CN106012731A - Staged implementation method for bituminous pavement - Google Patents
Staged implementation method for bituminous pavement Download PDFInfo
- Publication number
- CN106012731A CN106012731A CN201610373917.5A CN201610373917A CN106012731A CN 106012731 A CN106012731 A CN 106012731A CN 201610373917 A CN201610373917 A CN 201610373917A CN 106012731 A CN106012731 A CN 106012731A
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- CN
- China
- Prior art keywords
- roadbed
- pavement structure
- layer
- sandy soil
- geotextiles
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/35—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them
Abstract
The invention discloses a staged implementation method for a bituminous pavement and used in the technical field of urban road roadbeds and pavements. The staged implementation method comprises the following steps that miscellaneous fill of a road is cleared away, and a cleared surface is rolled; a design roadbed is backfilled with roadbed materials to the top of the design roadbed; and a transitional pavement structure is implemented at the top of the roadbed and serves as a temporary pavement in the sedimentation transitional period, and then a perpetual pavement structure is paved after sedimentation is stable. The staged implementation method complies with a sedimentation rule of soft foundations, only local processing is conducted on the soft foundations, staged implementation is conducted on the pavement structure, and in the time period when large sedimentation occurs, the transitional pavement structure which has harmony with a transitional roadbed is adopted; and the perpetual pavement structure is paved on the transitional pavement structure after sedimentation is stable. In this way, coordinated interaction of the roadbed and the pavement structure is ensured. In the whole process, only a bituminous layer of a leveling layer part is added, so that substantial increasing of manufacturing cost is not caused, and the ideas of environment protection and saving are embodied.
Description
Technical field
The present invention is used for urban roadbed pavement technique field, a kind of method particularly relating to bituminous paving time phasing.
Background technology
Roadbed and road surface, be independent individuality, interact again, and Subgrade on Pavement impact is bearing capacity and settlement after construction, and road surface is the interception for water to the impact of roadbed, and the two together form road and plays the basis of self function.Bituminous paving is the main pavement structure form of urban road, generally, the permanent disposal all put things right once and for all due to roadbed, its bearing capacity is made to reach highway loading requirement, settlement after construction is effectively controlled, ensure that the use function of urban road, therefore, current Urban Road Asphalt Pavement structure substantially uses the method once implemented.The most either roadbed or road surface, acceptance index requires that it must carry out appropriate process when being completed, thus also requires that from checking and accepting and disposably implemented.
Some Special Roadbeds are difficult to disposably and permanently property and process, such as: thickness (several meter even more than ten rice) miscellaneous fill is distributed in the range of roadbed, is just difficult to its appropriate disposal.Miscellaneous fill is a kind of special soils, complicated component, its composition includes common sand, residual soil, building waste (concrete block, fragment of brick, cinder etc.), house refuse (cloth, skin material, bottle, plastics etc.), Organic substance etc., soil property is loose and the most uneven, under highway loading effect, even if the soil property under banketing is fine, bearing capacity is enough, still can produce bigger settlement after construction and differential settlement, generally should not be as subgrade soils.If processing in the usual way, then need to carry out changing to fill out or basement process.For deep miscellaneous fill, especially to the deep miscellaneous fill in the middle of city, all change the cost filled out the highest, it is also possible to cause destruction or the unstability of surrounding building, may not implement；And if take composite foundation or discharging consolidation mode to process, for the miscellaneous fill of complicated component be also difficult to carry out composite foundation cannot pile, discharging consolidation then cannot set up drainage channel smoothly.Therefore, duration, cost, environmental protection, technology etc., everyway limits the realization that deep miscellaneous fill disposably and permanently processes.
In the case, disposable pavement structure of implementing also faces problems: excessive sedimentation may result in pavement deflection, road hydrops etc.；Differential settlement more will make road surface subside, rupture.Therefore, thinking of breaking the normal procedure and the restriction of existing specification, it is necessary for taking technological means the most flexibly and effectively.
Summary of the invention
For solving the problems referred to above, the present invention provides a kind of method of bituminous paving time phasing, its reinforcement pavement structure, can ensure that again the stability after reinforcement (settling basicly stable), save duration and cost on the whole, and decrease remaining native process, embody the theory of environmental protection.
The technical solution adopted for the present invention to solve the technical problems is: a kind of method of bituminous paving time phasing, comprises the following steps:
S10. remove the miscellaneous fill of road, the surface after removing is rolled；
The most backfilled roadbed supported material is to design roadbed top；
S30. transitional pavement structure is implemented at roadbed top, and crossing property pavement structure as temporary pavement, after settlement stability, overlays Permanence Pavement structure in the sedimentation transition period on crossing property pavement structure again.
It is further used as the improvement of technical solution of the present invention, including step S11.
Roll geotextiles of rear making.
It is further used as the improvement of technical solution of the present invention, in step S20, at roadbed material of an above back-filling in layers of geotextiles and is compacted successively；Laying secondary geotextiles at a roadbed material top of backfill, secondary geotextiles upper berth secondary roadbed material is to design roadbed top.
It is further used as the improvement of technical solution of the present invention, the most alternately backfills sandy soil layer, aggregate chips layer formation sandy soil aggregate chips layer during a roadbed material backfill, then backfill aggregate chips layer at sandy soil aggregate chips layer top.
Being further used as the improvement of technical solution of the present invention, at secondary geotextiles upper berth sandy soil and be compacted during the backfill of secondary roadbed material, secondary geotextiles is from roadbed two on the side to sandy soil bound edge, and then making residue sandy soil is to design roadbed top.
It is further used as the improvement of technical solution of the present invention, in step S10, miscellaneous fill removes the degree of depth is 2m, step S20 alternately backfills during roadbed material backfill 30cm sandy soil layer, the sandy soil aggregate chips layer of 10cm aggregate chips layer formation 1.5m successively, sandy soil aggregate chips layer top is by the aggregate chips layer of the thickness backfill 50cm of every layer of 10cm, being compacted at secondary geotextiles upper berth 50cm sandy soil a point two-layer during backfill of secondary roadbed material, secondary geotextiles is to the 50cm a length of 1m of sandy soil bound edge.
The urban road sedimentation transition period being further used as the improvement of technical solution of the present invention, secondary distributor road and ratings above is 2 years, and the urban road sedimentation transition period of not enough secondary distributor road grade is 1 year.
Being further used as the improvement of technical solution of the present invention, transitional pavement structure includes cutting optimal and middle surface layer, and Permanence Pavement structure includes leveling layer and upper layer.
Being further used as the improvement of technical solution of the present invention, in step S30 after settlement stability, before overlaying Permanence Pavement structure on crossing property pavement structure again, the surface to transitional pavement structure carries out purified treatment.
Beneficial effects of the present invention: the present invention is by with upper type, comply with the settlement law of soft foundation, soft foundation is only carried out Local treatment, road pavement structure time phasing, within the time period that there will be bigger sedimentation, employing and " transitional " roadbed have the transitional pavement structure of harmony；After settlement stability, cambic pavement structure overlays permanent pavement structure again.Thus, it is ensured that the coordination linkage of roadbed and pavement structure, whole process only increases the part bitumen layer of leveling layer, do not causes being substantially improved of cost, embody the theory of environmental protection, saving.
Accompanying drawing explanation
The invention will be further described below in conjunction with the accompanying drawings:
Fig. 1 is subgrade treatment structure schematic diagram of the present invention；
Fig. 2 is the present invention crossing property pavement structure and Permanence Pavement structural relation figure.
Detailed description of the invention
With reference to Fig. 1, Fig. 2, that show the concrete structure of the preferred embodiments of the invention.Will be detailed below the construction features of each element of the present invention, and if when being described direction (upper and lower, left and right, before and after), be with the structure shown in Fig. 1 for reference to describing, but the actually used direction of the present invention be not limited thereto.
A kind of method that the invention provides bituminous paving time phasing, comprises the following steps:
S10. remove the miscellaneous fill in road 2.0m depth bounds, the surface after removing is rolled；
S11. rolling geotextiles 1 of rear making, the effect of a geotextiles 1 is diffusion-induced stress, compatible deformation, the differential settlement of suppression lower floor miscellaneous fill, and is to a certain degree reducing settlement after construction；
S20. at roadbed material of a geotextiles more than 1 back-filling in layers and it is compacted successively, 30cm sandy soil layer 2 is alternately backfilled successively during roadbed material backfill, 10cm aggregate chips layer 3 forms the sandy soil aggregate chips layer 4 of 1.5m, sandy soil aggregate chips layer 4 top is by the aggregate chips layer 5 of the thickness backfill 50cm of every layer of 10cm, secondary geotextiles 6 is laid at a roadbed material top of backfill, secondary geotextiles 6 upper berth secondary roadbed material is to design roadbed top, it is compacted at secondary geotextiles 6 upper berth 50cm sandy soil 7 a point two-layer during backfill of secondary roadbed material, secondary geotextiles 6 from roadbed two on the side to sandy soil bound edge, secondary geotextiles 6 is to the 50cm a length of 1m of sandy soil bound edge, then making residue sandy soil 8 is to design roadbed top；
S30. transitional pavement structure 9 is implemented at roadbed top, transitional pavement structure 9 includes cutting optimal and middle surface layer, crossing property pavement structure 9 is settling the transition period as temporary pavement, after settlement stability, the surface of transitional pavement structure 9 is carried out purified treatment, overlaying Permanence Pavement structure 10 on crossing property pavement structure 9 again, Permanence Pavement structure 10 includes leveling layer and upper layer, lays according to actual measurement vertical, horizontal settling height after the transition period.When the settling height recorded is less than the maximum compacted depth of upper layer, leveling layer can use and upper layer same material, simultaneously making；When the settling height recorded is more than the maximum compacted depth of upper layer, leveling layer should be independently arranged.Wherein, the urban road sedimentation transition period of secondary distributor road and ratings above is 2 years, and the urban road sedimentation transition period of not enough secondary distributor road grade is 1 year.
The technical program is beneficial in that, respect objective condition, from the thinking to block up, to transform simply, the thinking be adjusted to combining the two ways of dredging and plugging, letting nature take its course: the defect that deep miscellaneous fill soft foundation settlement after construction is bigger than normal is considered " process " the most simply, but change from the offensive to the defensive, take the strategy dredged, change by suitable roadbed material part and fill out, time phasing pavement structure again, first implementation section pavement structure, within certain transition period, it is allowed to it is along with subgrade settlement (including differential settlement)；After transition period, wait to settle basicly stable, then implement remaining pavement structure.Thus, reinforcement pavement structure, can ensure that again the stability after reinforcement (settling basicly stable), save duration and cost on the whole, and decrease the process of remaining soil, embody the theory of environmental protection.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement on the premise of spirit of the present invention, and modification or the replacement of these equivalents are all contained in the application claim limited range.
Claims (9)
1. the method for a bituminous paving time phasing, it is characterised in that comprise the following steps:
S10. remove the miscellaneous fill of road, the surface after removing is rolled；
The most backfilled roadbed supported material is to design roadbed top；
S30. transitional pavement structure is implemented at roadbed top, and crossing property pavement structure as temporary pavement, after settlement stability, overlays Permanence Pavement structure in the sedimentation transition period on crossing property pavement structure again.
The method of bituminous paving time phasing the most according to claim 1, it is characterised in that: include that step S11. rolls geotextiles of rear making.
The method of bituminous paving time phasing the most according to claim 2, it is characterised in that: in step S20, at roadbed material of an above back-filling in layers of geotextiles and it is compacted successively；Laying secondary geotextiles at a roadbed material top of backfill, secondary geotextiles upper berth secondary roadbed material is to design roadbed top.
The method of bituminous paving time phasing the most according to claim 3, it is characterised in that: the most alternately backfill sandy soil layer during a roadbed material backfill, aggregate chips layer forms sandy soil aggregate chips layer, then backfills aggregate chips layer at sandy soil aggregate chips layer top.
The method of bituminous paving time phasing the most according to claim 4, it is characterized in that: at secondary geotextiles upper berth sandy soil and be compacted during the backfill of secondary roadbed material, secondary geotextiles is from roadbed two on the side to sandy soil bound edge, and then making residue sandy soil is to design roadbed top.
The method of bituminous paving time phasing the most according to claim 5, it is characterized in that: in step S10, miscellaneous fill removes the degree of depth is 2m, step S20 alternately backfills during roadbed material backfill 30cm sandy soil layer, the sandy soil aggregate chips layer of 10cm aggregate chips layer formation 1.5m successively, sandy soil aggregate chips layer top is by the aggregate chips layer of the thickness backfill 50cm of every layer of 10cm, being compacted at secondary geotextiles upper berth 50cm sandy soil a point two-layer during backfill of secondary roadbed material, secondary geotextiles is to the 50cm a length of 1m of sandy soil bound edge.
The method of bituminous paving time phasing the most according to claim 1, it is characterised in that: the urban road sedimentation transition period of secondary distributor road and ratings above is 2 years, and the urban road sedimentation transition period of not enough secondary distributor road grade is 1 year.
The method of bituminous paving time phasing the most according to claim 1, it is characterised in that: transitional pavement structure includes cutting optimal and middle surface layer, and Permanence Pavement structure includes leveling layer and upper layer.
The method of bituminous paving time phasing the most according to claim 1, it is characterised in that: in step S30 after settlement stability, before overlaying Permanence Pavement structure on crossing property pavement structure again, the surface to transitional pavement structure carries out purified treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610373917.5A CN106012731A (en) | 2016-05-30 | 2016-05-30 | Staged implementation method for bituminous pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610373917.5A CN106012731A (en) | 2016-05-30 | 2016-05-30 | Staged implementation method for bituminous pavement |
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| CN106012731A true CN106012731A (en) | 2016-10-12 |
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| CN201610373917.5A Pending CN106012731A (en) | 2016-05-30 | 2016-05-30 | Staged implementation method for bituminous pavement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114908630A (en) * | 2022-05-13 | 2022-08-16 | 山东电力工程咨询院有限公司 | Factory road structure and secondary permanent-temporary combined layered construction method |
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| CN103806432A (en) * | 2014-01-25 | 2014-05-21 | 西安科技大学 | Method for treating foundations in slope filling and digging joint part of wet and soft zone in loess region |
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| CN103741569A (en) * | 2013-12-18 | 2014-04-23 | 山东省交通科学研究所 | Drainage crack resistance based old road expansion splicing structure and method |
| CN103806432A (en) * | 2014-01-25 | 2014-05-21 | 西安科技大学 | Method for treating foundations in slope filling and digging joint part of wet and soft zone in loess region |
| CN103898925A (en) * | 2014-04-18 | 2014-07-02 | 重庆诚邦路面材料有限公司 | Installation method for anti-sedimentation well cover |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114908630A (en) * | 2022-05-13 | 2022-08-16 | 山东电力工程咨询院有限公司 | Factory road structure and secondary permanent-temporary combined layered construction method |
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| CB03 | Change of inventor or designer information |
Inventor after: Cao Jianxin Inventor after: Ning Pinghua Inventor after: Yi Yingfeng Inventor after: Xiong Yong Inventor after: Yang Hongzhu Inventor after: Peng Gongxun Inventor before: Cao Jianxin Inventor before: Ning Pinghua Inventor before: Peng Gongxun Inventor before: Xiong Yong Inventor before: Yang Hongzhu |
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Address after: 510060 East seat, No. 348 East Ring Road, Guangzhou, Guangdong, Yuexiu District Applicant after: Guangzhou municipal engineering design and Research Institute Co., Ltd. Address before: 510060 East seat, No. 348 East Ring Road, Guangzhou, Guangdong Applicant before: Guangzhou City Engineering Design studies total institute |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161012 |