1.0.1 In order to make the strengthening of steel structures reliable in technology, economic and applicable, simple and convenient in construction as well as qualified, this code is formulated.
1.0.2 This code is applicable to the design, construction and acceptance for strengthening steel structures of industrial and civil buildings as well as general structures due to improper design, construction and use, material quality nonconforming to the requirements, changes in functions of use, suffering from disaster and damage, as well as durability deficiency and other reasons. As for strengthening steel structures with special requirements and in particular cases, it still shall meet the requirements of corresponding professional technique standards.
1.0.3 Before strengthening steel structures, reliability evaluation shall be carried out according to "Standard for reliability evaluation of industrial factory buildings" and "Standard for reliability evaluation of civil buildings" etc.
1.0.4 The design, construction and acceptance of strengthening steel buildings, except the requirements in this code, still shall meet the requirements in "Code for Design of Steel Structures " and "Code for Construction and Acceptance of Steel Structure Engineering".
Foreword I
1 General Provisions
2 Terms, Symbols and Code Numbers
2.1 Terms
2.2 Symbols and Code numbers
3 Basic Principles and General Method for Strengthening
3.1 General Requirements
3.2 Strengthening Procedures
3.3 General Method of Strengthening and Its Selection
3.4 Materials
4 Strengthening of Changing Calculation Graph of Structures
4.1 General Requirements
4.2 General Method for Changing Calculation Graph of Structures
5 Strengthening by Increasing Member Section
5.1 General Requirement
5.2 Strengthening Bending Members
5.3 Strengthening Axially-Loaded Members, Tension-Bending Members and Compression-Bending Members
5.4 Structure and Construction Requirements
6 Connection Strengthening and Strengthening Piece Connection
6.1 General Requirements
6.2 Strengthening Weld Connection
6.3 Strengthening Bolt and Rivet Connection
6.4 Strengthening Piece Connection
6.5 Structure and Construction Requirements
7 Crack Repair and Strengthening
7.1 General Requirements
7.2 Crack Repair Method
8 Construction Safety and Engineering Acceptance
8.1 Construction Safety
8.2 Engineering Acceptance
Appendix A Member Section Strengthening Form (Reference Diagram)
Appendix B Explanation of Wording in This Code
Additional Explanation:
