CN112726325B - Sidewalk drainage structure and combined drainage method of sidewalk drainage structure and drainage curb - Google Patents
Sidewalk drainage structure and combined drainage method of sidewalk drainage structure and drainage curb Download PDFInfo
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- CN112726325B CN112726325B CN202011564013.3A CN202011564013A CN112726325B CN 112726325 B CN112726325 B CN 112726325B CN 202011564013 A CN202011564013 A CN 202011564013A CN 112726325 B CN112726325 B CN 112726325B
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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
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/221—Kerbs or like edging members, e.g. flush kerbs, shoulder retaining means ; Joint members, connecting or load-transfer means specially for kerbs
- E01C11/222—Raised kerbs, e.g. for sidewalks ; Integrated or portable means for facilitating ascent or descent
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/046—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps adapted to be used with kerbs
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
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Abstract
The invention discloses a sidewalk drainage structure and a combined drainage method of the sidewalk drainage structure and drainage curb stones, wherein the sidewalk drainage structure is a permeable drainage surface layer composed of permeable concrete and a plurality of permeable blind road bricks, a permeable drainage base layer composed of a plurality of first drainage building blocks, second drainage building blocks and graded broken stones or broken gravels is arranged below the permeable concrete, a first cement mortar leveling layer and a second cement mortar leveling layer are respectively paved below the permeable blind road bricks and below the permeable drainage base layer, a concrete cushion layer is arranged on the part below the second cement mortar leveling layer, and a compacted soil base is arranged below the concrete cushion layer. The pedestrian path drainage structure provided by the invention has the characteristics of short infiltration path, simple structure, convenience in construction, material saving, obvious economy and the like, and in addition, the invention also provides a drainage curb structure, so that rainwater on the surface of a road and the infiltrated rainwater in a sidewalk or a square footpath provided with the curb can be directly introduced into the curb.
Description
Technical Field
The invention belongs to the technical field of traffic infrastructure, and relates to a sidewalk drainage structure and a combined drainage method of the sidewalk drainage structure and drainage curb stones.
Background
In recent years, urban flood disasters frequently occur in cities such as Beijing, Guangzhou, Wuhan, Nanjing, Shenzhen, Chongqing and the like in China, and the main reasons are that: firstly, under the influence of global warming, the water content of the atmosphere is increased due to the rising of the air temperature, the water holding capacity of the atmosphere is continuously enhanced, and strong rainfall is generated once the water content of the atmosphere reaches saturation and meets the rainfall condition; and secondly, along with the continuous promotion of the urbanization process, the areas of urban roads and squares are also continuously increased, so that the impervious area is greatly increased, rainwater infiltration is reduced, once the urban roads are subjected to strong rainfall or the duration of rainy seasons is long, the phenomenon that the drainage quantity of a road surface drainage system is smaller than the collection quantity of a road surface is easily caused, a large amount of rainwater is collected on the surface of the road in a short time, further urban flood disasters are easily caused, the traffic trip is seriously influenced by the flood disasters generated in the cities, the urban infrastructures are soaked by the rainwater, and the life and property safety of people is threatened.
In order to alleviate the problem of large rainwater runoff on the surface of an urban road, one of the common methods is to use a water permeable material to introduce a part of rainwater on the road surface into the ground for hidden drainage, so as to reduce the pressure of drainage on the road surface. The method mainly comprises the steps that 3-6 cm of water permeable bricks, 2-3 cm of cement mortar or medium coarse sand, 8-12 cmC15 or C20 plain concrete and 10-15 cm of graded broken stones are adopted for the sidewalks on two sides of the current road to conduct seepage drainage, rainwater is introduced below the ground surface to conduct drainage, however, the drainage structure has a certain effect on the condition that the rainfall is small and no runoff is formed or the sidewalks and the footpath are soaked by the rainwater, the rainwater can slowly seep through the water permeable bricks and the structures below the water permeable bricks, but when strong rainfall occurs and the rainfall time is long, due to the fact that the existing sidewalk structure is long in rainwater seepage paths, most of the rainwater cannot seep into the footpath in time, the drainage pressure of a road surface is increased, and the safety of driving and pedestrians is affected; in addition, the curbs on both sides of the sidewalk are mainly made of precast concrete blocks prefabricated in factories or processed by stone materials, so that the structure and the function are too single, and an effective structure and a method for combining the sidewalk and the curbs to drain water are lacked.
Disclosure of Invention
The invention aims to provide a sidewalk drainage structure and a combined drainage method of the sidewalk drainage structure and drainage curb stones, aiming at the defects of the prior art. Firstly, the sidewalk drainage structure provided by the invention has the characteristics of short infiltration path, simple structure, convenience in construction, material saving, obvious economy and the like, is also suitable for being used in footpaths such as railway station squares, bus station squares, living shopping squares and the like, can effectively accelerate the infiltration speed and the infiltration amount of surface rainwater such as the sidewalks, the footpaths and the like, and relieves the pressure of road surface drainage; in addition, the invention also provides a drainage curb structure, so that rainwater on the surface of a road in a sidewalk or a square footpath provided with the curb and the downward-seeping rainwater are directly introduced into the curb and are discharged into nearby rainwater pipelines through a water outlet of the curb, and the problem of water accumulation on the surface of the road can be effectively relieved; finally, the invention provides a sidewalk drainage structure and a combined drainage method of the sidewalk drainage structure and drainage kerbs.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a sidewalk drainage structure, which comprises a first sidewalk drainage structure, wherein a permeable drainage surface layer is formed by permeable concrete and a plurality of permeable blind road bricks, a permeable drainage base layer is arranged below the permeable concrete and is formed by a plurality of first drainage building blocks, second drainage building blocks and graded broken stones or gravels, a first cement mortar leveling layer and a second cement mortar leveling layer which are 2-3 cm in length are respectively paved below the permeable blind road bricks and below the permeable drainage base layer, a concrete cushion layer with the strength not less than C15 is preferably selected from the part below the second cement mortar leveling layer, and a compacted soil base with the compaction degree not less than 90% is arranged below the concrete cushion layer.
The compressive strength grade of the pervious concrete and the pervious blind road bricks is not lower than C30, and the porosity of the pervious concrete is preferably 15-25%, so that the pervious concrete surface layer has enough strength while meeting the infiltration of rainwater.
Furthermore, the first drainage block is arranged below the permeable drainage surface layer and is close to one side of the drainage curb, the first drainage block is of a cuboid structure with a main drainage groove, the bottom of the main drainage groove of the first drainage block is preferably arc-shaped or rectangular so as to collect and remove rainwater permeated by the permeable drainage surface layer, 1-2 pairs of auxiliary drainage grooves used for communicating adjacent drainage blocks are symmetrically formed in the two sides of the top of the groove body of the first drainage block, so that when the seepage flow is large, water flows among the drainage blocks of the permeable drainage base layer can be mutually communicated, the permeated water below a sidewalk can be better discharged, an end groove is formed in the end part of the first drainage block on one side of the drainage curb, and a grid fence for intercepting graded broken stones or gravels is arranged in the end groove.
Furthermore, the second drainage block is arranged on the basis of the first drainage block, the end part of the groove body of the second drainage block is not provided with an end part groove, and a grid fence is not arranged, so that the second drainage block can be used in any other position except for one side close to a drainage curb in a sidewalk permeable drainage base layer.
Furthermore, graded broken stones or crushed gravels are fully paved in the main body drainage grooves of the first drainage building block and the second drainage building block, and the graded broken stones or crushed gravels, the first drainage building block and the second drainage building block form a permeable drainage base layer.
Furthermore, the strength grade of the first drainage block and the second drainage block is preferably C25 waterproof concrete, when common silicate concrete is adopted, a layer of impermeable geotextile can be laid in the main body drainage groove of the first drainage block and the second drainage block, and graded broken stones or gravel are laid on the impermeable geotextile.
And the contact surfaces among the drainage building blocks are bonded by adopting third cement mortar, and the first cement mortar leveling layer, the second cement mortar leveling layer and the third cement mortar are preferably cement mortar with the strength grade not lower than M7.5.
Furthermore, the thickness of the pervious concrete surface layer is preferably 5cm, the thickness of the pervious blind road brick is preferably 3cm, the height of the first drainage building block and the height of the second drainage building block are preferably 8-12 cm, and the length, the width and the groove body thickness of the first drainage building block and the second drainage building block can be combined to set the local rainfall according to actual needs.
Furthermore, each structural layer of the sidewalk is set to be a one-way drainage cross slope facing one side of the drainage curb stone, and the cross slope of 1% -2% is preferred for the one-way drainage cross slope.
Furthermore, the material of the grid fence can be stainless steel metal, galvanized metal or hard plastic material, and the diameter of each grid in the grid fence can meet the requirement that the diameter of each grid is smaller than the minimum particle size of graded broken stone or gravel.
The invention relates to a sidewalk drainage structure, and in addition, a second sidewalk drainage structure is seen, wherein a permeable drainage surface layer of the sidewalk drainage structure is formed by paving water permeable bricks and water permeable blind bricks with the compressive strength grade of 3-6 cm not lower than C30, a fourth cement mortar leveling layer with the strength grade of 2-3 cm not lower than M7.5 is arranged below the water permeable bricks and the water permeable blind bricks, a permeable drainage base layer consisting of a plurality of first drainage building blocks, second drainage building blocks and graded broken stones or gravel is arranged below the fourth cement mortar leveling layer, a second cement mortar leveling layer with the strength grade of 2-3 cm not lower than M7.5 is arranged below the permeable drainage base layer, a concrete cushion layer with the strength of 4-6 cm not lower than C15 is preferably arranged below the second cement mortar leveling layer, and a compacted soil base with the compaction degree not lower than 90% is arranged below the concrete cushion layer.
Furthermore, in the second sidewalk drainage structure, except for the arrangement of the fourth cement mortar leveling layer above the permeable drainage surface layer and the permeable drainage base layer, the fourth cement mortar leveling layer is different from that of the first sidewalk, the parts below the permeable drainage base layer of the second sidewalk can adopt the composition and the structure which are consistent with those below the permeable drainage base layer of the first sidewalk.
The invention relates to a drainage kerb structure, which comprises a first drainage kerb, a second drainage kerb and a third drainage kerb, wherein the first drainage kerb and the second drainage kerb are used for a straight line section, and the third drainage kerb is used for a flat curve section and a part where a straight line is connected with a flat curve.
Furthermore, a through drainage channel is arranged inside the first drainage curb, an arc-shaped sinking platform or a rectangular sinking platform is arranged at the top of the first drainage curb close to one side of the sidewalk to increase the linear attractiveness of the drainage curb, a first water inlet for collecting rainwater on the surface of the sidewalk is arranged at the bottom of the arc-shaped sinking platform or the rectangular sinking platform, a second water inlet for discharging rainwater in the permeable drainage base layer is arranged on the body of the first drainage curb close to one side of the sidewalk, and a water outlet is arranged at one side of the bottom of the first drainage curb body.
Furthermore, the bottom elevation of the arc-shaped sinking platform or the rectangular sinking platform of the first drainage curb is consistent with the elevation of the sidewalk edge curb, so that rainwater can flow into the curb, and a water blocking body on one side of the sinking platform at the top of the first drainage curb is higher than the surface of the sidewalk, so that rainwater on the surface of the sidewalk can be intercepted, meanwhile, the vehicles can be prevented from randomly crossing the sidewalk curb, and the phenomenon that the vehicles occupy the sidewalk space and further influence normal passing of pedestrians can be avoided.
Further, a first water inlet and a second water inlet of the first drainage curb are respectively provided with a first filter screen and a second filter screen, and a drain pipe communicated with a rainwater pipeline is arranged at the drain outlet at the bottom of the first drainage curb groove body.
Further, the first drainage curb preferably has a prefabricated reinforced concrete structure with a strength grade not lower than C25, and the bottom of the first drainage curb and the cross section between the drainage curbs are preferably bonded and leveled by fifth cement mortar with a strength not lower than M7.5.
Further, the structure of second drainage curb, third drainage curb is similar with first drainage curb structure, and the difference lies in: the second drainage curb is arranged on the basis of the first drainage curb, and a drainage port and a drainage pipe are not arranged at the bottom of the groove body; and the front end and the rear end of the groove body of the third drainage curb are respectively provided with a concrete closed end on the basis of the first drainage curb.
Further, the first drainage curb of straight line section carries out the interval with second drainage curb and sets up, sets up the interval and preferably sets up the first drainage curb of a department every 3~5 meters.
The invention relates to a sidewalk drainage structure and a combined drainage method of the sidewalk drainage structure and a drainage curb, which comprises the following steps of:
(1) according to design drawings, construction schemes and relevant specifications, an excavation sideline of the sidewalk and the kerb is released on site, the surface of the ground is cleared and then excavation or replacement treatment is carried out according to soil conditions, roadbed soil is compacted, the degree of compaction is not lower than 90%, and a one-way drainage cross slope facing 1% -2% of one side of the drainage kerb is renovated on the top surface of the sidewalk and the roadbed.
(2) And paving a concrete cushion layer with the thickness of 4-6 cm and the strength of not less than C15 and a second cement mortar leveling layer with the thickness of 2-3 cm in sequence according to the conventional concrete construction process, and ensuring that the surface of the concrete cushion layer and the surface of the second cement mortar leveling layer have 1-2% of one-way drainage cross slope facing one side of the drainage curb stone.
(3) Paving a first drainage block and a second drainage block along the width of the sidewalk and the advancing direction of the sidewalk, wherein the first drainage block is paved at a position close to one side of the drainage curb stone, the second drainage block is paved at any other position on the sidewalk except the position close to one side of the drainage curb stone, and the water flow direction in a main body drainage groove of each drainage block faces the position of the drainage curb stone; and preferably, second cement mortar with the strength not lower than M7.5 is bonded among the drainage blocks.
(4) And grid fences are arranged in the first drainage building blocks, and graded broken stones or gravel stones are fully paved in the main body drainage grooves of the drainage building blocks.
(5) Paving a first drainage curb stone, a second drainage curb stone and a third drainage curb stone along the advancing direction of a sidewalk according to a construction method of the conventional curb stone, wherein the bottom elevation of a second water inlet of the three drainage curb stones is controlled to be consistent with the bottom elevation of a main drainage groove of a first drainage block during paving; the first drainage curb of the straight line section should be provided with one place every 3-5 meters, and the flat curve section and the place where the straight line meets the flat curve are independently drained by the third drainage curb to the rivers of the straight line section and the flat curve section can in time be drained into the rainwater pipeline.
(6) When a first sidewalk permeable drainage surface layer is paved, permeable concrete surface layers on two sides of the permeable brick of the blind sidewalk can be constructed firstly, after the strength of the permeable concrete surface layers on the two sides meets the requirement, a layer of first cement mortar is paved below the permeable blind sidewalk brick, and then the permeable blind sidewalk brick is paved; when a second sidewalk permeable drainage surface layer is paved, a fourth cement mortar leveling layer is paved on the permeable drainage base layer, and then water permeable bricks and water permeable blind road bricks are paved on the fourth cement mortar leveling layer. The permeable concrete of the permeable drainage surface layer, the surface treatment, the arrangement of the contraction joint and the expansion joint, and the laying of the permeable brick and the permeable blind sidewalk brick can be laid according to the construction process and the standard requirement of the conventional cement concrete surface layer, the permeable brick and the permeable blind sidewalk brick.
Compared with the prior art, the invention has the following prominent substantive characteristics and remarkable progress:
(1) compared with the pedestrian path drainage structure generally adopted at present, the sidewalk drainage structure provided by the invention can reduce the thickness by 4-9 cm, and has the characteristics of short infiltration path, simple structure, convenience in construction, material saving, remarkable economic benefit and the like.
(2) The sidewalk drainage structure provided by the invention is also suitable for being used in footpaths such as railway station squares, bus station squares, living and shopping squares and the like, can effectively accelerate the infiltration speed and the infiltration amount of surface rainwater such as the sidewalks, the footpaths and the like, and relieves the pressure of drainage on the road surface.
(3) In the permeable drainage base layer provided by the invention, 1-2 pairs of auxiliary drainage grooves for communicating adjacent drainage blocks are symmetrically formed in two sides of the top of each drainage block body, so that when the seepage quantity is large, water flows among the drainage blocks of the permeable drainage base layer can be mutually communicated, and the seepage water below a sidewalk can be better discharged.
(4) The invention provides a drainage kerbstone structure, which is respectively provided with a first drainage kerbstone, a second drainage kerbstone and a third drainage kerbstone according to the linear characteristics and drainage requirements of straight line sections and flat curve sections, so that rainwater on the surface of a road and rainwater infiltrated in a sidewalk or a square pavement provided with the kerbstone are directly introduced into the kerbstone and are drained into a rainwater pipeline nearby through a water drainage port of the kerbstone, and the problem of water accumulation on the surface of the road can be effectively solved; meanwhile, each drainage curb is designed into a structure with a sinking platform and a water blocking body, so that rainwater on a sidewalk or a footpath can be intercepted, and the phenomenon that urban vehicles often cross the curb when parking and run on the sidewalk or the footpath to occupy the space of the sidewalk or the footpath can be effectively avoided.
Drawings
FIG. 1 is a schematic view of a first embodiment of the present invention of a combined drainage structure of a sidewalk and a drainage curb;
FIG. 2 is a schematic view of a second embodiment of the present invention of a combined drainage structure of a sidewalk and a drainage curb;
FIG. 3 is a schematic structural view of a first drainage block;
FIG. 4 is a schematic structural view of a second drainage block;
FIG. 5 is a schematic structural view of a first drainage block with a grid fence and full pavement of graded crushed stone or gravel;
FIG. 6 is a schematic structural view of a permeable drainage substrate;
FIG. 7 is a schematic structural view of a first drainage curb with an arc-shaped sink deck;
FIG. 8 is a schematic structural view of a second drainage curb with an arc-shaped sink deck;
FIG. 9 is a schematic view of a third drainage curb with an arcuate sink deck;
FIG. 10 is a schematic view of a first drainage curb with a rectangular sink deck;
fig. 11 is a schematic structural view of a second drainage kerb with a rectangular sink deck;
fig. 12 is a schematic view of a third drainage kerb with a rectangular sink deck.
The labels in the figures are: 1-pervious concrete, 2-pervious blind sidewalk brick, 3-first drainage block, 301-main body drainage groove, 302-auxiliary drainage groove, 303-end groove, 4-second drainage block, 5-graded broken stone or gravel, 6-first cement mortar leveling layer, 7-second cement mortar leveling layer, 8-concrete cushion layer, 9-compacted soil foundation, 10-drainage curb stone, 11-grid fence, 12-third cement mortar, 13-pervious brick, 14-fourth cement mortar leveling layer, 15-first drainage curb, 1501-drainage groove, 1502-arc sinking platform, 1503-first water inlet, 1504-second water inlet, 1505-water outlet, 1506-first filter screen, 1507-second filter screen, 1508-drainage pipe, 1509-water blocking body, 1510-rectangular sinking platform, 16-second drainage kerbstone, 17-third drainage kerbstone, 1701-concrete closed end, and 18-fifth cement mortar.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the following detailed description of the embodiments of the present invention will be made with reference to fig. 1 to 12.
Referring to fig. 1 to 12, in order to provide a sidewalk drainage structure and a combined drainage method of the sidewalk drainage structure and a drainage curb according to the present invention, first, a first sidewalk drainage structure is provided, the sidewalk drainage structure comprises a permeable drainage surface layer composed of permeable concrete 1 and a plurality of permeable blind road bricks 2, a permeable drainage base layer composed of a plurality of first drainage blocks 3, second drainage blocks 4 and graded broken stones or gravels 5 is provided below the permeable concrete 1, a first cement mortar leveling layer 6 and a second cement mortar leveling layer 7 of 2 to 3cm are respectively laid below the permeable blind road bricks 2 and below the permeable drainage base layer, a concrete cushion 8 of 4 to 6cm below the second cement mortar leveling layer 7 with strength not less than C15 is preferably selected, and a compacted soil base 9 of 90% or more is provided below the concrete cushion 8.
As shown in figure 1, in order to ensure that the permeable concrete surface layer has enough strength while meeting the requirement of rainwater infiltration, the compressive strength grade of the permeable concrete 1 and the permeable blind road bricks 2 is not lower than C30, and the porosity of the permeable concrete 1 is preferably 15-25%.
As shown in fig. 1 to 6, the first drainage block 3 is provided under the infiltration drainage surface layer on the side next to the drainage kerb 10, the first drainage block 3 has a rectangular parallelepiped structure with a main body drainage groove 301, the bottom of the main body drainage groove 301 of the first drainage block 3 is preferably circular arc or rectangular, so as to collect and discharge rainwater permeated by the permeation drainage surface layer, 1-2 pairs of auxiliary drainage grooves 302 for communicating the adjacent drainage building blocks are symmetrically arranged on two sides of the top of the groove body of the first drainage building block 3, so that when the seepage flow is great, rivers between each drainage building block of infiltration drainage basic unit can keep communicating each other, discharge the infiltration water of pavement below better, the tip that first drainage building block 3 is located drainage curb 10 one side is equipped with tip recess 303, is equipped with the net fence 11 that interception level is joined in marriage rubble or gravel 5 and is used in tip recess 303.
The second drainage block 4 is on the basis of the first drainage block 3, the end part of the groove body is not provided with an end part groove 303, and is also not provided with a grid fence 11, and the second drainage block can be used for any other position of the sidewalk in the permeable drainage base layer except for one side close to the drainage curb 10; graded broken stones or gravel stones 5 are fully paved in the main body drainage grooves 301 of the first drainage block 3 and the second drainage block 4, and the graded broken stones or gravel stones 5, the first drainage block 3 and the second drainage block 4 form a permeable drainage base layer.
The strength grade of the first drainage block 3 and the second drainage block 4 is preferably C25 waterproof concrete, when common silicate concrete is adopted, a layer of impermeable geotextile can be laid in the main body drainage groove 301 of the first drainage block 3 and the second drainage block 4, and graded broken stone or gravel 5 is laid on the impermeable geotextile.
And the contact surfaces among the drainage building blocks are bonded by adopting third cement mortar 12, and the first cement mortar leveling layer 6, the second cement mortar leveling layer 7 and the third cement mortar 12 are preferably cement mortar with the strength grade not lower than M7.5.
The thickness of 1 surface course of pervious concrete is preferred 5cm, and the thickness of 2 blind road bricks that permeate water is preferred 3cm, and the high preferred 8 ~ 12cm of first drainage building block 3 and second drainage building block 4, the length, the width and the groove body thickness of first drainage building block 3 and second drainage building block 4 can combine local rainfall to set up according to actual need.
Each structural layer of the sidewalk is a one-way drainage cross slope facing one side of the drainage kerb 10, and the cross slope of 1-2% is preferred for the one-way drainage cross slope.
The material of the grid fence 11 can be stainless steel metal, galvanized metal or hard plastic material, and the diameter of each grid in the grid fence 11 should meet the requirement of being smaller than the minimum particle size in the graded crushed stone or gravel 5.
As shown in fig. 2 to 6, for the second sidewalk drainage structure of the present invention, the permeable drainage surface layer of the sidewalk drainage structure is formed by paving water permeable bricks 13 and water permeable blind road bricks 2 with compressive strength grade of 3-6 cm not lower than C30, a fourth cement mortar leveling layer 14 with strength grade of 2-3 cm not lower than M7.5 is arranged below the water permeable bricks 13 and the water permeable blind road bricks 2, a plurality of first drainage blocks 3 are arranged below the fourth cement mortar leveling layer 14, a penetration drainage base layer consisting of second drainage building blocks 4 and graded broken stones or gravels 5, wherein a second cement mortar leveling layer 7 with the strength grade of 2-3 cm and not lower than M7.5 is arranged below the penetration drainage base layer, a concrete cushion layer 8 with the strength of not less than C15 is preferably arranged below the second cement mortar leveling layer 7 by 4-6 cm, and a compacted soil base 9 with the compaction degree of not less than 90% is arranged below the concrete cushion layer 8.
In the second sidewalk drainage structure, except that the arrangement of the fourth cement mortar leveling layer 14 above the permeable drainage surface layer and the permeable drainage base layer is different from that of the first sidewalk, all parts below the permeable drainage base layer of the second sidewalk can adopt the composition and the structure which are consistent with those below the permeable drainage base layer of the sidewalk.
As shown in fig. 7 to 12, a drainage kerb structure of the present invention includes first and second drainage kerbs 15 and 16 for straight line sections and third drainage kerbs 17 for flat curve sections and portions where straight lines meet flat curves.
The inside of the first drainage curb 15 is provided with a through drainage channel 1501, the top of the first drainage curb 15 close to one side of the sidewalk is provided with an arc-shaped sunken table 1502 or a rectangular sunken table 1510 so as to increase the line-shaped aesthetic property of the first drainage curb 15, the bottom of the arc-shaped sunken table 1502 or the rectangular sunken table 1510 is provided with a first water inlet 1503 for collecting rainwater on the surface of the sidewalk, the body of the first drainage curb 15 close to one side of the sidewalk is provided with a second water inlet 1504 for draining rainwater in the permeable drainage base layer, and one side of the bottom of the first drainage curb 15 is provided with a water outlet 1505.
The bottom elevation of the arc-shaped sinking platform 1502 or the rectangular sinking platform 1510 of the first drainage curb 15 is consistent with the elevation of the sidewalk edge curb table, so that rainwater can flow into the curb table, and the water blocking body 1509 on one side of the arc-shaped sinking platform 1502 or the rectangular sinking platform 1510 of the top of the first drainage curb 15 is higher than the surface of the sidewalk, so that rainwater on the surface of the sidewalk can be intercepted, meanwhile, vehicles can be prevented from crossing the sidewalk curb stones randomly, and the phenomenon that the vehicles occupy the sidewalk space and further influence normal passing of pedestrians is avoided.
A first filter screen 1506 and a second filter screen 1507 are respectively arranged at the first water inlet 1503 and the second water inlet 1504 of the first drainage curb 15, and a drainage pipe 1508 communicated with a rainwater pipeline is arranged at a drainage port 1505 at the bottom of the groove body of the first drainage curb 15.
The first drainage curb 15 is preferably a prefabricated reinforced concrete block having a strength grade not lower than C25, and the bottom of the first drainage curb 15 and the cross section between the drainage curbs are preferably bonded and leveled by fifth cement mortar 18 having a strength not less than M7.5.
The structures of the second and third drainage kerbs 16 and 17 are similar to the structure of the first drainage kerb 15, except that: the second drainage curb 16 is not provided with a drainage port 1505 and a drainage pipe 1508 at the bottom of the tank body on the basis of the first drainage curb 15; the third drainage curb 17 is provided with concrete-closed ends 1701 at both front and rear ends of the tank body in addition to the first drainage curb 15.
The first drainage curb 15 of straight line section carries out the interval with second drainage curb 16 and sets up, sets up the interval and preferably sets up a first drainage curb 15 of every 3~5 meters.
The invention relates to a sidewalk drainage structure and a combined drainage method of the sidewalk drainage structure and a drainage curb, which comprises the following steps of:
(1) according to design drawings, construction schemes and relevant specifications, an excavation sideline of the sidewalk and the kerb is released on site, the surface of the ground is cleared and then excavation or replacement treatment is carried out according to soil conditions, roadbed soil is compacted, the degree of compaction is not lower than 90%, and a one-way drainage cross slope facing 1% -2% of one side of the drainage kerb is renovated on the top surface of the sidewalk and the roadbed.
(2) And paving a concrete cushion layer 8 with the thickness of 4-6 cm and the strength of not less than C15 and a second cement mortar leveling layer 7 with the thickness of 2-3 cm in sequence according to the conventional concrete construction process, and ensuring that the surface of the concrete cushion layer 8 and the surface of the second cement mortar leveling layer 7 are provided with 1-2% of one-way drainage cross slopes facing one side of the drainage curb.
(3) Paving a first drainage block 3 and a second drainage block 4 along the width and the advancing direction of the sidewalk, wherein the first drainage block 3 is paved at a position close to one side of a curb, the second drainage block 4 is paved at any other position on the sidewalk, and the water flow direction in a main body drainage groove 301 of each drainage block faces to the position of the drainage curb; the third cement mortar 12 with the strength not lower than M7.5 is preferably bonded among the drainage blocks.
(4) The grid fence 11 is arranged in the first drainage block 3, and graded broken stone or gravel 5 is fully paved in the main body drainage groove 301 of each drainage block.
(5) Paving a first drainage curb 15, a second drainage curb 16 and a third drainage curb 17 along the advancing direction of a sidewalk according to a construction method of a conventional curb, wherein the elevation of the bottom of a second water inlet 1504 of the three drainage curbs is consistent with that of the bottom of a main drainage groove 301 of a first drainage block 3 during paving; the first drainage kerbs 15 of the straight line section are arranged at intervals of 3-5 meters, and the flat curve section and the joint of the straight line and the flat curve are independently drained by the third drainage kerbs 17, so that water flow of the straight line section and the flat curve section can be timely drained into a rainwater pipeline.
(6) When a first sidewalk permeable drainage surface layer is paved, permeable concrete 1 surface layers on two sides of the permeable blind road brick 2 can be constructed firstly, after the strength of the permeable concrete 1 surface layers on the two sides meets the requirement, a layer of first cement mortar 6 is paved below the permeable blind road brick 2, and then the permeable blind road brick 2 is paved; when a second sidewalk permeable drainage surface layer is paved, a fourth cement mortar leveling layer 14 can be paved on the permeable drainage base layer, and then the water permeable bricks 13 and the water permeable blind sidewalk bricks 2 can be paved on the fourth cement mortar leveling layer. The paving and forming, surface treatment, contraction joint and expansion joint of the permeable concrete 1 of the permeable drainage surface layer and the paving of the permeable bricks 13 and the permeable blind sidewalk bricks 2 can be paved according to the construction process and the standard requirements of the conventional cement concrete surface layer, the permeable bricks 13 and the permeable blind sidewalk bricks 2.
Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (7)
1. A sidewalk drainage structure, characterized in that: the sidewalk drainage structure comprises a permeable drainage surface layer consisting of permeable concrete (1) and a plurality of permeable blind road bricks (2), a permeable drainage base layer consisting of a plurality of first drainage building blocks (3), second drainage building blocks (4) and graded broken stones or gravels (5) is arranged below the permeable concrete (1), a first cement mortar leveling layer (6) and a second cement mortar leveling layer (7) which are 2-3 cm in length are respectively paved below the permeable blind road bricks (2) and below the permeable drainage base layer, a concrete cushion layer (8) is arranged at the part below the second cement mortar leveling layer (7), and a compacted soil base (9) with the compaction degree not less than 90% is arranged below the concrete cushion layer (8); the first drainage block (3) is arranged on one side, close to the drainage curb stone (10), below the permeable drainage surface layer, the first drainage block (3) is of a cuboid structure with a main drainage groove (301), and the bottom of the main drainage groove (301) of the first drainage block (3) is arc-shaped or rectangular; 1-2 pairs of auxiliary drainage grooves (302) for communicating adjacent drainage building blocks are symmetrically formed in two sides of the top of the groove body of the first drainage building block (3); an end groove (303) is formed in the end part, located on one side of the drainage curb stone (10), of the first drainage building block (3), and a grid fence (11) for intercepting graded broken stones or gravel (5) is arranged in the end groove (303); the second drainage building block (4) is arranged on the basis of the first drainage building block (3), the end part of the groove body is not provided with an end part groove (303) and is not provided with a gridding fence (11) and is used for penetrating any other position in the drainage base layer of the sidewalk except the position close to one side of the drainage curb stone (10); graded broken stones or crushed gravels (5) are fully paved in the main body drainage grooves (301) of the first drainage building block (3) and the second drainage building block (4), and the graded broken stones or crushed gravels (5), the first drainage building block (3) and the second drainage building block (4) form a permeable drainage base layer; the structure of the drainage kerb (10) comprises a first drainage kerb (15) and a second drainage kerb (16) which are used for a straight line section, and a third drainage kerb (17) which is used for a flat curve section and a part where the straight line is connected with the flat curve; a through drainage groove (1501) is formed in the first drainage curb (15), and an arc sinking platform (1502) or a rectangular sinking platform (1510) is arranged at the top of the first drainage curb (15) close to one side of a sidewalk; the bottom of the arc-shaped sinking platform (1502) or the rectangular sinking platform (1510) is provided with a first water inlet (1502) for collecting rainwater on the surface of a sidewalk, the groove body of the first drainage curb (5) close to one side of the sidewalk is provided with a second water inlet (1504) for draining rainwater in a permeable drainage basic layer, and one side of the groove body of the first drainage curb (15) is provided with a water outlet (1505); the bottom elevation of the arc sinking platform (1502) or the rectangular sinking platform (1510) of the first drainage curb (15) is consistent with the elevation of the sidewalk edge road surface, and the water blocking body on one side of the sinking platform at the top of the first drainage curb (15) is higher than the surface of the sidewalk.
2. A sidewalk drainage structure according to claim 1, wherein: and a layer of impermeable geotextile is laid in the main body drainage groove (301) of the first drainage building block (3) and the second drainage building block (4), and graded broken stones or gravel stones (5) are laid on the impermeable geotextile.
3. A sidewalk drainage structure according to claim 1, wherein: and the contact surfaces among the drainage building blocks are bonded by adopting third cement mortar (12), and the first cement mortar leveling layer (6), the second cement mortar leveling layer (7) and the third cement mortar (12) adopt cement mortar with the strength grade not lower than M7.5.
4. A sidewalk drainage structure according to claim 1, wherein: each structural layer of the sidewalk is a one-way drainage cross slope facing one side of the drainage kerb (10), and the one-way drainage cross slope adopts a cross slope of 1% -2%; the material of the grid fence (11) is stainless steel metal, galvanized metal or hard plastic material, and the diameter of each grid in the grid fence (11) is smaller than the requirement of the minimum particle size in graded crushed stone or gravel (5).
5. A sidewalk drainage structure according to claim 1, wherein: the permeable drainage surface layer of the sidewalk drainage structure is formed by paving 3-6 cm of water permeable bricks (13) with the compression strength grade not lower than C30 and water permeable blind road bricks (2), a fourth cement mortar leveling layer (14) with the strength grade not lower than M7.5 of 2-3 cm is arranged below the water permeable bricks (13) and the water permeable blind road bricks (2), a permeable drainage base layer consisting of a plurality of first drainage building blocks (3), second drainage building blocks (4) and graded broken stones or gravel (5) is arranged below the fourth cement mortar leveling layer (14), a second cement mortar leveling layer (7) with the strength grade not lower than M7.5 of 2-3 cm is arranged below the permeable drainage base layer, the part below the second cement mortar leveling layer (7) adopts a concrete cushion (8) with the strength of 4-6 cm and not less than C15, and a compacted soil foundation (9) with the compaction degree of not less than 90% is arranged below the concrete cushion (8).
6. A sidewalk drainage structure according to claim 1, wherein: a first filter screen (1506) and a second filter screen (1507) are respectively arranged at the first water inlet (1502) and the second water inlet (1504) of the first drainage curb (15), and a drainage pipe (1508) communicated with a rainwater pipeline is arranged at a drainage port (1505) at the bottom of the groove body of the first drainage curb (15); the first drainage curb (15) is of a prefabricated reinforced concrete structure with the strength grade not lower than C25, and fifth cement mortar (18) with the strength not lower than M7.5 is used for bonding and leveling at the bottom of the first drainage curb (15) and the cross section between the drainage curbs; the first drainage curb (15) and the second drainage curb (16) of straight line section carry out the interval setting, set up the interval and set up first drainage curb (15) of a department for every 3~5 meters.
7. A combined drainage method using the walkway drainage construction according to any one of claims 1 to 6, comprising the steps of:
1) an excavation sideline of the sidewalk and the curb is released on site, and excavation or replacement filling treatment is carried out after surface cleaning is carried out on the ground;
2) paving a concrete cushion layer (8) with the thickness of 4-6 cm and the strength of not less than C15 and a second cement mortar leveling layer (7) with the thickness of 2-3 cm in sequence according to a conventional concrete construction process;
3) paving a first drainage block (3) and a second drainage block (4) along the width of a sidewalk and the advancing direction of the sidewalk, wherein the first drainage block (3) is paved at a position close to one side of a drainage curb stone (10), the second drainage block (4) is paved at any other position on the sidewalk except for the position close to one side of the drainage curb stone (10), and the water flow direction in a main body drainage groove (301) of each drainage block faces to the position of the drainage curb stone (10);
4) a grid fence (11) is arranged in the first drainage block (3), and graded broken stones or gravel stones (5) are fully paved in a main body drainage groove (301) of each drainage block;
5) paving a first drainage curb stone (15), a second drainage curb stone (16) and a third drainage curb stone (17) along the advancing direction of the sidewalk, and controlling the bottom elevation of a second water inlet (1504) of the three drainage curb stones to be consistent with the bottom elevation of a main body drainage groove (301) of a first drainage block (3) during paving; the first drainage kerbs (15) of the straight line section are arranged at one position every 3-5 meters, and the flat curve section and the joint of the straight line and the flat curve are independently drained by the third drainage kerbs (17);
6) when a first sidewalk permeable drainage surface layer is paved, firstly constructing permeable concrete surface layers on two sides of the blind road permeable brick (2), paving a first cement mortar leveling layer (6) below the permeable blind road brick (2) after the strength of the permeable concrete surface layers on the two sides meets the requirement, and then paving the permeable blind road brick (2); when a second sidewalk seepage drainage surface layer is paved, a fourth cement mortar leveling layer (14) is paved on a seepage drainage base layer, and then water permeable bricks (13) and water permeable blind road bricks (2) are paved on the fourth cement mortar leveling layer (14).
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| CN113550199A (en) * | 2021-07-30 | 2021-10-26 | 广东中隆建业建设有限公司 | Lawn road paving structure and paving method thereof |
| CN113931035A (en) * | 2021-09-10 | 2022-01-14 | 中铁八局集团昆明铁路建设有限公司 | Assembly type curb rainwater collecting system and construction method thereof |
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| JP3137135U (en) * | 2007-08-13 | 2007-11-15 | 孝典 納 | Curb stone in drain pipe |
| CN204919572U (en) * | 2015-08-17 | 2015-12-30 | 南京金埔园林股份有限公司 | Concrete block permeates water with unhurried current purification performance |
| CN209759918U (en) * | 2019-02-01 | 2019-12-10 | 云南省建筑科学研究院 | Road surface structure suitable for sponge city |
| CN110387782B (en) * | 2019-08-21 | 2021-06-15 | 广州市第二市政工程有限公司 | Curb of assembled self-drainage asphalt pavement and construction method thereof |
| CN211199978U (en) * | 2019-11-09 | 2020-08-07 | 上海市浦东新区建设(集团)有限公司 | Pavement paving structure for permeable sidewalk |
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