1.0.1 This Specification was formulated for the purpose of achieving advanced technology, economic rationality and safe operation and also guaranteeing quality in the prestressed construction of building engineering.
1.0.2 This Specification is applicable to the prestressed construction of concrete structures and steel structures in buildings and general structures.
1.0.3 The construction of subitem prestressing project shall be undertook by the prestressing professional construction organization having the corresponding qualification grade.
1.0.4 In addition to meeting this Specification, the prestressed construction of building engineering still shall comply with those specified in the current relevant standards of the nation.
1 General Provisions
2 Terms
3 Materials
3.1 Prestressing Tendon
3.2 Prestressing Tendon of Coating
3.3 Anchorage, Grip and Coupler
3.4 Tubes for Hole Manufacturing
3.5 Cement for Grouting
3.6 Shipping and Storage
4 Construction Requirement
4.1 Pre-tensioned Prestressing
4.2 Post-tensioned Bonded Prestressing
4.3 Post-tensioned Unbounded Prestressing
4.4 Measures for Reinforced Structures
4.5 Measures for Reducing Binding Force
4.6 Prestressing of Steel Structure
5 Construction Calculation
5.1 Blanking Length of Prestressing Tendon
5.2 Stretching Force of Prestressing Tendon
5.3 Prestressing Loss
5.4 Partial Load-carrying Capacity of Anchorage Zone
5.5 Stretch Elongation of Prestressing Tendon
6 Fabrication and Installation
6.1 Fabrication of Prestressing Tendon
6.2 Pore Path Setting up of Prestressing Tendon
6.3 Installation of Prestressing Tendon
6.4 Laying of Unbonded Prestressing Tendon
6.5 Quality Requirements
7 Stretching and Spreading
7.1 Preparation Work
7.2 Stretching of Prestressing Tendon
7.3 Spreading of Prestressing Tendon
7.4 Quality Requirements
8 Grouting and Sealing Anchor
8.1 Preparation Work
8.2 Slurrying Requirements
8.3 Grouting Technology
8.4 Vacuum Auxiliary Grouting
8.5 Sealing Protection of Anchorage
8.6 Quality Requirements
9 Construction of External Pre-stressing
9.1 Arrangement of Tendons
9.2 System Constitution
9.3 Construction Requirements
9.4 Construction and Protection
10 Prestressing Construction of Cable
10.1 System Construction
10.2 Fabrication and Installation
10.3 Adjustment of Stretching Force and Cable Tension
10.4 Protection Requirements
10.5 Maintenance and Monitoring
11 Construction Management
11.1 Construction Scheme
11.2 Requirements for Cooperation Procedures
11.3 Safety Measures
11.4 Quality Control
11.5 Quality Acceptance
Appendix A Specification and Mechanical Properties of Common Prestressing Tendon
Appendix B Specification of Metal Bellows and Plastic Bellows
Appendix C Anchoring System of Clips for Common Steel Stranded Wire
Appendix D Coordinate Equation and Length Calculation of Curved Prestressing Tendon
Appendix E Methods for Fluidity Test of Cement Paste for Grouting
Appendix F Quality Inspection Records of Inspection Lot of Subitem Prestressing Project
Explanation of Wording in this Specification
