期刊
ENGINEERING STRUCTURES
卷 180, 期 -, 页码 400-418出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.engstruct.2018.11.054
关键词
Bridge substructure; Non-contact splices; Interface between column and drilled shaft; Splice spacing; FEM simulation; Multiscale modeling; Lap length; Stirrup ratio; Concrete strength
资金
- Scientific Research Funds of Huaqiao University (China) [51261120374]
- National Natural Science Foundation of China (NSFC) [51261120374]
- Postgraduate Research and Innovation Project of Hunan Province (China) [CX2016B104]
- China Scholarship Council (CSC) [201606130109]
- Texas Department of Transportation (United States) [0-6914]
The structural performance of large-scale rectangular column-circular drilled shaft interface using non-contact splices is investigated through experimental study and numerical analysis. The influences of lap spacing and the length of overlapped longitudinal bars, the stirrup ratio and the variation of concrete strength on the global mechanical response and mesoscale cracking pattern are analyzed. According to the provisions in current design guidelines, a total of eleven specimens are designed for parametric study. The macroscopic load-displacement curves, the cracking pattern of concrete of designed specimens are comparatively discussed. The experimental results matched well with that of the FEM analysis. The research findings can provide valuable guidance on the construction and design of non-contact lap splices with geometric irregularities in the following Phase II of this project.
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