CN218478977U - White-to-black road surface integrated structure of existing road bed block stone retaining wall - Google Patents

Abstract

The utility model discloses a white-to-black road surface integrated structure of existing road block stone retaining wall, including the retaining wall of original road bed, drain pipe, fill and former cement concrete pavement, mainly form the basic unit after breaking up the petrochemical nature with former cement concrete pavement resonance, and lay wire net and surface course in proper order on the basic unit, and the outside and the top of retaining wall all are equipped with the reinforcing bar net fixed by the anchor bar, and this reinforcing bar net and the wire net on the basic unit interconnect and spray cement concrete and form the integrated structure; therefore, the utility model has the advantages of simple structure, economical and applicable, safe and reliable, energy saving and emission reduction and dynamic self-stress balance, it can better energy saving and resources are protected to embody green energy-saving road engineering construction theory, it combines corresponding construction method, still has higher economic benefits, energy saving and emission reduction benefit and social.

Description

White-to-black road surface integrated structure of existing road bed block stone retaining wall

Technical Field

The utility model relates to an energy-saving road construction field specifically indicates that existing road bed piece stone retaining wall's white changes black road surface integral structure.

Background

In order to actually improve the happiness and the acquaintance of people in mountainous areas, four good rural villages are built, ecological tourism roads in rural areas are beautified, abundant tourism resources in mountainous areas are developed, the road traffic capacity and the service level are improved, and the early-stage construction of a damaged cement concrete pavement into an asphalt concrete pavement, namely 'white-to-black' and the reinforcement and reconstruction of a roadbed retaining wall are needed.

The method is characterized in that cement concrete is poured on the outer side of an original retaining wall to increase the section of the retaining wall or additionally arrange a tie bar in a roadbed to reinforce the retaining wall, meanwhile, a steel wire mesh is arranged between a new asphalt concrete pavement and a base layer of a resonance rubblization of the original asphalt concrete pavement to change the asphalt concrete pavement into white and black, the old road reconstruction method reconstructs the pavement and the retaining wall as independent parts, the mutual relation between the pavement and the retaining wall is ignored, and the total stress and the economic benefit of the structure are poor. The overall coordinated stress effect of each part of the engineering structure is better than the independent stress of each part, so that the method of integrally designing the bottom steel wire mesh of the white-modified black asphalt concrete pavement and the reinforcement of the original retaining wall is adopted, the coordinated stress of the pavement and the retaining wall is obviously facilitated, and the greater economic benefit and energy-saving benefit are brought into play.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome prior art's defect and provide a simple structure, economy is suitable for, safe and reliable, energy saving and emission reduction, developments self-stress balance's existing road bed block stone retaining wall's white black road surface integral structure that changes.

The technical problem of the utility model is realized through following technical scheme:

a white-to-black road surface integrated structure of an existing road bed block stone retaining wall comprises the retaining wall, a drain pipe, a filling and an original cement concrete road surface of an original road bed, wherein the original cement concrete road surface is subjected to resonance rubblization to form a base layer, and a steel wire mesh and a surface layer are sequentially laid on the base layer; the outside and the top of the retaining wall are both provided with reinforcing mesh fixed by anchoring reinforcing steel bars, and the reinforcing mesh and the steel mesh on the base layer are connected with each other and sprayed with cement concrete to form an integrated structure.

The steel bar net and the steel wire net on the base layer are connected with each other and sprayed with cement concrete to form a protective layer, the protective layer of the sprayed cement concrete is C30, the thickness of the protective layer is 8 cm-20 cm, the thickness of the protective layer of the steel bar net is not less than 3cm, and the protective layer on the top of the retaining wall can also be made of cast-in-situ C30 cement concrete.

The reinforcing mesh is a reinforcing mesh formed by welding hot rolled steel bars; the reinforcing mesh and the steel wire mesh on the top of the retaining wall are welded into a whole, and the protective layer and the surface layer form an integrated structure to bear force together.

The anchoring steel bar is a hot rolled steel bar; the reinforcing mesh is fixed with the outer side and the top of the retaining wall through anchoring reinforcing steel bars, and the anchoring reinforcing steel bars are inserted into block stone gaps of the retaining wall or drilled holes are inserted into block stones of the retaining wall and distributed in a quincunx shape.

The steel wire mesh is a hexagonal double-twisted metal mesh woven by antiseptic treated steel wires through a machine, and the longitudinal lap joint width of the steel wire mesh is 20-30 cm, and the transverse lap joint width of the steel wire mesh is 15-20 cm; a plurality of distributed reinforcing steel bars are woven into the steel wire mesh at certain intervals along the longitudinal direction of the base layer, and simultaneously, 1 distributed reinforcing steel bar is respectively woven into the edges of the two sides of the base layer along the longitudinal direction; the steel wire mesh is fixed on the base layer through anchoring steel nails, and the anchoring points of the anchoring steel nails are longitudinally 90-100 cm or 50-60 cm and transversely 70-80 cm or 40-50 cm and are arranged in a quincunx shape.

The distributed reinforcing steel bars are ordinary hot-rolled round reinforcing steel bars, the longitudinal distance along the base layer is 1 or 2 hexagonal meshes, and the two side edges of the base layer are disconnected every 2-3 m along the longitudinal distance of 1 distributed reinforcing steel bar woven in and release stress.

The retaining wall is a protective structure of a mountain road foundation block masonry to be improved; the surface layer is a modified black asphalt concrete pavement.

The base layer is formed by crushing a raw cement concrete pavement through a resonance crusher, the upper half part of the base layer is made into compact granular fragments smaller than 10cm, and the lower half part of the base layer is made into interlocking and meshing granular fragments of 10 cm-20 cm.

Compared with the prior art, the utility model mainly provides a white of existing road bed piece stone retaining wall changes black road surface integral structure, it includes the retaining wall of original road bed, the drain pipe, fill and basic unit behind the former cement concrete pavement resonance rubble ization nature and the wire net and the surface course of laying in proper order on it, and simultaneously, the outside and the top of retaining wall all are equipped with the reinforcing bar net by anchor bar is fixed, this reinforcing bar net and the wire net interconnect in the basic unit and spray cement concrete and form integral structure. The utility model has the advantages of as follows: firstly, the original cement concrete pavement slab is crushed into a base layer by adopting a resonance rubblized base layer and a steel wire mesh laying process, so that the base layer is utilized in place, materials are saved, and energy conservation and emission reduction are realized; secondly, the steel wire mesh at the bottom of the surface layer of the modified white-to-black asphalt concrete and the reinforcing steel bar mesh for reinforcing the retaining wall are mutually connected at the top of the retaining wall, when a vehicle runs on the surface layer, the steel wire mesh at the bottom of the surface layer is subjected to settlement and elongation to generate dynamic tension on the top of the retaining wall, disappears along with the leaving of the vehicle, increases along with the increase of the weight and the quantity of the vehicle, has the opposite direction to the horizontal active soil pressure direction of the retaining wall, plays a role in dynamic self-stress balance, enhances the stability of the retaining wall structure, and effectively reduces the section area and the engineering quantity of the retaining wall; and thirdly, the provided calculation method is clear in principle, scientific, reasonable, practical and easy to implement, and can guide the integrated structural design and construction of the white-to-black road surface of the existing road block stone retaining wall so as to save cost and improve safety quality performance. Therefore, the utility model relates to a simple structure, economy are suitable for, safe and reliable, energy saving and emission reduction, dynamic self-stress balance's existing road bed block stone retaining wall's white change black road surface integral structure, can better energy saving and resources are protected to reflect green energy-saving road engineering construction theory, it combines corresponding construction method, still has higher economic benefits, energy saving and emission reduction benefit and social.

Drawings

Fig. 1 is a schematic view of the structure elevation of the present invention.

Fig. 2 is a plan view of the arrangement of the wire mesh and the reinforcing mesh of fig. 1.

FIG. 3 is a road surface automobile load deflection diagram.

Fig. 4 is a diagram of calculation of the stress of the steel wire mesh.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in fig. 1 to 4, the retaining wall 1, the drainage pipe 11, the fill 2, the base layer 3, the surface layer 4, the deflection curve 41, the steel wire mesh 5, the distributed steel bars 51, the steel wire mesh deformation curve 52, the steel bar mesh 6, the anchoring steel bars 61, and the protective layer 7.

The white-to-black road surface integrated structure of the existing road block stone retaining wall comprises the retaining wall 1, a drain pipe 11, a filling 2 and a raw cement concrete road surface of an original road foundation, wherein the raw cement concrete road surface forms a base layer 3 after being subjected to resonance rubblization, and a steel wire mesh 5 and a surface layer 4 are sequentially laid on the base layer.

The outside and the top of the retaining wall 1 are provided with reinforcing mesh 6 fixed by anchoring reinforcing bars 61, and the reinforcing mesh and the steel mesh 5 on the base layer 3 are connected with each other and sprayed with cement concrete to form an integrated structure.

Retaining wall 1 for waiting to reform transform the mountain road subgrade piece masonry protective structure who promotes, through years's use, generally satisfy the service function, nevertheless there is the weathering disease retaining wall 1's the surface that exposes, so need be consolidated with reinforcing bar net 6 and spray cement concrete.

The drainage pipe 11 is an original roadbed drainage facility, generally meets the use function, when the retaining wall 1 is reinforced by the reinforcing mesh 6 and the sprayed cement concrete, the retaining wall needs to be lengthened to discharge accumulated water, and the filling part 2 is a filling part of the original roadbed and generally meets the use function.

The base layer 3 is formed by crushing a raw cement concrete pavement through a resonance crusher, and because the raw cement concrete pavement has a plurality of diseases, high-frequency low-amplitude vibration energy is transmitted into a cement plate to be crushed through a crushing hammer head of the resonance crusher, the upper half part of the cement plate is in a granular fragment less than 10cm and is in a compact state from a relatively loose state; the lower half part of the plate is 10 cm-20 cm granular fragments which present an interlocking and occluding state, thereby reducing or avoiding reflection cracks on the asphalt concrete surface layer when the transformation from white to black is carried out, and the crushing operation of the resonance crusher needs not to damage the base layer 3, the roadbed and surrounding structural facilities.

The surface layer 4 is made of asphalt concrete, namely, a white original cement concrete pavement is reformed into a black asphalt concrete pavement.

The steel wire mesh is a hexagonal double-twisted metal wire mesh woven by antiseptic treated steel wires through a machine, the longitudinal lap joint width of the steel wire mesh is 20-30 cm, the transverse lap joint width of the steel wire mesh is 15-20 cm, the steel wire mesh is fixed on a base layer through anchoring steel nails, the anchoring steel nails adopt M8 compression explosion threaded nails, and the anchoring point intervals of the anchoring steel nails are 90-100 cm in the longitudinal direction and 70-80 cm in the transverse direction and are arranged in a quincunx shape; in unfavorable road sections such as a curve, a steep slope and the like, the anchoring points of the steel wire mesh 5 are encrypted to be 50-60 cm in the longitudinal direction and 40-50 cm in the transverse direction, the steel wire mesh 5 needs to be flattened by a road roller before being anchored, and the steel wire mesh 5 needs to be tensioned and flattened.

Wire net 5 in weave into many distributed steel bars 51 along the vertical certain interval of basic unit, simultaneously 1 distributed steel bar 51 is also respectively woven along vertical the both sides edge of basic unit, be favorable to surface course 4's wholeness and crack control nature, this distributed steel bar 51 is ordinary hot rolling round steel bar, be the distance of 1 or 2 hexagon meshes along the vertical interval of basic unit, distributed steel bar 51's diameter is greater than the steel wire diameter, 1 distributed steel bar every 2m ~ 3m disconnection and release stress that vertical each woven into is followed to basic unit both sides edge.

The reinforcing mesh 6 is a reinforcing mesh sheet formed by welding hot rolled steel bars, is used for preventing the weathering damage of the exposed surface of the retaining wall 1 and enhancing the integrity of the block stone retaining wall 1, and can be used for reinforcing the retaining wall together with sprayed cement concrete; meanwhile, the reinforcing mesh 6 is welded with the steel wire mesh 5 at the top of the retaining wall 1, so that the road surface and the retaining wall 1 are integrally stressed together, and the reinforcing mesh 6 can also adopt the steel wire mesh 5 according to actual conditions.

The anchoring reinforcing steel bars 61 are hot rolled reinforcing steel bars and are mainly used for fixing the reinforcing mesh 6 with the outer side and the top of the retaining wall 1, and the anchoring reinforcing steel bars 61 are inserted into the gaps between two blocks of stones of the retaining wall 1 or drilled holes are inserted into the blocks of stones on the outer side and the top of the retaining wall 1 and arranged in a quincunx shape.

The reinforcing mesh 6 and the steel wire mesh 5 on the base layer 3 are mutually connected and sprayed with cement concrete to form a protective layer 7 which can be used for protecting exposed surface weathering diseases of the retaining wall 1 and enhancing the integrity of the block stone retaining wall, the sprayed cement concrete protective layer is C30, the thickness is 8 cm-20 cm, the thickness of the protective layer of the reinforcing mesh is not less than 3cm, and the protective layer at the top of the retaining wall can also adopt cast-in-situ C30 cement concrete.

SaidThe surface layer 4 generates a deflection disc under the action of the load of the automobilexoyThe planar deflection curve 41 is simulated using the Logistic equation, i.e. Logistic curve equation

Equation of deflection curve

To wind aroundxoyPlane surfaceyThe shaft rotates for a circle to form a concave deflection basin, the compression deformation of the surface layer is neglected, the steel wire mesh deformation curve 52 and the surface layer 4 synchronously sink to form a Logistic deflection curve with the same shape, and the strength of the counterforce applied to the steel wire mesh settlement is the same as that of the counterforce applied to the steel wire mesh settlement according to the assumption of the Wencher foundation

Then, the following calculation formula is obtained:

formula I,

Center of steel wire mesh deflection discOContact part of steel wire mesh and surface course side at top of retaining wallAAnd the middle point between two tire sets of the standard axle load of the automobileBRespectively is

To in order toOOf originxoyEach undetermined parameter of the Logistic deflection curve equation in the plane and a related calculation formula are as follows:

in the formula

Thus, each undetermined parameter of Logistic deflection curve is obtained

；

The second formula,

Under the condition of single vehicle running, the contact part of the steel wire mesh 5 with the steel bar mesh 6 on the top of the retaining wall 1 is formed by the force balance principleATensile force and maximum deflection betweenORespectively at a tension of

In the formula

When a plurality of vehicles act simultaneously on the section of the pavement surface layer 4, the contact part of the steel wire mesh 5 with the steel bar mesh 6 at the top of the retaining wall 1 in unit widthAAnd maximum deflectionOThe tension at the point is calculated according to the superposition principle:

the formula III,

The steel wire mesh 5 at the bottom of the surface layer and the steel bar mesh 6 for reinforcing the retaining wall 1 are mutually connected at the top of the retaining wall, when a vehicle runs on the surface layer, the steel wire mesh 5 at the bottom of the surface layer 4 is settled and extended to generate tension on the top of the retaining wall 1, the tension is dynamic and disappears along with the leaving of the vehicle, the tension is increased along with the increase of the weight and the quantity of the vehicle, and the direction of the tension is opposite to the horizontal active soil pressure direction of the retaining wall 1, so that the dynamic self-stress balancing effect is realized, the stability of the retaining wall structure is enhanced, and the section area and the engineering quantity of the retaining wall 1 are effectively reduced;

the symbols in formula one, formula two and formula three are defined as:

-respectively fitting parameters of the Logistic deflection curve,

no dimension, no dimension,

；

-a standard axle-borne single-circle radius of the automobile,

；

respectively from the standard axle-loaded single-circle center of the vehicle close to one side of the retaining wall 1 to the top of the retaining wallADistance between, standard axle load single circle center of automobileOTo the middle point between two standard axle-load tyre groups of the automobileBThe distance between the two or more of (a) and (b),

；

the surface layer 4 generates a deflection plate under the action of the load of the automobile, and the deflection platexoyThe plane deflection curve (41) is simulated by using Logistic equation, and the deflection curve 41 equation is

To bend and sink the basin

Is wound with a curvexoyPlane surfaceyThe shaft rotates for a circle to form a concave deflection basin;

the strength of the standard single-circle uniform load of the automobile axle load, the strength of the dead weight of the surface layer material and the strength of the counter force applied to the settlement of the steel wire mesh 5 under the action of the standard single-circle uniform load of the automobile axle load are respectively obtained,

；

the friction coefficient between the steel wire mesh 5 and the surface layer 4 and the foundation layer 3 and the foundation reaction coefficient are respectively,

obtained by looking up data or actually measuring, and has no dimension,

；

The steel wire mesh 5 and the top of the retaining wall 1 are respectively of unit widthAThe steel wire mesh 5 with unit width is arranged at the standard axle load single circle center of the automobileOThe tension of the steel wire mesh 5 and the allowable tension of the steel wire mesh,

；

respectively at any position after the steel wire mesh 5 is settled and deformedxIncluded angle of shaft, near the top of retaining wallAIs treated withxIncluded angle of shaft, standard axle load single circle center of automobileOIs treated withxIncluded angle of axle, middle point between two tyre groups of standard axle load of carBIs treated withxThe included angle of the axes is set by the angle,

；

the friction resistance stress between the steel wire mesh 5 and the surface layer 4 and the base layer 3,

；

-carrying the single round sinking disc center by the automobile standard shaftOAt the origin of coordinatesxA shaft,yThe shaft is provided with a plurality of axial holes,

；

-the number of coefficients is,

。

in addition, a construction method of a white-to-black road surface integrated structure of the existing road block stone retaining wall mainly comprises the following steps:

step one, the integrated structural design of the white-to-black road surface of the retaining wall

Investigating and analyzing the current situation and the bearing capacity of the retaining wall of the old roadbed, detecting the deflection of the original road surface, and drawing up the thickness of cement concrete sprayed on the retaining wall of the existing roadbed rubble blocks, and selecting the specifications and the arrangement modes of a reinforcing mesh 6 and a steel wire mesh 5;

determining technical indexes of the used materials through tests;

(3) calculating the technical parameters of the integrated structure of the white-to-black road surface of the retaining wall 1 by using a formula I, a formula II and a formula III, designing a construction drawing and providing a construction scheme;

step two, retaining wall reinforcement

Carrying out measurement lofting according to a design drawing;

(2) removing 20-30 cm of the top of the existing retaining wall made of the roadbed rubbles, and cleaning a severe weathering layer of the wall face made of the roadbed rubbles;

(3) manufacturing or purchasing reinforcing steel bar meshes and detecting to be qualified, paving reinforcing steel bar meshes 6 on the outer side and the top of the retaining wall, and fixing the reinforcing steel bar meshes on the outer side of the retaining wall 1 and the top of the retaining wall after 20-30 cm removal by using anchoring reinforcing steel bars 61;

(4) preparing a sprayed cement concrete mixture, and passing the test;

(5) when a cement concrete protective layer is sprayed on the retaining wall, firstly, block stone gaps of the retaining wall 1 are sprayed, the cement concrete sprayed at the gaps is inserted and tamped by a hand tool to be filled compactly, and then the whole wall surface is sprayed, wherein the cement concrete is sprayed or poured after a reinforcing mesh 6 and a steel wire mesh 5 are left at the top of the retaining wall;

step three, base construction after resonance rubblization of original cement concrete pavement

Firstly, carrying out plate replacement treatment on the original cement concrete plate which is seriously broken and damaged, and carrying out resonance crushing when the strength of the cement concrete plate to be replaced and paved again reaches over 75 percent of the designed strength; carrying out resonance rubblizing treatment on the original cement concrete plate needing plate replacement treatment and the original cement concrete plate not needing plate replacement treatment, wherein the cement concrete pavement after resonance breaking is used as a base layer 3 of a surface layer 4;

(2) before construction, lofting is carried out on the resonant operation paths, and adjacent crushing paths are closely connected;

the resonance crushing is carried out to-and-fro crushing according to a path parallel to the road trend, the crushing is not inclined, the vibration is not leaked, the crushing is repeated, the crushing is overlapped, and a section of test road section is arranged for carrying out the resonance test to obtain related data;

according to the technological parameters determined in the test section, the construction technological parameters are reasonably finely adjusted by combining the difference of the road surface conditions of the construction road section, and the crushing effect is ensured to meet the crushing quality requirement of the crushed stone layer;

the crushed stone layer is sprayed with water and rolled with the water spraying amount of 1kg/m ² ～3kg/m ² (ii) a Rolling the crushed stone layer according to three stages of initial pressing, secondary pressing and final pressing, wherein rolling equipment adopts a steel wheel roller, a steel wheel vibration roller or a tire roller, the rolling is performed in sequence from roadside to middle and from low to high, when in rolling, the adjacent rolling belts are overlapped by not less than 1/3 of the width of the rolling wheel, and the technical indexes of flatness, compactness and the like are detected to be qualified;

the crushed gravel layer after resonance is continuously constructed, the exposure time of the gravel layer is not more than 3d, and the gravel layer does not open traffic;

step four, laying steel wire mesh

After being conveyed to the field, the steel wire mesh 5 is hoisted by a machine, lightly lifted and lightly placed, and is well protected, so that the mesh surface of the steel wire mesh is prevented from being damaged due to manual throwing or vehicle rolling and the like;

(2) the net surface of the steel wire net 5 is completely unfolded and manually adjusted to a correct position, and each frame is lapped according to the specification;

before the steel wire mesh 5 is laid and is not fixed, rolling for 1 to 2 times by using a rubber-tyred roller; after the synchronous gravel sealing layer is paved, rolling for 1-2 times by using a rubber-tyred roller again;

the net surface of the steel wire net 5 adopts M8 pressure explosion screw nails as anchoring steel nails which are fixed by equipment such as a small impact drill, and the density of the anchoring steel nails is not less than 1/M ² The positions of the net surface fixing end, the sharp bending section and the wheel track belt of the paver are properly encrypted to ensure that the net surface fixing end, the sharp bending section and the wheel track belt are tightly attached to the road surface;

after the reinforcing mesh 5 is laid and checked to be qualified, synchronous gravel lower seal layer construction is carried out;

the SBS modified asphalt for the synchronous chip seal has the dosage of 1.8g/m ² ～2.0kg/m ² The amount of the aggregate spread is 13kg/m ² ～15kg/m ² The maximum grain size of the synchronous gravel seal graded aggregate is not more than 19mm;

step five, asphalt concrete construction

The materials of the asphalt mixture meet the design requirements, sampling inspection is carried out in the mixing operation to verify that the composition and the mixing ratio of the asphalt mixture subjected to sampling inspection meet the design requirements;

(2) the synchronous broken stone seal layer is cleaned by adopting equipment such as a road sweeper, a powerful blower and the like, so that the surface is kept clean, dry and flat;

the hot asphalt mixture is paved and rolled along the direction of the overlapped upper layer net and the lower layer net, and the construction process and the quality are ensured to meet the relevant standards and design requirements.

The embodiments of the present invention are only used for illustration and not for limiting the scope of the present invention. It should also be understood that various changes and modifications of the present invention may be effected by those skilled in the art after reading the teachings herein, and such equivalents are intended to be within the scope of the appended claims.

Claims (8)

1. A white-to-black road surface integrated structure of an existing road bed block stone retaining wall comprises the retaining wall (1) of an original road bed, a drain pipe (11), a filling (2) and a raw cement concrete road surface, and is characterized in that the raw cement concrete road surface is subjected to resonance rubblization to form a base layer (3), and a steel wire mesh (5) and a surface layer (4) are sequentially laid on the base layer; and reinforcing meshes (6) fixed by anchoring reinforcing bars (61) are arranged on the outer sides and the tops of the retaining walls (1), and the reinforcing meshes and steel wire meshes (5) on the base layer (3) are connected with each other and sprayed with cement concrete to form an integrated structure.

2. The integrated structure of white-to-black road surface of existing retaining wall of roadbed blocks as claimed in claim 1, wherein the reinforcing mesh (6) and the steel mesh (5) on the base layer (3) are connected with each other and sprayed with cement concrete to form a protective layer (7), the thickness of the protective layer (7) is 8 cm-20 cm, the thickness of the protective layer of the reinforcing mesh (6) is not less than 3cm, and the protective layer on top of the retaining wall (1) is also cast-in-place C30 cement concrete.

3. The integrated structure of white-to-black road surface of existing road block stone retaining wall according to claim 2, wherein the reinforcing mesh (6) is a reinforcing mesh sheet formed by welding hot rolled reinforcing bars; the reinforcing mesh (6) and the steel mesh (5) on the top of the retaining wall (1) are welded into a whole, and the protective layer (7) and the surface layer (4) form an integrated structure to bear force together.

4. The integrated structure of white-to-black road surface of existing road block stone retaining wall according to claim 1, characterized in that the anchoring reinforcing bars (61) are hot rolled reinforcing bars; the reinforcing mesh (6) is fixed with the outer side and the top of the retaining wall (1) through anchoring reinforcing steel bars (61), and the anchoring reinforcing steel bars are inserted into block stone gaps of the retaining wall (1) or drilled holes are inserted into block stones of the retaining wall (1) and arranged in a quincunx shape.

5. The integrated structure of white-to-black road surface of existing road block stone retaining wall according to claim 1, characterized in that the steel wire mesh (5) is a hexagonal double-twisted metal mesh woven by antiseptic treated steel wires through a machine, the steel wire mesh (5) has a longitudinal lap width of 20cm to 30cm and a transverse lap width of 15cm to 20cm; a plurality of distributed reinforcing steel bars (51) are woven into the steel wire mesh (5) at certain intervals along the longitudinal direction of the base layer, and simultaneously, 1 distributed reinforcing steel bar (51) is respectively woven into the two side edges of the base layer along the longitudinal direction; the steel wire mesh (5) is fixed on the base layer through anchoring steel nails, and the anchoring points of the anchoring steel nails are longitudinally 90-100 cm or 50-60 cm and transversely 70-80 cm or 40-50 cm and are arranged in a quincunx shape.

6. The integrated structure of white to black road surface of an existing road bed block stone retaining wall according to claim 5, wherein the distributed reinforcing bars (51) are general hot rolled round reinforcing bars, the interval in the longitudinal direction of the base layer is 1 or 2 hexagonal meshes, and the 1 distributed reinforcing bars (51) respectively woven in the edges of both sides of the base layer in the longitudinal direction are broken every 2m to 3m and stress is released.

7. The integrated structure of white-to-black road surface of the existing retaining wall of road blocks according to claim 1, characterized in that the retaining wall (1) is a protective structure of the mountain road block and stone blocks to be improved; the surface layer (4) is a modified black asphalt concrete pavement.

8. The integrated structure of white-to-black road surface of an existing roadbed blockstone retaining wall according to claim 1, wherein the base layer (3) is formed by crushing a raw cement concrete road surface by a resonance crusher, and the upper half part of the base layer is made into compact granular fragments smaller than 10cm, and the lower half part of the base layer is made into interlocking and engaging granular fragments of 10 cm-20 cm.

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