Modelling of structural deformation of staff quarters hospital Ranau subjected to the 2015 Ranau earthquake using Ruaumoko 2D

The 2015 Ranau Earthquake had triggered structural damages on many multi-storey school and residential buildings which were designed as soft-storey mechanism in the area of Ranau, Sabah. Soft-storey building mechanism is a type of reinforced concrete structure that commonly used in construction of multi-storey residential building. In Malaysia, most of the building was designed by referring to British Standard (BS8110) design code of practice where there is no consideration been made on earthquake loading. Thus, the main objective of this paper is to model the structural deformation of selected prototype soft-storey building which is Staff Quarters Hospital Ranau when subjected to the 2015 Ranau Earthquake with PGA=0.12g using Ruaumoko 2D. The modeling result showed that the damages occured at the ground floor beam-column joints, as the weakest points for soft-storey building mechanism. The post-earthquake on-site visual observation on the damages of Staff Quarters Hospital Ranau was also discussed in this paper