporary ditch, excavating earthwork from the longitudinal ditch, and cultivating the earthwork on the outer side of the ditch to form a ditch ridge so as to prevent surface water on the outer side of the roadbed from being discharged into the roadbed basal; cutting down and digging roots of trees, shrubs and the like in the land occupation range of the roadbed before construction, removing surface soil, cleaning and flattening the embankment base, flattening and compacting after drying in the sun, and removing the surface soil of a filling section by 200mm, wherein the compaction degree is not less than 90%; filling materials such as sand, gravel, broken stone and the like at the bottom of the embankment for reinforcement to form a stable layer with good water stability;

excavating a transition section step 8 at the position of the transition section at the filling and excavating junction on the filling road section, and performing annular compaction;

excavating one side of the highway, backfilling the other side of the highway, paving geocells on a roadbed, and filling and compacting soil;

paving a cement gravel layer 6, a cement gravel layer 5, an asphalt lower seal layer 4 and an asphalt concrete surface layer 3 on the road surface respectively;

the slope construction is carried out on the filling road section 1, a first drainage ditch 7 and the like are arranged at the bottom of the filling road section, then the construction is carried out on the side slope of the excavation road section 18, a piling intercepting ditch and a platform drainage ditch are dug, arc-shaped rimstones 16 are laid on the slope, and a water flowing groove 14 is built among the arc-shaped rimstones 16.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.