Study of Steel Bridge and Design of its Prototype

Abstract

The “Study of Steel Bridge and design of its prototype” is based on reviewing existing literatures, project reports and researches in steel bridge structures. The study depends upon the different aspects in design considerations of a steel bridge where its main focus is to understand the scaling law and design of a prototype of a steel bridge structure. The study includes a) Classification of bridges which helps in categorizing the bridges on basis of their structures b) Types of steels used in bridges and their strength which helps to understand the importance of types of steel, its strength and when to use it. c) Tests conducted on bridges which help in determining safety, durability and loading capacity of bridge. d) Loads on bridges to understand type of loadings a bridge has to sustain. f) To reduce the cost of experimentation a technique is used its main objective is to conduct experiments on structures at reduced scales which is known as Scaling prototype. Cost is cheap due to the dropping in the loading equipment and dropping in the cost of test structure fabrication and testing. The researchers must be watchful and pure on how far the model behaves similar to the prototype By properly applying scaling laws, it is possible to infer the behaviour of a structure from the response of a similar model whose dimensions are scaled by a factor b. In some cases, however, e.g. in case of the strain rate sensitive of structures under serves the dynamic loads, these laws become inaccurate, rigorously limits this approach. It is exposed that the behaviour of a structure, if made of mild steel, can be predicted from the response of a model. The technique used here is publicised to be valid for simple structues subjected to the transverse and axial impact loads.