CN216338824U

CN216338824U - Compound roadbed structure of high liquid limit clay

Info

Publication number: CN216338824U
Application number: CN202123097238.5U
Authority: CN
Inventors: 张建军; 陈喆; 徐凯; 罗文杰; 罗光明; 未元国
Original assignee: CCCC SHEC Dong Meng Engineering Co Ltd
Current assignee: CCCC SHEC Dong Meng Engineering Co Ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-04-19
Anticipated expiration: 2031-12-10

Abstract

The utility model discloses a high liquid limit clay composite roadbed structure, which relates to the technical field of composite roadbeds and comprises a ground, a 92 area, a 94 area, a 95 area and a pavement layer, wherein the 92 area, the 94 area, the 95 area and the pavement layer are sequentially paved above the ground from bottom to top to form a roadbed, the upper half part, the middle part and the lower half part of a drainage structure are respectively positioned at the same horizontal height with the 95 area, the 94 area and the 92 area, the length direction of the drainage structure is along the width direction of the roadbed, and two ends of the drainage structure are respectively positioned at two sides of the roadbed. According to the utility model, the water permeable holes I and the water permeable holes II are respectively formed in the two side surfaces of the flat tube, the inner cavity of the flat tube is filled with the gravel, and the outer side wall of the gravel is coated with the water permeable cloth, so that the water inside the 95 region, the 94 region and the 92 region can be quickly drained by the drainage structure, the strength of a roadbed is reduced due to the influence of water accumulation, and meanwhile, the gravel can be prevented from being deformed due to the compression of the flat tube.

Description

Compound roadbed structure of high liquid limit clay

Technical Field

The utility model relates to the technical field of composite roadbed, in particular to a high liquid limit clay composite roadbed structure.

Background

In daily life, people can often see that the pavement of some roads (whether primary roads or secondary roads) has diseases such as cracking, uplifting or sinking, slumping and the like, and particularly in some wet and rainy areas, the diseases are more prominent; the reason is that the design of the roadbed structure is unreasonable when the highway is constructed, and the high liquid limit soil used for paving the roadbed is not properly treated. High liquid limit soil water permeability is relatively poor, and difficult compaction when paving as the road bed material, and capillary phenomenon is obvious, and the drainage is poor, can keep moisture for a long time after absorbing water, leads to that the bearing capacity is little, poor stability seriously influences the stability of road bed, leads to the road surface to produce above-mentioned a series of diseases and appear. The related design specifications also stipulate that the high liquid limit soil can not be directly used as roadbed filling without reasonable treatment; however, in parts of south China, high liquid limit soil is widely distributed, and in consideration of construction period and cost, the high liquid limit soil is inevitably used for roadbed paving. For a second-class highway, the roadbed generally comprises a roadbed (i.e. 95 areas) and embankments (i.e. 94 areas and 92 areas), wherein the 95 area refers to the compactness of the roadbed layer of 95%, the thickness of the 95 area of the roadbed is required to be 0-80 cm in the current construction specification, and the 95 area is positioned at the topmost layer of the roadbed, i.e. the compactness of the roadbed level between 0-80 cm below the top surface of the roadbed is 95%, and the roadbed (95 areas) directly bears the main load transmitted from the road surface, so that the roadbed is required to be uniform and compact and must achieve sufficient bearing strength and stability.

However, at present, in the existing high liquid limit clay composite roadbed structure, the drainage structure mainly depends on the drainage pipe, but the drainage pipe is difficult to quickly drain water in a multilayer area of the roadbed due to the limited diameter of the drainage pipe, so that the problems of pavement cracking, slurry bleeding and the like are easily caused. Therefore, it is necessary to invent a high liquid limit clay composite roadbed structure to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high liquid limit clay composite roadbed structure to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a compound roadbed structure of high liquid limit clay, includes ground, 92 districts, 94 districts, 95 districts and surface course from bottom to top lay in proper order and form the road bed in the top on ground, be provided with drainage structures between ground and the surface course, first, middle part and the lower half of drainage structures are located same level with 95 districts, 94 districts and 92 districts respectively, drainage structures's length direction is located the both sides of road bed respectively along the width direction of road bed and drainage structures's both ends, drainage structures includes hollow structure's flat tube, the inner chamber packing of flat tube has the rubble, the outside parcel of rubble has the cloth that permeates water.

Preferably, the drainage structures are provided in plurality, and the drainage structures are distributed at equal intervals along the length direction of the roadbed.

Preferably, the openings at the two ends of the flat tube are fixedly connected with end covers, and the lower end of the side surface of each end cover is provided with a plurality of drainage holes distributed in a rectangular array in a penetrating manner.

Preferably, the lower half parts of the two side surfaces of the flat tube are respectively provided with a first water permeable hole in a penetrating way, and the upper half parts of the two side surfaces of the flat tube are respectively provided with a second water permeable hole in a penetrating way.

Preferably, the first hole of permeating water and the second hole of permeating water all are provided with a plurality ofly, and are a plurality of the first hole of permeating water and the second hole of permeating water all are the rectangular array and distribute, the diameter variation of the first hole of permeating water and the second hole of permeating water.

The utility model has the technical effects and advantages that:

1. according to the utility model, the drainage structure is arranged between the ground and the 92 area and comprises the flat tube, the two side surfaces of the flat tube are respectively provided with the first water permeable hole and the second water permeable hole, the inner cavity of the flat tube is filled with the gravel, and the outer side wall of the gravel is coated with the water permeable cloth, so that the drainage structure can quickly drain the moisture in the 95 area, the 94 area and the 92 area, the strength of a roadbed is reduced due to the accumulation of the moisture, and meanwhile, the arrangement of the gravel can prevent the flat tube from being deformed due to the compression;

2. according to the utility model, the first water permeable hole is arranged on the upper half part of the flat tube, the second water permeable hole is arranged on the lower half part of the flat tube, and the inner diameters of the first water permeable hole and the second water permeable hole are different, so that different loosening degrees of the 95 zone, the 94 zone and the 92 zone can be adapted, and therefore, clay particles in the roadbed can be reduced from entering the inner cavity of the flat tube.

Drawings

Fig. 1 is a schematic cross-sectional view of the overall structure of the present invention.

FIG. 2 is a schematic side sectional view of the overall structure of the present invention.

Fig. 3 is a perspective view of the drainage structure of the present invention.

Fig. 4 is a schematic view of the interior of the flat tube structure of the present invention.

In the figure: 1. a ground surface; 2. region 92; 3. region 94; 4. region 95; 5. a pavement layer; 6. a drainage structure; 7. a flat tube; 8. breaking stone; 9. a water permeable cloth; 10. an end cap; 11. a drain hole; 12. a first water permeable hole; 13. and a second water permeable hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a high liquid limit clay composite roadbed structure as shown in figures 1-4, which comprises a ground 1, a 92 area 2, a 94 area 3, a 95 area 4 and a pavement layer 5, wherein the 92 area 2, the 94 area 3, the 95 area 4 and the pavement layer 5 are sequentially paved above the ground 1 from bottom to top to form a roadbed, a plurality of drainage structures 6 are arranged between the ground 1 and the pavement layer 5, the drainage structures 6 are distributed at equal intervals along the length direction of the roadbed, and the drainage structures 6 are mainly used for draining water seeped from the interior of the roadbed.

Specifically, the upper half, the middle part and the lower half of the drainage structure 6 are respectively located at the same level as the 95 th area 4, the 94 th area 3 and the 92 nd area 2, the length direction of the drainage structure 6 is along the width direction of the roadbed, and the two ends of the drainage structure 6 are respectively located at the two sides of the roadbed, so that the drainage structure 6 can directly discharge the moisture seeped out from the 92 nd area 2, the 94 th area 3 and the 95 th area 4 to the two sides of the roadbed.

Secondly, drainage structures 6 includes hollow structure's flat tube 7, the inner chamber of flat tube 7 is filled with rubble 8, rubble 8's setting is used for strengthening flat tube 7's intensity structure, take place deformation after avoiding flat tube 7 pressurized, rubble 8's outside parcel has water-permeable cloth 9, water-permeable cloth 9's setting can avoid the clearance between the inside granule of rubble 8 to be blockked up, the equal fixedly connected with end cover 10 of both ends opening part of flat tube 7, the side lower extreme of end cover 10 runs through and sets up a plurality of wash ports 11 that are the distribution of rectangular array, rubble 8 can be avoided dropping from flat tube 7's inner chamber in the setting of end cover 10, wash port 11's setting can be removed the moisture that piles up at flat tube 7 inner chamber.

Further, all run through in the both sides face lower half of flat pipe 7 and seted up hole one 12 of permeating water, the first half of flat pipe 7 both sides face has all run through and has seted up two 13 of permeating water hole, it all is provided with a plurality ofly to permeate water hole one 12 and two 13 of permeating water hole, a plurality of holes one 12 of permeating water and a plurality of two 13 of permeating water are the rectangular array and distribute, the diameter variation in size of hole one 12 of permeating water and two 13 of permeating water hole, it is mainly used for distinguishing 95 with the hole two 12 of permeating water hole, 94 distinguishes 3 and 92 the leading-in inner chamber of flat pipe 7 of 2 inside moisture, and because 95 distinguish 4, 94 distinguish 3 and 92 distinguish 2 inside compactedness difference, consequently its inside loose degree of granule is different, for this reason need set up the difference with the hole one 12 of permeating water and the hole two 13 internal diameters of permeating water hole.

The working principle of the utility model is as follows:

when the device is used, the water in the 95-region 4, the 94-region 3 and the 92-region 2 can gradually permeate into the inner cavity of the flat tube 7 through the water permeable holes I12 and the water permeable holes II 13, the water permeable cloth 9 is arranged to prevent gaps among particles in the gravel 8 from being blocked to influence the flow of the water in the inner cavity of the flat tube 7, and finally the water in the inner cavity of the flat tube 7 flows out of the roadbed through the water drainage holes 11.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a compound roadbed structure of high liquid limit clay, includes ground (1), 92 district (2), 94 district (3), 95 district (4) and pavement layer (5), its characterized in that: region 92 (2), 94 district (3), 95 district (4) and road surface layer (5) are laid in proper order from bottom to top and are formed the road bed in the top on ground (1), be provided with drainage structures (6) between ground (1) and road surface layer (5), the first half, middle part and the lower half of drainage structures (6) are located same level with 95 district (4), 94 district (3) and 92 district (2) respectively, the length direction of drainage structures (6) is located the both ends of road bed respectively along the width direction of road bed and drainage structures (6), drainage structures (6) are flat tube (7) including hollow structure, the inner chamber of flat tube (7) is filled with rubble (8), the outside parcel of rubble (8) has water cloth (9) of permeating.

2. The high liquid limit clay composite roadbed structure of claim 1, wherein: the drainage structures (6) are arranged in a plurality of numbers, and the drainage structures (6) are distributed at equal intervals along the length direction of the roadbed.

3. The high liquid limit clay composite roadbed structure of claim 2, wherein: the water draining device is characterized in that end covers (10) are fixedly connected to openings at two ends of the flat tube (7), and a plurality of water draining holes (11) distributed in a rectangular array are formed in the lower end of the side face of each end cover (10) in a penetrating mode.

4. The high liquid limit clay composite roadbed structure of claim 3, wherein: the water permeable pipe is characterized in that first water permeable holes (12) are formed in the lower half parts of the two side faces of the flat pipe (7) in a penetrating mode, and second water permeable holes (13) are formed in the upper half parts of the two side faces of the flat pipe (7) in a penetrating mode.

5. The high liquid limit clay composite roadbed structure of claim 4, wherein: the hole (12) of permeating water and the hole (13) of permeating water all are provided with a plurality ofly, and are a plurality of hole (12) of permeating water and a plurality of hole (13) of permeating water all are the rectangular array and distribute, the diameter variation in size of hole (12) of permeating water and hole (13) of permeating water.