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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental and numerical study on the effective length of tower cross bracing
https://orcid.org/0000-0003-1278-2866
Abstract Based on the present study, a new design formula for the effective length coefficient of the commonly used cross bracing in transmission towers is proposed. A total of 22 structural tests were conducted considering the interaction in the buckling of cross bracing. The test results, including the failure modes and load-response histories, were reported. The numerical simulations were conducted and validated using multiple comparisons. The ultimate strengths, calculated by the Chinese design code of DL/T 5154, are not sufficiently accurate. An extensive parametric study based on a calibrated finite-element model was conducted to investigate several influential parameters. Implicit theoretical equations for effective length were formulated and evaluated. The numerical results were subsequently used to obtain a new design formula for the effective length coefficient associated with the stress ratios. It is shown that the proposed formula, which was obtained from piecewise linear fitting, improves the consistency and reliability of the prediction of the ultimate strength.
Graphical abstract Display Omitted
Highlights Twenty-two full-scale cross bracings with different stress ratios are tested. The numerical simulations and parametric analyses are conducted. The ultimate strength of cross bracing is theoretically derived. A new design formula for the effective length coefficient is proposed.
Experimental and numerical study on the effective length of tower cross bracing
https://orcid.org/0000-0003-1278-2866
Abstract Based on the present study, a new design formula for the effective length coefficient of the commonly used cross bracing in transmission towers is proposed. A total of 22 structural tests were conducted considering the interaction in the buckling of cross bracing. The test results, including the failure modes and load-response histories, were reported. The numerical simulations were conducted and validated using multiple comparisons. The ultimate strengths, calculated by the Chinese design code of DL/T 5154, are not sufficiently accurate. An extensive parametric study based on a calibrated finite-element model was conducted to investigate several influential parameters. Implicit theoretical equations for effective length were formulated and evaluated. The numerical results were subsequently used to obtain a new design formula for the effective length coefficient associated with the stress ratios. It is shown that the proposed formula, which was obtained from piecewise linear fitting, improves the consistency and reliability of the prediction of the ultimate strength.
Graphical abstract Display Omitted
Highlights Twenty-two full-scale cross bracings with different stress ratios are tested. The numerical simulations and parametric analyses are conducted. The ultimate strength of cross bracing is theoretically derived. A new design formula for the effective length coefficient is proposed.
Experimental and numerical study on the effective length of tower cross bracing
https://orcid.org/0000-0003-1278-2866
Abstract Based on the present study, a new design formula for the effective length coefficient of the commonly used cross bracing in transmission towers is proposed. A total of 22 structural tests were conducted considering the interaction in the buckling of cross bracing. The test results, including the failure modes and load-response histories, were reported. The numerical simulations were conducted and validated using multiple comparisons. The ultimate strengths, calculated by the Chinese design code of DL/T 5154, are not sufficiently accurate. An extensive parametric study based on a calibrated finite-element model was conducted to investigate several influential parameters. Implicit theoretical equations for effective length were formulated and evaluated. The numerical results were subsequently used to obtain a new design formula for the effective length coefficient associated with the stress ratios. It is shown that the proposed formula, which was obtained from piecewise linear fitting, improves the consistency and reliability of the prediction of the ultimate strength.
Graphical abstract Display Omitted
Highlights Twenty-two full-scale cross bracings with different stress ratios are tested. The numerical simulations and parametric analyses are conducted. The ultimate strength of cross bracing is theoretically derived. A new design formula for the effective length coefficient is proposed.
Experimental and numerical study on the effective length of tower cross bracing
Huang, Zulin (Autor:in) / Liu, Hongjun (Autor:in) / Zhang, Jingyao (Autor:in) / Li, Zhengliang (Autor:in) / Ohsaki, Makoto (Autor:in) / Bai, Qiang (Autor:in)
Thin-Walled Structures ; 182
20.10.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| Engineering Index Backfile | 1931
Transmission tower diagonal bracing
| Engineering Index Backfile | 1927
Effective length factor of X-bracing system
| British Library Conference Proceedings | 2008
TECHNICAL PAPERS - Effective Length Factor for Discontinuous X-Bracing Systems
| Online Contents | 2001