CN219586474U

CN219586474U - Fine-grained soil embankment with additional embankment top grid seepage grooves and edge drainage pipes

Info

Publication number: CN219586474U
Application number: CN202320411982.8U
Authority: CN
Inventors: 刘士远; 矫震; 于沛然; 赵锐; 王晨; 纪伦
Original assignee: HEILONGJIANG HIGHWAY SURVEY AND DESIGN INSTITUTE
Current assignee: HEILONGJIANG HIGHWAY SURVEY AND DESIGN INSTITUTE
Priority date: 2023-03-07
Filing date: 2023-03-07
Publication date: 2023-08-25
Anticipated expiration: 2033-03-07

Abstract

The utility model discloses a fine-grained soil embankment with an additional embankment top grid infiltration trench and an edge drain pipe, which comprises a surface layer, a base layer, a subbase layer, a pavement aggregate cushion layer, an embankment top grid infiltration trench and a side slope, wherein the base layer is arranged at the bottom of the surface layer, the subbase layer is arranged at the bottom of the base layer, the pavement aggregate cushion layer is arranged at the bottom of the subbase layer, the embankment top grid infiltration trench is arranged at the bottom of the pavement aggregate cushion layer, and the embankment top grid infiltration trench comprises longitudinal crushed stone infiltration trenches and transverse crushed stone infiltration trenches which are arranged in an array manner. The utility model realizes the efficient drainage of the road granule pad layer of the road width inside the expressway superhigh section curve in the heavy freezing area, prolongs the service life of the road, is suitable for the expressway and the primary expressway, and mainly aims at expanding the road width inside the expressway superhigh section curve with bidirectional 6-8 lanes and the road width inside the expressway with 8 lanes, thereby increasing less construction cost, having low cost, lower construction engineering difficulty and high practicability.

Description

Fine-grained soil embankment with additional embankment top grid seepage grooves and edge drainage pipes

Technical Field

The utility model relates to the technical field of fine-grained soil embankments, in particular to a fine-grained soil embankment with a embankment top grid seepage ditch and an edge drain pipe.

Background

At present, granular material cushion layers such as gravel, broken stone and the like are usually arranged on road width fine soil embankment sections on the inner sides of heavy freezing areas, high-speed and first-grade roads and superhigh-section curves, and have the functions of water isolation, water storage, water drainage (which cannot be expected due to unreasonable structure) and frost resistance, but in fact, the granular material access base cannot resist rain wash, so that the whole collapse of the cushion layer edge and soil shoulders built by corresponding road surface structural layers can be caused. The road surface structure freeze thawing damage is big, and road bed frost heave, freeze thawing damage are general, have "heavy frozen district, highway super high section curve inboard road width road surface granule bed course drainage demand and pressure increase" and "road surface granule bed course is sealed and is unable drainage' problem on road surface structure layer and the fine particle soil between the road bed.

Disclosure of Invention

The utility model aims to solve the problems that in the prior art, the drainage requirement and the pressure increase of a road surface granular material cushion layer of an inner side road width of a super-high section curve of a highway are met, and the road surface granular material cushion layer is sealed between a road surface structural layer and a fine soil upper road bed and cannot drain water, and provides a fine soil embankment with a dyke top grid seepage groove and an edge drainage pipe.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a add fine grain soil embankment of dyke top net infiltration ditch and limit portion drain pipe, includes surface course, basic unit, underlayment, road surface aggregate bed course, dyke top net infiltration ditch, side slope, the basic unit sets up the bottom at the surface course, the underlayment sets up the bottom at the basic unit, road surface aggregate bed course sets up the bottom at the underlayment, dyke top net infiltration ditch sets up the bottom at road surface aggregate bed course, dyke top net infiltration ditch is including the vertical rubble infiltration ditch of arranging the setting and the horizontal rubble infiltration ditch of arranging the setting, vertical rubble infiltration ditch is crisscross setting perpendicularly with horizontal rubble infiltration ditch, and the slope sets up the limit portion at surface course, basic unit, road surface aggregate bed course, dyke top net infiltration ditch, the one end that horizontal rubble infiltration ditch is close to the side slope wears to be equipped with the water pipe, the water pipe runs through out the side slope.

As a further improvement of the utility model, the water permeable pipe is made of PVC pipe, and the diameter of the water permeable pipe is 10cm.

As a further improvement of the utility model, the length of the water outlet of the permeable pipe beyond the side slope is not less than 15cm.

As a further improvement of the utility model, the length of the part of the water permeable pipe positioned at the inner side of the transverse crushed stone infiltration trench is not less than 200cm.

As a further improvement of the utility model, the width and the height of the longitudinal crushed stone infiltration grooves and the transverse crushed stone infiltration grooves are 40cm.

As a further improvement of the utility model, the distance between adjacent longitudinal crushed stone infiltration grooves is not more than 660cm.

The utility model has the beneficial effects that:

1. the continuous downward water seepage capability and speed of the granular material cushion layer are enhanced, the pavement granular material cushion layer is kept relatively dry, and the functions of water isolation, water storage, water drainage and freezing resistance are comprehensively exerted.

2. The water temperature, strength and working state of the fine-grained soil road bed are kept good.

3. The pavement base layer and the whole pavement bed have higher self strength (strong load bearing capacity), slow strength decay and long fatigue period under the lower water content level.

4. Under the condition of better water temperature of roadbed and pavement, the effects of infiltration and freeze thawing damage in rainy seasons are weakened.

5. The road surface crack development and various indexes of the technical condition are slow, the road surface keeps better drainage capacity, the free water quantity of infiltration and downward flowing is at an acceptable level, the added engineering construction cost is less, the cost is low, the construction engineering difficulty is lower, and the practicability is high.

Drawings

FIG. 1 is a schematic side view of a fine soil embankment with an additional embankment top grid infiltration trench and side drainage pipes;

fig. 2 is a schematic top view structure of a dyke top grid infiltration trench and a permeable pipe of a fine soil embankment with a dyke top grid infiltration trench and an edge drain pipe added in the utility model.

In the figure: 1 surface layer, 2 base layer, 3 subbase layer, 4 road granule cushion layer, 5 dyke top grid infiltration trench, 6 longitudinal macadam infiltration trench, 7 transverse macadam infiltration trench, 8 water permeable pipe, 9 side slope.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to figures 1 and 2, a fine-grained soil embankment with a embankment top grid infiltration ditch and a side drain pipe is additionally arranged, the fine-grained soil embankment comprises a surface layer 1, a base layer 2, a subbase layer 3, a pavement aggregate cushion layer 4, an embankment top grid infiltration ditch 5 and a side slope 9, wherein the base layer 2 is arranged at the bottom of the surface layer 1, the subbase layer 3 is arranged at the bottom of the base layer 2, the pavement aggregate cushion layer 4 is arranged at the bottom of the subbase layer 3, the embankment top grid infiltration ditch 5 is arranged at the bottom of the pavement aggregate cushion layer 4, the embankment top grid infiltration ditch 5 comprises longitudinal crushed stone infiltration ditches 6 and transverse crushed stone infiltration ditches 7 which are arranged in an arrayed manner, the longitudinal crushed stone infiltration ditches 6 and the transverse crushed stone infiltration ditches 7 are vertically staggered, the gradient of the transverse crushed stone infiltration ditches 7 is 2%, the embankment top grid infiltration ditches 5 are arranged, the water temperature condition and the working state of the whole embankment bed are improved, and the bearing capacity and durability of the embankment are ensured; the water in the pavement granular material cushion layer 4 can continuously infiltrate and drain, so that the free underwater infiltration capacity in the pavement is accelerated; the functions of water isolation, water storage, water drainage and freezing resistance of the pavement granular material cushion layer 4 are enhanced; the side slope 9 is arranged at the side parts of the surface layer 1, the base layer 2, the subbase layer 3, the pavement granule cushion layer 4 and the embankment top grid infiltration trench 5, one end of the transverse broken stone infiltration trench 7, which is close to the side slope 9, is provided with a water permeable pipe 8 in a penetrating way, the water permeable pipe 8 penetrates out of the side slope 9, the gradient of the water permeable pipe 8 is 2%, and water in the pavement granule cushion layer 4 can be timely discharged out of the side slope 9, so that the water temperature condition and the working state of soil foundation around the pavement granule cushion layer are improved.

In the utility model, the permeable tube 8 is made of PVC, and the diameter of the permeable tube 8 is 10cm.

The length of the water outlet of the specific permeable pipe 8 exceeding the side slope 9 is not less than 15cm.

The length of the part of the specific permeable pipe 8 positioned at the inner side of the transverse crushed stone infiltration trench 7 is not less than 200cm.

The width and the height of the specific longitudinal crushed stone infiltration grooves 6 and the specific transverse crushed stone infiltration grooves 7 are 40cm.

The spacing between specific adjacent longitudinal crushed stone seepage grooves 6 is not more than 660cm.

The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.

Claims

1. The utility model provides a add fine grain soil embankment of dyke top net infiltration ditch and limit portion drain pipe, its characterized in that includes surface course (1), basic unit (2), underlayment (3), road surface aggregate bed course (4), dyke top net infiltration ditch (5), slope (9), basic unit (2) set up in the bottom of surface course (1), underlayment (3) set up in the bottom of basic unit (2), road surface aggregate bed course (4) set up in the bottom of underlayment (3), dyke top net infiltration ditch (5) set up in the bottom of road surface aggregate bed course (4), dyke top net infiltration ditch (5) are including the vertical rubble infiltration ditch (6) of arranging the setting and the horizontal rubble infiltration ditch (7) of arranging the setting, the slope of horizontal rubble infiltration ditch (7) is 2%, basic unit (2), underlayment (4), dyke top infiltration ditch (5) limit portion, slope (7) are close to side slope granule infiltration ditch (8) and are equipped with the permeable pipe (8) and are penetrated to side slope (8).

2. The fine soil embankment additionally provided with embankment top grid infiltration ditches and side drainage pipes according to claim 1, wherein the permeable pipes (8) are made of PVC pipes, and the diameter of the permeable pipes (8) is 10cm.

3. A fine soil embankment with added embankment top grid infiltration and side drainage pipes according to claim 1, characterized in that the length of the water outlet of the permeable pipe (8) beyond the side slope (9) is not less than 15cm.

4. A fine soil embankment with added dyke top grid infiltration and side drainage pipes according to claim 1, characterized in that the length of the permeable pipe (8) at the inner part of the transverse crushed stone infiltration (7) is not less than 200cm.

5. A fine soil embankment with added dyke top grid infiltration and side drainage pipes according to claim 1, characterized in that the width and height of the longitudinal crushed stone infiltration (6) and the transverse crushed stone infiltration (7) are both 40cm.

6. A fine-grained soil embankment with added dyke top grid infiltration and side drainage pipes according to claim 1, characterized in that the spacing between adjacent longitudinal crushed stone infiltration channels (6) is not more than 660cm.