Shear behavior of composite frame inner joints of SRRC column-steel beam subjected to cyclic loading

Hui Ma; Sanzhi Li; Zhe Li; Yunhe Liu; Jing Dong; Peng Zhang

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자료유형: 학술저널

저자정보: Hui Ma (Xi’an University of Technology) Sanzhi Li (Xi’an University of Technology) Zhe Li (Xi’an University of Technology) Yunhe Liu (Xi’an University of Technology) Jing Dong (Xi’an University of Technology) Peng Zhang (Xi’an University of Technology)

저널정보: 국제구조공학회 Steel and Composite Structures, An International Journal Steel and Composite Structures, An International Journal Vol.27 No.4

발행연도: 2018.1

수록면: 495 - 508 (14page)

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In this paper, cyclic loading tests on composite frame inner joints of steel-reinforced recycled concrete (SRRC) column.steel beam were conducted. The main objective of the test was to obtain the shear behavior and analyze the shear strength of the joints. The main design parameters in the test were recycled coarse aggregate (RCA) replacement percentage and axial compression ratio. The failure process, failure modes, hysteresis curves and strain characteristics of the joints were obtained, and the influences of design parameters on the shear strength of the joints have been also analysed in detail. Results show that the failure modes of the joints area are typical shear failure. The shear bearing capacity of the joints maximally decreased by 10.07% with the increase in the RCA replacement percentage, whereas the shear bearing capacity of the joints maximally increased by 16.6% with the increase in the axial compression ratio. A specific strain analysis suggests that the shear bearing capacity of the joints was mainly provided by the three shear elements of the recycled aggregate concrete (RAC) diagonal compression strut, steel webs and stirrups of the joint area. According to the shear mechanism and test results, the calculation formulas of the shear bearing capacity of the three main shear elements were deduced separately. Thus, the calculation model of the shear bearing capacity of the composite joints considering the adverse effects of the RCA replacement percentage was established through a superposition method. The calculated values of shear strength based on the calculation model were in good agreement with the test values. It indicates that the calculation method in this study can reasonably predict the shear bearing capacity of the composite frame inner joints of SRRC column–steel beam.

참고문헌 (32)

참고문헌 신청

AIJ / 1994 / AIJ design guidelines for composite RCS joint

AISC / 1997 / Seismic provision for structural steel buildings

Bao, Y.Z. / 2014 / Experimental research on seismic performance of steel reinforced recycled concrete frame inner joints

Breccolotti, M. / 2010 / Structural reliability of eccentrically-loaded sections in RC columns made of recycled aggregate concrete / Eng. Struct. 32(11):3704~3712

Chen, H.J. / 2003 / Use of Building Rubbles as Recycled Aggregates / Cement Concrete Res. 17(33):125~132

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