CN102163246B - Method for determining road surface thickness by using road maintenance cycle - Google Patents
Method for determining road surface thickness by using road maintenance cycle Download PDFInfo
- Publication number
- CN102163246B CN102163246B CN201110071672A CN201110071672A CN102163246B CN 102163246 B CN102163246 B CN 102163246B CN 201110071672 A CN201110071672 A CN 201110071672A CN 201110071672 A CN201110071672 A CN 201110071672A CN 102163246 B CN102163246 B CN 102163246B
- Authority
- CN
- China
- Prior art keywords
- road surface
- surface thickness
- separation
- traffic
- interval
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Road Repair (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention discloses a method for determining road surface thickness by using a road maintenance cycle. The method comprises the following steps of: counting a source maintenance cycle corresponding to a traffic volume at each level and the road surface thickness at each level together; operating a critical maintenance cycle corresponding to an optional dividing point of the intervals of the road surface thickness and the optional dividing point of the intervals of the traffic volume together by using each counted source maintenance cycle; operating a new maintenance cycle corresponding to the optional dividing point of the intervals of the road surface thickness and the optional level of the traffic volume together by using each critical maintenance cycle; operating each end value corresponding to each dividing point of the road surface thickness; operating a relation curve of the new maintenance cycle corresponding to each level of traffic volume and each end value; and receiving the maintenance cycle at an optional level of the traffic volume, and outputting a corresponding road surface thickness value according to the relation curve. A road surface is paved according to the road surface thickness determined through the relation curve which better accords with road conditions, and has higher utilization ratio, and the maintenance cost is lowered.
Description
Technical field
The present invention relates to technical field of highway maintenance technology, be meant a kind of method of confirming road surface thickness through the highway maintenance cycle especially.
Background technology
At present, China mainly is to rely on slip-stick artist's experience to set road surface thickness in carrying out asphalt pavement structure composite design process, and promptly whether surface thickness calculates its flexure index through mechanics method then and meet design requirement with layer end tension index.This method depends on slip-stick artist's experience, causes different slip-stick artists same road being carried out pavement structure when design, possibly obtain different road textural association form, and the Pavement Performance in its tenure of use is certainly will difference bigger.
Based on the medium-capital overhauling surface thickness deterministic process of curing cycle, be intended to the road pavement usability and carry out Whole Process Control.Because it is more to influence the factor of pavement structure usability, like Pavement Structure Combination, each structural material characteristic, climatic environment, the volume of traffic, construction quality etc.For most of influence factor, can't accurately set up the quantitative relationship between itself and the pavement performance.Therefore, the decay rule of road surface usability is the difficult point problem of domestic and international transportation industry always, thereby makes based on the method for designing development of performance comparatively slow.
Because the road surface thickness of present highway is to confirm through slip-stick artist's experience; Cause the performance decay rule on road surface to be not easy to grasp; Cause not reaching designing requirement according to the road surface utilization factor the life cycle lower or road surface that the road surface thickness of confirming is laid; Thereby influence the curing cycle of the highway in later stage, improved the maintenance cost.
Summary of the invention
In view of this; The invention reside in a kind of method of confirming road surface thickness through the highway maintenance cycle that provides; To solve the road surface that the above-mentioned road surface thickness of confirming according to engineering experience is laid, utilization factor the life cycle lower or road surface in road surface does not reach the problem of designing requirement.
For addressing the above problem, embodiments of the invention provide a kind of and confirm to comprise the method for road surface thickness through the highway maintenance cycle:
Add up a source curing cycle of the common correspondence of other volume of traffic of each grade and other road surface thickness of each grade institute; Wherein, the interval of the corresponding volume of traffic of the rank of the said volume of traffic, the interval of the corresponding road surface thickness of the rank of said road surface thickness;
Through each source curing cycle of said statistics, a critical curing cycle of the common correspondence of arbitrary separation institute that each of the arbitrary separation that each of the said road surface thickness of computing is interval and the said volume of traffic is interval;
Through each said critical curing cycle, a new curing cycle of the common correspondence of arbitrary rank institute of each the interval arbitrary separation of the said road surface thickness of computing and the said volume of traffic;
Pairing each end value of each separation of the said road surface thickness of computing;
Through each said new curing cycle and said each end value, the new curing cycle that each volume of traffic rank of computing is corresponding and the relation curve of each said end value;
Receive the curing cycle under arbitrary said volume of traffic rank,, export corresponding road surface thickness value according to said relation curve.
Embodiments of the invention pass through the new curing cycle of source acquisition curing cycle and the corresponding end value of separation of each road surface thickness, thereby obtain more to meet the relation curve of road conditions exactly, confirm more to meet the road surface thickness of road conditions.The road surface utilization factor life cycle higher, the road surface of laying according to the road surface thickness of confirming reaches designing requirement, has reduced the maintenance cost.
Description of drawings
Fig. 1 is the process flow diagram of embodiment one;
Fig. 2 is the process flow diagram of embodiment two;
Fig. 3 is the synoptic diagram of all kinds of separations position among the embodiment;
Fig. 4 is the synoptic diagram that the middle mastery of embodiment is protected the relation curve in cycle;
Fig. 5 is the synoptic diagram of relation curve of the overhaul curing cycle of embodiment.
Embodiment
For clearly demonstrating the scheme among the present invention, provide preferred embodiment below and be described with reference to the accompanying drawings.
Referring to Fig. 1, Fig. 1 is at the process flow diagram of the embodiment of the invention one, may further comprise the steps:
Step S11: a source curing cycle adding up the common correspondence of other volume of traffic of each grade and other road surface thickness of each grade institute; Wherein, the interval of the corresponding volume of traffic of the rank of the said volume of traffic, the interval of the corresponding road surface thickness of the rank of said road surface thickness.
Source process curing cycle of statistics comprises: select many highway section highway sections; These highway sections are divided into each rank according to the different volume of traffic and road surface thickness; M (M >=1) bar highway section in other volume of traffic of each grade and each rank road surface thickness; Average curing cycle in these highway sections of computing, be also referred to as source curing cycle the average curing cycle of computing.
Step S12: through each source curing cycle of said statistics, a critical curing cycle of the common correspondence of arbitrary separation institute that each of the arbitrary separation that each of the said road surface thickness of computing is interval and the said volume of traffic is interval.
Step S13: through each said critical curing cycle, a new curing cycle of the common correspondence of arbitrary rank institute of each the interval arbitrary separation of the said road surface thickness of computing and the said volume of traffic.
Step S14: pairing each end value of each separation of the said road surface thickness of computing.
Step S15: through each said new curing cycle and each end value, the new curing cycle that each volume of traffic rank of computing is corresponding and the relation curve of each end value.
Step S16: receive the curing cycle under arbitrary said volume of traffic rank,, export corresponding road surface thickness value according to said relation curve.
Step in the above embodiments one; The source is optimized curing cycle, through the road surface thickness of confirming again the curing cycle after optimizing, owing to the source of the employing road surface thickness and the volume of traffic of curing cycle; Thereby the request for utilization and the road conditions that meet the road surface more; Under the prerequisite that satisfies service efficiency and designing requirement, can reduce the maintenance cost, reduce the maintenance number of times.
In the above embodiments one, can the road surface thickness and the volume of traffic be divided into a plurality of ranks, to different stage corresponding interval curing cycle add up, thereby obtain relation curve more exactly, confirm road surface thickness.Other is divided to specify level through embodiment two below, and the optimizing process of curing cycle, referring to Fig. 2, may further comprise the steps:
Step S21: add up any two ranks in four other volume of traffic of level and three other road surface thickness of level a common corresponding source curing cycle; Wherein, the interval of the corresponding volume of traffic of the rank of the said volume of traffic, the interval of the corresponding road surface thickness of the rank of said road surface thickness.
In the present embodiment, referring to table 1, with the volume of traffic be divided into light to extra heavy four grades, with road surface thickness divide thin, in, thick be Three Estate.
Table 1
Interval that each grade is corresponding different, the corresponding interval of light grade be (0,6000), the corresponding interval of extra heavy grade be (12000, ∞), the interval of thin grade correspondence is (5,8), the interval of thick grade correspondence be (15, ∞).
Each rank of statistics corresponding each source curing cycle can be referring to table 2,
Table 2
In table 2, each other volume of traffic of level and each other road surface thickness of level all corresponding source curing cycle, the average curing cycle in many highway sections that the certain interval volume of traffic of source representative curing cycle and road surface thickness are interior.Because certain interval volume of traffic and road surface thickness constitute a scope.Therefore, the source also can be described as the bin data curing cycle.
Step S22: obtain each metadata through each bin data, the some metadata is also referred to as critical curing cycle.The interval of the corresponding road surface thickness of each critical difference curing cycle, an interval interior separation of the volume of traffic.
In the process of bin data-switching for a metadata, can change according to the character of separation, comprising:
Each separation as a metadata in the table 2 is divided into three types of a, b, c, as shown in Figure 3,
In Fig. 3,1) four angle points on border like a point, are called the category-A point; 2) frontier point except that angle point like the b point, is called the category-B point; 3) the inner each point of period profile table like the c point, is called C class point.
If the separation of said road surface thickness is the separation of the interval right endpoint of interval left end point of minimal level correspondence or maximum level correspondence, the said volume of traffic is the left end point in the corresponding interval of minimal level or the right endpoint in the corresponding interval of maximum level; Be the category-A point, then with said maximum level and minimal level, two minimal level or two the pairing source of maximum level curing cycles as said critical curing cycle.
The category-A point belongs to four angle points in the periodic table; A point like the upper left corner; The a separation is the pairing critical curing cycle of right endpoint of the maximum level (extra heavy rank) of the interval left end point of the minimal level correspondence of road surface thickness and the volume of traffic, then with the minimal level of road surface thickness and the pairing source of maximum level X curing cycle of the volume of traffic
11As critical curing cycle, promptly 3.0.Can think that also influencing the bin of such some data has only one, therefore, can directly give this point, only receive X like a point value with near the bin data such point
11Influence, then a point value is taken as X
11, promptly get 3.0 in the table 2.Angle point for the upper right corner; The right endpoint in the interval of the right endpoint in the interval of the maximum level of the corresponding road surface thickness of this angle point and the maximum level of the volume of traffic; Then critical curing cycle of the value of this angle point is 4.4, can analogize critical curing cycle of the value of the angle point in the lower left corner and the lower right corner with this.
If the separation of the corresponding interval right endpoint of the separation of said road surface thickness left end point that to be minimal level corresponding interval or maximum level, the said volume of traffic is the separation between between two adjacent regions; It is the category-B point; The mean value of corresponding two ranks corresponding respectively two source curing cycles between the adjacent region of the minimal level of the said road surface thickness of computing or maximum level and the said volume of traffic then is as said critical curing cycle.
The category-B point: the category-B point belongs to the frontier point of other except that angle point in the periodic table; Be such point corresponding be the separation of traffic rank and road surface thickness grade; Like the b separation among Fig. 3; The end points in the interval of the corresponding road surface thickness of b point is that the separation in interval of left end point, the volume of traffic of minimal level (approaching) is the separation between (in, heavy) between two adjacent regions, and then the b point value is X
21, X
31The mean value of two source values curing cycle, critical curing cycle of the value that this mean value is ordered as b.Can think that also influencing the bin of such some data has two, give this point behind desirable its mean value, receive X like the b point value
21And X
31Influence, then the b point value is taken as AVERAGE (X
21, X
31).
If the separation of the separation of the said volume of traffic left end point that to be minimal level corresponding interval or the right endpoint of maximum level, said road surface thickness is the separation between between two adjacent regions; It is the category-B point; The mean value of corresponding two ranks corresponding respectively two source curing cycles between the separation adjacent region of the minimal level of the said volume of traffic of computing or maximum level and said road surface thickness then is as said critical curing cycle.
The d separation among Fig. 3 for example, the end points in the interval of the corresponding volume of traffic of d point are that the end points in interval of left end point, road surface and the thickness of minimal level (gently) is the separation between (in, thick) between two adjacent regions, and then the d point value is X
42, X
43The mean value of two source values curing cycle, critical curing cycle of the value that this mean value is ordered as d.Can think that also influencing the bin of such some data has two, give this point behind desirable its mean value, receive X like the d point value
42And X
43Influence, then the d point value is taken as AVERAGE (X
42, X
43).
If the separation of the separation of the said volume of traffic and said road surface thickness is all between two intervals and be same; It is C class point; The mean value of corresponding two rank pairing four curing cycles between the separation adjacent region of corresponding two ranks and said road surface thickness between the separation adjacent region of the said volume of traffic of computing then is as said critical curing cycle.The separation c among Fig. 3 for example, c point are between the corresponding interval of the weight of the volume of traffic, extra heavy rank, between the corresponding interval of thin, middle rank of road surface thickness, be X the critical curing cycle of c point correspondence
11, X
12, X
21, X
22Mean value.Can think that also influencing the bin of such some data has four, give this point behind desirable its mean value, receive X like the c point value
11, X
12, X
21, X
22Influence, then the c point value is taken as AVERAGE (X
11, X
12, X
21, X
22).
Through above-mentioned process, can be through obtaining source curing cycle each critical curing cycle as shown in table 3.
Table 3
Step S23: through each said critical curing cycle, the arbitrary separation that each of the said road surface thickness of computing is interval and a pairing new curing cycle of arbitrary rank of the said volume of traffic.
Because be five rows, four column data each critical curing cycle, need be corresponding with each traffic rank, then need convert the source into the four rows and four columns data curing cycle.Transfer process comprises:
The mean value of the level of the separation in the interval of the arbitrary road surface thickness of computing and arbitrary volume of traffic other interval two separation corresponding two critical curing cycles, with the mean value of said two critical curing cycles as said new curing cycle.As shown in table 4:
Table 4
| Extra heavy | 3.08 | 3.78 | 4.59 | 4.70 |
| Heavy | 3.70 | 4.35 | 5.20 | 5.40 |
| In | 4.75 | 5.20 | 5.89 | 6.13 |
| Gently | 5.28 | 5.68 | 6.38 | 6.68 |
Can the data of respectively arranging the corresponding position of being close to be averaged, promptly first row averages with the data of the second row relevant position, second arranges and the data of the 3rd row relevant position are averaged, by that analogy.The four row's data that obtain thus, corresponding light, in, heavy, extra heavy four traffic ranks.
3.08 ≈ (3.00+3.15)/2 3.7=(3.15+4.25)/2 for example
6.68≈(6.45+6.90)/2
Step S24: pairing each end value of each separation of the said road surface thickness of computing.
Computing end value process can comprise according to the character computing or the setting of separation:
If the separation of said road surface thickness is the left end point in the corresponding interval of minimal level, then that the minimal level correspondence of said road surface thickness is interval minimum thickness value is as said end value.
For example: separation is for approaching the interval left end point of grade correspondence, and this left end point also is the corresponding interval left end point of minimal level, then with the end value of the minimum thickness value 5 that approaches grade in the table 1 as correspondence.
If the separation of said road surface thickness is between between two adjacent regions, then that said separation left side is the interval maximum ga(u)ge value and the mean value of the minimum thickness value between right side region are as said end value.
For example: separation is between thin grade and the corresponding interval of middle grade, and the mean value 8.5 that then will approach the interval minimum thickness value 9 of interval maximum ga(u)ge value 8 of grade correspondence and middle grade correspondence is as end value.Equally, separation is between middle grade and the corresponding interval of thick grade, and then end value is 11 and 15 average 13.
If the separation of said road surface thickness is the right endpoint in the corresponding interval of maximum level, then in the corresponding interval of the maximum level of said road surface thickness, through the said end value of following formula operation;
Wherein:
End value when the separation of H-road surface thickness is the corresponding interval right endpoint of maximum level;
N-highway section sequence number;
h
iThe surface thickness value in-Di i highway section;
k
iThickness is h in the-Di i highway section
iThe road number of lines.
For example: separation is thick rank, is the corresponding interval right endpoint of maximum level, n=4,
Statistics in the thick rate range is as shown in table 5:
Table 5
Should be according to formula: (15*10+16*8+17*5+18*2)/(10+8+5+2), result of calculation is 16.
Step S25: through each said new curing cycle and said each end value, the new curing cycle that each volume of traffic rank of computing is corresponding and the relation curve of each said end value.
Since the average curing cycle among the step S21 can in the curing cycle of repairing, also can be overhaul curing cycle.The relation curve that obtains is also inequality, and the relation curve among Fig. 4 is the relation curve that middle mastery is protected the cycle, and the relation curve of Fig. 5 is the overhaul relation curve of curing cycle.
Step S26: receive the curing cycle under arbitrary said volume of traffic rank,, export corresponding road surface thickness value according to said relation curve.
Preferably, first relation curve that obtains relation curve according to the cycle of protecting of mastery in average, to obtain relation curve curing cycle according to overhaul be second relation curve.When confirming one-tenth-value thickness 1/10, the maximal value from the road surface thickness value of confirming according to said first relation curve, second relation curve is as the road surface thickness value of output.
Through three other road surface thickness of level and four other volume of traffic of level among the embodiment; To different stage corresponding interval curing cycle add up; Through the new curing cycle of source acquisition curing cycle and the corresponding end value of separation of each road surface thickness; Thereby obtain more to meet the relation curve of road conditions exactly, confirm more to meet the road surface thickness of road conditions.The road surface utilization factor life cycle higher, the road surface of laying according to the road surface thickness of confirming reaches designing requirement, has reduced the maintenance cost.
For the method for being set forth among each embodiment of the present invention, all within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. confirm to it is characterized in that the method for road surface thickness through the highway maintenance cycle for one kind, comprising:
Add up a source curing cycle of the common correspondence of other volume of traffic of each grade and other road surface thickness of each grade institute; Wherein, the interval of the corresponding volume of traffic of the rank of the said volume of traffic, the interval of the corresponding road surface thickness of the rank of said road surface thickness;
Through each source curing cycle of said statistics, a critical curing cycle of the common correspondence of arbitrary separation institute that each of the arbitrary separation that each of the said road surface thickness of computing is interval and the said volume of traffic is interval;
Through each said critical curing cycle, a new curing cycle of the common correspondence of arbitrary rank institute of each the interval arbitrary separation of the said road surface thickness of computing and the said volume of traffic;
Pairing each end value of each separation of the said road surface thickness of computing;
Through each said new curing cycle and said each end value, the new curing cycle that each volume of traffic rank of computing is corresponding and the relation curve of each said end value;
Receive the curing cycle under arbitrary said volume of traffic rank,, export corresponding road surface thickness value according to said relation curve;
The process of computing said critical curing cycle comprises at least:
If the separation of said road surface thickness left end point that to be minimal level corresponding interval or the corresponding interval right endpoint of maximum level and the separation of the said volume of traffic are corresponding interval left end point of minimal level or the corresponding interval right endpoint of maximum level, then with said maximum level and minimal level, two minimal level or two the pairing source of maximum level curing cycles as said critical curing cycle;
If the separation of the corresponding interval right endpoint of the separation of said road surface thickness left end point that to be minimal level corresponding interval or maximum level and the said volume of traffic is the separation between between two adjacent regions; The mean value of corresponding two ranks corresponding respectively two source curing cycles between the adjacent region of the minimal level of the said road surface thickness of computing or maximum level and the said volume of traffic then is as said critical curing cycle;
If the separation of corresponding interval right endpoint of the separation of said volume of traffic left end point that to be minimal level corresponding interval or maximum level and said road surface thickness is the separation between between two adjacent regions; The mean value of corresponding two ranks corresponding respectively two source curing cycles between the separation adjacent region of the minimal level of the said volume of traffic of computing or maximum level and said road surface thickness then is as said critical curing cycle;
If the separation of the separation of the said volume of traffic and said road surface thickness is all between two intervals and be same; The mean value of corresponding two rank pairing four curing cycles between the separation adjacent region of corresponding two ranks and said road surface thickness between the separation adjacent region of the said volume of traffic of computing then is as said critical curing cycle;
The process of computing said new curing cycle comprises:
The mean value of two separation corresponding two critical curing cycles in the separation of the arbitrary said road surface thickness of computing and the interval of arbitrary volume of traffic, with the mean value of said two critical curing cycles as said new curing cycle;
Pairing each end value process of each separation of the said road surface thickness of computing comprises:
If the separation of said road surface thickness is the left end point in the corresponding interval of minimal level, then that the minimal level correspondence of said road surface thickness is interval minimum thickness value is as said end value;
If the separation of said road surface thickness is between between two adjacent regions, then that said separation left side is the interval maximum ga(u)ge value and the mean value of the minimum thickness value between right side region are as said end value;
If the separation of said road surface thickness is the right endpoint in the corresponding interval of maximum level, then in the corresponding interval of the maximum level of said road surface thickness, through the said end value of following formula operation;
Wherein:
End value when the separation of H-road surface thickness is the corresponding interval right endpoint of maximum level;
N-highway section sequence number;
h
iThe surface thickness value in-the i highway section;
k
iThickness is h in-the i highway section
iThe road number of lines.
2. method according to claim 1 is characterized in that, the source of said statistics is curing cycle under each other volume of traffic of level and each other road surface thickness of level, the average curing cycle in M bar highway section; Said M is >=1 positive integer.
3. method according to claim 2 is characterized in that, said source is that mastery is protected cycle or average overhaul curing cycle in said M bar highway section average curing cycle.
4. method according to claim 3 is characterized in that, first relation curve that obtains according to the cycle of protecting of mastery in said respectively, second relation curve that obtains curing cycle according to said overhaul;
The road surface thickness value of said output is the maximal value in the road surface thickness value of confirming according to said first relation curve, second relation curve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110071672A CN102163246B (en) | 2011-03-23 | 2011-03-23 | Method for determining road surface thickness by using road maintenance cycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110071672A CN102163246B (en) | 2011-03-23 | 2011-03-23 | Method for determining road surface thickness by using road maintenance cycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102163246A CN102163246A (en) | 2011-08-24 |
| CN102163246B true CN102163246B (en) | 2012-08-29 |
Family
ID=44464471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110071672A Active CN102163246B (en) | 2011-03-23 | 2011-03-23 | Method for determining road surface thickness by using road maintenance cycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102163246B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI107617B (en) * | 1999-03-17 | 2001-09-14 | Tielaitos | road marking |
| CN101239796A (en) * | 2008-01-16 | 2008-08-13 | 武汉理工大学 | High-performance low-noise asphalt pavement conserving material and preparation method thereof |
| CN101923651B (en) * | 2010-09-16 | 2012-10-10 | 中公高科养护科技股份有限公司 | Calibration method of automatic recognition accuracy of damage data based on pavement images |
-
2011
- 2011-03-23 CN CN201110071672A patent/CN102163246B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102163246A (en) | 2011-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Nguyen et al. | Estimating the material stock of roads: the Vietnamese case study | |
| Xu et al. | Reverse logistics network-based multiperiod optimization for construction and demolition waste disposal | |
| Engström et al. | Multi‐functionality of nature‐based and other urban sustainability solutions: New York City study | |
| Gontia et al. | Spatial analysis of urban material stock with clustering algorithms: A Northern European case study | |
| CN107944126B (en) | Method and device for determining water content of water-drive reservoir | |
| CN102799954A (en) | Method and system for multi-objective optimization applied to risk assessment | |
| Hang et al. | Multi‐region multi‐sector contributions to drivers of air pollution in China | |
| CN105005695A (en) | Wave scatter diagram chunking equivalent method for time domain fatigue analysis | |
| CN102163246B (en) | Method for determining road surface thickness by using road maintenance cycle | |
| Li et al. | Non-hydraulic factors analysis of pipe burst in water distribution systems | |
| Didelot et al. | Balancing energy efficiency and fossil fuel: the role of carbon pricing | |
| Guo et al. | Pavement rehabilitation strategy selection for steel suspension bridges based on probabilistic life-cycle cost analysis | |
| CN108446792A (en) | A kind of optimization method of the iteration between Evolution Paths and the object of planning | |
| CN105023108B (en) | A kind of acquisition methods and system to marking data | |
| Shao et al. | Speed-density relation model of congested traffic flow under minimum safety distance constraint | |
| Wu et al. | Study on the construction of the database of energy-saving building wall's thermal performance in Hangzhou | |
| Onsarigo et al. | An introduction to Environmental Value Engineering (EVE) and the EVE assessment of horizontal directional drilling (HDD) versus open-cut construction | |
| CN113420360B (en) | Building column net size acquisition method based on room area requirement | |
| Janoff et al. | Economic analysis of roadway lighting | |
| CN202584124U (en) | Road data processing system based on dynamic segmentation technology | |
| Qiu et al. | Impacts of nighttime-only truck traffic regulation on pavement performance | |
| CN104484429A (en) | Data contrast analysis method and data contrast analysis system | |
| Chen | Research on the Dilemma of the Protection of Rural Historical Buildings | |
| Sluijter | Development of a modular system for circular timber highway bridges | |
| An | Redesign Frequency for Fixed-time and Vehicle-actuated Signal Controllers at A Right-turning Channelized Intersection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 100088 Beijing city Haidian District Xitucheng Road No. 8 Applicant after: Zhonggong Hi-tech Conservation Technology Co.,Ltd. Address before: 100088 Beijing city Haidian District Xitucheng Road No. 8 Applicant before: RoadMaint (Beijing) Maintenance Technology Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: BEIJING ROADMAINT TECHNOLOGY CO., LTD. TO: ROADMAINT MAINTENANCE TECHNOLOGY CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |