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JSA - JIS B 8842

Cranes –– Principles for seismically resistant design

active, Most Current
Organization: JSA
Publication Date: 25 September 2020
Status: active
Page Count: 53
ICS Code (Cranes): 53.020.20
scope:

This Standard provides requirements regarding the seismic loads and combination of seismic loads for crane structures of all the crane types (excluding mobile cranes) specified in JIS B 0146 standard series or their structural members and machine elements (hereafter referred to as crane structural members).

This 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 Standard lays out the general concept of ULS, but 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.

NOTE The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 11031 : 2016 Cranes - Principles for seismically resistant design (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21-1.

Document History

JIS B 8842
September 25, 2020
Cranes –– Principles for seismically resistant design
This Standard provides requirements regarding the seismic loads and combination of seismic loads for crane structures of all the crane types (excluding mobile cranes) specified in JIS B 0146 standard...

References

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