A Comparative Study on Seismic Analysis of National Building Code of Nepal, India, Bangladesh and China

The use of modern technologies in Civil Engineering is increasing in recent years. Due to the different aesthetic needs of people, the building of different shapes and sizes is in practice. Such building structure is more susceptible to seismic force. Numerous methods have been followed to reduce the severe effects. The shape of a building is one such method which changes the structural behavior. The objective of this research is to compare seismic properties of the seismic region of Nepal using Nepal, India, Bangladesh and China building codes provision for the same building structure with variations in the shape of a structure. Four different shapes of buildings are considered in the study and a comparison is made between different shapes of buildings against the effect of lateral loads due to the earthquake. Computer-Aided Design (CAD) is carried out to perform the relative comparison between different country building codes provision and focus on the effect due to building shape variation. In this study, countries along the Himalayan arc are chosen for a review of different seismic codes. A model RC building of four different shapes located in Nepal is analyzed by using Nepal Buildings Code (NBC 105, 1994), Indian Code (IS 1893-1, 2016), Bangladesh Code (BNBC 1993: 2014), and China Code (GB 50011: 2010). The responses of the building under the parameters like Response Spectrum Curve, base shear, time period, and absolute displacement are compared for all four codes. Based on the design base shear, China code showed a higher value compared with other codes because the design horizontal seismic force coefficient, base shear, and absolute displacement of China code are maximum than other codes. On varying the shape of a structure for base shear estimation, a similar pattern is observed. Hence, it can be concluded that shape has a negligible effect on the base shear of the structure.