Analysis and Economic Implications of Tall Pier Bridges under Seismic Condition

This paper describes a methodology for the analysis and design of Reinforced Concrete (RC) tall bridge piers having different Solid Circular cross sections, which are typically used in deep valley bridge viaducts. Piers are usually considered tall when the shaft has a height excess of 30 m. Cost comparison has been carried out of tall pier road bridges varying 30m to 100m in height and also varying grade of concrete from M40, M50, M60 and M70. From this study one can easily adopt which combination of concrete and steel is to be proven more economical among all the combinations for the particular height. Various analysis has been performed for the R.C.C. Road Bridges with help of STAAD.Pro software. Kutch-Bhuj earthquake (2001) time-history data is used for the analysis. The main objective of the study is to develop cost-generating data which aids the students/consultant engineer to take the appropriate decision regarding tall pier bridges.