1 General provisions
1.0.1 This Specification is formulated with a view to implementing the technical and economic policies of the nation during the design and construction of stainless steel structures, and thus achieving safety and applicability, advanced technology, economic rationality, and guaranteed quality.
1.0.2 This Specification is applicable to the design and construction of stainless steel structures in industrial and civil buildings and structures. This Specification is not applicable to load-bearing structures and components that need fatigue analysis under direct dynamic load.
1.0.3 This Specification is formulated according to the current national standards GB 50153 Unified standard for reliability design of engineering structures and GB 50068 Unified standard for reliability design of building structures.
1.0.4 In the design of stainless steel structures, the materials, structure scheme and construction measures shall be selected reasonably to ensure the structures meet the requirements of strength, stability and stiffness during transportation, installation and use process, and meet the corrosion prevention, fire prevention, maintenance and other requirements.
1.0.5 In addition to this Specification, the design and construction of stainless steel structures shall also comply with the current relevant standards of the nation.
2 Terms and symbols
2.1 Terms
2.1.1 stainless steel
steel with stainless and corrosion resistance as the main characteristics, and with a chromium content of at least 10.5% and a carbon content of not more than 1.2%
2.1.2 austenitic stainless steel
non-magnetic stainless steel with matrix primarily of austenite structure (γ-phase) of face-centered cubic crystal structure, and is mainly strengthened by cold working and may lead to a certain magnetism
2.1.3 ferritic stainless steel
magnetic stainless steel with matrix primarily of ferritic structure (α-phase) of body-centered cubic crystal structure, and generally cannot be hardened by heat treatment but may be slightly strengthened by cold working
2.1.4 duplex (austenitic-ferritic) stainless steel
magnetic stainless steel with matrix of austenitic and ferritic structure (where the content of the lesser phase is generally greater than 15%) and may be strengthened by cold working
2.1.5 proof strength
corresponding stress when the residual strain of the material is 0.2%
2.1.6 strain hardening coefficient
coefficient reflecting the increase in strength of stainless steel materials when plastic strain occurs
2.1.7 tangent modulus of elasticity
slope of a stress point on a material stress-strain curve
2.1.8 element
the flat part between the two adjacent longitudinal edges of the member
2.1.9 stiffened element
element with both longitudinal edges connected to other elements
2.1.10 partially stiffened element
element with one longitudinal edge connected to other elements and the other longitudinal edge stiffened by a conforming element with roll rim
2.1.11 un-stiffened element
element with one longitudinal edge connected to other elements and the other longitudinal edge is free
2.1.12 uniformly compressed element
element bearing in-plane uniformly distributed compressive stress
2.1.13 non-uniformly compressed element
element bearing in-plane non-uniformly distributed compressive stress
2.1.14 width-to-thickness ratio
the ratio of the width to the thickness of the flat area of the element
2.1.15 diameter-to-thickness ratio
the ratio of the diameter to the thickness of a circular tube
2.1.16 effective width-to-thickness ratio
the ratio of calculated width to the thickness in considering the post-buckling strength of compressed steel plate and the reduced element width in simplified calculation
2.1.17 cold working
processing methods of punching shear, bending and stretching materials at room temperature
2.1.18 effect of cold working
material performance change due to material processing at room temperature
2.1.19 resistance spot welding
resistance welding method of assembling workpieces to overlap joints compressed between two electrodes and using resistance heat to form solder joints
2.1.20 blind rivet
rivets for one-sided riveting When riveting, the rivet mandrel is pulled by a special hitter, which expands the rivet body to rivet
Foreword ii
1 General provisions
2 Terms and symbols
2.1 Terms
2.2 Symbols
3 Materials
3.1 Stainless steel for structures
3.2 Connecting materials
3.3 Design indexes
4 Basic requirements of design
4.1 Design principles
4.2 Action and action effects
4.3 General requirements of configuration
4.4 Requirements for structural deformation
6.2 Calculation of fastener connection
6.3 Connection structure
7 Protection
7.1 Maintenance
7.2 Fire resistance and heat insulation
8 Production and installation
8.1 General requirements
8.2 Processing
8.3 Welding and fastening connections
8.4 Storage, transportation and installation
Annex A Overall critical flexural-torsional buckling moment of beams
Annex B Steel sectional properties
Annex C Calculation of bimoment B of simply supported beam
Explanation of wording in this specification
List of quoted standards
