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CJJ 36-2016: Technical code of maintenance for urban road
CJJ 36-2016
GJJ
INDUSTRY STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
P CJJ 36-2016
Filing No.: J 528-2016
Technical code of maintenance for urban road
ISSUED ON: NOVEMBER 15, 2016
IMPLEMENTED ON: MAY 01, 2017
Issued by: Ministry of Housing and Urban-Rural Development of PRC.
Table of Contents
Foreword ... 7
1 General ... 9
2 Terms and symbols ... 9
2.1 Terms ... 9
2.2 Symbols ... 10
3 Basic requirements ... 11
4 Roadway condition inspection, assessment and maintenance strategy ... 12
4.1 General requirements ... 12
4.2 Periodic inspection ... 13
4.3 Periodic inspection ... 14
4.4 Special inspection ... 16
4.5 Condition assessment ... 17
4.6 Maintenance strategy ... 25
5 Asphalt pavement ... 26
5.1 General requirements ... 26
5.2 Preventive maintenance ... 26
5.3 Pavement distress repairs ... 29
5.4 Pavement rehabilitation ... 32
6 Concrete pavement ... 33
6.1 General requirements ... 33
6.2 Joint maintenance ... 33
6.3 Pavement distress repairs ... 34
6.4 Rehabilitation and pavement improvement ... 37
7 Other pavements ... 38
7.1 Gravel roadway ... 38
7.2 Prefabricated Portland cement concrete roadway ... 39
8 Pedestrian walkway ... 40
8.1 General requirements ... 40
8.2 Base course ... 41
8.3 Subbase ... 41
8.4 Curb ... 43
8.5 Tree pits ... 44
8.6 Walkway steps ... 44
9 Roadbed ... 44
9.1 General requirements ... 44
9.2 Roadbed ... 45
9.3 Shoulders... 45
9.4 Side slopes ... 46
9.5 Retaining walls ... 47
10 Roadway facility ... 48
10.1 Noise barrier ... 48
10.2 Roadway signs ... 48
10.3 Median strips, guard rails and barriers ... 49
10.4 Culvert ... 49
10.5 Edge drains, drain outlets and swales ... 50
10.6 Inspection manholes and stormwater inlets ... 51
11 Excavation, repair ... 52
11.1 General requirements ... 52
11.2 Backfill ... 54
11.3 Base course repair ... 55
11.4 Pavement repair ... 56
11.5 Pedestrian walkway repair ... 56
12 Inspection and acceptance of roadway maintenance projects ... 57
12.1 General requirements ... 57
12.2 Asphalt pavement maintenance projects ... 58
12.3 Concrete pavement maintenance projects ... 61
12.4 Other pavement maintenance projects ... 62
12.5 Pedestrian walkway maintenance projects ... 63
12.6 Roadway facility maintenance projects ... 65
13 Assessment of roadway maintenance condition ... 67
13.1 General requirements ... 67
13.2 Distress and defects identification ... 68
13.3 Maintenance condition assessment approach ... 72
13.4 Maintenance condition assessment criteria ... 73
13.5 Maintenance assessment process ... 75
13.6 Maintenance records and data management ... 77
14 Roadway maintenance project safety ... 78
14.1 General requirements ... 78
14.2 Work zone traffic control ... 78
14.3 Roadway maintenance work zone mobility requirements ... 79
15 Document management ... 80
15.1 General requirements ... 80
15.2 Roadway conditions assessment data ... 80
15.3 Roadway maintenance data ... 81
15.4 Data management ... 81
15.5 Roadway information system management ... 82
Appendix A Facility damage report form ... 83
Appendix B Roadway information card ... 84
Appendix C Types of asphalt, concrete and pedestrian pavement defects ... 91
Appendix D Asphalt, concrete and pedestrian pavement defects deduct values table 94
Appendix E Asphalt, concrete and pedestrian pavement defects inspection checklist 97
Appendix F Roadway maintenance condition inspection record ... 99
Explanation of wording in this code ... 102
List of quoted standards ... 103
Technical code of maintenance for urban road
1 General
1.0.1 This Code is formulated, in order to maintain the functions of urban road facilities,
ensure their intactness and safe operation, improve service levels, unify technical
standards, standardize maintenance work.
1.0.2 This Code applies to the maintenance of urban roads (including roadways,
pedestrian walkways, parking lots, squares, roadway facility), which are delivered for
use after completion acceptance.
1.0.3 Bridge maintenance on urban roads shall comply with the current industry
standard "Technical code of maintenance for city bridge" CJJ 99.
1.0.4 In addition to complying with this Code, the maintenance of urban roads shall
also comply with the relevant current national standards.
2 Terms and symbols
2.1 Terms
2.1.1 Pavement condition index (PCI)
An index, which characterizes the intactness condition of the pavement.
2.1.2 Riding quality index (RQI)
An index, which characterizes the driving comfort of the pavement.
2.1.3 Pavement quality index (PQI)
A comprehensive index, which characterizes the pavement intactness and driving
comfort.
2.1.4 Pedestrian walkway condition index (FCI)
An index, which characterizes the intactness of the pedestrian walkway.
2.1.5 Pavement preventive maintenance
Maintenance measures, which are taken to restore the service function of the pavement,
when the road structural strength is sufficient and only the surface function is degraded.
2.1.6 Corrective maintenance
The corresponding functional or structural restoration measures, which are taken, when
the road facilities have clear pavement distress or have partially lost their service
functions,.
2.1.7 Emergency maintenance
Maintenance measures, which are taken in emergency situations.
2.1.8 Minor rehabilitation
Routine maintenance, which is performed to keep road functions and facilities intact.
2.1.9 Medium-sized rehabilitation
Regular maintenance works, which are carried out for general wear and tear and local
damage.
2.1.10 Major rehabilitation
Comprehensive repair and reinforcement of major road damage to restore it to original
design standards OR partial improvements to improve road traffic capacity. The
quantity of the project is greater than 8000 m2 or the project including foundation work
is greater than 5000 m2.
2.1.11 Modification and extension project
Projects of improving technical level and traffic capacity, because roads and their
facilities are not adapted to traffic volume and load requirements.
2.2 Symbols
2.2.1 Assessment indexes and symbols for urban road maintenance status:
CL - Roadway intactness rate;
F1 - Total roadway area of inspection unit;
F1i - Actual area of various types of damage to the roadway of inspection unit;
F2 - Total pedestrian walkway area of the inspection unit;
F2i - Actual area of various types of damage to the pedestrian walkway of inspection
unit;
3.0.6 Urban road maintenance projects shall be divided into preventive maintenance,
corrective maintenance, emergency maintenance, according to their work nature and
technical status. Corrective maintenance includes minor rehabilitation, medium-sized
rehabilitation, major rehabilitation, modification and extension projects. For the
medium-sized rehabilitation, major rehabilitation, modification and extension projects,
special design shall be carried out.
3.0.7 The barrier-free facilities in the pedestrian walkway modification and extension
project shall comply with the relevant requirements of the current national standard
"Barrier-free Design Code" GB 50763.
3.0.8 The maintenance work of urban expressways should adopt mechanized
construction technology.
3.0.9 For urban road maintenance, it shall formulate emergency plans for special
weather, emergencies, ...