CN104915480B - Semi-rigid asphalt pavement crack damage state determines method - Google Patents
Semi-rigid asphalt pavement crack damage state determines method Download PDFInfo
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- CN104915480B CN104915480B CN201510267683.1A CN201510267683A CN104915480B CN 104915480 B CN104915480 B CN 104915480B CN 201510267683 A CN201510267683 A CN 201510267683A CN 104915480 B CN104915480 B CN 104915480B
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- 230000006378 damage Effects 0.000 title claims abstract description 42
- 239000010426 asphalt Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012360 testing method Methods 0.000 claims abstract description 24
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 6
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 6
- 208000027418 Wounds and injury Diseases 0.000 claims description 7
- 208000014674 injury Diseases 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000009472 formulation Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000003801 milling Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Abstract
The present invention relates to a kind of semi-rigid asphalt pavement crack damage state to determine method, comprises the following steps that：1) lossless deflection testing is carried out to semi-rigid type base asphalt pavement crack top surface, at each 15cm in crack both sides, at each 50cm in crack both sides, at each 100cm in crack both sides, at each 150cm in crack both sides and at each 200cm in crack both sides, obtains the deflection value of each test point；2) flexure curve is drawn by distance of the test point away from crack and its deflection value；3) it is linear and maximum deflection value synthesis determines crack damage state according to flexure curve.Beneficial effects of the present invention：This method fracture both sides certain limit carries out deflection testing, the flexure curve accurate judgement crack coverage drawn according to distance and its deflection value of the test point apart from crack and its faulted condition.It this method solve existing semi-rigid asphalt pavement crack damage state appearance observation and judge the problem of inaccurate, science, accurate, economic foundation can be provided for the formulation of pavement maintenance ＆ rehabilitation scheme.
Description
Technical field
The present invention relates to field of road, specifically provides a kind of semi-rigid asphalt pavement faulted condition determination side
Method.
Background technology
A large amount of semi-rigid asphalt pavements that China is built early stage subsequently enter maintenance, maintenance and transformation phase, existing to support
Shield specification pavement structure evaluation method disease section deflection testing position is not arranged, and use it is spaced apart enter
The method of row deflection testing, often generation pavement cracking is serious, but the situation that flexure deliberated index is excellent, and is unable to accurate evaluation road
Face Structural defect actual carrying capacity.Determination for the faulted condition in crack, conventional method are determined using the observation of crack outward appearance.And
Found by lossless deflection testing：Different crack damage degree are different；Some cracks influence very little to flexure, at crack location
Flexure, it is essentially identical with crack location flexure does not occur, it is only necessary to carry out cementation of fissures processing；The larger crack of degree of injury,
The flexure difference of flexure and neighboring area at crack is larger, and flexure difference is even up to more than 3 times, it is necessary to carries out milling weight
Paving.Different crack processing method engineering costs differs more than 10 times, existing semi-rigid asphalt pavement crack damage state
The method of determination has influence on the science and economy of pavement maintenance ＆ rehabilitation solution formulation.
The content of the invention
The technical assignment of the present invention is to be directed to above-mentioned the deficiencies in the prior art, there is provided a kind of semi-rigid asphalt pavement damage
Hinder state and determine method.Accurately and reliably semi-rigid asphalt pavement faulted condition can be obtained using this method.
Specific technical scheme of the invention is as follows：
Semi-rigid asphalt pavement faulted condition determines method, is specifically：
This method according at crack, the lossless deflection testing data of crack both sides determine flexure coverage, and according to it
Deflection value size and its curve feature in coverage, determine crack and its both sides faulted condition.
Specifically, this method comprises the following steps：
A) the lossless deflection testing of crack coverage
To semi-rigid type base asphalt pavement crack top surface, at each 15cm in crack both sides, at each 50cm in crack both sides, crack two
At each 100cm in side, at each 150cm in crack both sides, and lossless deflection testing is carried out at each 200cm in crack both sides, obtain each detection
The deflection value of point.
B) flexure Drawing of Curve
Using crack as origin, the horizontal vertical line in fracture length direction is abscissa, and each test point deflection value is ordinate
Draw flexure curve.
C) flexure tracing analysis and crack damage state determine
The symmetry of the damage of crack both sides pavement structure is determined according to the linear symmetry of flexure curve, and according to deflection value
Variation tendency of the line along flaw level vertical line direction determines crack damage scope；According to maximum deflection value and the ratio of design deflection value
Compared with the degree of injury for determining crack；According to identified crack damage scope, the symmetry of crack both sides pavement structure damage, split
Stitch degree of injury synthesis and determine crack damage state.
It is following prominent that the semi-rigid asphalt pavement crack damage of the present invention determines that method has compared with prior art
Beneficial effect：
(1) this method carries out deflection testing using ripe lossless deflection testing equipment, fracture both sides certain limit,
The flexure curve accurate judgement crack coverage and its damage drawn according to distance and its deflection value of the test point apart from crack
Hinder state.
(2) it this method solve existing semi-rigid asphalt pavement crack damage state appearance observation and judge what is forbidden
Problem, science, accurate, economic foundation can be provided for the formulation of pavement maintenance ＆ rehabilitation scheme.
Brief description of the drawings
Fig. 1 is that deflection testing point arranges schematic diagram at crack；
Fig. 2 is the flexure curve that the slight crack road surface that the present invention chooses is drawn；
Fig. 3 is the flexure curve that the more serious crack road surface that the present invention chooses is drawn.
Embodiment
For the present invention is better described, technical scheme is readily appreciated, below to the present invention further specifically
It is bright.But following embodiments is only the simple case of the present invention, the scope of the present invention is not represented or limits,
Protection scope of the present invention is defined by claims.
The semi-rigid asphalt pavement crack damage state of the present invention determines method, comprises the following steps (with Anhui
Exemplified by the lossless deflection testing in highway semi-rigid asphalt pavement scene crack, choose crack at two and detected, at one
Slight crack, more serious crack at one)：
A) the lossless deflection testing of crack coverage
To semi-rigid type base asphalt pavement crack top surface, at each 15cm in crack both sides, at each 50cm in crack both sides, crack two
At each 100cm in side, at each 150cm in crack both sides, and lossless deflection testing is carried out at each 200cm in crack both sides, obtain each detection
The deflection value of point, as shown in Figure 1.
B) flexure Drawing of Curve
Using crack as origin, the horizontal vertical line in fracture length direction is abscissa, and each test point deflection value is ordinate
Flexure curve is drawn, as shown in accompanying drawing 2 and accompanying drawing 3.
C) flexure tracing analysis and crack damage state determine
The symmetry of the damage of crack both sides pavement structure is determined according to the linear symmetry of flexure curve, and according to deflection value
Variation tendency of the line along flaw level vertical line direction determines crack damage scope；According to maximum deflection value and the ratio of design deflection value
Compared with the degree of injury for determining crack；According to identified crack damage scope, the symmetry of crack both sides pavement structure damage, split
Stitch degree of injury synthesis and determine crack damage state.
From the flexure curve in accompanying drawing 2 and accompanying drawing 3；Flexure basicly stable, crack damage at each 1m in crack both sides
Scope is within each 1m in crack both sides；Crack damage scope flexure shown in accompanying drawing 2 is smaller, is only handled by the cementation of fissures and prevents moisture from entering
Enter to meet to require；Flexure curve shown in accompanying drawing 3 is symmetric form, and crack both sides faulted condition is suitable, and flexure at crack
It is larger, bearing capacity deficiency, it is necessary to could meet to require by milling processing, milling scope is in each 1m in crack both sides.
Specific embodiment specifically described herein is only preferred embodiment, it is noted that the ordinary skill of the art
Personnel, in the case where not departing from the concept thereof of the present invention, various modifications, doping, retouching or supplement can also be made or used
Similar mode substitutes, but without departing from design of the invention or surmounts scope as defined in the claims, should be regarded as this
The protection domain of invention.
Claims (2)
1. a kind of semi-rigid asphalt pavement crack damage state determines method, it is characterised in that：Comprise the following steps that：
1) to semi-rigid type base asphalt pavement crack top surface, at each 15cm in crack both sides, at each 50cm in crack both sides, crack both sides
At each 100cm, lossless deflection testing is carried out at each 150cm in crack both sides and at each 200cm in crack both sides, obtains each test point
Deflection value；
2) flexure curve is drawn by distance of the test point away from crack and its deflection value；
3) it is linear and maximum deflection value synthesis determines crack damage state according to flexure curve；
It is described linear and maximum deflection value synthesis determines that crack damage state comprises the following steps according to flexure curve：
A) symmetry of the damage of crack both sides pavement structure is determined according to the linear symmetry of flexure curve, and according to deflection value line
Crack damage scope is determined along the variation tendency in flaw level vertical line direction；
B) degree of injury in crack is determined according to the comparison of maximum deflection value and design deflection value；
C) crack damage scope, crack both sides pavement structure according to determined by step a) and step b) damage symmetry, split
Stitch degree of injury synthesis and determine crack damage state.
2. semi-rigid asphalt pavement crack damage state according to claim 1 determines method, it is characterised in that：Institute
Flexure curve is stated using crack as origin, the horizontal vertical line in fracture length direction is abscissa, and each test point deflection value is sat to be vertical
Mark and draw system.
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| CN201510267683.1A CN104915480B (en) | 2015-05-22 | 2015-05-22 | Semi-rigid asphalt pavement crack damage state determines method |
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| CN201510267683.1A CN104915480B (en) | 2015-05-22 | 2015-05-22 | Semi-rigid asphalt pavement crack damage state determines method |
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| CN104915480A CN104915480A (en) | 2015-09-16 |
| CN104915480B true CN104915480B (en) | 2018-02-13 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372089A (en) * | 2015-12-02 | 2016-03-02 | 上海浦江桥隧高速公路管理有限公司 | Method for detection of bridge hinge joint condition through FWD (Falling Weight Deflectometer) |
| CN105527165B (en) * | 2016-02-02 | 2018-07-24 | 山东省交通科学研究院 | A kind of asphalt pavement crack load response relative displacement test method and test device |
| CN108414371B (en) * | 2018-03-19 | 2020-07-17 | 昆山市建设工程质量检测中心 | Nondestructive testing method for asphalt pavement crack condition |
| CN110362930B (en) * | 2019-07-17 | 2023-04-18 | 上海市城市建设设计研究总院（集团）有限公司 | Asphalt pavement base damage judging method based on deflection basin parameters |
| CN112326421B (en) * | 2020-09-28 | 2023-03-14 | 山东省交通科学研究院 | Dynamic modulus test method for asphalt mixture |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115827A (en) * | 2013-02-18 | 2013-05-22 | 山东省交通科学研究所 | Method for testing repeated loading four-point stiffness modulus of asphalt mixture |
| CN104236761A (en) * | 2014-09-10 | 2014-12-24 | 同济大学 | Method for measuring force transmission coefficients based on concrete road flexure |
-
2015
- 2015-05-22 CN CN201510267683.1A patent/CN104915480B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103115827A (en) * | 2013-02-18 | 2013-05-22 | 山东省交通科学研究所 | Method for testing repeated loading four-point stiffness modulus of asphalt mixture |
| CN104236761A (en) * | 2014-09-10 | 2014-12-24 | 同济大学 | Method for measuring force transmission coefficients based on concrete road flexure |
Non-Patent Citations (2)
| Title |
|---|
| "旧路结构承载力评价";张慧斌;《山西交通科技》;20120430(第2期);正文第21-22页第1-2节，图2 * |
| "沥青路面弯沉与典型病害的灰色关联分析";胡建福;《公路交通科技（应用技术版）》;20080730(第7期);第56-58页 * |
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Inventor after: Wei Jincheng Inventor after: Ma Shijie Inventor after: Ran Jin Inventor after: Zhang Xinhua Inventor after: Sun Xiaonan Inventor after: Liu Jiarong Inventor after: Yu Sixin Inventor after: Su Jianming Inventor after: Sun Zhengfu Inventor after: Han Wenyang Inventor after: Wang Lin Inventor after: Yang Weigang Inventor after: Niu Jian Inventor before: Wei Jincheng Inventor before: Yu Sixin Inventor before: Han Wenyang Inventor before: Wang Lin Inventor before: Ma Shijie Inventor before: Sun Xiaonan |
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Effective date of registration: 20180115 Address after: No. 1877, Ji'nan City, Shandong, Shandong Applicant after: SHANDONG COMMUNICATIONS SCIENCE RESEARCH INSTITUTE Applicant after: Shandong Expressway Co., Ltd. Address before: Shadowless Hill Road Ji'nan city Shandong province 250031 No. 38 Applicant before: SHANDONG COMMUNICATIONS SCIENCE RESEARCH INSTITUTE |
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