Latest issuePractical Estimates of Site Response in Earthquakes for Seismic-Resistant Design (to the Discussion of SP 14.13330.2014 — the Renovated SNiP II-7-81* “Construction in Seismic Areas”)
Authors:
Dr. of Sci. (Phys. and Math.), Head of the Laboratory of Engineering Seismology and Interpretation of Seismic Observations No. 306, Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences. Moscow, Russian Federation
Olga V. Pavlenko
Rubric: Technical regulation and design standards development
Annotation:
Renovated Russian building codes SP 14.13330.2014 “Construction in seismic areas” in sections concerning seismic loadings and soil conditions are discussed.
The updated SP did not change much compared to the previous version SNiP II-7-81*, and the response spectra are simplified. The updated documents do not take into account new knowledge on the manifestations of seismicity, soil behavior during strong earthquakes, and spatial distribution of soils over the territory of Russia, they keep outdated provisions that have already shown their insolvency. The application of one seismic zonation map in the calculations for “project earthquake” and for “maximum credible earthquake” (PZ and MRZ) contradicts to the logic of probabilistic seismic zonation maps OSR-97.
To make the updated SP the documents of a modern scientific level, we should introduce significant changes in them, concerning soil classification, selection of “base” soil type, accounting for soil conditions, application of the method of seismic rigidities (VSZ), and the use of seismic zonation maps OSR-97 for the calculations on PZ and MRZ.