期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2020
卷号：510
期号：5
页码：1-6
DOI：10.1088/1755-1315/510/5/052064
语种：English
出版社：IOP Publishing
摘要：In order to research the influence of the defect degree of cemented surface on the shear behaviour of prefabricated segmental epoxied joints, the paper considers the defect degree of cemented surfaces on the specimens of epoxied joints with single keys by direct shear test and records the ultimate shear loads and vertical relative slips, the failure modes of the specimens and the normalized shear stress-vertical relative slip curve are analysed, and the measured values of the ultimate shear loads are compared with the existing calculation formula. It can be concluded that the shear capacity, normalized shear stress and plastic deformation capacity of the specimens of epoxied joints with single keys without defect in the cemented surfaces have been improved which are compared with the specimens with 10% defects and the specimens with 20% defects. The BUYUKOZTURK O formula overestimates the shear capacity of the specimens with 10% defects, and underestimates the shear capacity of the specimens with no defects and10% defects; The formulas of Sun Xueshuai and Yuan Aimin underestimate the shear capacity of the specimens with no defects, 10% defects and 20% defects. It is not appropriate to ignore the effect of the defect degree in the cemented surface on the shear capacity of the epoxied joints.
