CN115354552A - Antiskid crosswalk pavement treatment structure and construction method thereof - Google Patents
Antiskid crosswalk pavement treatment structure and construction method thereof Download PDFInfo
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- CN115354552A CN115354552A CN202211158136.6A CN202211158136A CN115354552A CN 115354552 A CN115354552 A CN 115354552A CN 202211158136 A CN202211158136 A CN 202211158136A CN 115354552 A CN115354552 A CN 115354552A
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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
- E01C11/24—Methods or arrangements for preventing slipperiness or protecting against influences of the weather
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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
- E01C11/16—Reinforcements
- E01C11/18—Reinforcements for cement concrete pavings
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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
- E01C11/226—Coherent pavings
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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
- E01C7/325—Joining different layers, e.g. by adhesive layers; Intermediate layers, e.g. for the escape of water vapour, for spreading stresses
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Abstract
The invention relates to the technical field of traffic engineering, in particular to an anti-skidding crosswalk road surface treatment structure and a construction method thereof. The invention adopts the cast-in-place reinforced concrete slab, the pedestrian crossing line antiskid member and the stepped constraint member to play a role in resisting ruts for the road intersection; the longitudinal grooves can provide drainage channels and improve the anti-skid performance of the pedestrian crossing; the shear-resistant stud can resist the punching force of the travelling crane load, and the structure is guaranteed to have good overall performance.
Description
Technical Field
The invention relates to the technical field of traffic engineering, in particular to an anti-skidding crosswalk road surface disposal structure and a construction method thereof.
Background
In summer, thunderstorm rain frequently occurs, the sideslip condition of pedestrians and non-motor vehicles is caused by the wet and slippery pedestrian crossing lines, particularly, the recent municipal watering operation is frequent, and the phenomenon that traffic marking lines are wet and slippery objectively exists; the paint used by pedestrian crossing lines in partial areas has 2-3 cm of bulges on the ground, and the problem of slippery when meeting water is very common. Therefore, under the condition that the road surface is wet in rainy and snowy days or after the water spraying vehicle passes through, the traffic marking is slippery and easily causes personnel injury accidents. Meanwhile, the wheel tracks of the asphalt pavement at the road intersection sink under the repeated action of the vehicle load to form a rut phenomenon of a longitudinal strip-shaped groove, which generally becomes more and more serious along with the increase of traffic volume and the increase of the proportion of heavily loaded and overloaded vehicles. The urban road intersection area has the biggest characteristics that vehicles are frequently braked and started, traffic canalization is serious, the parking time of the vehicles is extremely long, the urban road intersection area is greatly different from other road sections in traffic conditions, road diseases are particularly obvious, and the urban road intersection area mainly comprises ruts and appears in front of and behind a stop line.
At present, the rutting of asphalt pavement is internationally divided into three categories, namely structural rutting, instability rutting and abrasive rutting. The structural rutting exceeds the strength bearing capacity of each layer of the pavement due to overlarge load, the integral structure comprising the roadbed sinks to form the structural rutting, and the rutting is easy to occur in the area with insufficient foundation bearing capacity. Instability rutting is caused by the fact that under the condition of high temperature and long-term repeated action of load, shear stress generated by the load exceeds the shear strength of a mixture, the mixture flows and deforms to form permanent rutting, and the rutting easily occurs in an area with large load or horizontal force. The wear rutting is mainly caused by the continuous action of wheel friction and natural factors to a certain extent, and the rutting is rare in China.
Aiming at the problem of skid resistance of pedestrian crossing lines in rainy days, the existing method is to use skid-resistant paint (the skid resistance is improved from the chemical perspective); adopt the high permeable pavement structure, adopt the antiskid brick that permeates water, design antiskid structure (increase the route of permeating water and improve antiskid nature from the physics angle). However, from the current installation and use conditions, the novel anti-skid paint coating is difficult to use on a large scale due to high price; the pedestrian crosswalk anti-skid or water-permeable structure does not consider the influence of actual driving action, seasons and the like, for example, the asphalt pavement bears larger horizontal force due to frequent braking and starting of vehicles in the crossing area of urban roads, so that the pavement is subjected to pushing and pulling damage to form waves, upheaval bags and cracks; the vehicle is parked for a long time due to signal control and the like; in hot summer, the asphalt pavement is easy to have unrecoverable permanent deformation, so that corresponding measures are needed to solve the problem.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an anti-skid pedestrian crossing pavement treatment structure and a construction method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a structure is dealt with to anti-skidding pedestrian crossing road surface, handles the constitutional unit including locating the single lane anti-skidding pedestrian crossing road surface on the pedestrian crossing line:
the single lane anti-skid pedestrian crossing pavement disposal structure unit comprises a base layer and a reinforced concrete plate arranged on the base layer, wherein a plurality of individual pedestrian crossing line anti-skid components are arranged in the middle of the reinforced concrete plate and are uniformly arranged at intervals, stepped restraining components are arranged on two sides of the individual pedestrian crossing line anti-skid components, shear-resistant studs are arranged on the stepped restraining components, and longitudinal grooves are formed in the surfaces of the pedestrian crossing line anti-skid components and the stepped restraining components;
a notch groove is formed between every two adjacent pedestrian crossing line anti-skid components, asphalt filler is filled in the notch groove, and the asphalt filler comprises a base layer and a surface layer arranged above the base layer;
the surface layer comprises an upper surface layer, a middle surface layer and a lower surface layer, and the upper surface layer, the middle surface layer and the lower surface layer are sequentially arranged from top to bottom;
the surface elevation of the pedestrian crossing line antiskid component and the surface elevation of the stepped constraint component are consistent with the elevation of the asphalt pavement.
The invention also provides a construction method of the antiskid pedestrian crossing pavement disposal structure, which comprises the following concrete construction steps:
s1, cast-in-place construction of a reinforced concrete slab: a reinforced concrete slab is cast in situ on the subbase layer at the crosswalk, the overall performance and rigidity of the anti-skid crosswalk pavement treatment structure are ensured, and the length L of the reinforced concrete slab on the single lane is ensured 2 Width of 7-10 m and width of single motor vehicle lane D Lane Uniform, height H 2 =100mm; firstly, a template is supported; then binding the steel bar, L Long span :L Short span <1.5 hour design according to bidirectional plate, L Long span :L Short span >1.5 times according to the design of a one-way plate, the diameter d = 8-12 mm and the distance L of the middle short span negative rib, the short span bottom rib, the long span bottom rib and the long span negative rib of the plate Distance between each other = 70-200 mm; then pre-burying single row shear-resistant studs to resist the punching force of the traffic load, wherein the single row shear-resistant studs are positioned at two sides of the pedestrian crossing line antiskid component and are arranged on the reinforced concrete slab, the height H = 100-200 mm of the shear-resistant studs, and the embedding depth H of the shear-resistant studs is H 3 Distance L between the center of the shear-resistant stud and the edge of the reinforced concrete slab, where = 1/2H-1/3H 3 ＝1/12L 1 Center-to-center spacing D between two adjacent shear-resistant studs 3 ＝D 1 +D 2 (ii) a Finally, maintaining and removing the template;
s2, carrying out cast-in-place construction on the pedestrian crossing line anti-slip component and the stepped constraint component: the anti-skid component of the pedestrian crossing line is positioned at the pedestrian crossing line, and the length L of the anti-skid component of the single pedestrian crossing line 4 Width of = 2.5-4.5 mAnd D 1 Uniform, height H 1 ＝100～170mm＝H Surface layer +H Base layer - H 2 (ii) a Distance between two adjacent pedestrian crosswalk line anti-slip members and D 2 The consistency is achieved; the step-shaped restraining members are positioned at two sides of the pedestrian crossing line antiskid member, and the length L of the single step-shaped restraining member Constraining ＝1/2L 1 Width and width of single lane D Lane Uniform, height H Constraining ＝H 1 = 100-170 mm, wherein the length L of the first step Step 1 ＝1/6L 1 Height H Step 1 ＝50～70mm＝H Upper surface layer +H Middle layer (ii) a Length L of the second step Step 2 ＝1/3L 1 Height H Step 2 ＝50～70mm＝H Upper surface layer +H Middle layer (ii) a Cast-in-place stepped constraint components and pedestrian crossing line antiskid components on a constructed concrete bottom plate, and firstly, a formwork is supported; then, pre-burying double rows of shear-resistant studs for resisting the punching force of the traveling load, wherein the double rows of shear-resistant studs are positioned on the stepped constraint components at two sides of the pedestrian crossing line, the height H = 100-200 mm of the shear-resistant studs and the burying depth H 3 = 1/2H-1/3H, and the center-to-center distance D between two adjacent shear-resistant studs in the width direction of the pedestrian crossing line 3 ＝D 1 +D 2 Center-to-center distance L in the longitudinal direction of pedestrian crossing 5 ＝1/3L Step 2 Distance between the center of the outer shear pin and the edge of the stepped restraining member and L 5 The consistency is achieved; the top elevation of the pedestrian crossing line antiskid member and the step-shaped concrete block is consistent with the elevation of the upper layer of the asphalt; finally, maintaining and removing the template;
s3, manual napping treatment and grooving construction: firstly, roughening the surfaces of a stepped constraint component and a pedestrian crossing line antiskid component to manufacture a microscopic structure, and then, grooving after the concrete reaches a certain strength to manufacture a macroscopic structure; manually napping after the water film on the surface of the concrete disappears, and longitudinally dragging the surface of the concrete exposed on the asphalt pavement by adopting coarse linen, geotextile or gunny bag to manufacture a microscopical structure so as to improve the skid resistance of the pavement; when the concrete reaches 40% of the designed strength, grooving construction is carried out(ii) a The longitudinal groove size of the surfaces of the stepped constraint component and the pedestrian crosswalk line antiskid component is the groove depth H 4 = 2-5 mm, groove width D 4 = 3-5 mm, groove spacing D 5 = 15-30 mm; when grooving, the saw blade is lowered to a state of being in contact with the road surface, the direction angle is adjusted, the pre-scribed ink line is aligned, the saw blade is used for cutting concrete, and the grooving depth is controlled; after the grooving construction is finished, timely cleaning and maintaining the pavement are paid attention to;
s4, laying a base layer and a surface layer: paving an asphalt binder base layer at the pedestrian crossing, paving a surface layer at the base layer according to the step of paving a bridge deck after paving the base layer, wherein the asphalt needs to be flat and compact after paving; firstly, removing sundries on a pavement base before paving pavement asphalt to ensure the pavement base to be dry and clean; secondly, spraying the asphalt of the adhesive layer and the permeable layer; finally paving the asphalt mixture;
s5, spraying paint on pedestrian crossing lines: crosswalk line length L 1 ＝3～5m＝L 4 +2*L Step 1 Width D 1 =400mm or 450mm; distance D between two adjacent pedestrian crossing lines 2 = 600-800 mm; when the mark line is constructed on a cement pavement or an old asphalt pavement, the primer is sprayed, and then the primer is dried and sprayed with hot-melt coating; the crosswalk line should be straight, smooth, clean and even.
Compared with the prior art, the invention has the following beneficial effects:
1. the anti-skid component is arranged at the pedestrian crossing line to increase the roughness of the pedestrian crossing so as to improve the anti-skid performance; the integrity and the anti-rutting performance of the anti-skid pedestrian crossing pavement treatment structure are improved by adopting the stepped constraint component.
2. The invention adopts the cast-in-place reinforced concrete slab, the pedestrian crossing line antiskid member and the stepped constraint member to play a role in resisting ruts for the road intersection; adopt shear-resistant stud can resist the die-cut force of driving load, guarantee that anti-skidding pedestrian crossing road surface handles structure and has better wholeness ability.
3. The invention can provide a drainage channel, improve the anti-skid performance of the pedestrian crossing and reduce the occurrence of traffic accidents through the macroscopic and microscopic structures on the road surface of the pedestrian crossing line anti-skid member.
4. The invention adopts the reinforced concrete structure, is convenient for construction, maintenance and repair, and can obviously reduce the construction cost.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a perspective view of a single lane anti-skid crosswalk pavement treatment structure unit according to the present invention;
FIG. 3 is a schematic plan view of a single-lane anti-skid crosswalk pavement treatment structure unit according to the present invention;
FIG. 4 isbase:Sub>A sectional view taken along line A-A of FIG. 3;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 3;
FIG. 6 is a cross-sectional view taken along line C-C of FIG. 3;
FIG. 7 is a cross-sectional view taken along line D-D of FIG. 3;
FIG. 8 is a cross-sectional view taken along line E-E of FIG. 4;
FIG. 9 is a sectional view taken along line F-F in FIG. 4;
FIG. 10 is a schematic plan view of a longitudinal groove on the surface of a concrete member according to the present invention;
FIG. 11 is a schematic side view of a longitudinal groove cut in the surface of a concrete member according to the present invention;
fig. 12 is a schematic view of reinforcing bars for a reinforced concrete slab in accordance with the present invention;
FIG. 13 is a schematic view of the arrangement of bottom ribs of a reinforced concrete slab according to the present invention;
fig. 14 is a schematic view of the arrangement of negative reinforcement of the reinforced concrete panel according to the present invention.
In the figure: the anti-skid pedestrian crossing comprises a pedestrian crossing line 1, a single-lane anti-skid pedestrian crossing pavement treatment structural unit 2, a reinforced concrete slab 3, a pedestrian crossing line anti-skid component 4, a step-shaped constraint component 5, shear-resistant studs 6, asphalt fillers 7, an upper surface layer 8, a middle surface layer 9, a lower surface layer 10, a base layer 11, a lower base layer 12, a short-span negative rib 13, a short-span bottom rib 14, a long-span bottom rib 15 and a long-span negative rib 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention is more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.
Referring to fig. 1-14, an anti-skid crosswalk road surface disposal structure includes a single-lane anti-skid crosswalk road surface disposal structure unit 2 disposed on a crosswalk line 1.
Specifically, the single lane anti-skid pedestrian crossing pavement treatment structure unit 2 comprises a bottom base layer 12 and a reinforced concrete plate 3 arranged on the bottom base layer 12, a plurality of pedestrian crossing line anti-skid members 4 are arranged at the middle positions on the reinforced concrete plate 3, the plurality of pedestrian crossing line anti-skid members 4 are uniformly arranged at intervals, stepped restraining members 5 are arranged on two sides of the plurality of pedestrian crossing line anti-skid members 4, shear-resistant studs 6 are arranged on the stepped restraining members 5, and longitudinal grooves are formed in the surfaces of the stepped restraining members 5 and the pedestrian crossing line anti-skid members 4.
Wherein, leave the interval between two adjacent pedestrian crossing line antiskid member 4, the interval intussuseption is filled with asphalt filler 7, asphalt filler 7 includes basic unit 11 and locates the surface course of basic unit 11 top.
Wherein, the surface course includes upper surface course 8, well surface course 9 and lower surface course 10, upper surface course 8, well surface course 9 and lower surface course 10 set gradually from top to bottom.
The surface elevation of the pedestrian crossing line antiskid component and the surface elevation of the stepped constraint component are consistent with the elevation of the asphalt pavement.
As shown in attached figure 1, the antiskid crosswalk pavement treatment structure is positioned at a crosswalk of a road intersection, plays a role in prompting and protecting traffic participants and protecting roadsAnd (4) acting. Width D of single motor vehicle lane Lane The width of N lanes is D = N × D Lane . Crosswalk line length L 1 Width of 3-5 m 1 =400mm or 450mm; distance D between two adjacent pedestrian crossing lines 2 And (8) = 600-800 mm. The pavement thickness range of the asphalt binder base course and the inorganic binder stable subbase course pavement with heavy traffic load grades is as follows: surface layer H Surface layer = 100-120 mm, base layer (asphalt binder) H Base layer = 100-150 mm, underlayer (inorganic binder-stable type) H Sub-base layer = 300-600 mm, wherein the upper layer H Upper surface layer = 20-30 mm, middle layer H Middle layer = 30-40 mm, lower layer H Lower surface layer And (5) 40-70 mm. A lane is taken as a structural unit, and the specific construction process is as follows:
s1, cast-in-place construction of a reinforced concrete slab: referring to fig. 2, 4, 9, 12, 13 and 14, a reinforced concrete slab 3 is cast on the sub-base 12 of the crosswalk to ensure the anti-skid crosswalk pavement treatment structure has good overall performance and rigidity, and the length L of the reinforced concrete slab of the single lane 2 Width of 7-10 m and width of single motor vehicle lane D Lane Uniform, height H 2 =100mm; firstly, a template is supported; then binding reinforcing steel bars, wherein a short span bottom rib 14 and a long span bottom rib 15 are positioned at the lower part of the plate, a short span negative rib 13 and a long span negative rib 16 are positioned at the upper part of the plate, a lower reinforcement middle and short span bottom rib 14 is positioned below and a long span bottom rib 15 is positioned above, a long span negative rib 16 in an upper reinforcement middle and long span negative rib 13 is positioned below and above, bottom ribs automatically form a net piece, the negative ribs only form net pieces at the crossed parts of two directions, one-way negative ribs cannot form net pieces, ribs need to be distributed to help to form the net pieces during actual construction, and L Long span :L Short span <1.5 hour design according to bidirectional plate, L Long span :L Short span >1.5 times according to the design of a one-way plate, the diameter d = 8-12 mm and the distance L of the middle short span negative rib, the short span bottom rib, the long span bottom rib and the long span negative rib of the plate Distance between each other = 70-200 mm; then pre-burying single row shear resistant pin 6 to resist the impact force of the traveling load, the single row shear resistant pin 6 is positioned at two sides of the pedestrian crossing line anti-slip component 4, and the shear resistant pin 6 is arranged on the reinforced concrete slab 3The height H =100 mm-200 mm of the shear-resistant stud 6 and the embedding depth H of the shear-resistant stud 6 3 = 1/2H-1/3H, distance L between center of shear stud 6 and edge of reinforced concrete slab 3 3 ＝1/12L 1 Center-to-center distance D between two adjacent shear studs 6 3 ＝D 1 +D 2 (ii) a And finally, maintaining and removing the template.
S2, carrying out cast-in-place construction on the pedestrian crossing line anti-skidding component and the stepped constraint component: referring to fig. 2, 3, 4, 5, 6, 7 and 8, the crosswalk line slip prevention member 4 is located at the crosswalk line 1, and the length L of the single crosswalk line slip prevention member 4 4 = 2.5-4.5 m, width and D 1 Uniform, height H 1 ＝100～170mm＝H Surface layer +H Base layer - H 2 (ii) a Distance between two adjacent pedestrian crosswalk line anti-skid members 4 and distance between two adjacent pedestrian crosswalk line anti-skid members D 2 The consistency is achieved; the step-shaped restraining members 5 are positioned at two sides of the pedestrian crossing line antiskid member 4, and the length L of the single step-shaped restraining member 5 Constraining ＝1/2L 1 Width and width of single lane D Lane Uniform, height H Constraining ＝H 1 = 100-170 mm, wherein the length of the first step L Ladder 1 ＝1/6L 1 Height H Ladder 1 ＝50～70mm＝H Upper surface layer +H Middle layer (ii) a Length L of the second step Step 2 ＝1/3L 1 Height H Ladder 2 ＝50～70mm＝H Upper surface layer +H Middle layer (ii) a Step-shaped restraining components and pedestrian crossing line anti-skid components are cast in situ on a constructed concrete bottom plate, and a template is firstly erected; then pre-burying double rows of shear-resistant studs to resist the die-cutting force of the load of the travelling crane, wherein the double rows of shear-resistant studs are positioned on the stepped constraint components at two sides of the pedestrian crossing line, the height H = 100-200 mm, and the embedding depth H 3 = 1/2H-1/3H, and the center-to-center distance D of two adjacent shear-resistant studs in the width direction of the pedestrian crossing line 3 ＝D 1 +D 2 Center-to-center distance L in the pedestrian crossing line length direction 5 ＝1/3L Step 2 Distance between the center of the outer shear stud and the edge of the stepped restraining member and L 5 Consistency; pedestrian crosswalk line antiskid member and stepped concrete blockThe top elevation of the asphalt is consistent with the elevation of the upper layer of the asphalt; and finally, maintaining and removing the template.
S3, manual napping treatment and grooving construction: as shown in fig. 10 and 11, roughening treatment is performed on the surfaces of the stepped restraining member and the pedestrian crossing line antiskid member to manufacture a microscopic structure, and then grooving construction is performed after the concrete reaches a certain strength to manufacture a macroscopic structure; manually napping after the water film on the surface of the concrete disappears, and longitudinally dragging (perpendicular to the pedestrian passing direction and parallel to the driving direction) the surface of the concrete exposed on the asphalt pavement by adopting coarse linen, geotextile or gunny bag to manufacture a microscopical structure so as to improve the skid resistance of the pavement; when the concrete reaches 40 percent of the designed strength (normal curing for 4 to 5 days), grooving construction is carried out; the longitudinal groove size of the surfaces of the stepped constraint component and the pedestrian crosswalk line antiskid component is the groove depth H 4 = 2-5 mm, groove width D 4 = 3-5 mm, groove spacing D 5 = 15-30 mm; when grooving, the saw blade is lowered to a state of being in contact with the road surface, the direction angle is adjusted, the pre-scribed ink line is aligned, the saw blade is used for cutting concrete, and the grooving depth is controlled; after the grooving construction is finished, timely cleaning and maintaining the pavement are paid attention to; so as to realize the first stage of carving, the first stage of cleaning and the first stage of health preserving. The macroscopic structure weakens 'water slipping' and guarantees 'dry contact' in rainy days, provides a retarding friction force component for the embedding and squeezing action of the tire and the sole rubber, and the microscopic structure of the groove tooth part provides a sticking friction force component. The friction performance of the grooved pavement is obviously higher than that of a non-grooved pavement, and particularly under the rainy day condition, the grooves not only can provide good drainage channels for the pavement to enable accumulated water on the pavement to flow to a water collecting well along with a cross slope (1% -3%) of the pavement, but also can ensure the contact among tires, soles and the pavement, improve the anti-skid performance and reduce the occurrence of traffic accidents.
S4, laying a base layer and a surface layer: as shown in attached figures 2 and 3, an asphalt binder base layer at a pedestrian crossing is paved, after the base layer is paved, a surface layer at the position is paved according to the step of paving a bridge deck, and the asphalt needs to be smooth and compact after being paved; firstly, removing sundries on a pavement base before paving pavement asphalt to ensure the pavement base to be dry and clean; secondly, spraying the asphalt of the adhesive layer and the permeable layer; finally paving the asphalt mixture;
s5, spraying paint on pedestrian crossing lines: referring to FIGS. 1 and 2, the crosswalk line length L 1 ＝3～5m＝L 4 +2*L Step 1 Width D of 1 =400mm or 450mm; the distance D between two adjacent pedestrian crossing lines 1 2 = 600-800 mm; when the marking lines are marked on the cement pavement or the old asphalt pavement, the primer oil is sprayed, and the primer oil is sprayed after the primer oil is dried; the pedestrian crossing lines should be straight, smooth, bright, clean and uniform.
In the embodiment, the concrete at the pedestrian crossing line is bright in color and good in visibility, and is beneficial to driving at night; the cast-in-place reinforced concrete slab, the pedestrian crossing line antiskid member and the stepped constraint member are adopted, so that the anti-rutting effect on the road intersection can be achieved; the macroscopic and microscopic structures on the surfaces of the stepped constraint component and the pedestrian crossing line antiskid component can provide a drainage channel, improve the antiskid performance of the pedestrian crossing and reduce the occurrence of traffic accidents; the shear-resistant studs can resist the punching force of the traffic load, so that the anti-skid pedestrian crossing pavement treatment structure has better overall performance; the reinforced concrete structure is adopted, so that the construction, maintenance and repair are convenient and simple, and the construction cost can be obviously reduced.
The description and practice of the disclosure herein will be readily apparent to those skilled in the art from consideration of the specification and understanding, and may be modified and modified without departing from the principles of the disclosure. Therefore, modifications and improvements made without departing from the spirit of the invention should also be considered as the scope of the invention.
Claims (2)
1. An antiskid crosswalk road surface disposal structure is characterized by comprising a single-lane antiskid crosswalk road surface disposal structural unit arranged on a crosswalk line;
the single-lane anti-skidding pedestrian crossing pavement disposal structure unit comprises a base layer and a reinforced concrete plate arranged on the base layer, wherein a plurality of individual pedestrian crossing line anti-skidding components are arranged in the middle of the reinforced concrete plate and are uniformly arranged at intervals, stepped constraint components are arranged on two sides of the individual pedestrian crossing line anti-skidding components, anti-shearing studs are arranged on the stepped constraint components, and longitudinal notches are formed in the surfaces of the pedestrian crossing line anti-skidding components and the stepped constraint components;
a gap is reserved between every two adjacent pedestrian crossing line anti-slip components, asphalt filler is filled in the gap, and the asphalt filler comprises a base layer and a surface layer arranged above the base layer;
the surface layers comprise an upper surface layer, a middle surface layer and a lower surface layer, and the upper surface layer, the middle surface layer and the lower surface layer are sequentially arranged from top to bottom;
the surface elevation of the pedestrian crossing line antiskid component and the surface elevation of the stepped constraint component are consistent with the elevation of the asphalt pavement.
2. The construction method of the anti-skid crosswalk road surface disposal structure according to claim 1, characterized by comprising the following concrete construction steps:
s1, reinforced concrete slab cast-in-place construction: a reinforced concrete slab is cast on the subbase layer at the crosswalk to ensure the overall performance and rigidity of the anti-skid crosswalk pavement treatment structure and the length L of the reinforced concrete slab of the single lane 2 Width of 7-10 m and width of single motor vehicle lane D Lane Uniform, height H 2 =100mm; firstly, a template is supported; then binding the steel bar L Long span :L Short span <1.5 hour design according to bidirectional plate, L Long span :L Short span >1.5 times according to the design of a one-way plate, the diameter d = 8-12 mm and the distance L of the middle-short span negative rib, the short span bottom rib, the long span bottom rib and the long span negative rib of the plate Distance between = 70-200 mm; then pre-burying single row shear-resistant studs to resist the punching force of the traffic load, wherein the single row shear-resistant studs are positioned at two sides of the pedestrian crossing line antiskid component and are arranged on the reinforced concrete slab, the height H = 100-200 mm of the shear-resistant studs, and the embedding depth H of the shear-resistant studs is H 3 = 1/2H-1/3H, distance L between center of shear-resistant stud and edge of reinforced concrete slab 3 ＝1/12L 1 Center-to-center spacing D between two adjacent shear-resistant studs 3 ＝D 1 +D 2 (ii) a Finally, maintaining and removing the template;
s2, carrying out cast-in-place construction on the pedestrian crossing line anti-slip component and the stepped constraint component: the anti-skid component of the pedestrian crossing line is positioned at the pedestrian crossing line, and the length L of the anti-skid component of the single pedestrian crossing line 4 = 2.5-4.5 m, width and D 1 Uniform, height H 1 ＝100～170mm＝H Surface layer +H Base layer - H 2 (ii) a Distance between two adjacent pedestrian crosswalk line anti-slip members and D 2 Consistency; the step-shaped restraining members are positioned at two sides of the pedestrian crossing line antiskid member, and the length L of the single step-shaped restraining member Constraining ＝1/2L 1 Width and width of single lane D Lane Uniform, height H Constraining ＝H 1 = 100-170 mm, wherein the length of the first step L Step 1 ＝1/6L 1 Height H Step 1 ＝50～70mm＝H Upper surface layer +H Middle layer (ii) a Length L of the second step Step 2 ＝1/3L 1 Height H Step 2 ＝50～70mm＝H Upper surface layer +H Middle layer (ii) a Cast-in-place stepped constraint components and pedestrian crossing line antiskid components on a constructed concrete bottom plate, and firstly, a formwork is supported; then, pre-burying double rows of shear-resistant studs for resisting the punching force of the traveling load, wherein the double rows of shear-resistant studs are positioned on the stepped constraint components at two sides of the pedestrian crossing line, the height H = 100-200 mm of the shear-resistant studs and the burying depth H 3 = 1/2H-1/3H, and the center-to-center distance D of two adjacent shear-resistant studs in the width direction of the pedestrian crossing line 3 ＝D 1 +D 2 Center-to-center distance L in the longitudinal direction of pedestrian crossing 5 ＝1/3L Step 2 Distance between the center of the outer shear pin and the edge of the stepped restraining member and L 5 The consistency is achieved; the top elevation of the pedestrian crosswalk line antiskid member and the step-shaped concrete block is consistent with the elevation of the upper layer of asphalt; finally, maintaining and removing the template;
s3, manual napping treatment and grooving construction: first, it is in a step shapeRoughening the surfaces of the bundle member and the pedestrian crossing line antiskid member to manufacture a microscopic structure, and then performing grooving construction after the concrete reaches a certain strength to manufacture a macroscopic structure; manually napping after the water film on the surface of the concrete disappears, and longitudinally dragging the surface of the concrete exposed on the asphalt pavement by adopting coarse linen, geotextile or gunny bag to manufacture a microscopical structure so as to improve the skid resistance of the pavement; grooving construction is carried out after the concrete reaches 40% of the design strength; the longitudinal groove size of the surfaces of the stepped constraint component and the pedestrian crosswalk line antiskid component is the groove depth H 4 = 2-5 mm, groove width D 4 = 3-5 mm, groove spacing D 5 = 15-30 mm; when grooving, the saw blade is lowered to a state of being in contact with the road surface, the direction angle is adjusted, the pre-scribed ink line is aligned, the saw blade is used for cutting concrete, and the grooving depth is controlled; after the grooving construction is finished, timely cleaning and maintaining the pavement;
s4, laying a base layer and a surface layer: paving an asphalt binder base layer at the pedestrian crossing, paving a surface layer at the base layer according to the step of paving a bridge deck after paving the base layer, wherein the asphalt needs to be flat and compact after paving; firstly, removing sundries on a pavement base before paving pavement asphalt to ensure the pavement base to be dry and clean; secondly, spraying the asphalt of the adhesive layer and the permeable layer; finally paving the asphalt mixture;
s5, spraying paint on pedestrian crossing lines: crosswalk line length L 1 ＝3～5m＝L 4 +2*L Step 1 Width D 1 =400mm or 450mm; distance D between two adjacent pedestrian crossing lines 2 = 600-800 mm; when the marking lines are marked on the cement pavement or the old asphalt pavement, the primer oil is sprayed, and the primer oil is sprayed after the primer oil is dried; the crosswalk line should be straight, smooth, clean and even.
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