Evaluation of bearing capacity of large-span concrete arch bridges based on dynamic and static load tests

Abstract

As an indispensable structure in our daily transportation, bridges have continued to decline as time goes by. This paper takes a large-span concrete arch bridge as an example, and uses Midas to establish a finite element theory analysis and calculation model. Through dynamic and static load tests, we obtain dynamic characteristics such as the structural strain and deflection changes of the bridge structure under the static load test, the structure's self-vibration frequency and impact coefficient under the dynamic load test, so as to determine whether the actual load carrying capacity of the bridge meets the normal use requirements, ensure the safety of the structure, and establish a bridge "fingerprint" file.