CN103132416A - Method of bamboo wood handling mollisol filling highway subgrade - Google Patents
Method of bamboo wood handling mollisol filling highway subgrade Download PDFInfo
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- CN103132416A CN103132416A CN201110385017XA CN201110385017A CN103132416A CN 103132416 A CN103132416 A CN 103132416A CN 201110385017X A CN201110385017X A CN 201110385017XA CN 201110385017 A CN201110385017 A CN 201110385017A CN 103132416 A CN103132416 A CN 103132416A
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Abstract
The invention discloses a method of bamboo wood handling mollisol filling highway subgrade. The method includes the following steps: (1) handling a lower bearing layer; (2) conducting laying-off; (3) paving lime-soil layers; (4) paving a bamboo wood layer; and (5) conducting subgrade surface treatment. The bamboo wood layer which is paved in the step (4) comprises a plurality of steps. Each step comprises an upper layer and a lower layer. Each layer comprises horizontal bamboo tendons, lengthwise bamboo tendons, and a soft soil layer, wherein the horizontal bamboo tendons and the lengthwise bamboo tendons are staggered and overlaid, and the soft soil layer is paved on the bamboo tendons, and therefore a structure is formed by gratings which is formed by the bamboo tendons and clay together. Due to the fact that the method is used for handling the highway subgrade, the method not only can resolve the problem of stability of soft soil subgrade, at the same time, but also can enable nearby materials to be utilized in a reasonable mode, and therefore the purposes of regeneration and reuse, and environmental protection and economy are achieved.
Description
Technical field
The present invention relates to a kind of method that weak soil fills highway subgrade of processing, relate in particular to a kind of bamboo wood and process the method that weak soil fills highway subgrade.
Background technology
The soil stabilization technology just begins to use as far back as the B.C. mankind, and the roman once built Tiber's river levee with the reed soil mass consolidation; The ancient buildings such as the Great Wall, ancient Egypt's Assyria's ancient temple of China also all once adopted the plant twigs of the chaste tree etc. to reinforce, to improve resistance to overturning.Until adopted in addition straw to mix " house with tamped clay walls " house that earth is reached in China modern age, so, different engineering materials is used in conjunction with, to improve the resistance to overturning of structure, be the widely used technological means of the mankind since ancient times.
Reinforcement material is soil stabilization key problem in technology part, and bamboo wood has the advantage of self as reinforcement material: material is from heavy and light, and intensity is large, and is full of elasticity, safer, easily processing, and growth is fast, and is cheaper, belongs to regenerated resources.Nineteen fifty-three American scientist Mo Guli publishes " bamboo wood building materials " book, with the basic skills in diagram and bamboo wood building room, photo explanation Central America.The United Nations's social affairs in 1972 and Ministry of Economic Affaris have published " application on building materials of bamboo wood and reed ", have mentioned the bamboo wood soil mass consolidation and have used.China is product bamboo big country, and bamboo resource is very abundant, and its area and output all occupy first place in the world, and wherein yield of bamboo accounts for 90% of the world.All there is a large amount of bamboo resources the each province, southwest, Yunnan add the extensive utilization of bamboo reinforcement cob wall in new countryside construction; Panshihua University has built high 35m, and long 170m adds the bamboo reinforcement soil-slope, with add common geo-grid compare save cost after 30%, 8 year observation structure reliable and stable.To sum up, it is far better that the bamboo wood reinforcing technique is compared traditional its effect of geo-grid reinforcing technique.
Present bamboo wood reinforcing technique is mainly used in the construction such as body of wall, slope body, does not use in the consolidation process of highway subgrade.Fairly simple combination construction is adopted in the application of bamboo wood in body of wall, slope body, can not satisfy quality requirement in the highway subgrade construction.
Summary of the invention
Purpose of the present invention provides a kind of bamboo wood to process the method that weak soil fills highway subgrade with regard to being in order to address the above problem.
In order to achieve the above object, the present invention has adopted following technical scheme:
The present invention includes following steps:
(1) process sub-layer;
(2) setting-out;
(3) lay grey soil layer;
(4) lay the bamboo wood layer;
(5) process on the roadbed top layer.
Particularly, the concrete grammar of described step (1) is: remove organic impurities and the surface dust of sub-layer, the planeness of sub-layer is no more than ± 5cm; The basic unit's cleaning, the drying that keep sub-layer.
Described step (4) comprises the steps:
A, grey soil layer lay complete after, the stake of inserted to play circle bamboo bar bamboo, reach default anchorage depth in the soil body of roadbed both sides, the stake of circle bamboo bar bamboo is vertical with roadbed;
B, at the inboard colligation horizontal cross bar of circle bamboo bar bamboo stake, the lap length of described horizontal cross bar is not less than 1.5m, horizontal cross bar overlap joint number is no more than 50% of sum in same jointing;
C, lay horizontal bamboo reinforcement on grey soil layer surface; Laterally the blue or green surface layer of bamboo reinforcement is downward, horizontal bamboo reinforcement spacing 20-30cm, and laterally bamboo reinforcement is walked around horizontal cross bar and is fixed with the galvanized wire colligation;
D, lay vertical bamboo reinforcement, vertically the blue or green surface layer of bamboo reinforcement is downward, vertical bamboo reinforcement and laterally bamboo reinforcement is mutually vertical in horizontal plane, horizontal bamboo reinforcement and vertically bamboo reinforcement is staggered laminates, vertical bamboo reinforcement spacing 30-50cm, vertically bamboo reinforcement employing splicing processes connection;
E, horizontal bamboo reinforcement are with vertically the bamboo reinforcement staggered place is by wooden peg or bamboo nail and soil body grappling, and with the bamboo reinforcement anchored ends, middle ware is apart from 1-2m;
F, horizontal bamboo reinforcement with vertically filling weak soil on bamboo reinforcement, and roll compacting, forms a step interior lower floor;
G, lay dirt in lower floor, the horizontal bamboo reinforcement anti-package that lower floor is reserved is rolled on this layer soil body;
H, repeating step c-g, form the upper strata in a step, in this process, with the horizontal bamboo reinforcement of lower floor's reservation and the horizontal bamboo reinforcement overlap joint on upper strata, lap-joint is fixed with the galvanized wire colligation, lap length is not less than 1.5m, and laterally bamboo reinforcement overlap joint number is no more than 50% of sum in same jointing, completes the bottom step;
I, on the bottom step repeating step a-h, complete second step;
J, repeating step a-h are until complete last step;
K, in the end fill weak soil above the upper strata of a step.
The stake of described round bamboo bar bamboo, described horizontal cross bar, described horizontal bamboo reinforcement and the equal bamboo that adopts of described vertical bamboo reinforcement are the fresh cut mao bamboon of growth period more than 5 years.
The tensile strength parallel to the grain of described mao bamboon is not less than 150MPa, and the modulus of elasticity parellel to grain of described mao bamboon is 1.16-1.19GPa.
Described mao bamboon is the antiseptic mao bamboon of process waterproof insectproof.
The diameter of described round bamboo bar bamboo stake is more than 50mm.
The width of described horizontal cross bar is more than 50mm, and thickness is more than 5mm.
The width of described horizontal bamboo reinforcement and described vertical bamboo reinforcement is 50mm, and thickness is 5mm.
Beneficial effect of the present invention is:
Processing weak soil with the present invention fills highway subgrade and has following advantage:
1. bamboo wood is environment-friendly materials, regenerated resources, utilizes it reinforcing soft soil roadbed, belongs to recycling economy;
2. backfilled roadbed supported can rationally fetching earth nearby, still less use soil than generally putting the slope roadbed simultaneously, saved transport cost, and consequent expropriation of land, removal expense, thereby protected to a greater extent local natural environment and ecological environment;
3. the common structure that forms of bamboo wood (bamboo bar, bamboo chip, bamboo reinforcement) and weak soil, both can solve soft soil roadbed intensity, stable problem, can also fetch earth nearby simultaneously, fetches earth less as far as possible, reaches high efficiency, the low cost of construction, the purpose of environmental protection.
Description of drawings
Fig. 1 is one of structural representation of laying in the present invention bamboo wood layer process;
Fig. 2 be lay in the present invention bamboo wood layer process structural representation two;
Fig. 3 be lay in the present invention bamboo wood layer process structural representation three;
Fig. 4 be lay in the present invention bamboo wood layer process structural representation four;
Fig. 5 be lay in the present invention bamboo wood layer process structural representation five;
Fig. 6 be lay in the present invention bamboo wood layer process structural representation six;
Fig. 7 be lay in the present invention bamboo wood layer process structural representation seven;
Fig. 8 be lay in the present invention bamboo wood layer process structural representation eight;
Fig. 9 be lay in the present invention bamboo wood layer process structural representation nine;
Figure 10 be lay in the present invention bamboo wood layer process structural representation ten;
Figure 11 be lay in the present invention bamboo wood layer process structural representation 11;
Figure 12 be lay in the present invention bamboo wood layer process structural representation 12;
Figure 13 be lay in the present invention bamboo wood layer process structural representation 13;
Figure 14 be lay in the present invention bamboo wood layer process structural representation 14;
Figure 15 be lay in the present invention bamboo wood layer process structural representation 15;
Figure 16 be lay in the present invention bamboo wood layer process structural representation 16;
Figure 17 be lay in the present invention bamboo wood layer process structural representation 17;
Figure 18 be lay in the present invention bamboo wood layer process structural representation 18;
Figure 19 be lay in the present invention bamboo wood layer process structural representation 19;
Figure 20 be lay in the present invention bamboo wood layer process structural representation 20;
Figure 21 be lay in the present invention bamboo wood layer process structural representation 21;
Figure 22 be lay in the present invention bamboo wood layer process structural representation 22;
Figure 23 be lay in the present invention bamboo wood layer process structural representation 23;
Figure 24 be lay in the present invention bamboo wood layer process structural representation 24;
Figure 25 lays the main TV structure schematic diagram of the bamboo wood layer after completing in the present invention;
Figure 26 lays the plan structure schematic diagram of the bamboo wood layer after completing in the present invention.
In figure, 1-ash soil layer, the stake of 2-circle bamboo bar bamboo, the 3-horizontal cross bar, the horizontal bamboo reinforcement of 4-, the vertical bamboo reinforcement of 5-, the 6-wooden peg, the 7-weak soil, the horizontal bamboo reinforcement anti-package of 8-is wrapped up in bridging arrangement.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described in detail:
At first adopt the fresh cut mao bamboon of growth period more than 5 years, its tensile strength parallel to the grain is not less than 150MPa, and modulus of elasticity parellel to grain is 1.16-1.19GPa.Above-mentioned mao bamboon is processed into following bamboo wood after through the waterproof insectproof preservative treatment: the round bamboo bar bamboo stake of diameter more than 50mm, width more than 50mm, the horizontal cross bar of thickness more than 5mm, width is that 50mm, thickness are the horizontal bamboo reinforcement and vertical bamboo reinforcement of 5mm.
As Fig. 1-shown in Figure 24, then carry out the construction of following steps:
(1) process sub-layer: remove organic impurities and the surface dust of sub-layer, the planeness of sub-layer is no more than ± 5cm; The basic unit's cleaning, the drying that keep sub-layer;
(2) setting-out;
(3) lay grey soil layer 1;
(4) lay the bamboo wood layer;
(5) process on the roadbed top layer.
Described step (4) comprises the steps:
A, grey soil layer 1 lay complete after, inserted to play circle bamboo bar bamboo stake 2, reach default anchorage depth in the soil body of roadbed both sides, the stake 2 of circle bamboo bar bamboo is vertical with roadbed;
B, at the inboard colligation horizontal cross bar 3 of circle bamboo bar bamboo stake 2, the lap length of horizontal cross bar 3 is not less than 1.5m, the overlap joint number of horizontal cross bar 3 is no more than 50% of sum in same jointing;
C, lay horizontal bamboo reinforcement 4 on the surface of grey soil layer 1; Laterally the blue or green surface layer of bamboo reinforcement 4 is downward, horizontal bamboo reinforcement 4 spacing 20-30cm, and laterally bamboo reinforcement 4 is walked around horizontal cross bar 3 and is fixed with the galvanized wire colligation;
D, the vertical bamboo reinforcement 5 of laying, vertically the blue or green surface layer of bamboo reinforcement 5 is downward, and vertical bamboo reinforcement 5 is mutual vertical in horizontal plane with horizontal bamboo reinforcement 4, and horizontal bamboo reinforcement 4 and vertical bamboo reinforcement 5 interlock and laminate, vertical bamboo reinforcement 5 spacing 30-50cm, vertical bamboo reinforcement 5 adopts the splicing processes connection;
E, horizontal bamboo reinforcement 4 are with vertically bamboo reinforcement 5 staggered places are by wooden peg 6 (or bamboo nail) and soil body grappling, and with the bamboo reinforcement anchored ends, middle ware is apart from 1-2m;
F, horizontal bamboo reinforcement 4 with vertically filling weak soil 7 on bamboo reinforcement 5, and roll compacting, forms a step interior lower floor;
G, lay dirt in lower floor, horizontal bamboo reinforcement 4 anti-packages that lower floor is reserved are rolled on this layer soil body;
H, repeating step c-g, form the upper strata in a step, in this process, with the horizontal bamboo reinforcement 4 of lower floor's reservation and horizontal bamboo reinforcement 4 overlap joints on upper strata, form horizontal bamboo reinforcement anti-package and wrap up in bridging arrangement 8, lap-joint is fixed with the galvanized wire colligation, and lap length is not less than 1.5m, laterally bamboo reinforcement 4 overlap joint numbers are no more than 50% of sum in same jointing, complete the bottom step;
I, on the bottom step repeating step a-h, complete second step;
J, repeating step a-h are until complete last step;
K, in the end fill weak soil above the upper strata of a step.
After complete, form the bamboo wood layer that a plurality of steps form, as Figure 25 and shown in Figure 26, after processing through road bed, whole subgrade construction is complete, and whole roadbed has the advantages that Stability Analysis of Structures is reliable, anti-pressure ability is strong, and the convenience, with low cost of drawing materials.
Claims (9)
1. a bamboo wood is processed the method that weak soil fills highway subgrade, it is characterized in that: comprise the steps:
(1) process sub-layer;
(2) setting-out;
(3) lay grey soil layer;
(4) lay the bamboo wood layer;
(5) process on the roadbed top layer.
2. bamboo wood according to claim 1 is processed the method that weak soil fills highway subgrade, and it is characterized in that: the concrete grammar of described step (1) is: remove organic impurities and the surface dust of sub-layer, the planeness of sub-layer is no more than ± 5cm; The basic unit's cleaning, the drying that keep sub-layer.
3. bamboo wood according to claim 1 is processed the method that weak soil fills highway subgrade, and it is characterized in that: described step (4) comprises the steps:
A, grey soil layer lay complete after, the stake of inserted to play circle bamboo bar bamboo, reach default anchorage depth in the soil body of roadbed both sides, the stake of circle bamboo bar bamboo is vertical with roadbed;
B, at the inboard colligation horizontal cross bar of circle bamboo bar bamboo stake, the lap length of described horizontal cross bar is not less than 1.5m, horizontal cross bar overlap joint number is no more than 50% of sum in same jointing;
C, lay horizontal bamboo reinforcement on grey soil layer surface; Laterally the blue or green surface layer of bamboo reinforcement is downward, horizontal bamboo reinforcement spacing 20-30cm, and laterally bamboo reinforcement is walked around horizontal cross bar and is fixed with the galvanized wire colligation;
D, lay vertical bamboo reinforcement, vertically the blue or green surface layer of bamboo reinforcement is downward, vertical bamboo reinforcement and laterally bamboo reinforcement is mutually vertical in horizontal plane, horizontal bamboo reinforcement and vertically bamboo reinforcement is staggered laminates, vertical bamboo reinforcement spacing 30-50cm, vertically bamboo reinforcement employing splicing processes connection;
E, horizontal bamboo reinforcement are with vertically the bamboo reinforcement staggered place is by wooden peg or bamboo nail and soil body grappling, and with the bamboo reinforcement anchored ends, middle ware is apart from 1-2m;
F, horizontal bamboo reinforcement with vertically filling weak soil on bamboo reinforcement, and roll compacting, forms a step interior lower floor;
G, lay dirt in lower floor, the horizontal bamboo reinforcement anti-package that lower floor is reserved is rolled on this layer soil body;
H, repeating step c-g, form the upper strata in a step, in this process, with the horizontal bamboo reinforcement of lower floor's reservation and the horizontal bamboo reinforcement overlap joint on upper strata, lap-joint is fixed with the galvanized wire colligation, lap length is not less than 1.5m, and laterally bamboo reinforcement overlap joint number is no more than 50% of sum in same jointing, completes the bottom step;
I, on the bottom step repeating step a-h, complete second step;
J, repeating step a-h are until complete last step;
K, in the end fill weak soil above the upper strata of a step.
4. use bamboo wood according to claim 3 is processed the method that weak soil fills highway subgrade, and it is characterized in that: the stake of described round bamboo bar bamboo, described horizontal cross bar, described horizontal bamboo reinforcement and the equal bamboo that adopts of described vertical bamboo reinforcement are the fresh cut mao bamboon of growth period more than 5 years.
5. bamboo wood according to claim 4 is processed the method that weak soil fills highway subgrade, and it is characterized in that: the tensile strength parallel to the grain of described mao bamboon is not less than 150MPa, and the modulus of elasticity parellel to grain of described mao bamboon is 1.16-1.19GPa.
6. according to claim 4 or 5 described bamboo woods are processed the method that weak soil fills highway subgrade, it is characterized in that: described mao bamboon is the antiseptic mao bamboon of process waterproof insectproof.
7. according to claim 3 or 4 described bamboo woods are processed the method that weak soil fills highway subgrade, and it is characterized in that: the diameter of described round bamboo bar bamboo stake is more than 50mm.
8. according to claim 3 or 4 described bamboo woods are processed the method that weak soil fills highway subgrade, and it is characterized in that: the width of described horizontal cross bar is more than 50mm, and thickness is more than 5mm.
9. according to claim 3 or 4 described bamboo woods are processed the method that weak soil fills highway subgrade, and it is characterized in that: the width of described horizontal bamboo reinforcement and described vertical bamboo reinforcement is 50mm, and thickness is 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110385017XA CN103132416A (en) | 2011-11-28 | 2011-11-28 | Method of bamboo wood handling mollisol filling highway subgrade |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110385017XA CN103132416A (en) | 2011-11-28 | 2011-11-28 | Method of bamboo wood handling mollisol filling highway subgrade |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103614955A (en) * | 2013-11-25 | 2014-03-05 | 中国电力工程顾问集团西南电力设计院 | Treatment method for soft soil foundation construction road |
| CN104715108A (en) * | 2015-02-28 | 2015-06-17 | 天津市市政工程研究院 | Method for determining optimal scheme of processing soft soil roadbed through lime |
| CN106638199A (en) * | 2016-12-30 | 2017-05-10 | 青岛旭域土工材料股份有限公司 | Geogrid coated type road rapid construction method and application |
| CN110284386A (en) * | 2019-06-28 | 2019-09-27 | 中国二十冶集团有限公司 | Improve the method for the soft soil roadbed intensity of peat soil |
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| RU2186897C2 (en) * | 2000-08-28 | 2002-08-10 | Оленев Евгений Александрович | Road paving method |
| CN101666083A (en) * | 2009-08-13 | 2010-03-10 | 林佳栋 | Soft soil foundation treatment reinforcement method and device thereof |
| CN101962929A (en) * | 2010-11-05 | 2011-02-02 | 华中科技大学 | Novel method for processing soft soil subgrade by pile-supporting reinforcing technology |
| CN102021871A (en) * | 2009-09-15 | 2011-04-20 | 中国石油化工集团公司 | Foundation treatment method for temporary construction subgrade on dredge fill soft foundation site |
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2011
- 2011-11-28 CN CN201110385017XA patent/CN103132416A/en active Pending
Patent Citations (4)
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| RU2186897C2 (en) * | 2000-08-28 | 2002-08-10 | Оленев Евгений Александрович | Road paving method |
| CN101666083A (en) * | 2009-08-13 | 2010-03-10 | 林佳栋 | Soft soil foundation treatment reinforcement method and device thereof |
| CN102021871A (en) * | 2009-09-15 | 2011-04-20 | 中国石油化工集团公司 | Foundation treatment method for temporary construction subgrade on dredge fill soft foundation site |
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Non-Patent Citations (1)
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103614955A (en) * | 2013-11-25 | 2014-03-05 | 中国电力工程顾问集团西南电力设计院 | Treatment method for soft soil foundation construction road |
| CN103614955B (en) * | 2013-11-25 | 2016-03-16 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of processing method of soft soil foundation construction road |
| CN104715108A (en) * | 2015-02-28 | 2015-06-17 | 天津市市政工程研究院 | Method for determining optimal scheme of processing soft soil roadbed through lime |
| CN104715108B (en) * | 2015-02-28 | 2018-01-09 | 天津市市政工程研究院 | The determination method of the soft soil roadbed preferred plan of lime treatment |
| CN106638199A (en) * | 2016-12-30 | 2017-05-10 | 青岛旭域土工材料股份有限公司 | Geogrid coated type road rapid construction method and application |
| CN110284386A (en) * | 2019-06-28 | 2019-09-27 | 中国二十冶集团有限公司 | Improve the method for the soft soil roadbed intensity of peat soil |
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Application publication date: 20130605 |