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Experimental and numerical study on the stability capacity of Q690 high-strength circular steel tubes under axial compression
Abstract This paper presents experimental investigation on the local and overall buckling capacity of Q690 high-strength circular steel tubes under axial compression. Coupon tests are undertaken to obtain the Young’s modulus, Poisson’s ratio, tensile yield stress and ultimate tensile strength of Q690 steel material. Forty-two specimens under axial compression are tested to evaluate the buckling behavior and the failure mode. Test results indicate that most of the existing design standards are conservative for the design of Q690 steel tubes. The distribution model of residual stress is measured by cutting ring method. Then, a finite element model based on modified column deflection curve method (CDC) is built to assess the effects of initial imperfection and residual stress on the stability capacity of the steel tubes. Finally, design methods and recommendations are provided for estimating the stability capacity of high-strength circular steel tubes.
Experimental and numerical study on the stability capacity of Q690 high-strength circular steel tubes under axial compression
Abstract This paper presents experimental investigation on the local and overall buckling capacity of Q690 high-strength circular steel tubes under axial compression. Coupon tests are undertaken to obtain the Young’s modulus, Poisson’s ratio, tensile yield stress and ultimate tensile strength of Q690 steel material. Forty-two specimens under axial compression are tested to evaluate the buckling behavior and the failure mode. Test results indicate that most of the existing design standards are conservative for the design of Q690 steel tubes. The distribution model of residual stress is measured by cutting ring method. Then, a finite element model based on modified column deflection curve method (CDC) is built to assess the effects of initial imperfection and residual stress on the stability capacity of the steel tubes. Finally, design methods and recommendations are provided for estimating the stability capacity of high-strength circular steel tubes.
Experimental and numerical study on the stability capacity of Q690 high-strength circular steel tubes under axial compression
Wang, Hui (author) / Guo, Yonghua (author) / Bai, Yongtao (author) / Zhang, Bin (author) / Sun, Qing (author) / Xue, Jianyang (author)
International Journal of Steel Structures ; 17 ; 843-861
2017-09-01
19 pages
Article (Journal)
Electronic Resource
English
Experimental Study on Bearing Capacity of Q690 High-Strength Steel Tubes under Axial Load
| British Library Conference Proceedings | 2014
| British Library Online Contents | 2017