CN201713743U - Asphalt concrete pavement structure of roads in Pingyuan County in Eastern Henan Province - Google Patents
Asphalt concrete pavement structure of roads in Pingyuan County in Eastern Henan Province Download PDFInfo
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- CN201713743U CN201713743U CN2009200914835U CN200920091483U CN201713743U CN 201713743 U CN201713743 U CN 201713743U CN 2009200914835 U CN2009200914835 U CN 2009200914835U CN 200920091483 U CN200920091483 U CN 200920091483U CN 201713743 U CN201713743 U CN 201713743U
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Abstract
The utility model discloses an asphalt concrete pavement structure of roads in Pingyuan County in Eastern Henan Province. The pavement structure comprises a surface layer and a bed layer adopting a three-layer structure or a two-layer structure; the surface layer is made of asphalt concrete or asphalt macadam; and the bed layer is made of cement soil lime, cement graded broken stone, soil lime and lime stabilized soil. By adopting the typical pavement structure, the structural design of the pavement is standard and diagrammatic, the use is convenient, the design cycle is greatly reduced, the quantity of design work is reduced, the work efficiency is improved, and the design cost is saved.
Description
Technical field
The utility model relates to the highway pavement structure, especially relates to the Henan former counties and townships highway asphalt concrete pavement structure of conquering east.
Background technology
There are some problems in China's former counties and townships highway asphalt concrete pavement structure design of conquering east in existing Henan, and it mainly shows as follows: the one, and design objective is unique.Although comprise flexure and flexural tensile stress checking computations index in the Asphalt Pavement Structure Design, but it is actual in Asphalt Pavement Structure Design, flexure becomes unique index of road structure design, that is to say according to existing method for normalizing, under the condition that the pavement design flexure satisfies, flexural tensile stress checking computations certainly by, it is unique to make design objective become; The 2nd, design objective is uncontrollable.Design objective should be the control index that road structure may produce damage, promptly design a model with the road structure damage model should be consistent, but actual conditions are told us, the flexure index can't be unified mutually, coordinate with multiple destruction type and criterion of failure, the damage and the Design Mode of existing flexible pavement differ widely, and design objective performs practically no function; The 3rd, theoretical checking computations fixed condition is inaccurate.According to the existing highway asphalt pavement design criterion, when carrying out the checking computations of asphalt pavement structure flexural tensile stress, suppose that the interlayer contact conditions is a Continuous Contact, under this condition, carry out stress checking calculation, the asphalt surface course of semi-rigid type base end face is in pressured state, so the curved fatigue failure of drawing can not take place asphalt surface course.In fact, be difficult to accomplish the continuous of bitumen layer and semi-rigid type base, even between the upper, middle and lower surface layer of pitch, owing to the reasons such as noncontinuity of construction pollution, construction, all might be partial continuous or slip between the bitumen layer, under the effect of extraneous factors such as load, water, the change of interface layer connection status is inevitable, assumed conditions when therefore road structure designs is inaccurate, and in this case, the accuracy of theoretical checking computation results is well imagined; The 4th, to other road structure form restrictions.Because the existence of Asphalt Pavement Deflection design objective and improving constantly of index standard, the flexbile base asphalt pavement structure of a large amount of successful Application can't be applied in China abroad, although also listed the form of structure of flexbile base in the standard, in fact just determined that from design objective itself flexible structure can not applicable destiny; The 5th, the flexure regression formula is extension arbitrarily.Flexure formula in Flexible Pavement Design, 1978 standard is the basis of current highway asphalt pavement design criterion, the relational expression that flexure originally and the current axle of accumulative total carry number of times obtains according to domestic asphalt pavement structure and road conditions condition are at that time investigated recurrence, now road structure form and traffic loading situation and be very different before 30 years, though the key index flexure formula of decision pavement design is several times revised for many years, it is worth suspecting to the compliance under the existence conditions transportation condition lotus road structure form; The 6th, ground surface material design parameters and actual pavement performance lack relevance; Pavement design adopts theoretical calculation method, seems very advanced, and in fact the material design parameters is generally just determined by laboratory test.Abroad much studies show that, ground surface material is in actual use, relation between its indoor performance and the pavement performance does not have good correlation, and our designer is in the road structure design process, the general only simple approach of the material parameter intermediate value by getting specification recommends designs, more out of the question go to set up the relation of indoor mechanical property of ground surface material and open-air pavement performance, so the in fact just individual form of its design process.
Summary of the invention
The technical problems to be solved in the utility model is: under China's pavement design standard instructs, weather, soil geological conditions and material source etc. according to an area carry out rational road structure design, make road structure design specificationsization, pictorialization, reduce the design work amount, optimize the road structure design, make aspects such as the road structure designer selects at material, thickness is determined that bigger range of choice be arranged, thereby determine road structure safe and reliable, economical rationality.
The utility model is the instructions for use according to road vehicles composition, traffic volume size, category of roads road pavement, in conjunction with situations such as the distribution of weather along the line, the hydrology, geology and local road materials, construction experiences, determine asphalt pavement structural layer time and thickness.
The research situation of the former counties and townships highway pavement structure of conquering east from Henan, when definite low-volume highway typical case road structure, all adopt the method that the traffic volume and soil matrix are carried out classification, adopt different Laminate construction thickness according to local conditions, different various combinations, method for designing is similar.The surface material that most of highways adopt is asphalt macadam, bituminous concrete or Portland Cement Concrete Surface Course, the material of also using always nothing more than us that basic unit adopts: cement stabilized soil (gravel), lime stabilized soil (gravelly soil), cement and lime Stabilized Soil, cement stabilized macadam, graded broken stone, natural gravel etc.
The Henan of the present invention former counties and townships highway asphalt concrete pavement structure of conquering east is three layers or the two-layer structure that comprises surface layer and basic unit, described surface layer adopts bituminous concrete or asphalt macadam, and described basic unit adopts cement and lime soil or the cement grating is broken or rendzinas or lime stabilized soil.
As one of technical scheme optimal way is bituminous concrete 3cm; 3% cement, 12% lime stabilized soil 15cm; 10% rendzinas 15cm;
As two of technical scheme optimal way are asphalt macadam 3cm, heated bitumen lower seal, 3% cement, 12% rendzinas 16cm, 10% rendzinas 20cm;
As three of technical scheme optimal way are asphalt macadam 3cm, heated bitumen lower seal, 12% rendzinas 18cm, 10% rendzinas 15cm;
As four of technical scheme optimal way are asphalt macadam 3cm, heated bitumen lower seal, the broken 15cm of cement grating, 10% rendzinas 20cm;
As five of technical scheme optimal way are asphalt macadam 3cm, heated bitumen lower seal, 12% rendzinas 16cm, 10% rendzinas 15cm;
As six of technical scheme optimal way are asphalt macadam 3cm, heated bitumen lower seal, 12% rendzinas 15cm, 10% rendzinas 15cm;
As seven of technical scheme optimal way are asphalt macadam 3cm, heated bitumen lower seal, 3% cement, 12% rendzinas 15cm, 10% rendzinas 15cm; As eight of technical scheme optimal way are asphalt macadam 3cm, heated bitumen lower seal, 12% rendzinas 16cm, 10% rendzinas 15cm; As nine of technical scheme optimal way are asphalt macadam 3cm, heated bitumen lower seal, 12% rendzinas 15cm, 10% rendzinas 12cm;
The technique effect that the utility model produces is: adopt typical road structure of the present utility model, make the road structure design specificationsization, pictorialization, form is eye-catching, with strong points, easy to use, shortened the design cycle greatly, reduce the design work amount, improved operating efficiency, saved design cost, improve workman's construction technology qualification, prolong road application life, investment promotion is effectively balanced and the road structure designer is selected at material, there is bigger range of choice aspects such as thickness is definite, do not need to do big calculating and just can determine safe and reliable, the road structure of economical rationality, thus avoid owing to the structure selection improper or thickness to determine that the improper road structure that causes is uneconomical or dangerous.
Description of drawings
Fig. 1 is three layers of road structure schematic diagram of the utility model.
Fig. 2 is two layers of road structure schematic diagram of the utility model.
In Fig. 1,1, surface layer; 2, basic unit one; 3, basic unit two.
In Fig. 2,1, surface layer; 2, basic unit.
The specific embodiment
The research situation of the former counties and townships highway asphalt concrete pavement structure of conquering east from Henan, when definite low-volume highway typical case road structure, the method of classification is carried out in employing to the traffic volume and soil matrix, adopt different Laminate construction thickness according to local conditions, different various combinations, method for designing is similar.The surface material that most of highways adopt is asphalt macadam, bituminous concrete or Portland Cement Concrete Surface Course, the material of also using always nothing more than us that basic unit adopts: cement stabilized soil (gravel), lime stabilized soil (gravelly soil), cement and lime Stabilized Soil, cement stabilized macadam, graded broken stone, natural gravel etc.
The Henan former counties and townships highway asphalt concrete pavement structure of conquering east, surface layer is thick to be 3～7cm; Basic unit is thick to be 20cm, adopts materials such as cement stabilized macadam, cement gravel; The base bed thickness is 30～55cm, adopts materials such as two-ash soil and rendzinas.It is as follows that structure is implemented on different road surfaces:
The Henan former counties and townships asphalt highway typical structure table of conquering east
When selecting the flexible pavement typical structure for use, should note following some:
(1) is in humidity or crosses wet condition when roadbed, can select for use coarse-grained soil or lime or cement stabilizing fine grained soils, the gravel bed course is set, dewatering measure such as draining sewer is set under gutter handles as the roadbed filler.
(2) produce the frost boil location at seasonal frost region, should establish the gravel bed course, the thickness of bed course is the difference of total thickness of pavement and minimum antifreeze thickness, and is not less than 10cm.
(3) be easy to generate the location of differential settlement or distortion at roadbed, stabilized with inorganic binder soil padding or gravel bed course should be set, reduce the adverse effect of differential settlement or inhomogeneous deformation road pavement.
When (4) specifically selecting the thickness of basic unit, subbase for use, need take all factors into consideration according to the soil matrix situation of locality, traffic volume size, local material supply etc.
When (5) specifically selecting in the table road structure for use, should consider that road structure and water, warm situation adapt.
Claims (5)
1. a Henan former counties and townships highway asphalt concrete pavement structure of conquering east, it is characterized in that, this road structure is three layers or the two-layer structure that comprises surface layer and basic unit, described surface layer adopts bituminous concrete or asphalt macadam, and described basic unit adopts cement and lime soil or the cement grating is broken or rendzinas or lime stabilized soil.
2. road structure according to claim 1 is characterized in that, described road structure is asphalt macadam 3cm heated bitumen lower seal, 12% rendzinas 18cm, 10% rendzinas 15cm.
3. road structure according to claim 1 is characterized in that, described road structure is asphalt macadam 3cm heated bitumen lower seal, the broken 15cm of cement grating, 10% rendzinas 20cm.
4. road structure according to claim 1 is characterized in that, described road structure is asphalt macadam 3cm heated bitumen lower seal, 12% rendzinas 16cm, 10% rendzinas 15cm.
5. road structure according to claim 1 is characterized in that, described road structure is asphalt macadam 3cm heated bitumen lower seal, 12% rendzinas 15cm, 10% rendzinas 15cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200914835U CN201713743U (en) | 2009-07-04 | 2009-07-04 | Asphalt concrete pavement structure of roads in Pingyuan County in Eastern Henan Province |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200914835U CN201713743U (en) | 2009-07-04 | 2009-07-04 | Asphalt concrete pavement structure of roads in Pingyuan County in Eastern Henan Province |
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| CN201713743U true CN201713743U (en) | 2011-01-19 |
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| CN2009200914835U Expired - Fee Related CN201713743U (en) | 2009-07-04 | 2009-07-04 | Asphalt concrete pavement structure of roads in Pingyuan County in Eastern Henan Province |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031788A (en) * | 2013-01-07 | 2013-04-10 | 天津市市政工程设计研究院 | Method for designing long-life composite pavement structure of underground road |
| CN103290780A (en) * | 2013-06-18 | 2013-09-11 | 浙江大学宁波理工学院 | Road and bridge joint structure and method using structure for eliminating non-uniform settlement |
| US20140169879A1 (en) * | 2012-12-10 | 2014-06-19 | The Texas A&M University System | Co-Polymer Soil Subgrade Binders |
| CN107313319A (en) * | 2017-05-25 | 2017-11-03 | 江苏海川新材料科技有限公司 | A kind of double glazing concrete of fibre tendon pavement structure |
| CN108951349A (en) * | 2018-07-23 | 2018-12-07 | 华新水泥股份有限公司 | A kind of pervious concrete structure and method for paving |
| CN109554979A (en) * | 2017-09-25 | 2019-04-02 | 白晓松 | A kind of permeable water storage municipal administration pavement pavement structure |
| CN109680580A (en) * | 2019-01-24 | 2019-04-26 | 温州立胜建设有限公司 | A kind of town road discharge structure |
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2009
- 2009-07-04 CN CN2009200914835U patent/CN201713743U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140169879A1 (en) * | 2012-12-10 | 2014-06-19 | The Texas A&M University System | Co-Polymer Soil Subgrade Binders |
| US9441332B2 (en) * | 2012-12-10 | 2016-09-13 | The Texas A&M University System 3369 Tamu | Co-polymer soil subgrade binders |
| CN103031788A (en) * | 2013-01-07 | 2013-04-10 | 天津市市政工程设计研究院 | Method for designing long-life composite pavement structure of underground road |
| CN103290780A (en) * | 2013-06-18 | 2013-09-11 | 浙江大学宁波理工学院 | Road and bridge joint structure and method using structure for eliminating non-uniform settlement |
| CN107313319A (en) * | 2017-05-25 | 2017-11-03 | 江苏海川新材料科技有限公司 | A kind of double glazing concrete of fibre tendon pavement structure |
| CN109554979A (en) * | 2017-09-25 | 2019-04-02 | 白晓松 | A kind of permeable water storage municipal administration pavement pavement structure |
| CN108951349A (en) * | 2018-07-23 | 2018-12-07 | 华新水泥股份有限公司 | A kind of pervious concrete structure and method for paving |
| CN109680580A (en) * | 2019-01-24 | 2019-04-26 | 温州立胜建设有限公司 | A kind of town road discharge structure |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20110704 |