Keywords: reinforced concrete shell, vibration measurements, earthquake response, elasto-plastic analysis, shrinkage and creep, thermal stress, ultimate strength.

In Japan, it has been recognized after the Hanshin-Awaji Earthquake disaster in 1995 that such a large-scale earthquake may arise in many regions. On the other hand, in recent years, some free-curved surfaces have been used as actual reinforced concrete shell roofs by employing numerical form-finding processes. It is important to evaluate the structural performance including the dynamic effects with the combined nonlinear behaviour of these structures.

In this paper, some results of the evaluation of vibration characteristics using vibration measurements and analyses for the purpose of earthquake performance evaluation of the newly constructed RC shell are shown.

When the shell is shallow, the trial estimation of the load carrying capacity may be carried out at the time of assuming the effects of thermal stress, shrinkage and creep of the concrete. It is shown that these may become remarkable for shallow RC arches or shells.

In this paper, some results for the estimation of the deformation characteristics using measurements and analyses for a newly constructed shallow reinforced concrete shell are shown. In addition, the evaluation of thermal, shrinkage and creep effects on ultimate strength are presented as an example.

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