Finite Element Modelling of Shivsagar ‘Shiva Dol’
摘要
In this study, natural frequency of Shiva Dol which is the tallest Shiva temple tower (40 m) in India has been obtained. The dol has a massive dome on the top which is termed as Kosoloi and this part of the temple is made of pure gold. The structural stability and its seismic behaviour of the temple using Finite Element Based software have been done. The North-East India lies in the seismic zone ‘V’ which is the most vulnerable earthquake zone of India. This temple has been in existence for more than 280 years and has continued to stand without any reinforcement after being hit by Assam's most powerful earthquake “1897 Assam earthquake” and “1950 Assam—Tibet earthquake”. It was built using only traditionally available materials i.e. sticky rice, snail lime, stone lime, Mati maah (vigna mugno), hemp (a kind of plant fiber), molasses, duck eggs etc. without the use of any modern construction techniques, thus the temple's durability is quite high even under harsh climate. The Shiva Dol constructed during the Ahom dynasty (1744-1751AD) in Shivsagar district of Assam at 26°59′18″N and 94°37′59″E in the banks of the Sivasagar tank, India. This graceful temple of brick and stone masonry was built by Ambika Devi, one of the queens of Ahom King Siva Singha (1714–44 CE). The temple stands on the southern bank of sivasagar tank which is termed as Borpukhuri covering an area of 130 acres. It has fully developed axial plan comprising of garbhagriha, antarala and mandapa. After a detail topographic survey of the site, the plan and elevation of the temple was prepared using AUTOCAD®. A 3D model of Shiva Dol has also been prepared using SOLIDWORKS®. Numerical analysis of the temple using ABAQUS® has been carried out. The first fundamental frequency of the temple was found to be 23.845 cps which was quite high as compared to the frequencies of the past earthquakes.