کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
13422560 | 1841735 | 2020 | 16 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An out-of-plane bending hysteretic model for multi-planar CHS X-connections
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
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چکیده انگلیسی
The multi-planar circular hollow section (CHS) X-connection is one of common configurations in single layered lattice steel tubular structures. A hysteretic model, including the skeleton model and restoring force model is proposed to simulate the hysteretic performance of X-connections under cyclic out-of-plane bending moments (OPB) generated by vertical seismic action. Exponential function is adopted in the skeleton model and the Ramberg-Osgood function is adopted in the restoring force model. The parameters in the hysteretic model are determined by finite element (FE) analysis and nonlinear regression. Additionally, an improved out-of-plane bending hysteretic model considering the influence of brace axial stress and chord normal stress is developed to simulate the seismic performance of X-connections in engineering practice. The proposed hysteric model is verified by experimental and FE results and the improved hysteretic model can consider the effect of strength degradation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Structures - Volume 23, February 2020, Pages 335-350
Journal: Structures - Volume 23, February 2020, Pages 335-350
نویسندگان
Bida Zhao, Chao Sun, Yangzheng Cai, Chengqing Liu,