1.0.1 The Specifications is formulated to make the highway bridges and culverts safe, endurable, applicable, environmental-friendly, economical and aesthetic in the design.
1.0.2 The Specifications applies to design of new and renovated highway bridges and culverts of all classes.
1.0.3 Design reference period of highway bridges and culverts structure is 100 years.
1.0.4 Design service life of major structure and replaceable parts shall not be less than the values in Table 1.0.4.
Table 1.0.4 Design Service Life of Bridges and Culverts (year)
Class of highway Major structure Replaceable parts
Extra-large bridge large bridge Medium bridge Small bridge and culverts Stay cable
Sling
Tie bar Handrail expansion device
support
Expressway
Class I highway 100 100 50 20 15
Grade II highway
Class III highway 100 50 30
Class IV highway 100 50 30
1.0.5 See Table 1.0.5 for classification of extra-large, large, medium and small bridges and culverts based on the single-hole span or total length of multi-hole span.
Table 1.0.5 Classification of Bridges and Culverts
Classification of bridges and culverts Total length of multi-hole span L(m) Single-hole span LK (m)
Extra-large bridge L>1 000 LK>150
Large bridge 100≤L≤1 000 40≤LK≤150
Medium bridge 30
Foreword I
1 General Provisions
2 Terms and Symbols
2.1 Terms
2.2 Symbols
3 Design Requirements
3.1 General
3.2 Bridges and Culverts Layout
3.3 Bridges and Culverts Hole Size
3.4 Headroom of Bridges and Culverts
3.5 Bridge Line Alignment and Approach
3.6. Basic Construction Requirements
3.7 Bridge Deck Pavement, Waterproofing and Drainage
3.8 Maintenance and Other Auxiliary Facilities
4 Action
4.1 Action Classification, Representative Value and Combination of Actions
4.2 Permanent Action
4.3 Variable Action
4.4 Accidental Action
4.5 Earthquake Action
Appendix A Nationwide Climatic Region
Explanation of Wording in The Specifications
