Limit states for the damage assessment of bridges supported on LRB bearings

11th International Conference on Damage Assessment of Structures

物理学;材料科学

Jara, M.^1 ; Gómez, C.^1 ; Jara, J.M.^1 ; Olmos, B.A.^1

Dept. of Civil Engineering, University of Michoacan, CP 58030, Morelia, Mexico^1

关键词: Damage assessments;    Isolation devices;    Performance based design;    Performance limits;    Reinforced concrete pier;    Shear displacement;    Strong earthquakes;    Structural damages;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/628/1/012046/pdf
DOI  :  10.1088/1742-6596/628/1/012046

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

There is now a common awareness that excessive strength is neither essential nor a synonymous of good performance in strong earthquakes. It is widely recognized that the design process should put more emphasis on predicting structural damage, according to the performance -based design philosophy. This paper presents an approach for assessing the damage level of lead rubber isolation devices and reinforced concrete piers, according to the performance-based design framework. The proposed performance limit states are based on the control of the materials strain, by means of the shear displacement of the bearing and the hinge rotation of the pier. The performance of the piers of different types of bridges is evaluated with the proposed methodology considering four different limit states.