Research on interactive buckling behavior of welded steel box-section columns

Liu, Yang; Shi, Gang; Zhao, Menghan; Zhou, Wenbin

doi:10.1016/j.tws.2017.01.030

Cited by 35 publications

(24 citation statements)

References 13 publications

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“…It is used as a reference to compare with the imperfection profiles in other cases. Moreover, it should be noted that previous studies have reported that adopting a characteristic local imperfection amplitude with the imperfection profile being the local buckling mode from linear buckling analysis may provide a reasonably accurate prediction of the ultimate load [36,39]. Therefore, it may also be treated as an equivalently practical reference.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…With the validated FE model, various equivalent geometric imperfections recommended by the previous study [36] and Eurocode 3 [38] were assessed. Yang et al [39] investigated the imperfection sensitivity of welded thin-walled box-section columns based on an FE model validated from experimental studies. It was found that the local imperfections had a greater effect on columns with higher width-thickness ratios and global imperfections had a profound effect on columns with higher slendernesses.…”

Section: Introductionmentioning

confidence: 99%

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Sensitivity of elastic thin-walled rectangular hollow section struts to manufacturing tolerance level imperfections

Shen

Wadee

2018

Engineering Structures

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Finite element models for elastic thin-walled rectangular hollow section (RHS) struts with pre-defined local and global geometric imperfections are developed within the commercial package Abaqus. A unified local imperfection measurement based on equal local bending energy is proposed. The effects of imperfect cross-section profiles, imperfection wavelength in the longitudinal direction and the degree of imperfection localization on the ultimate load and equilibrium path are investigated and the most severe imperfection profiles are determined. A parametric study on the wavelength of the most severe local imperfection profile is conducted and a semi-empirical equation to approximate the corresponding wavelength is proposed. Moreover, an equation to calculate the global buckling load of thin-walled RHS struts with tolerance level doubly-symmetric cross-section local imperfections is proposed.

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Section: Numerical Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sensitivity of elastic thin-walled rectangular hollow section struts to manufacturing tolerance level imperfections

Shen

Wadee

2018

Engineering Structures

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“…In steel columns, the issues of buckling can be divided into three types: overall buckling, local buckling, and interactive buckling [10,11]. In prismatic columns with rectangular cross section and medium slenderness ratio, overall buckling is normally observed rst [12].…”

Section: Introductionmentioning

confidence: 99%

“…e results showed buckling resistance for such members and were standardized by the reduction factor based on the Ayrton-Perry formula [19] and calibrated by strong theoretical and empirical background. e local and overall stability of the columns through simulating their geometric and material nonlinear behavior was investigated [11]. A methodology [20] was devised to estimate the elastoplastic properties of metallic materials from the hardness measurements using the two most frequently used sharp indenters, i.e., the Vickers indenter and the Knoop indenter.…”

Section: Introductionmentioning

confidence: 99%

Buckling Analysis and Stability of Compressed Low‐Carbon Steel Rods in the Elastoplastic Region of Materials

Partskhaladze

Mshvenieradze

Medzmariashvili

et al. 2019

Advances in Civil Engineering

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is paper presents new approaches for solving a problem of the stability of compressed rods in the elastoplastic working region of materials. It is known that the columns of buildings, supports of engineering devices, drill rods of oil, and gas extraction industry may be subjected to significant risk of stability loss. Nowadays, there are design methods based on test results defining the relations (e.g., critical stresses-slenderness) to avoid this risk due to stability loss, but the precision and limits of definition are not always known. e main objectives of the study were to develop new approaches that would allow specifying the values of critical stresses of compressed elements beyond the proportional limit. e problem of stability of the compressed elements in the elastoplastic region was studied according to the stability theory. e authors suggested an original approach to the issue; in particular, the determination of values of the critical stresses and the finding of the points of the bifurcation were carried out by the tangent established by experimental results and by the approximation of the so-called double modulus. Comparative analysis showed the advantage of the proposed approach, particularly that the new critical curves were located below the curves of Engesser-Karman and Shanley and above the critical curves established by building codes. A new approach for the determination of critical stresses in the elastoplastic region was developed through which the structural reliability and economic efficiency was increased by almost 12% compared to the existing approaches.

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“…Furthermore, parametric studies were carried out, and comparisons were made between numerical results and calculated values from different design codes. Yang et al performed an experimental and numerical study of interactive buckling behavior of welded steel box‐section columns. And a design proposal was presented for steel column interactive buckling.…”

Section: Introductionmentioning

confidence: 99%

Influence analysis of bracket set on seismic performance of steel eave columns in Chinese traditional style buildings

Xue

Gao

2018

Structural Design Tall Build

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This paper presents influence analysis of bracket set on seismic performance of steel eave columns in Chinese traditional style buildings. Eight 1/1.5-scale steel eave columns were constructed and tested under low cyclic reversed loading, including 4 specimens with bracket set and 4 specimens without bracket set. Based on the analysis of the strain of the specimens, the failure modes of the specimens were obtained. In addition, the hysteresis loops, skeleton curves, degradations of stiffness and strength, ductility, and dissipation capacities of the specimens were analyzed. Bracket set changed the force transfer mechanisms and failure modes of the specimens and had a significant influence on the seismic performance of the specimens. Compared with the specimens without bracket set, the yielded and ultimate bearing capacities of the specimens with bracket set improved by 30.7% and 24.0%, respectively. And also, the stiffness of the specimens with bracket set at the yielded and ultimate points increased by 52.8% and 135.6%. The dissipation capacities of the specimens with bracket set were 2.12 times those of the specimens without bracket set at yielded load. However, the ductility of the specimens with bracket set slightly decreased by 8.5%. It was shown that the seismic performance of the specimens with bracket set was better than that of the specimens without bracket set. The work in this paper provides a basis for further theoretical study on the seismic performance of steel eave columns in Chinese traditional style buildings. KEYWORDS bracket set, Chinese traditional style building, low cyclic reversed loading, seismic performance, steel eave columns | INTRODUCTIONChinese ancient architecture is the crystallization of eastern culture and Chinese civilization, which records the glorious development course of Chinese nation. [1] Therefore, whether from the perspectives of archeology, history, science, culture, or art, Chinese ancient architecture is the treasure of Chinese culture and the exotic flower of world civilization. However, the well-preserved buildings have been rare through a variety of natural disasters and wars so far.Recently, with the rapid development of tourism and the deepening of cultural globalization, Chinese traditional style buildings emerge in many historic cities. Chinese traditional style buildings are the inheritance and development of Chinese ancient architecture, which make full use of modern materials and show the similar external shapes to Chinese ancient architecture. [2] As the integration of modern technology and ancient culture, Chinese traditional style buildings spread Chinese traditional culture and embody the essence of Chinese ancient architecture. Chinese traditional style buildings are mainly divided into reinforced concrete structure and steel structure, and the latter has been extensively adopted in many historic cities because of light-weight and high-strength, good seismic performance and recyclability.Steel structure has been used in building constructions, and there ...

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Research on interactive buckling behavior of welded steel box-section columns

Cited by 35 publications

References 13 publications

Sensitivity of elastic thin-walled rectangular hollow section struts to manufacturing tolerance level imperfections

Sensitivity of elastic thin-walled rectangular hollow section struts to manufacturing tolerance level imperfections

Buckling Analysis and Stability of Compressed Low‐Carbon Steel Rods in the Elastoplastic Region of Materials

Influence analysis of bracket set on seismic performance of steel eave columns in Chinese traditional style buildings

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