We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
CRTS Ⅱ型轨道板/CA 砂浆界面内聚力模型研究.
- Authors
王 军; 卢朝辉; 张玄一; 赵衍刚
- Abstract
Debonding between track slab and CA mortar layer is one of the main defects of CRTS Ⅱ slab-type ballastless track system. In order to describe the constitutive behavior of the interface and reveal the mechanism of debonding, an improved exponential cohesive zone model was proposed with parameters determined based on theoretical analysis and experimental data. The proposed model is a segmentation function and adopts exponential coefficients to reflect the nonlinearity of the tension-displacement relationship of the interlayer interface. It is found that: The proposed model can efficiently calculate the interface cohesive strength, the interface relative displacement at damage initiation, and the interface critical fracture energy between track slab and CA mortar, and the results are basically consistent with the experimental results. The proposed model can simulate the normal and tangential cracking behavior of the interface between track slab and CA mortar layer with relatively high accuracy.
- Publication
Engineering Mechanics / Gongcheng Lixue, 2022, Vol 39, Issue 9, p72
- ISSN
1000-4750
- Publication type
Article
- DOI
10.6052/j.issn.1000-4750.2021.05.0336