CN114592400B - Structure and implementation method for enhancing drainage capacity of pavement by using mobile ridge for zero-slope road section - Google Patents
Structure and implementation method for enhancing drainage capacity of pavement by using mobile ridge for zero-slope road section Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C1/00—Design or layout of roads, e.g. for noise abatement, for gas absorption
- E01C1/002—Design or lay-out of roads, e.g. street systems, cross-sections ; Design for noise abatement, e.g. sunken road
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A30/60—Planning or developing urban green infrastructure
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Abstract
The invention discloses a structure and an implementation method for enhancing drainage capacity of a mobile ridge for a zero-slope road section, which mainly designs two mobile ridge structures for the zero-slope road section and the zero-cross-slope road section or the cross-slope road section and the cross-slope road section with smaller cross-slope road section, namely: the road section with zero longitudinal slope adopts a W-shaped ridge-valley road surface structure; the road surface structure of the reverse V-shaped ridge-valley is adopted on the zero cross slope road section or the road section with smaller cross slope and longitudinal slope. The invention can be applied to the structural design and construction of the permeable pavement or the impermeable pavement of the zero-slope road section, and the 'ridge-valley' structure is arranged on one or a plurality of structural layers of the pavement, so that the composite gradient of the original design is increased, the better drainage effect is realized, the road surface can be timely discharged when the zero-slope road section in the plain area concentrates rainfall, and the drainage capacity of the permeable pavement can be effectively enhanced. The invention has the characteristics of simple design and convenient construction, and can effectively solve the problem that the water on the road surface of the zero slope road section is difficult to drain.
Description
Technical Field
The invention belongs to the technical field of permeable pavement structures, and particularly relates to a structure and an implementation method for enhancing drainage capacity by using a mobile ridge for a zero-slope road section.
Background
In recent years, the technology for managing and controlling rainwater by the construction of high-grade highways in China is more and more mature, and permeable pavement is more and more popularized and applied. However, in the regions of rainy days in the south plains, extreme weather such as typhoons and storm rain often occurs, the rainfall exceeds the average level greatly, and the roads in the plains have a plurality of paths to form road sections with smaller gradient, so that the drainage of concentrated rainfall is very unfavorable, and the driving safety is greatly influenced.
In the design of the permeable pavement, reasonable infiltration and drainage of surface rainwater are important working modes, however, the design of the permeable pavement structure combination in the current specification of the design specification of highway drainage only provides requirements on the thickness, structure combination, drainage auxiliary facilities and the like of layers such as a drainage pavement layer, a base layer and a subbase layer, and the design requirement of the pavement structure aiming at a zero slope road section is not provided. A large number of road surface damage investigation results show that the road surface rainwater can not be discharged in time due to the fact that the synthetic gradient of the zero-slope road section is too small, long-term accumulated water permeates through road surface pores, water damage diseases are generated under the action of running load, and the road surface is cracked. Therefore, how to improve the drainage capacity of the zero-slope road section is a problem to be solved in the drainage design of the special road section of the current highway, especially in the permeable asphalt road surface, road surface water permeates into the middle surface layer through the permeable asphalt upper surface layer, and the situation that accumulated water permeates into the road surface and cannot be timely drained is caused in the zero-slope road section, so that the occurrence of water damage is promoted, and negative effects are caused.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art and provides a structure and an implementation method for enhancing drainage capacity by using a mobile ridge for a zero-slope road section. The structure and the implementation method of the invention can be applied to the structural design and construction of the permeable pavement or the impermeable pavement of the zero-slope road section, and the ridge-valley structure is arranged on one or a plurality of structural layers of the pavement, so that the composite gradient of the original design is increased, the better drainage effect is realized, the road surface can be timely discharged when the zero-slope road section in the plain area concentrates rainfall, and the drainage capacity of the permeable pavement can be effectively enhanced. The invention has the characteristics of simple design and convenient construction, can obviously improve the drainage efficiency of the permeable or impermeable pavement, has good economical efficiency, and can effectively solve the problems of accumulated water on the pavement of a zero-slope road section and difficult drainage of interlayer water.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a structure for enhancing drainage capacity of a mobile ridge for a zero-slope road section is characterized in that two mobile ridge structures are designed for a zero-longitudinal-slope road section and a zero-transverse-slope road section or a transverse-longitudinal-slope road section with smaller road sections, namely: the road section with zero longitudinal slope adopts a W-shaped ridge-valley road surface structure; the road surface structure of the reverse V-shaped ridge-valley is adopted on the zero-cross slope road section or the road section with smaller cross slope and longitudinal slope;
the W-shaped road ridge-road valley pavement structure comprises a first slope surface, a second slope surface, a third slope surface and a fourth slope surface; the first slope surface and the third slope surface are in a downhill direction, and the second slope surface and the fourth slope surface are in an uphill direction;
the inverted V-shaped road ridge-road valley pavement structure comprises a first road ridge line, a first lower slope surface corresponding to the first road ridge line, an opposite pavement edge corresponding to a first road ridge line end point, an upper slope surface corresponding to a second road ridge line, a lower slope surface corresponding to the second road ridge line, an opposite pavement edge corresponding to the second road ridge line end point, an upper slope surface corresponding to a third road ridge line, a lower slope surface corresponding to the third road ridge line, an opposite pavement edge corresponding to the third road ridge line end point, an upper slope surface corresponding to the end road ridge line and an end road ridge line.
The invention further describes that in the W-shaped ridge-valley pavement structure, a road Gu is formed between the first slope surface and the second slope surface, a ridge is formed between the second slope surface and the third slope surface, and a road Gu is formed between the third slope surface and the fourth slope surface (8), wherein the ridge line and the valley line are perpendicular to the driving direction.
The invention further describes that the W-shaped ridge-valley pavement structure is of a W shape along the longitudinal direction, and is provided with a lower layer, a middle surface layer and an upper layer which are sequentially laid on the original roadbed along the longitudinal direction, and the transverse slope is kept unchanged; the upper layer is a permeable asphalt concrete surface layer or a impermeable asphalt concrete surface layer; the middle surface layer and the lower surface layer are both waterproof asphalt concrete surface layers.
The invention further discloses that the ridge-valley structure of the W-shaped ridge-valley pavement structure is arranged on the upper layer, the middle layer and the lower layer, or the upper layer and the middle layer, or the upper layer is controlled by the elevation of the top surface of the structural layer.
The invention further describes that the W-shaped ridge-valley road surface structure is suitable for road surface structure adjustment of a zero longitudinal slope road section, and the length and the number between ridge lines and valley lines can be adjusted according to the length of the zero longitudinal slope road section.
In the invention, in the inverted V-shaped ridge-valley road surface structure, each ridge line is positioned at an oblique diagonal line along the driving direction, the end point of the previous ridge line is used as the starting point of the next ridge line, and the directions of the upward slope and the downward slope are perpendicular to the direction of the ridge line.
Further, the first road ridge line is provided with a first lower slope surface along the driving direction, each subsequent road ridge line corresponds to the respective upper slope surface and lower slope surface, the lower slope surface of the previous road ridge line is connected with the upper slope surface of the subsequent road ridge line, and the terminal road ridge line is provided with a terminal upper slope surface.
The invention further describes that two sides of the first road ridge line are respectively an original road surface and a first lower slope surface corresponding to the first road ridge line, and two sides of the tail end road ridge line are respectively an upper slope surface corresponding to the tail end road ridge line and the original road surface; the road valley is formed between a first lower slope surface corresponding to the first road ridge line and an upper slope surface corresponding to the second road ridge line, the road valley is formed between a lower slope surface corresponding to the second road ridge line and an upper slope surface corresponding to the third road ridge line, and then the road valley is sequentially formed between the lower slope surface and the upper slope surface of two adjacent road ridge lines.
The invention further discloses that the inverted V-shaped ridge-valley pavement structure is inverted V-shaped along the longitudinal diagonal direction and comprises a lower layer, a middle layer and an upper layer which are sequentially paved on an original roadbed along the longitudinal direction; the upper layer is a permeable asphalt concrete surface layer or a impermeable asphalt concrete surface layer; the middle surface layer and the lower surface layer are both waterproof asphalt concrete surface layers.
The invention further discloses that the ridge-valley structure of the inverted V-shaped ridge-valley pavement structure is arranged on the upper layer, the middle layer and the lower layer, or the upper layer and the middle layer, or the upper layer is controlled by the elevation of the top surface of the structural layer.
The invention further discloses that the inverted V-shaped ridge-valley road surface structure is suitable for adjusting the road surface structure of a road section with a smaller cross slope or a smaller cross slope and a smaller longitudinal slope, and the length and the number of the ridge lines can be adjusted according to the length of the road section with the smaller cross slope or the smaller cross slope and the smaller longitudinal slope.
The invention also provides an implementation method of the structure for enhancing the drainage capacity of the mobile ridge for the zero-slope road section, which comprises the following steps of:
the implementation method of the W-shaped ridge-valley pavement structure comprises the following steps:
1) Determining the longitudinal horizontal lengths of the first slope surface, the second slope surface, the third slope surface and the fourth slope surface according to the length of the zero slope section and the original longitudinal section design;
2) Keeping the designed elevation of the first slope starting point, the third slope starting point and the fourth slope ending point unchanged, and calculating and determining the designed elevation of the first slope ending point and the third slope ending point according to the designed slope of each slope;
3) When the ridge-valley structure is arranged on the upper layer, the middle layer and the lower layer, keeping the thicknesses of the upper layer and the middle layer to be the same as the original pavement design, calculating the thickness of the lower layer according to the new design elevation, and adjusting the thickness of the lower layer to meet the design elevation after the gradient adjustment;
when the ridge-valley structure is arranged on the upper surface layer and the middle surface layer, the thickness of the upper surface layer is kept the same as the original pavement design, and the requirement of the design elevation of the W-shaped ridge-valley pavement structure is met by adjusting the thickness of the middle surface layer;
when the ridge-valley structure is arranged on the upper layer, the thickness of the upper layer is adjusted to meet the requirement of the design elevation of the W-shaped ridge-valley pavement structure;
4) The W-shaped ridge-valley road surface structure is controlled by the designed elevation, and the transverse slope is unchanged, so that the asphalt concrete paving construction steps of each structural layer are consistent with the original road surface construction method, the elevation is adjusted, and each structural layer is paved layer by layer;
the implementation method of the inverted V-shaped ridge-valley pavement structure comprises the following steps:
1) According to the length of the zero slope road section and the original transverse and longitudinal section design, determining the length of the road section corresponding to each road ridge line and the number of the road ridge lines to be set;
2) Maintaining the design elevation of the road ridge line position unchanged, reducing the design elevation at the opposite road surface edge of each road ridge line end point according to gradient requirements to form an inclined gradient perpendicular to the road ridge line, and keeping the design elevation at the opposite road surface edge corresponding to the end road ridge line end point unchanged;
3) When the ridge-valley structure is arranged on the upper layer, the middle layer and the lower layer, keeping the thicknesses of the upper layer and the middle layer to be the same as the original pavement design, calculating the thickness of the lower layer according to the new design elevation, and adjusting the thickness of the lower layer to meet the design elevation after the gradient adjustment;
when the ridge-valley structure is arranged on the upper surface layer and the middle surface layer, the thickness of the upper surface layer is kept to be the same as the original pavement design, the thickness of the middle surface layer is calculated according to the new design elevation, and the design elevation after gradient adjustment is met by adjusting the thickness of the middle surface layer;
when the road ridge-road valley structure is arranged on the upper layer, calculating the thickness of the upper layer according to the new design elevation, and adjusting the thickness of the upper layer to meet the design elevation after gradient adjustment;
4) The structure of the inverted V-shaped road ridge-road valley pavement is controlled by designing elevation, so that the asphalt concrete paving construction steps of each structural layer are consistent with the original pavement construction method, the elevation is adjusted, and each structural layer is paved layer by layer.
The invention has the advantages that:
(1) The economy is good. The gradient is adjusted only by changing the thickness of the original surface layer on the zero-slope road section, the change range is not large, and the increased manufacturing cost is not great.
(2) The construction is simple and convenient. The gradient change is adjusted by controlling the designed elevation, and only the controlled elevation is required to be changed during pavement construction, so that additional construction means are not required.
(3) The water drainage effect is obvious. The structure of the zero slope section is changed, the manufacturing gradient is beneficial to the rapid drainage of road surface water or interlayer water, and the water damage caused by water seepage and retention is avoided.
Drawings
Fig. 1 is a schematic view of a longitudinal slope of a zero-longitudinal-slope road section using a "W-ridge-valley" road surface structure according to an embodiment of the present invention.
The marks in the figures represent: 1. a first slope starting point; 2. a first slope; 3. first ramp end point (i.e., path Gu); 4. a second slope; 5. a second slope end point (i.e., road ridge); 6. a third slope; 7. third ramp end point (i.e., path Gu); 8. a fourth ramp; 9. fourth slope end point.
Fig. 2 is a schematic design diagram of a zero-cross-slope road section adopting an inverted V-shaped ridge-valley road surface structure according to another embodiment of the present invention.
The marks in the figures represent: 201. a first ridge line; 202. a first lower slope corresponding to the first ridge line; 203. the opposite pavement edge corresponding to the first ridge line end point; 204. an upper slope corresponding to the second ridge line; 205. a second ridge line; 206. a slope corresponding to the second ridge line; 207. the second ridge line end point corresponds to the opposite pavement edge; 208. an upper slope corresponding to the third ridge line; 209. a third ridgeline; 210. a lower slope corresponding to the third ridge line; 211. the edge of the opposite pavement corresponding to the third ridge line end point; 212. an upper slope corresponding to the ridge line of the tail end road; 213. a terminal road ridge; the arrow direction in the figure is the drainage direction.
Detailed Description
The invention will be further described with reference to the drawings and specific examples.
Example 1:
a structure for enhancing drainage capacity of a mobile ridge for a zero-slope road section mainly aims at designing two mobile ridge structures for the zero-slope road section and the zero-cross-slope road section or the cross-slope road section and the cross-slope road section with smaller cross-slope road section, namely: the road section with zero longitudinal slope adopts a W-shaped ridge-valley road surface structure; the road surface structure of the reverse V-shaped ridge-valley is adopted on the zero cross slope road section or the road section with smaller cross slope and longitudinal slope.
As shown in fig. 1, the W-shaped ridge-valley pavement structure comprises a first slope surface 2, a second slope surface 4, a third slope surface 6 and a fourth slope surface 8; the first slope surface 2 and the third slope surface 6 are in a downhill direction, and the second slope surface 4 and the fourth slope surface 8 are in an uphill direction; the road valley I3 is formed between the first slope surface 2 and the second slope surface 4, the road ridge 5 is formed between the second slope surface 4 and the third slope surface 6, and the road Gu 7 is formed between the third slope surface 6 and the fourth slope surface 8, wherein the road ridge line and the road valley line are perpendicular to the driving direction.
The W-shaped ridge-valley pavement structure is longitudinally W-shaped, and is longitudinally provided with a lower layer, a middle layer and an upper layer which are sequentially laid on the original roadbed, and the transverse slope is kept unchanged; the upper layer is a permeable asphalt concrete surface layer or a impermeable asphalt concrete surface layer; the middle surface layer and the lower surface layer are both waterproof asphalt concrete surface layers. The ridge-valley structure of the W-shaped ridge-valley pavement structure is arranged on the upper, middle and lower layers, or on the upper and middle layers, or on the upper layer, and is controlled by the elevation of the top surface of the structural layer.
The W-shaped ridge-valley road surface structure is suitable for road surface structure adjustment of a zero longitudinal slope road section, and the length and the number between ridge lines and valley lines can be adjusted according to the length of the zero longitudinal slope road section.
The implementation method of the W-shaped ridge-valley pavement structure comprises the following steps:
1) Determining the longitudinal horizontal lengths of the first slope surface (2), the second slope surface (4), the third slope surface (6) and the fourth slope surface (8) and the gradients of the slope surfaces according to the length of the zero slope section and the original longitudinal section design;
2) Keeping the design elevation of the first slope starting point (1), the third slope starting point (5) and the fourth slope ending point (9) unchanged, and calculating and determining the design elevation of the first slope ending point (3) and the third slope ending point (7) according to the design slope of each slope;
3) When the ridge-valley structure is arranged on the upper layer, the middle layer and the lower layer, keeping the thicknesses of the upper layer and the middle layer to be the same as the original pavement design, calculating the thickness of the lower layer according to the new design elevation, and adjusting the thickness of the lower layer to meet the design elevation after the gradient adjustment;
when the ridge-valley structure is arranged on the upper surface layer and the middle surface layer, the thickness of the upper surface layer is kept the same as the original pavement design, and the requirement of the design elevation of the W-shaped ridge-valley pavement structure is met by adjusting the thickness of the middle surface layer;
when the ridge-valley structure is arranged on the upper layer, the thickness of the upper layer is adjusted to meet the requirement of the design elevation of the W-shaped ridge-valley pavement structure;
4) The W-shaped ridge-valley road surface structure is controlled by the designed elevation, and the transverse slope is unchanged, so that the asphalt concrete paving construction steps of each structural layer are consistent with the original road surface construction method, the elevation is adjusted, and each structural layer is paved layer by layer;
as shown in fig. 2, the "inverted V-shaped ridge-valley" pavement structure includes a first ridge line 201, a first downhill surface 202 corresponding to the first ridge line, an opposite pavement edge 203 corresponding to a first ridge line end point, an upward surface 204 corresponding to a second ridge line, a second ridge line 205, a downhill surface 206 corresponding to a second ridge line end point, an opposite pavement edge 207 corresponding to a second ridge line end point, an upward surface 208 corresponding to a third ridge line, a third ridge line 209, a downward surface 210 corresponding to a third ridge line, an opposite pavement edge 211 corresponding to a third ridge line end point, an upward surface 212 corresponding to a terminal ridge line, and a terminal ridge line 213.
In the inverted V-shaped ridge-valley pavement structure, each ridge line is positioned at an oblique diagonal line along the driving direction, the end point of the previous ridge line is used as the starting point of the next ridge line, and the directions of the upper slope surface and the lower slope surface are perpendicular to the direction of the ridge line.
The two sides of the first ridge line 201 are respectively an original road surface and a first lower slope surface 202 corresponding to the first ridge line, and the two sides of the tail end ridge line 213 are respectively an upper slope surface 212 corresponding to the tail end ridge line and the original road surface; a valley is formed between the first lower slope 202 corresponding to the first ridge line and the upper slope 204 corresponding to the second ridge line, a valley is formed between the lower slope 206 corresponding to the second ridge line and the upper slope 208 corresponding to the third ridge line, and then a valley is sequentially formed between the lower slope and the upper slope of two adjacent ridge lines.
The inverted V-shaped ridge-valley pavement structure is inverted V-shaped along the longitudinal diagonal direction and comprises a lower layer, a middle surface layer and an upper layer which are sequentially paved on an original roadbed along the longitudinal direction; the upper layer is a permeable asphalt concrete surface layer or a impermeable asphalt concrete surface layer; the middle surface layer and the lower surface layer are both waterproof asphalt concrete surface layers. The ridge-valley structure of the inverted V-shaped ridge-valley pavement structure is arranged on the upper, middle and lower layers, or on the upper and middle layers, or on the upper layer, and is controlled by the elevation of the top surface of the structural layer.
The reverse V-shaped ridge-valley road surface structure is suitable for the road surface structure adjustment of the road sections with smaller cross slopes or longitudinal slopes, and the length and the number of the ridge lines can be adjusted according to the length of the road sections with smaller cross slopes or longitudinal slopes.
The implementation method of the inverted V-shaped ridge-valley pavement structure comprises the following steps:
1) According to the length of the zero slope road section and the original transverse and longitudinal section design, determining the length of the road section corresponding to each road ridge line and the number of the road ridge lines to be set;
2) Maintaining the design elevation of the road ridge line position unchanged, reducing the design elevation at the opposite road surface edge of each road ridge line end point according to gradient requirements to form an inclined gradient perpendicular to the road ridge line, and keeping the design elevation at the opposite road surface edge corresponding to the end road ridge line end point unchanged;
3) When the ridge-valley structure is arranged on the upper layer, the middle layer and the lower layer, keeping the thicknesses of the upper layer and the middle layer to be the same as the original pavement design, calculating the thickness of the lower layer according to the new design elevation, and adjusting the thickness of the lower layer to meet the design elevation after the gradient adjustment;
when the ridge-valley structure is arranged on the upper surface layer and the middle surface layer, the thickness of the upper surface layer is kept to be the same as the original pavement design, the thickness of the middle surface layer is calculated according to the new design elevation, and the design elevation after gradient adjustment is met by adjusting the thickness of the middle surface layer;
when the road ridge-road valley structure is arranged on the upper layer, calculating the thickness of the upper layer according to the new design elevation, and adjusting the thickness of the upper layer to meet the design elevation after gradient adjustment;
4) The structure of the inverted V-shaped road ridge-road valley pavement is controlled by designing elevation, so that the asphalt concrete paving construction steps of each structural layer are consistent with the original pavement construction method, the elevation is adjusted, and each structural layer is paved layer by layer.
Application example 1:
referring to fig. 1, a schematic diagram of elevation of a vertical section of a W-shaped pavement structure for enhancing drainage capacity by using a movable ridge on a zero longitudinal slope section is provided, wherein the elevation of the vertical section of the W-shaped pavement structure comprises a first slope surface 2, a second slope surface 4, a third slope surface 6, a fourth slope surface 8, a road Gu, a ridge 5 and a road Gu 7, a first slope surface starting point 1 is connected with a vertical section design of an original pavement, and a fourth slope surface ending point 9 is connected with the vertical section design of the original pavement.
The specific parameter setting process is as follows: the specific position of the zero longitudinal slope section is determined, four continuous slope surfaces are selected according to the principle of 100m intervals, the design elevation of the first slope surface starting point 1, the road ridge 5 and the fourth slope surface end point 9 is guaranteed to be unchanged, the design elevation of the road Gu and the road Gu 7 is reduced, a longitudinal W-shaped road surface structure is formed, the W-shaped road ridge-road valley structure in the example is arranged on the upper layer, the middle layer and the lower layer, the thickness of the upper layer and the middle layer is unchanged, and the thickness of the lower layer is calculated according to the design elevation after slope change.
In the example, after the design elevation of the W-shaped pavement structure of the zero slope section and the thickness of the lower layer are determined, the zero slope section and the pavement of the connected section are constructed together, the measured elevation is controlled according to the design elevation of the new structure, and finally, the steel wire line is pulled to be directly paved and compacted in a layered manner.
After the rainfall occurs, the rainwater is converged towards the road valley under the action of the longitudinal gradient, and is discharged towards the road shoulder drainage ditch in combination with the transverse gradient of the original road surface, so that the drainage performance of the zero-slope road section is enhanced, and the road surface structure is convenient to construct and has lower cost.
According to the invention, the number of the slopes can be adjusted according to the length of the zero slope section, and according to the practical experience of the applicant, the number of the slopes is increased to 6, and then the number of the slopes has a certain influence on the travelling comfort, so that 4 drainage slopes are reasonable, and the longitudinal horizontal length and the gradient of each slope can be adjusted by considering the length of the zero slope section.
Application example 2:
referring to fig. 2, a schematic diagram of an inverted V-shaped pavement structure for enhancing drainage capacity by using a mobile ridge on a zero-cross slope section is provided, which comprises a first ridge line 1, a first lower slope surface 2 corresponding to the first ridge line, an opposite pavement edge 3 corresponding to a first ridge line end point, an upper slope surface 4 corresponding to a second ridge line, a second ridge line 5, a lower slope surface 6 corresponding to the second ridge line, an opposite pavement edge 7 corresponding to a second ridge line end point, an upper slope surface 8 corresponding to a third ridge line, a third ridge line 9, a lower slope surface 10 corresponding to the third ridge line, an opposite pavement edge 11 corresponding to a third ridge line end point, an upper slope surface 12 corresponding to a terminal ridge line, and a terminal ridge line 13. The outer sides of the first road ridge lines and the outer sides of the tail road ridge lines are directly connected with the original road surface.
The specific parameter setting process is that the specific position of a zero-cross slope road section is determined, the road section length of each road ridge line is set according to 100m, the design elevation of the starting point and the ending point of a first road ridge line 1, a second road ridge line 5, a third road ridge line 9 and a tail end road ridge line 13 is guaranteed to be unchanged, the design elevation of the opposite road surface edge 3 corresponding to the ending point of the first road ridge line, the design elevation of the opposite road surface edge 7 corresponding to the ending point of the second road ridge line and the design elevation of the opposite road surface edge 11 corresponding to the ending point of the third road ridge line are reduced, and the road surface structure with the inverted V shape on two sides of each road ridge line is formed.
In the example, after the design elevation of the structure of the inverted V-shaped pavement of the zero slope section and the thickness of the lower layer are determined, the zero slope section and the pavement of the connected section are constructed together, the measured elevation is controlled according to the design elevation of the new structure, and finally, the steel wire line is pulled to be directly paved and compacted in a layered manner.
After the rainfall occurs, the rainwater is converged towards the road valley under the action of the inclined gradient, and because the gradient is the direction perpendicular to the ridge line of the road, part of accumulated water is discharged towards the road shoulder drainage ditch during convergence, and the rest of accumulated water is discharged at the road valley, so that the drainage performance of a zero-slope road section is enhanced, and the road surface structure is convenient to construct and has lower cost.
According to the invention, the number of the road ridge lines can be adjusted according to the length of the zero slope section, and according to the practical experience of the applicant, the number of the road ridge lines is increased to 6, and then the road ridge lines have a certain influence on the travelling comfort, so that 4 drainage slope surfaces are reasonable, and the length of the section where each road ridge line is located and the road valley slope degree can be adjusted by considering the length of the zero slope section.
It is to be understood that the above-described embodiments are merely illustrative of the invention and are not intended to limit the practice of the invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art; it is not necessary here nor is it exhaustive of all embodiments; and obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (9)
1. A structure for enhancing drainage capacity of a mobile ridge for a zero-slope road section mainly aims at designing two mobile ridge structures of the zero-slope road section and the zero-cross-slope road section or the cross-slope road section and the longitudinal-slope road section with smaller road sections, and is characterized in that: the road section with zero longitudinal slope adopts a W-shaped ridge-valley road surface structure; the road surface structure of the reverse V-shaped ridge-valley is adopted on the zero-cross slope road section or the road section with smaller cross slope and longitudinal slope;
the W-shaped ridge-valley pavement structure comprises a first slope (2), a second slope (4), a third slope (6) and a fourth slope (8); the first slope surface (2) and the third slope surface (6) are in a downhill direction, and the second slope surface (4) and the fourth slope surface (8) are in an uphill direction;
in the W-shaped ridge-valley pavement structure, a road Gu is formed between the first slope surface (2) and the second slope surface (4), a ridge is formed between the second slope surface (4) and the third slope surface (6), a road Gu is formed between the third slope surface (6) and the fourth slope surface (8), and the ridge line and the valley line are perpendicular to the driving direction; the W-shaped ridge-valley pavement structure is longitudinally W-shaped, and is longitudinally provided with a lower layer, a middle layer and an upper layer which are sequentially laid on the original roadbed, and the transverse slope is kept unchanged; the upper layer is a permeable asphalt concrete surface layer or a impermeable asphalt concrete surface layer; the middle surface layer and the lower surface layer are both waterproof asphalt concrete surface layers;
the inverted V-shaped road ridge-road valley pavement structure comprises a first road ridge line (201), a first lower slope surface (202) corresponding to the first road ridge line, an opposite pavement edge (203) corresponding to a first road ridge line end point, an upper slope surface (204) corresponding to a second road ridge line, a second road ridge line (205), a lower slope surface (206) corresponding to the second road ridge line, an opposite pavement edge (207) corresponding to the second road ridge line end point, an upper slope surface (208) corresponding to a third road ridge line, a third road ridge line (209), a lower slope surface (210) corresponding to the third road ridge line, an opposite pavement edge (211) corresponding to the third road ridge line end point, an upper slope surface (212) corresponding to the terminal road ridge line and a terminal road ridge line (213).
2. The structure for enhancing drainage capacity for a mobile ridge for a zero-slope road section according to claim 1, wherein: the ridge-valley structure of the W-shaped ridge-valley pavement structure is arranged on the upper, middle and lower layers, or on the upper and middle layers, or on the upper layer, and is controlled by the elevation of the top surface of the structural layer.
3. The structure for enhancing drainage capacity for a mobile ridge for a zero-slope road section according to claim 2, wherein: the W-shaped ridge-valley road surface structure is suitable for road surface structure adjustment of a zero longitudinal slope road section, and the length and the number between ridge lines and valley lines are adjusted according to the length of the zero longitudinal slope road section.
4. The structure for enhancing drainage capacity for a mobile ridge for a zero-slope road section according to claim 1, wherein: in the inverted V-shaped ridge-valley pavement structure, each ridge line is positioned at an oblique diagonal line along the driving direction, the end point of the previous ridge line is used as the starting point of the next ridge line, and the directions of the upper slope surface and the lower slope surface are perpendicular to the direction of the ridge line.
5. The structure for enhancing drainage capacity for a mobile ridge for a zero-slope road section according to claim 4, wherein: the two sides of the first road ridge line (201) are respectively provided with an original road surface and a first lower slope surface (202) corresponding to the first road ridge line, and the two sides of the tail end road ridge line (213) are respectively provided with an upper slope surface (212) corresponding to the tail end road ridge line and the original road surface; a valley is formed between a first lower slope (202) corresponding to the first ridge line and an upper slope (204) corresponding to the second ridge line, a valley is formed between a lower slope (206) corresponding to the second ridge line and an upper slope (208) corresponding to the third ridge line, and then a valley is sequentially formed between the lower slope and the upper slope of two adjacent ridge lines.
6. The structure for enhancing drainage capacity for a mobile ridge for a zero slope section according to claim 1 or 4 or 5, wherein: the inverted V-shaped ridge-valley pavement structure is inverted V-shaped along the longitudinal diagonal direction and comprises a lower layer, a middle surface layer and an upper layer which are sequentially paved on an original roadbed along the longitudinal direction; the upper layer is a permeable asphalt concrete surface layer or a impermeable asphalt concrete surface layer; the middle surface layer and the lower surface layer are both waterproof asphalt concrete surface layers.
7. The structure for enhancing drainage capacity for a mobile ridge for a zero-slope road section according to claim 6, wherein: the ridge-valley structure of the inverted V-shaped ridge-valley pavement structure is arranged on the upper, middle and lower layers, or on the upper and middle layers, or on the upper layer, and is controlled by the elevation of the top surface of the structural layer.
8. The structure for enhancing drainage capacity for a mobile ridge for a zero-slope road section according to claim 7, wherein: the reverse V-shaped ridge-valley road surface structure is suitable for the road surface structure adjustment of the road sections with smaller cross slopes or longitudinal slopes, and the length and the number of the ridge lines are adjusted according to the length of the road sections with smaller cross slopes or longitudinal slopes.
9. A method of implementing a structure for enhancing drainage capacity for a mobile ridge for a zero slope section as claimed in any one of claims 1 to 8, characterized in that:
the implementation method of the W-shaped ridge-valley pavement structure comprises the following steps:
1) Determining the longitudinal horizontal lengths of the first slope surface (2), the second slope surface (4), the third slope surface (6) and the fourth slope surface (8) and the gradients of the slope surfaces according to the length of the zero slope section and the original longitudinal section design;
2) Keeping the design elevation of the first slope starting point (1), the third slope starting point (5) and the fourth slope ending point (9) unchanged, and calculating and determining the design elevation of the first slope ending point (3) and the third slope ending point (7) according to the design slope of each slope;
3) When the ridge-valley structure is arranged on the upper layer, the middle layer and the lower layer, keeping the thicknesses of the upper layer and the middle layer to be the same as the original pavement design, calculating the thickness of the lower layer according to the new design elevation, and adjusting the thickness of the lower layer to meet the design elevation after the gradient adjustment;
when the ridge-valley structure is arranged on the upper surface layer and the middle surface layer, the thickness of the upper surface layer is kept the same as the original pavement design, and the requirement of the design elevation of the W-shaped ridge-valley pavement structure is met by adjusting the thickness of the middle surface layer;
when the ridge-valley structure is arranged on the upper layer, the thickness of the upper layer is adjusted to meet the requirement of the design elevation of the W-shaped ridge-valley pavement structure;
4) The W-shaped ridge-valley road surface structure is controlled by the designed elevation, and the transverse slope is unchanged, so that the asphalt concrete paving construction steps of each structural layer are consistent with the original road surface construction method, the elevation is adjusted, and each structural layer is paved layer by layer;
the implementation method of the inverted V-shaped ridge-valley pavement structure comprises the following steps:
1) According to the length of the zero slope road section and the original transverse and longitudinal section design, determining the length of the road section corresponding to each road ridge line and the number of the road ridge lines to be set;
2) Maintaining the design elevation of the road ridge line position unchanged, reducing the design elevation at the opposite road surface edge of each road ridge line end point according to gradient requirements to form an inclined gradient perpendicular to the road ridge line, and keeping the design elevation at the opposite road surface edge corresponding to the end road ridge line end point unchanged;
3) When the ridge-valley structure is arranged on the upper layer, the middle layer and the lower layer, keeping the thicknesses of the upper layer and the middle layer to be the same as the original pavement design, calculating the thickness of the lower layer according to the new design elevation, and adjusting the thickness of the lower layer to meet the design elevation after the gradient adjustment;
when the ridge-valley structure is arranged on the upper surface layer and the middle surface layer, the thickness of the upper surface layer is kept to be the same as the original pavement design, the thickness of the middle surface layer is calculated according to the new design elevation, and the design elevation after gradient adjustment is met by adjusting the thickness of the middle surface layer;
when the road ridge-road valley structure is arranged on the upper layer, calculating the thickness of the upper layer according to the new design elevation, and adjusting the thickness of the upper layer to meet the design elevation after gradient adjustment;
4) The structure of the inverted V-shaped road ridge-road valley pavement is controlled by designing elevation, so that the asphalt concrete paving construction steps of each structural layer are consistent with the original pavement construction method, the elevation is adjusted, and each structural layer is paved layer by layer.
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| CN111733649A (en) * | 2020-07-14 | 2020-10-02 | 长沙理工大学 | Super-wide pavement internal drainage system for expressway and determination method of permeability coefficient of super-wide pavement internal drainage system |
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Patent Citations (4)
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| JPH09217323A (en) * | 1997-01-16 | 1997-08-19 | Nippon Liner Kk | Road mark |
| CN106400649A (en) * | 2016-11-29 | 2017-02-15 | 天津大学前沿技术研究院有限公司 | Permeable clogging-preventing pavement structure |
| CN209602910U (en) * | 2019-01-18 | 2019-11-08 | 深圳市西伦土木结构有限公司 | A kind of asphalt pavement structure based on steep slope road section Heavy Duty Freight Car antiskid |
| CN111733649A (en) * | 2020-07-14 | 2020-10-02 | 长沙理工大学 | Super-wide pavement internal drainage system for expressway and determination method of permeability coefficient of super-wide pavement internal drainage system |
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