CASH BENCHMARK ON THE BEYOND DESIGN SEISMIC CAPACITY OF REINFORCED CONCRETE SHEAR WALLS

摘要

CASH is an international benchmarking program organised under an initiative of the OEDC-NEA (Nuclear Energy Agency). The main objective of CASH is to evaluate the reliability of predictive analysis tools and methods as well as engineering practice know how to assess the seismic capacity of reinforced concrete shear walls to withstand strong earthquakes considered for beyond design situation. The CASH benchmark consists of two phases. During the first stage of the program, participants are invited to qualify and calibrate their numerical models and study methodology based on several experimental loading conditions (static pushover, static cyclic and dynamic). The experimental reference case is based on the "SAFE" reinforced concrete shear wall panels (EDF/COGEMA) tested at the European Laboratory for Structural Assessment (ELSA, Joint Research Centre). These tests were carried out on the main reaction wall using a pseudo-dynamic test program. This article presents the results expected from the participants. During the second stage, the participants would have to assess the capacity of a scale 1 shear wall extracted from an NPP building, predicting its response to various seismic loading intensities (pushover, cyclic and dynamic analyses) and provide estimates on the capacity of the RC wall.