BS ISO 11031:2016:2018 Edition
$189.07
Cranes. Principles for seismically resistant design
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 50 |
This International Standard establishes general methods for calculating seismic loads to be used as defined in the ISO 8686 series and for proof of competence as defined in ISO 20332 , for the structure and mechanical components of cranes as defined in ISO 4306 .
This International Standard evaluates dynamic response behaviour of a crane subjected to seismic excitation as a function of the dynamic characteristics of the crane and of its supporting structure.
The evaluation takes into account dynamic effects both of regional seismic conditions and of the local conditions on the surface of the ground at the crane location.
The operational conditions of the crane and the risks resulting from seismic damage to the crane are also taken into account.
This International Standard is restricted to the serviceability limit state (SLS), maintaining stresses within the elastic range in accordance with ISO 20332 .
The present edition does not extend to proofs of competence which include plastic deformations. When these are permitted by agreement between crane supplier and customer, other standards or relevant literature taking them into account can be used.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 6 | Foreword |
| 7 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Symbols |
| 10 | 4 Seismic design methods |
| 11 | 5 Seismic design by Modified Seismic Coefficient Method 5.1 General 5.2 Calculation of horizontal seismic design coefficient, K H 5.2.1 General 5.2.2 Determination of normalized basic acceleration, A bg |
| 12 | 5.2.3 Determination of subsoil amplification factor, β 2 |
| 13 | 5.2.4 Determination of acceleration response factor, β 3 |
| 16 | 5.3 Calculation of vertical seismic design coefficient, K V 5.4 Calculation of seismic design loads 5.4.1 Calculation of seismic accelerations |
| 17 | 5.4.2 Calculation of seismic forces 6 Seismic design based on Maximum Response Spectrum Method 6.1 General |
| 18 | 6.2 Calculation procedure for total seismic response (TSR) |
| 19 | 7 Combinations of seismic and non-seismic effects 7.1 General 7.2 Proof of static strength: load combinations in accordance with ISO 8686-1 |
| 20 | 7.3 Proof of static strength: load combination according to SRSS Method 7.4 Proof of global stability |
| 21 | 7.5 Proof of competence for crane structures |
| 22 | Annex A (informative) Flow chart of seismic design |
| 23 | Annex B (informative) Design accelerations and seismic zones |
| 40 | Annex C (informative) Information about Maximum Response Method |
| 43 | Annex D (informative) Time History Response Method and a comparison of different seismic methods available |
| 46 | Annex E (informative) Relation between basic acceleration, Mercalli and Richter scales |
| 47 | Annex F (informative) Vertical seismic intensity |
| 48 | Bibliography |
