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BS EN 1993-1-13:2024

BS EN 1993-1-13:2024

$198.66

Eurocode 3. Design of steel structures – Beams with large web openings

Published By Publication Date Number of Pages
BSI 2024 52
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1.1 Scope of EN 1993-1-13 1.1.1 General (1) This document gives supplementary provisions that extend the application of EN 1993-1-1 and EN 1993-1-5 to the design of rolled and welded steel sections with various shapes of web openings. The following cases are considered: – rolled or welded beams with single or widely spaced web openings; – rolled or welded beams with closely spaced web openings; – cellular beams with circular openings made by cutting and re-welding two parts of steel sections that may be different in dimensions; – beams with hexagonal and sinusoidal openings made by cutting and re-welding two parts of steel sections that may be different in dimensions. (2) This document applies to uniform members with I or H profiles, which are symmetric about the weak axis. It does not apply to non-prismatic or curved beams although the same principles can apply. (3) This document applies to steel beams with web openings that are subjected to sagging (positive) or to hogging (negative) bending moments. (4) This document covers the verification of the resistance at the openings and their effects on the global behaviour of the beam, including lateral torsional buckling. (5) Alternative methods are presented for beams with circular openings and with sinusoidal openings in which the forces and resistances are calculated by increments around or along the openings and which are suitable for computer methods. (6) This document applies to web slenderness, hw/tw, not exceeding 121Īµ. The local checks at and between adjacent openings apply to web slenderness up to this limit. The material parameter Īµ is defined in EN 1993-1-1:2022, 5.2.5 (2). NOTE The limit of 121Īµ is the limit of a Class 4 web for a steel section with equal flanges. It is used as a convenient limit for the application of this document, including mono-symmetric sections. (7) This document does not cover fatigue. In case of fatigue, EN 1993-1-9 applies. (8) This document does not cover fire design. For the design in case of fire, EN 1993-1-2 applies. (9) This document does not cover the buckling verification of members with web openings under axial force. 1.1.2 Shapes of web openings (1) The different shapes of web openings that are considered in this document are shown in Figure 1.1. Figure 1.1 – Different shapes of web openings in steel beams 1.1.3 Stiffened openings (1) This document also covers openings in the web of beams that are reinforced by longitudinal stiffeners and/or transverse stiffeners on one or both sides of the web, see Figure 1.2. NOTE The National Annex can give rules for alternative types of stiffener. Figure 1.2 – Stiffening of openings in beam webs 1.2 Assumptions (1) Unless specifically stated, EN 1990, the EN 1991 series and EN 1993-1-1 apply. (2) The design methods given in EN 1993-1-13 are applicable if: – the execution quality is as specified in EN 1090-2, and – the construction materials and products used are as specified in the relevant parts of the EN 1993 series, or in the relevant material and product specifications.

PDF Catalog

PDF Pages PDF Title
2 undefined
12 1 Scope
14 2 Normative references
15 3 Terms, definitions and symbols
3.1 Terms and definitions
16 3.2 List of symbols
21 4 Basis of design
4.1 General
4.2 Verifications
22 4.3 Methods of design for Vierendeel bending
4.3.1 Equivalent rectangular opening method
4.3.2 Alternative methods
4.4 Tolerances and manufacture
5 Materials
5.1 General
5.2 Welding
23 6 Durability
7 Structural Analysis
7.1 Methods of analysis
7.2 Member stiffness for global structural analysis
25 7.3 Serviceability
7.4 Classification for global bending.
7.5 Section classification of Tees subject to Vierendeel bending
26 7.6 Section classification of longitudinal stiffeners
8 Ultimate Limit States
8.1 General Requirements for all openings
8.1.1 General
27 8.1.2 Geometric limits for unstiffened web openings
8.1.3 Geometric limits for web openings with stiffeners
28 8.2 Shear resistance at web opening positions
29 8.3 Bending resistance of a beam with web openings
8.3.1 General
8.3.2 Buckling resistance of the compressed Tee for long openings
30 8.4 Resistance of the Tee sections in Vierendeel bending
32 8.5 Web buckling next to widely spaced openings
8.5.1 General
33 8.5.2 Web buckling
34 8.6 Rules for closely spaced openings
8.6.1 General
8.6.2 Web-post bending
36 8.6.3 Web-post buckling
37 8.6.4 Web-post shear
38 8.7 Longitudinally stiffened openings
8.7.1 Scope of the rules for openings with longitudinal stiffeners
8.7.2 Additional verifications for stiffened openings
8.7.3 Global bending resistance for stiffened openings
39 8.7.4 Vierendeel bending resistance for stiffened openings
8.7.5 Web buckling for widely spaced stiffened openings
8.7.6 Web-post buckling for closely spaced stiffened openings
40 8.7.7 Openings with transverse stiffeners
8.8 Additional requirements for other cases
8.8.1 End-posts
42 8.8.2 Loads applied over or close to the openings
43 8.9 Alternative method for Vierendeel bending for circular openings
44 8.10 Alternative method for stability of web-post between circular openings
47 8.11 Alternative method for sinusoidal openings
8.11.1 General
8.11.2 Vierendeel bending
48 8.12 Lateral torsional buckling
49 9 Serviceability limit states

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BS EN 1993-1-13:2024
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