CN215829185U - A modified structure of the existing sidewalk - Google Patents

Abstract

A transformation structure of a current sidewalk comprises a blind road, wherein a curb is arranged at the edge, close to a roadway, of a region between the blind road and the roadway, and a plurality of tree pools are arranged in a surrounding manner of the region between the blind road and the roadway; the area between the blind sidewalk, the kerb and the tree pool sequentially comprises a soil base layer, a graded gravel layer, a sand-free water-permeable cement concrete layer, a water-permeable geotechnical material layer, a sand leveling layer and water-permeable bricks from bottom to top, wherein the graded gravel layer is laid on the soil base layer, the sand-free water-permeable cement concrete layer is laid on the graded gravel layer, the water-permeable soil material layer is laid on the sand-free water-permeable cement concrete layer, the sand leveling layer is laid on the water-permeable geotechnical material layer, and the water-permeable bricks are laid on the sand leveling layer; and a horizontal seepage and drainage pipe is laid in the soil foundation layer at the lower part of the graded gravel layer, and the bottom of the horizontal seepage and drainage pipe is communicated with a plurality of vertical seepage and drainage pipes. The improved structure of the sidewalk at the current situation is improved into a permeable pavement structure according to the requirements of the size of the sidewalk at the current situation and the indexes of sponge cities, and the permeation rate is improved.

Description

Current sidewalk transformation structure

Technical Field

The utility model relates to the technical field of road construction, in particular to a modified structure of a sidewalk in the current situation.

Background

Sidewalks refer to the portion of a road that is separated by curbs or guardrails and other similar facilities and is dedicated to pedestrian traffic, typically having a width of about four meters.

Drainage is often only considered to current pavement structure, through discharging into the both sides escape canal with the road surface rainwater, alleviates the rainwater pressure on pavement, but the dual rivers that come from lane and pavement need be born to the escape canal, often can cause ponding because the drainage is not urgent in time.

Along with the development of society, people have higher and higher requirements on urban roads, and in order to ensure the safety and comfort of sidewalks, prolong the service life of sidewalks, improve the requirements of pedestrian outgoing, urban sanitary environment and sponge urban indexes, the drainage structure of the sidewalks needs to be improved.

Disclosure of Invention

The utility model aims to provide a modified structure of a current sidewalk, which confirms that the modified structure needs to be modified into a permeable pavement structure according to the current sidewalk size and sponge city index requirements, and improves the permeation rate of the sidewalk.

In order to realize the purpose of the utility model, the technical scheme is as follows:

a reconstruction structure of a sidewalk under the current situation comprises a blind road, wherein a curb is arranged at the edge, close to a roadway, of a region between the blind road and the roadway, the curb is 20 cm higher than the pavement of the roadway, and a plurality of tree pools are surrounded in the region between the blind road and the roadway; the area between the sidewalk, the kerb and the tree pool sequentially comprises a soil base layer, a graded gravel layer, a sand-free permeable cement concrete layer, a permeable geotechnical material layer, a sand leveling layer and permeable bricks from bottom to top, wherein the graded gravel layer is laid on the soil base layer, the sand-free permeable cement concrete layer is laid on the graded gravel layer, the permeable soil material layer is laid on the sand-free permeable cement concrete layer, the sand leveling layer is laid on the permeable geotechnical material layer, the permeable bricks are laid on the sand leveling layer, the height of the tops of the permeable bricks is matched with the sidewalk, and the sidewalk design requirements are compounded; the water permeability coefficient of the water permeable brick is not less than 25mm/h, the porosity is preferably 20%, the water retention capacity is 10000Cc/m in a normal use state, the compressive strength is not less than Cc30, the flexural strength is not less than Cf4.0, the antiskid grade is R3, the corresponding antiskid performance index BPN is not less than 65, the paving width requirement of the water permeable brick is 0.2 cm-0.3 cm, and after paving, the dry lime fine sand is sprayed to seal the seam. And a horizontal seepage and drainage pipe is laid in the soil foundation layer at the lower part of the graded gravel layer, and the bottom of the horizontal seepage and drainage pipe is communicated with a plurality of vertical seepage and drainage pipes. During rainfall, rainwater can flow to the permeable pavement surface layer according to the cross slope of the sidewalk after falling to the original sidewalk structural layer, and then infiltration can be effectively improved due to the existence of the vertical infiltration and drainage pipe.

Further preferred is: the tree pool is surrounded by the barren rock. The tree pool is surrounded by the barren rock, and the tree pool is more beautiful and is easily surrounded.

Further preferred is: the transverse seepage and drainage pipe is also communicated with a seepage and drainage pipe extending to a rainwater port on the side of the roadway. The seepage and drainage pipe can drain part of the downward seepage water to the rainwater port.

Further preferred is: and the peripheries of the transverse seepage and drainage pipe and the vertical seepage and drainage pipe are paved with a permeable geotextile material wrapping layer. The setting of geotechnological material parcel layer that permeates water can more do benefit to the rainwater infiltration.

Further preferred is: the side of the blind road far away from the traffic lane is an original pedestrian lane structural layer. Whether the pavement structure layer is trimmed or not can be determined according to the condition of the original pavement structure layer. If the original sidewalk has the defects of sludge pumping, face brick damage and the like, synchronous transformation is needed. The side of the original sidewalk structural layer far away from the blind sidewalk is provided with a stone, and the stone is flush with the step bricks of the original sidewalk structural layer.

The improved structure of the sidewalk at the current situation confirms that the sidewalk structure needing to be improved into a permeable pavement structure according to the current situation sidewalk size and the sponge city index requirement, so that the traditional sidewalk has the required infiltration function in the sponge city, the infiltration rate of the sidewalk is improved, and the investment is small.

Drawings

Fig. 1 is a schematic structural view of a modified structure of the present sidewalk;

FIG. 2 is a schematic view taken along line A-A of FIG. 1;

the names corresponding to the sequence numbers in the figure are:

1. tree pool, 2, barren rock, 3, curb, 4, roadways, 5, inlet for stom water, 6, ooze the drain pipe, 7, the brick that permeates water, 8, vertical infiltration drain pipe, 9, horizontal infiltration drain pipe, 10, the blind road, 11, former pedestrian way structural layer, 12, sand screed-coat, 13, the geotechnological material layer that permeates water, 14, no sand cement concrete layer that permeates water, 15, graded gravel layer, 16, the soil matrix layer, 17, the geotechnological material parcel layer that permeates water.

Detailed Description

In order to make the technical solutions and advantages of the present application clearer, the following describes the technical solutions clearly and completely with reference to the embodiments.

Example 1

A reconstruction structure of a current sidewalk comprises a blind road 10, wherein a curb 3 is arranged at the edge, close to a roadway 4, of a region between the blind road 10 and the roadway 4, and a plurality of tree pools 1 are surrounded by a boulder 2 in the region between the blind road 10 and the roadway 4; the area between the blind sidewalk 10, the kerbstone 3 and the tree pool 1 sequentially comprises a soil base layer 16, a graded gravel layer 15, a sand-free permeable cement concrete layer 14, a permeable soil material layer 13, a sand leveling layer 12 and permeable bricks 7 from bottom to top, wherein the graded gravel layer 15 is laid on the soil base layer 16, the sand-free permeable cement concrete layer 14 is laid on the graded gravel layer 15, the permeable soil material layer 13 is laid on the sand-free permeable cement concrete layer 14, the sand leveling layer 12 is laid on the permeable soil material layer 13, the permeable bricks 7 are laid on the sand leveling layer 12, the height of the tops of the permeable bricks 7 is matched with that of the blind sidewalk 10, and the design requirements of the blind sidewalk 10 are compounded; a horizontal seepage and drainage pipe 9 is laid in the soil base layer 16 at the lower part of the graded gravel layer 15, and the bottom of the horizontal seepage and drainage pipe 9 is communicated with a plurality of vertical seepage and drainage pipes 8.

Example 2

A reconstruction structure of a current sidewalk comprises a blind road 10, wherein a curb 3 is arranged at the edge, close to a roadway 4, of a region between the blind road 10 and the roadway 4, and a plurality of tree pools 1 are surrounded by a boulder 2 in the region between the blind road 10 and the roadway 4; the side of the blind road 10 far away from the roadway 4 is an original pedestrian road structural layer 11. The side, far away from the blind sidewalk 10, of the original sidewalk structural layer 11 is provided with a strip stone 2 in a blocking mode, and the strip stone 2 is flush with the step bricks of the original sidewalk structural layer 11. The area between the blind sidewalk 10, the kerbstone 3 and the tree pool 1 sequentially comprises a soil base layer 16, a graded gravel layer 15, a sand-free permeable cement concrete layer 14, a permeable soil material layer 13, a sand leveling layer 12 and permeable bricks 7 from bottom to top, wherein the graded gravel layer 15 is laid on the soil base layer 16, the sand-free permeable cement concrete layer 14 is laid on the graded gravel layer 15, the permeable soil material layer 13 is laid on the sand-free permeable cement concrete layer 14, the sand leveling layer 12 is laid on the permeable soil material layer 13, the permeable bricks 7 are laid on the sand leveling layer 12, the height of the tops of the permeable bricks 7 is matched with that of the blind sidewalk 10, and the design requirements of the blind sidewalk 10 are compounded; a horizontal seepage and drainage pipe 9 is laid in the soil base layer 16 at the lower part of the graded gravel layer 15, and the bottom of the horizontal seepage and drainage pipe 9 is communicated with a plurality of vertical seepage and drainage pipes 8. The periphery of the horizontal seepage and drainage pipe 9 and the vertical seepage and drainage pipe 8 is paved with a permeable earthen material wrapping layer 17. The transverse seepage and drainage pipe 9 is also communicated with a seepage and drainage pipe 6 which extends to the rainwater port 5 at the side of the roadway 4.

The above description is not intended to limit the present application, and the present application is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions or substitutions within the spirit and scope of the present application.

Claims (6)

1. An existing sidewalk reconstruction structure, comprising a blind road (10), and a curb (3) is provided on the edge of the area between the blind road (10) and the roadway (4) close to the roadway (4). ), the area between the blind road (10) and the roadway (4) is surrounded by a plurality of tree pools (1); it is characterized in that: between the blind road (10) and the curb stone (3) and the tree pool (1) The area from bottom to top is the soil base layer (16), the graded gravel layer (15), the non-sand permeable cement concrete layer (14), the permeable geotechnical material layer (13), the sand leveling layer (12) and the permeable brick layer. (7), the graded gravel layer (15) is laid on the soil base (16), the sand-free permeable cement concrete layer (14) is laid on the graded gravel layer (15), and the permeable geotechnical material layer (13) is laid On the non-sand permeable cement concrete layer (14), the sand leveling layer (12) is laid on the permeable geotechnical material layer (13), the permeable bricks (7) are laid on the sand leveling layer (12); the graded gravel layer ( 15) A lateral seepage and drainage pipe (9) is laid in the lower soil base layer (16), and a plurality of vertical seepage and drainage pipes (8) are connected to the bottom of the transverse seepage and drainage pipe (9). 2 . The reconstructed structure of the existing sidewalk according to claim 1 , wherein the tree pool ( 1 ) is surrounded by strip stones ( 2 ). 3 . 3. The reconstruction structure of the existing sidewalk according to claim 1, characterized in that: the lateral seepage and drainage pipe (9) is also connected with the seepage at the rainwater inlet (5) extending to the side of the roadway (4). Drain (6). 4. The reconstruction structure of the existing sidewalk according to claim 1, characterized in that: the outer periphery of the lateral seepage and drainage pipes (9) and the vertical seepage and drainage pipes (8) are covered with permeable geotechnical material wrapping layers (17) . The reconstruction structure of the existing sidewalk according to claim 1, characterized in that: the side of the blind road (10) away from the roadway (4) is the original sidewalk structure layer (11). 6. The reconstruction structure of the existing sidewalk according to claim 5, characterized in that: the side of the original sidewalk structure layer (11) away from the blind road (10) is blocked with a stone (2), and the stone (2) It is flush with the step bricks of the original sidewalk structure layer (11).

Images