摘要: |
The paper deals with complexities of structural analysis which are encountered in continuous bridges. It elaborates the definition of continuous beam with respect to uplift force, detection and neutralization of uplift force, the force which is detrimental to performance of continuous bridges. It also describes invisible forces exerted in continuous bridges with details of their Fixed End Moments needed for analysis of continuous beam under effect of the invisible forces by Finite Element Methods. It also provides two new strategies to reduce weight of steel bridges, which can be adopted to bridge the gap, ranging from 60 m to 200 m. Some important general recommendations have been made which are useful during execution of bridge projects in the field. |