Theoretical study on initial stiffness of thin-walled steel T-stubs taking account of prying force

Qiang, Xuhong; Shen, Yifei; Jiang, Xu; Bijlaard, F.S.K.

Theoretical study on initial stiffness of thin-walled steel T-stubs taking account of prying force

Journal article (2020)

Authors

Xuhong Qiang Tongji University

Yifei Shen Tongji University

Xu Jiang Tongji University

F.S.K. Bijlaard Steel & Composite Structures -

Research Group

Steel & Composite Structures () (TU Delft)

T-stub Initial stiffness Prying force Theoretical study Thin-walled steel

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Published Date

2020

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Engineering Structures

Research Group

Steel & Composite Structures

Abstract

Based on the stationary value principle of energy and considering the influence of the distribution of prying forces on the initial stiffness of thin-walled steel T-stubs, the prediction formula for the position of prying force is derived. According to this formula, the theoretical calculation procedure of initial stiffness of thin-walled steel T-stubs is proposed. To validate the accuracy of this theoretical method, the proposed procedure is adopted to calculate the initial stiffness of a series of cases, afterwards the results of theoretical calculation and FE simulation are compared, in which the maximum deviation is within 10%.

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