Abstract

Results of an experimental study on the structural performance of EWECS columns under the varying or constant high compressive axial force are summarized in this paper. Under the constant high compressive axial force, EWECS columns become brittle with rapid progression of axial deformation, but under the varying axial loading, the deformation capacity of EWECS columns are considerably improved. In addition, the calculated ulitmate strength based on the superposed strength theory are very close to the exprimental values except for cases of varying low compressive loading.

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