Architecture Engineering and Science

A single-storey elevated cold store adopts a concrete single-span double-slope rigid-jointed row frame structural system, which is characterised by high eaves and large spans, and requires high seismic performance. This paper takes this single-storey elevated cold storage as an example, and applies the vibration mode decomposition reaction spectrum method (CQC) to analyse the displacement response of the structure under multiple-occurrence earthquakes and rare-occurrence earthquakes, so as to derive the displacement control effect of the structure under different working conditions. Pushover analysis (pushover) of this rack structure is carried out using static elasto-plastic analysis (PUSHOVER) to assess the performance points of the structure under seismic actions. The results show that the displacement of this rack structure is well controlled under seismic action, which meets the code requirements and maintains a high shear capacity under rare earthquakes. In addition, the static elastic-plastic analyses (pushover) show that the performance points of the structure under multiple-occurrence, fortified, and rare-occurrence earthquakes are as expected, verifying that the seismic design of the structure is reasonable.