Analysis of Box Girder Bridge with different Instrumentation Techniques

Whenever structure is built, it is always aimed that it should withstand for minimum of 100 years or more than that. But due to some environmental, seismic or dynamic effects, the structure gets deteriorated soon which leads to the catastrophic failure of structure. There are many methods developed so far to detect the structural damage, such as visual inspection, non-destructive methods, such as rebound hammer, acoustic emission etc. but now more efficient and easy methods are developed which also are a type of non- destructive inspection which includes the use instrumentation the whole process is called Structural Health Monitoring(SHM). Instrumentation involves many sensors and other equipment’s which are installed in the bridges and other structures at the time of construction only. In present study LokNayakSetu Bridge located in New Delhi has been considered for identification, estimation of present structural capacity and remaining life was performed at each stage. The bridge was extensive instrumented in 1997, which helps in continuous monitoring of the bridge.