Open AccessApplied Research on Hinged Joint Damage Evaluation of Hollow Slab Bridge Based on Acceleration Amplitude Ratio
Author(s) -
Qiu Shen,
Aihong Kang,
Peng Xiao,
Wan Li Gu,
Dunjian Jin,
Xin Chen
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/768/3/032005
Subject(s) - hinge , structural engineering , slab , joint (building) , acceleration , span (engineering) , displacement (psychology) , bridge (graph theory) , beam (structure) , engineering , physics , medicine , psychology , classical mechanics , psychotherapist
With the increase of the operating life of domestic hollow slab bridges, a large number of in-service hollow slab bridges have different degrees of joint damage. In order to conduct a qualitative and quantitative evaluation of the different degrees of bridge joint damage, this article relies on the actual engineering background and studies different The dynamic response of a bridge with a hinge joint under the load of a car was determined. The joint failure location of the joint under simulated conditions was the beam end and the mid-span, and the damage levels were 25%, 50%, and 75%, respectively. Compared with relative displacement and relative opening and closing, the hinge joint disease has a greater influence on the acceleration of the beam plate on both sides of the hinge joint, and the acceleration response is the most sensitive. Therefore, this paper proposes a method to evaluate the degree of joint damage based on the acceleration amplitude ratio of the beams on both sides of the joint, which provides a new idea for the actual project to evaluate the degree of damage to the joint hinge.