|Table of Contents|

Influence of Performance Parameters on Damage Index of Concrete Columns(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2022年03期
Page:
146-153
Research Field:
Publishing date:

Info

Title:
Influence of Performance Parameters on Damage Index of Concrete Columns
Author(s):
FU Guo;  HE Bin;  WU Shou-jun
(College of Water Resource and Architectural Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China)
Keywords:
seismic performance;  concrete column;  ductility failure criterion;  double parameter failure criterion;  deformation capacity
PACS:
TU973.2
DOI:
10.19815/j.jace.2021.11071
Abstract:
The evaluation results of damage degree of concrete columns using different damage criteria are usually different. The existing seismic research mainly focuses on the corresponding relationship between the final failure index and the failure degree of members, whereas the influence of different failure criteria and the selection of member performance parameters on the rationality of the evaluation results is not considered. Taking the concrete column as the research object, the correlation coefficients between the ratio of displacement angle to the limit value of displacement angle, the ratio of bearing capacity to peak bearing capacity, and the ratio of deformation to deformation capacity and the failure index of double parameter criterion and ductility criterion were calculated. The coincidence degree of failure index with failure phenomenon and failure law was analyzed, and the applicability of several performance parameters to different failure criteria was discussed. The results show that the discreteness of deformation capacity value of concrete column in limit state is the smallest, and the correlation with displacement angle ratio and bearing capacity degradation value is the lowest, which is more suitable for the study of failure criterion. The value of combination coefficient β has a significant impact on the calculation results of double parameter failure criterion. There are great differences among the failure trend of concrete columns, the variation law of bearing capacity and test phenomena. The failure index calculated by the ductile failure criterion can reflect the influence law of displacement angle ratio, bearing capacity degradation value and deformation capacity value on failure. The ductility criterion considering the limit of deformation capacity can better quantify the failure of concrete columns.

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Last Update: 2022-05-30