DESIGN SPECIFICATIONS FOR HIGHWAY BRIDGES - IISEE
DESIGN SPECIFICATIONS FOR HIGHWAY BRIDGES - IISEE
DESIGN SPECIFICATIONS FOR HIGHWAY BRIDGES - IISEE
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Ground Surface<br />
Average Section<br />
Fig. 6.2.2 Seismic Hydrodynamic Pressure Acting on a Column Structure<br />
6.3 Verification of Seismic Performance Level 1 for Earthquake Ground<br />
Motion<br />
6.3.1 General<br />
In verifying Seismic Performance Level 1 the seismic coefficient method considering<br />
dynamic structural characteristics in elastic range shall be used according to the<br />
provisions specified in Section 6.3.4. In this process, the sectional force and<br />
deformation in each member shall be calculated, when subjected to the loads specified<br />
in Section 6.2 and the inertia force specified in Section 6.3.2.<br />
6.3.2 Calculation Method of Inertia Force<br />
Inertia force shall be defined as the lateral force equal to the product of the weight of a<br />
structure and the design horizontal seismic coefficient specified in Section 6.3.3, and be<br />
considered acting on the structure in the direction of the inertia force of a design<br />
vibration unit. However, in the case of a movable bearing support between the<br />
superstructure and the substructure, static frictional force of the bearing support shall<br />
be applied to the substructure, rather than the inertia force of the superstructure.<br />
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