Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6712947 | Construction and Building Materials | 2018 | 10 Pages |
Abstract
This paper conducts the experimental investigation into the whole working process of a large-curvature continuous steel box-girder bridge model to reveal its behavior characteristics and unseen failure mechanism, based on the structural stressing state theory. Firstly, the structural stressing state and corresponding characteristic parameters are expressed by the generalized strain energy density (GSED) derived from the experimental strain data. Then, the Mann-Kendall (M-K) criterion is introduced to distinguish the structural stressing state leaps of the bridge model, leading to the updated definition of the structural failure load and the revelation of structural progressive failure. Furthermore, this paper proposes stressing state submodes and evaluates their roles in the structural “failure”. Finally, the coordinative working performance of the divided sub parts is modeled through the ratios between the GSED sums of individual sub parts and the ensemble.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
Jun Shi, Weitao Li, Kaikai Zheng, Kangkang Yang, Guangchun Zhou,