CN113981763A - Sidewalk construction method suitable for sponge city in collapsible loess area - Google Patents

Abstract

The invention discloses a sidewalk construction method suitable for a sponge city in a collapsible loess area, which comprises the steps of constructing a sidewalk roadbed, paving an anti-seepage geotextile on the sidewalk roadbed, installing a left-column curb on the outer side of the sidewalk roadbed, installing a square concrete backrest on the right side of the left-column curb, turning over the edge of the anti-seepage geotextile for 90 degrees to cover the right side of the square concrete backrest, installing a right-column curb on the anti-seepage geotextile on the inner side of the sidewalk roadbed, pouring an arc-shaped concrete backrest on the right side of the right-column curb through a one-step forming device, installing a longitudinal water permeable pipe above the anti-seepage geotextile of the sidewalk roadbed, pouring water permeable concrete on the sidewalk roadbed between the left-column curb and the right-column curb, and paving sidewalk bricks and blind bricks above the water permeable concrete. The invention has the advantages of low labor intensity, good construction quality, high construction efficiency, economy, environmental protection and the like.

Description

Sidewalk construction method suitable for sponge city in collapsible loess area

Technical Field

The invention relates to the technical field of sidewalk construction, in particular to a sidewalk construction method suitable for a sponge city in a collapsible loess area.

Background

At present, along with the continuous acceleration of the urbanization process, the urban scale is continuously enlarged, and the proportion of the urban hard pavement is greatly increased. The hard pavement has the advantages of being neat and durable, but has the conditions of water impermeability, easy water accumulation and the like, so that the urban flood control pressure is aggravated, water resources cannot be effectively recycled, the water resources are wasted continuously, and in addition, the surface temperature can be increased to generate the urban heat island effect. Neotype full water route top-down that passes through is the structure of permeating water, can not influence the stability of road bed and road surface structure when the rainwater infiltrates, can alleviate urban waterlogging problem to a certain extent. However, the structure is complex, the pavement is complicated, the construction cost is high, and the method cannot be applied to collapsible loess areas.

Disclosure of Invention

In order to solve the problems, the invention provides a safe and reliable sidewalk construction method suitable for a sponge city in a collapsible loess area, which has low loss and short construction period, and the following technical scheme can be adopted:

the invention relates to a sidewalk construction method suitable for a sponge city in a collapsible loess area, which comprises the following steps:

firstly, constructing a pedestrian road subgrade;

secondly, paving anti-seepage geotextile on the roadbed of the sidewalk;

thirdly, mounting a left-row curb on the outer side of the sidewalk roadbed, mounting a square concrete backrest on the right side of the left-row curb, and folding the edge of the impermeable geotextile by 90 degrees to cover the right side of the square concrete backrest;

fourthly, mounting a right-row curb on the anti-seepage geotextile on the inner side of the sidewalk roadbed, and pouring an arc-shaped concrete backrest positioned on the right side of the right-row curb through a one-step forming device;

fifthly, installing a longitudinal permeable pipe above the impermeable geotextile of the sidewalk roadbed;

sixthly, pouring pervious concrete on the sidewalk subgrade between the left and right rows of the curb stones;

and seventhly, paving sidewalk bricks and blind sidewalk bricks above the pervious concrete.

The top surface of the sidewalk subgrade is of a cross slope structure inclining downwards from inside to outside.

The longitudinal permeable pipe is arranged on a cross slope structure close to the square concrete backrest.

The top surfaces of the sidewalk bricks and the blind road bricks are flush with the top surfaces of the left-row kerbstones and the right-row kerbstones.

And 1, the thickness of 3cm is arranged between the sidewalk brick, the blind sidewalk brick and the pervious concrete: 3, cement mortar.

The one-step forming device comprises

The pouring part is used for storing concrete slurry and is provided with a feeding hole and a discharging hole;

the forming part is arranged below the pouring part and is provided with an arc panel matched with the design size of the arc concrete backrest and an end plate vertical to the right curb, and the arc panel is provided with a material receiving port used for connecting the pouring part;

and the clamping part is arranged on the left side of the forming part, is used for fixing the forming part on the right-row curb, and is provided with a first clamping piece positioned on the right side surface of the right-row curb and a second clamping piece positioned on the left side surface of the right-row curb.

The pouring part is positioned at the top of the cambered panel and is close to the end plate, the pouring part is a conical hopper which is formed by four side plates in a surrounding mode, and one side plate is a vertical plate which is attached to the right side face of the right-row curb stone.

The first clamping piece is a vertical folded edge formed by upwards extending the top of the cambered plate, and the second clamping piece is a clamping arm extending from the first clamping piece or the pouring part to the left side surface of the right-row curb; the forming device further comprises a moving part, wherein the moving part is used for enabling the forming part to move longitudinally along the curb stones on the right row and is provided with a push rod arranged at the top of the cambered plate, a first roller arranged at the bottom of the cambered plate, a second roller and a third roller arranged at the end part of the clamping arm.

The push rod is arranged on the rear side of the pouring part, the end part of the push rod is hinged with the cambered plate, and the middle part of the push rod is connected with the lifting rod arranged on the cambered plate.

The curb stone rapid loading and transporting machine comprises a curb stone rapid loading and transporting machine body, wherein the curb stone rapid loading and transporting machine body comprises a left curb stone rapid loading and transporting machine body and a right curb stone rapid loading and transporting machine body

The supporting part comprises an X-direction sleeve and a Y-direction supporting rod arranged on the X-direction sleeve, wherein the X-direction sleeve is internally provided with the X-direction supporting rod, the X-direction supporting rod is provided with a bearing end and a pushing end, and the bearing end and the pushing end are both positioned on the outer side of the X-direction sleeve; a Y-direction sleeve is arranged on the Y-direction supporting rod; positioning bolts are arranged between the Y-direction sleeve and the Y-direction support rod and between the X-direction sleeve and the X-direction support rod;

the carrying part is connected with the supporting part and comprises a Z-direction connecting rod arranged at the tail end of the Y-direction sleeve, and two ends of the Z-direction connecting rod are respectively provided with a travelling wheel;

the loading part is arranged at the bearing end and comprises a Z-direction supporting beam, and a pair of hanging clamps is arranged on the Z-direction supporting beam.

The sidewalk construction method suitable for the sponge city in the collapsible loess area improves construction efficiency and construction cost by optimizing sidewalk structures, improving paving modes and improving construction tools, and is not only permeable, but also capable of avoiding waterlogging and very suitable for construction of the sponge city in the collapsible loess area. Compared with the traditional construction method, the method has the advantages of low labor intensity, good construction quality, high construction efficiency, economy, environmental protection and the like.

Drawings

Fig. 1 is a schematic structural view of the sidewalk according to the present invention (the sidewalk roadbed is omitted).

Fig. 2 is a top view of fig. 1.

FIG. 3a is a schematic structural view of a one-shot molding apparatus according to the present invention.

Fig. 3b is a left side view of fig. 3 a.

Fig. 3c is a top view of fig. 3 a.

Fig. 4a is a schematic structural view of the rapid curb loader of the present invention.

Fig. 4b is a left side view of fig. 4 a.

Fig. 4c is a top view of fig. 4 a.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the drawings, and the embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific construction processes are given, but the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1 to 4c, the construction method of the sidewalk suitable for the sponge city in the collapsible loess area of the present invention includes the following steps:

firstly, constructing a sidewalk subgrade, wherein the top surface of the sidewalk subgrade is of a cross slope structure which inclines downwards from inside to outside in order to prevent water flow from being gathered.

Secondly, laying low-density polyethylene anti-seepage geotextile 1 on the roadbed of the sidewalk, wherein the geotextile is used for preventing seepage water under the pavement from flowing into the structure of the sidewalk and further soaking the roadbed of the sidewalk to cause adverse phenomena such as roadbed collapse; the outer edge of the impermeable geotextile 1 is positioned at a certain distance outside the roadbed of the sidewalk.

Third, the left curb 201 and the square concrete back 202 are installed. Wherein, the left side curbstone 201 adopts the granite of machine cutting, and square concrete back 202 is the prefabricated construction. During construction, a left-row curb 201 is installed on the outer side of a sidewalk roadbed, a square concrete backrest 202 is installed on the right side of the left-row curb 201, and then the edge of the impermeable geotextile 1 is folded by 90 degrees and coated on the right side face of the square concrete backrest 202;

and fourthly, installing the right curb 301 and the arc-shaped concrete backrest 302. Wherein, the right-row curb 301 adopts machine-cut granite, and the arc concrete backrest 302 is a cast-in-place structure. During construction, the right-row curb 301 is installed on the impermeable geotextile 1 on the inner side of the sidewalk roadbed, and then the arc-shaped concrete backrest 302 positioned on the right side of the right-row curb 301 is cast in sections through the one-step forming device K.

Fifthly, a longitudinal permeable pipe 4 is installed on a cross slope structure of a sidewalk roadbed close to the square concrete backrest 202, the longitudinal permeable pipe 4 is located above the anti-seepage geotextile 1, when seepage water flows to the permeable pipe 4 along the cross slope under the pavement, the seepage water can permeate the permeable pipe 4 and flow to a drainage pipe along the permeable pipe 4, and the purpose of sidewalk drainage is achieved.

And sixthly, pouring permeable concrete 5 on the sidewalk roadbed between the left kerb 201 and the right kerb 301, wherein the permeable concrete 5 has certain strength and can bear proper load, and meanwhile, the permeable concrete has the characteristics of high porosity, good water permeability and the like, rainwater and the like can permeate to the top of the impermeable geotextile 1 through the gaps of the sidewalk bricks and the permeable concrete 5 and then are collected into a drain pipe through the permeable pipe 4.

Seventhly, after the construction of the pervious concrete 5 is finished, watering and maintaining are carried out, and after the design requirement is met, 1 which is 3cm thick is laid on the pervious concrete: 3, cement mortar 6, and then, installing sidewalk bricks 7 and blind sidewalk bricks 8. The blind sidewalk bricks 8 are longitudinally arranged close to the inner side of the sidewalk, and the top surfaces of the sidewalk bricks 7 and the blind sidewalk bricks 8 are flush with the top surfaces of the left-row curb stones 201 and the right-row curb stones 301.

In order to realize the rapid construction of the arc-shaped concrete backrest 302 and achieve the purposes of continuous pouring, one-step forming, consistent appearance of the arc-shaped surface of the backrest after forming, reliable quality and better overall effect, a specially-made one-step forming device K is used in the embodiment and comprises a pouring part, a forming part and a moving part.

Specifically, the portion of pouring is used for saving concrete slurry, and it is the toper hopper K1 that is enclosed by four curb plates, and the top is the feed inlet, and the bottom is the discharge gate, and one of them curb plate is vertical board, conveniently attaches in curb 301 right flank in right side, and the curb plate rather than the relative then is the hang plate of easy unloading. The tapered hopper K1 is mounted above and at one end of the forming section. The forming part is provided with an arc panel K201 matched with the designed size of the arc concrete backrest 302 and an end plate K202 perpendicular to the right row of curb stones 301, and the forming part is arranged between the ground and the right row of curb stones 301 and matched with poured backrest concrete to form a section of closed pouring cavity. The arc panel K201 is provided with a material receiving opening for connecting the conical hopper K1, so that continuous feeding is facilitated. Clamping portion is used for fixing the shaping portion on right side curb 301, and it is located the shaping portion left side, including being located first holder and the second holder of right side curb 301 both sides respectively, the former is the vertical hem K301 that upwards extends and form by the cambered plate top, and the latter is for extending to U type or L type centre gripping arm K302 of right side curb 301 left surface by vertical hem K301 or toper hopper K1, and both cooperate, can fix the shaping portion. In order to move the molding portion in the longitudinal direction along the right-side kerb 301, a moving portion constituted by a pusher K401, a first roller K402, a second roller K403, a third roller K404, and the like is further attached. Above-mentioned push rod K401 is located toper hopper K1 rear side, and for the workman's operation of different heights, push rod K401 links to each other with the pivot of installing at cambered plate K201 top is articulated, simultaneously, still installs lifter K405 (can adopt spiral sleeve etc.) on cambered plate K201, and its top links to each other with push rod K401's middle part is articulated, can transfer suitable height with push rod K401 and fix. The first roller K402 is installed at the bottom right side of the cambered plate K201, and is usually arranged in a plurality at intervals, and each roller is connected with the ground. The second roller K403 and the third roller K404 are both mounted at the tail end of the clamping arm K302 through a connecting rod, wherein the second roller K403 is in contact with the ground, and the third roller K404 is in contact with the left side face of the right-row curb 301. Furthermore, a hanging ring K406 is also arranged on the end plate K202, and a pull rope can be arranged in the pulling forming part in a penetrating way.

When the clamping arm K302 is placed on the left side face of the right curb 301, at the moment, the first roller K402 and the second roller K403 are connected with the ground, the vertical folding edge K301 and the third roller K404 are tightly attached to the side wall of the right curb 301, so that the top of the arc panel K201 is tightly attached to the right curb 301, and the bottom of the arc panel K201 is connected with the ground. In the process, the conical hopper K1 should be timely supplemented with concrete.

Because the curb 201 and the curb 301 in the left side are big in size, heavy, artifical transport and installation are very difficult, not only need consume great manpower, material resources, and work efficiency is low, and it is damaged to take place to collide with easily in the handling moreover, influences curb outward appearance and the whole effect of road, consequently, adopts the quick shipment machines J of curb to carry out short distance transport in this embodiment.

The quick curb loader J comprises a supporting part, a carrying part and a loading part. Specifically, the supporting part comprises an X-direction sleeve J101 and a Y-direction supporting rod J102 welded with the X-direction sleeve J101, an X-direction supporting rod J103 is installed in the X-direction sleeve J101, the front part of the X-direction supporting rod J103 is a bearing end, the rear part of the X-direction supporting rod J103 is a pushing end, and the bearing end and the pushing end are both located outside the X-direction sleeve J101; a Y-direction sleeve J104 is arranged on the Y-direction support rod J102; positioning bolts J105 are respectively arranged between the Y-direction sleeve J104 and the Y-direction support rod J102, and between the X-direction sleeve J101 and the X-direction support rod J103. The carrying part is connected with the supporting part and comprises a Z-direction connecting rod J201 welded at the tail end of the Y-direction sleeve J104, two ends of the Z-direction connecting rod J201 are respectively provided with a walking wheel J202, and in order to keep balance, the walking wheels J202 are equal to the Y-direction sleeve J104 in distance. In order to improve the structural stability, a first diagonal reinforcing brace J106 is welded between the X-direction sleeve J101 and the Y-direction support rod J102, and a second diagonal reinforcing brace J203 extending to the Y-direction sleeve J104 is welded on the Z-direction connecting rod J201. For the convenience of operation, a holding rod J107 is welded to the pushing end of the X-direction support rod J103. The loading part is positioned at the bearing end of the X-direction support rod J103 and comprises a Z-direction support beam J301 and a pair of hanging clamps J302 arranged on the Z-direction support beam. In order to facilitate disassembly, assembly and storage, a first lifting hook J108 is mounted at the bearing end of the X-direction supporting rod J103, and a hanging ring used for being connected with the first lifting hook J108 is arranged at the center of the Z-direction supporting beam J301. A plurality of pairs of second lifting hooks J303 for hanging the lifting clamp J302 are symmetrically arranged on the Z-direction supporting beam J301, and the lifting clamp J302 can be hung by selecting the appropriate second lifting hooks J303 according to curbstones with different sizes. Further, a buffering anti-slip layer (e.g., a wear-resistant rubber layer with anti-slip particles) is disposed on the clamping surface of each suspension clamp J302.

When the device is used, the relative positions of the Y-direction sleeve J104 and the Y-direction support rod J102 are adjusted according to the size of the kerbstone, and the kerbstone is still in a suspended state when the X-direction support rod J103 is in a horizontal position; then, according to the weight of the curb and the lever principle, the relative positions of the X-direction support rod J103 and the X-direction sleeve J101 are adjusted, so that an operator can push the curb to move more conveniently in a labor-saving manner; then, the suspension clamp J302 is hung on a suitable second hook J303, and after clamping the curb, the curb is transported to a specified position.

The kerbstone rapid loading and transporting machine J is suitable for short-distance transportation of the kerbstones, clamps the kerbstones through the hanging clamps arranged on the vehicle body, is rapid, convenient and firm, and improves the transportation efficiency of the kerbstones; secondly, the hoisting position and the hoisting gravity center of the vehicle body can be conveniently adjusted, the actual requirements of operators with different body types are met, and the labor intensity is reduced; because the transportation process curb gesture is firm, easily control, consequently, can avoid taking place to collide with, improved the whole impression quality of curb installation.

It should be noted that in the description of the present invention, terms of orientation or positional relationship such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Claims (10)

1. A sidewalk construction method suitable for a collapsible loess area sponge city is characterized by comprising the following steps: the method comprises the following steps:

firstly, constructing a pedestrian road subgrade;

secondly, paving anti-seepage geotextile on the roadbed of the sidewalk;

thirdly, mounting a left-row curb on the outer side of the sidewalk roadbed, mounting a square concrete backrest on the right side of the left-row curb, and folding the edge of the impermeable geotextile by 90 degrees to cover the right side of the square concrete backrest;

fourthly, mounting a right-row curb on the anti-seepage geotextile on the inner side of the sidewalk roadbed, and pouring an arc-shaped concrete backrest positioned on the right side of the right-row curb through a one-step forming device;

fifthly, installing a longitudinal permeable pipe above the impermeable geotextile of the sidewalk roadbed;

sixthly, pouring pervious concrete on the sidewalk subgrade between the left and right rows of the curb stones;

and seventhly, paving sidewalk bricks and blind sidewalk bricks above the pervious concrete.

2. A sidewalk construction method suitable for a collapsible loess area sponge city according to claim 1, wherein: the top surface of the sidewalk subgrade is of a cross slope structure which inclines downwards from inside to outside.

3. A sidewalk construction method suitable for a collapsible loess area sponge city according to claim 2, wherein: the longitudinal permeable pipe is arranged on a cross slope structure close to the square concrete backrest.

4. A sidewalk construction method suitable for a collapsible loess area sponge city according to claim 1, wherein: the top surfaces of the sidewalk bricks and the blind road bricks are flush with the top surfaces of the left-row kerbstones and the right-row kerbstones.

5. A sidewalk construction method suitable for a collapsible loess area sponge city according to claim 1, wherein: and 1, the thickness of 3cm is arranged between the sidewalk brick, the blind sidewalk brick and the pervious concrete: 3, cement mortar.

6. A sidewalk construction method suitable for a collapsible loess area sponge city according to claim 1, wherein: the one-step forming device comprises

The pouring part is used for storing concrete slurry and is provided with a feeding hole and a discharging hole;

the forming part is arranged below the pouring part and is provided with an arc panel matched with the design size of the arc concrete backrest and an end plate vertical to the right curb, and the arc panel is provided with a material receiving port used for connecting the pouring part;

and the clamping part is arranged on the left side of the forming part, is used for fixing the forming part on the right-row curb, and is provided with a first clamping piece positioned on the right side surface of the right-row curb and a second clamping piece positioned on the left side surface of the right-row curb.

7. The sidewalk construction method for the sponge city in the collapsible loess area according to claim 6, wherein: the pouring part is positioned at the top of the cambered panel and is close to the end plate, the pouring part is a conical hopper which is formed by four side plates in a surrounding mode, and one side plate is a vertical plate which is attached to the right side face of the right-row curb stone.

8. The sidewalk construction method for the sponge city in the collapsible loess area according to claim 6, wherein: the first clamping piece is a vertical folded edge formed by upwards extending the top of the cambered plate, and the second clamping piece is a clamping arm extending from the first clamping piece or the pouring part to the left side surface of the right-row curb; the forming device further comprises a moving part, wherein the moving part is used for enabling the forming part to move longitudinally along the curb stones on the right row and is provided with a push rod arranged at the top of the cambered plate, a first roller arranged at the bottom of the cambered plate, a second roller and a third roller arranged at the end part of the clamping arm.

9. A sidewalk construction method suitable for a collapsible loess area sponge city according to claim 8, wherein: the push rod is arranged on the rear side of the pouring part, the end part of the push rod is hinged with the cambered plate, and the middle part of the push rod is connected with the lifting rod arranged on the cambered plate.

10. A sidewalk construction method suitable for a collapsible loess area sponge city according to claim 1, wherein: the curb stone rapid loading and transporting machine comprises a curb stone rapid loading and transporting machine body, wherein the curb stone rapid loading and transporting machine body comprises a left curb stone rapid loading and transporting machine body and a right curb stone rapid loading and transporting machine body

The supporting part comprises an X-direction sleeve and a Y-direction supporting rod arranged on the X-direction sleeve, wherein the X-direction sleeve is internally provided with the X-direction supporting rod, the X-direction supporting rod is provided with a bearing end and a pushing end, and the bearing end and the pushing end are both positioned on the outer side of the X-direction sleeve; a Y-direction sleeve is arranged on the Y-direction supporting rod; positioning bolts are arranged between the Y-direction sleeve and the Y-direction support rod and between the X-direction sleeve and the X-direction support rod;

the carrying part is connected with the supporting part and comprises a Z-direction connecting rod arranged at the tail end of the Y-direction sleeve, and two ends of the Z-direction connecting rod are respectively provided with a travelling wheel;

the loading part is arranged at the bearing end and comprises a Z-direction supporting beam, and a pair of hanging clamps is arranged on the Z-direction supporting beam.

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