CN203546550U - Novel geotechnical felt and road section using same - Google Patents
Novel geotechnical felt and road section using same Download PDFInfo
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- CN203546550U CN203546550U CN201320598666.2U CN201320598666U CN203546550U CN 203546550 U CN203546550 U CN 203546550U CN 201320598666 U CN201320598666 U CN 201320598666U CN 203546550 U CN203546550 U CN 203546550U
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Abstract
The utility model relates to a novel geotechnical felt and a road section using the same. The novel soil geotechnical felt comprises geotechnical cloth (a) and a geogrid (b), wherein the geogrid (b) is sewn on one or more surfaces of the upper surface and the lower surface of the geotechnical cloth (a); the thickness of the geotechnical cloth (a) is 1-50 mm, the mass area ratio of the geotechnical cloth (a) is 100-1,000 g/sq.m., and the thickness of the geogrid (b) is 0.1-30 mm. According to the novel geotechnical felt and the road section, the novel geotechnical felt has good tensile strength and non-deformability, can greatly improve the soil bearing force and stability, prevents the loss of base soil, and effectively prevents and treats rising soil; moreover, in the presence of the geogrid, the geotechnical felt is unlikely to slip and break during the using process, and is wide in application range and good in durability.
Description
Technical field
The section that the utility model relates to a kind of novel geotechnological felt and uses this geotechnique's felt.
Background technology
Rise soil is that bedding soil is subject to soaking of the surface water or underground water mud softening or that form after liquefaction under vibrations, a kind of subgrade defect phenomenon that the space of filler gushes out to surface above railway roadbed under vehicle dynamic loading, its harmfulness shows particularly evidently in snipe.Because the space of railway roadbed is filled and stopped up by mud, when fine day is dry or during mercury dropped, the mudstone mixture that mud and rock ballast mix is caused plate knot of ballast bed by cementing with freezing together, and its elasticity is significantly reduced, and produce serious circuit sky and hang.Under the impact of train, roadbed occurs or distortion, and circuit physical dimension changes, thereby seriously jeopardizes traffic safety.
In recent years, after global warming and road surface black, Upper Limit of Permafrost is degenerated obviously, causes the subgrade defects such as settlement of subgrade and longitudinal crack.In Frozen Ground Area, construct a railway or highway, due to the variation of temperature, load etc., cause roadbed to occur that the phenomenons such as frost boiling, thaw collapse, cracking even misplace happen occasionally.
At present, cushion is the one frost boiling Disease Treatment method generally adopting, but the method easy freeze injury in winter, the phase of melting in spring easily rises soil, and requires closed-loop during construction, and interference on the road is large; Bedding drainage is also the method for commonly using, but the construction of this method is all larger with basal plane compacting difficulty, and driving is had to certain interference, and generally in draining, also can drain mud, cause the loss of substrate soil, thereby aggravation roadbed sink; Grouting easily causes roadbed arch in work progress, affected by the factors such as soil nature, grouting pressure and Guan Xing, theoretical relative complex; Lay sand cushion, cost is higher, and the cycle is longer, requires closed-loop, impact driving; And adding horizontal french drain, cost is higher, larger on driving impact, and it is not remarkable to produce effects.Further, use polymeric material as the method for neoprene, complicated construction technique, progress is slow, and cost is higher.All there is obvious limitation in these materials and methods above, especially to diseases such as the frost boiling causing in the multigelation circulation of frozen ground regions, thaw collapses, can not play good prevention effect.
Comparatively speaking, set up insulating as wider in the method applicable surface of polystyrol plastic foam plate and polyurethane sheet, be specially adapted to frozen ground regions.But this method can not change the trend of turnover ever-frozen ground thermal balance, belongs to the method for passive protection frozen soil foundation, but also likely causes Upper Limit of Permafrost to occur lifting, thereby there is subgrade defect.
In the method for laying geotextiles between bottom layer of subgrade and top layer, in some engineerings, also obtained application, sometimes even use together with drainage, but due to geotextiles insufficient strength, under the effect of long duration load, easily produce slippage and breakage, application life is shorter, Renewal process is comparatively loaded down with trivial details, is therefore difficult to obtain large-scale promotion.
Utility model content
The purpose of this utility model is the section that a kind of novel geotechnological felt is provided and uses this geotechnique's felt, having solved the soil under bedding easily rises soil, and the geotextiles insufficient strength of laying between existing bottom layer of subgrade and top layer, under the effect of long duration load, easily produce slippage and breakage, application life is shorter, the problem that Renewal process is comparatively loaded down with trivial details.
For addressing the above problem, technical solution adopted in the utility model is:
A kind of novel geotechnological felt, comprises geotextiles and geo-grid, and described geo-grid is by making one or more surfaces in described geotextiles upper surface and soffit, and the thickness of described geotextiles is 1～50mm, and mass area ratio is 100～1000g/m
2, the thickness of described geo-grid is 0.1～30mm.
Further technical scheme is, described geotextiles is for spinning geotextiles or non-woven geotextile, and described geo-grid is one or more the compound formations in Plastics Geogrids, steel plastic geogrid, earth grille, basalt fibre geo-grid and glass polyester geo-grid.
A kind of Ballast track section, comprise successively from top to bottom bottom layer of subgrade, geotechnological felt, surface layer of subgrade bed and railway ballast, described geotechnological felt comprises geotextiles and geo-grid, described geo-grid is by making one or more surfaces in described geotextiles upper surface and soffit, the thickness of described geotextiles is 1～50mm, and mass area ratio is 100～1000g/m
2, the thickness of described geo-grid is 0.1～30mm.
A kind of non-fragment orbit section, comprise successively from top to bottom bottom layer of subgrade, geotechnological felt, surface layer of subgrade bed and track plates, described geotechnological felt comprises geotextiles and geo-grid, described geo-grid is by making at described geotextiles upper surface, the thickness of described geotextiles is 1～50mm, and mass area ratio is 100～1000g/m
2, the thickness of described geo-grid is 0.1～30mm.
The beneficial effect that adopts technique scheme to produce is:
The utlity model has good tensile strength and non-deformability, can greatly improve soil bearing capacity and stability, prevent the loss of substrate soil property, effectively control is risen soil, and due to the existence of geo-grid, geotechnique's felt is in use difficult for producing the phenomenons such as slippage, breakage, and widely applicable, durability is good.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of a kind of novel geotechnological felt of the utility model.
Fig. 2 is the structural representation of a kind of novel geotechnological another embodiment of felt of the utility model.
Fig. 3 is the section structural representation that uses a kind of novel geotechnological felt of the utility model.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
According to a kind of novel geotechnological felt of the utility model embodiment: a kind of novel geotechnological felt, comprise geotextiles a and geo-grid b, described geo-grid b is by making one or more surfaces in described geotextiles a upper surface and soffit, the thickness of described geotextiles a is 1～50mm, and mass area ratio is 100～1000g/m
2, the thickness of described geo-grid b is 0.1～30mm.
Wherein Figure 1 shows that described geo-grid b is by making at described geotextiles a upper surface; Figure 2 shows that described geo-grid b is by making one or more surfaces in described geotextiles a upper surface and soffit.
According to a kind of novel geotechnological felt of the utility model preferred embodiment, described geotextiles a is for spinning geotextiles or non-woven geotextile, and described geo-grid b is one or more the compound formations in Plastics Geogrids, steel plastic geogrid, earth grille, basalt fibre geo-grid and glass polyester geo-grid.
Fig. 3 shows an embodiment in a kind of Ballast track of the utility model section: a kind of Ballast track section, comprise successively from top to bottom bottom layer of subgrade 4, geotechnological felt 3, surface layer of subgrade bed 2 and railway ballast 1, described geotechnological felt 3 comprises geotextiles a and geo-grid b, as shown in Figure 2, described geo-grid b is by making one or more surfaces in described geotextiles a upper surface and soffit, the thickness of described geotextiles a is 1～50mm, and mass area ratio is 100～1000g/m
2, the thickness of described geo-grid b is 0.1～30mm.
Fig. 3 also shows an embodiment in a kind of Ballast track of the utility model section: comprise successively from top to bottom bottom layer of subgrade 4, geotechnological felt 3, surface layer of subgrade bed 2 and track plates 1, as shown in Figure 1, described geotechnological felt 3 comprises geotextiles a and geo-grid b, described geo-grid b is by making at described geotextiles a upper surface, the thickness of described geotextiles a is 1～50mm, and mass area ratio is 100～1000g/m
2, the thickness of described geo-grid b is 0.1～30mm.
Although the utility model is described with reference to multiple explanatory embodiment of the present utility model here, but, should be appreciated that, those skilled in the art can design a lot of other modification and embodiments, and these are revised and within embodiment will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to the building block of subject combination layout and/or layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes will be also obvious.
Claims (3)
1. a novel geotechnological felt, it is characterized in that: comprise geotextiles (a) and geo-grid (b), described geo-grid (b) is by making one or more surfaces in described geotextiles (a) upper surface and soffit, the thickness of described geotextiles (a) is 1～50mm, and mass area ratio is 100～1000g/m
2, the thickness of described geo-grid (b) is 0.1～30mm.
2. a Ballast track section, it is characterized in that: comprise successively from top to bottom bottom layer of subgrade (4), geotechnological felt (3), surface layer of subgrade bed (2) and railway ballast (1), described geotechnological felt (3) comprises geotextiles (a) and geo-grid (b), described geo-grid (b) is by making one or more surfaces in described geotextiles (a) upper surface and soffit, the thickness of described geotextiles (a) is 1～50mm, and mass area ratio is 100～1000g/m
2, the thickness of described geo-grid (b) is 0.1～30mm.
3. a non-fragment orbit section, it is characterized in that: comprise successively from top to bottom bottom layer of subgrade (4), geotechnological felt (3), surface layer of subgrade bed (2) and track plates (1), described geotechnological felt (3) comprises geotextiles (a) and geo-grid (b), described geo-grid (b) is by making at described geotextiles (a) upper surface, the thickness of described geotextiles (a) is 1～50mm, and mass area ratio is 100～1000g/m
2, the thickness of described geo-grid (b) is 0.1～30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320598666.2U CN203546550U (en) | 2013-09-27 | 2013-09-27 | Novel geotechnical felt and road section using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320598666.2U CN203546550U (en) | 2013-09-27 | 2013-09-27 | Novel geotechnical felt and road section using same |
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| Publication Number | Publication Date |
|---|---|
| CN203546550U true CN203546550U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320598666.2U Expired - Lifetime CN203546550U (en) | 2013-09-27 | 2013-09-27 | Novel geotechnical felt and road section using same |
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| CN (1) | CN203546550U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111560799A (en) * | 2019-11-18 | 2020-08-21 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Roadbed heat insulation structure in frozen soil area, construction method and application |
| CN112523008A (en) * | 2020-11-26 | 2021-03-19 | 广西柳州钢铁集团有限公司 | Slurry-water isolation stone ballast track bed and construction method thereof |
-
2013
- 2013-09-27 CN CN201320598666.2U patent/CN203546550U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111560799A (en) * | 2019-11-18 | 2020-08-21 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Roadbed heat insulation structure in frozen soil area, construction method and application |
| CN112523008A (en) * | 2020-11-26 | 2021-03-19 | 广西柳州钢铁集团有限公司 | Slurry-water isolation stone ballast track bed and construction method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |