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Performance of fixed beam without interacting bars

Frontiers of Structural and Civil Engineering 2020年第5期14卷 1180-1195页

作者： Aydin SHISHEGARAN Behnam KARAMI Timon RABCZUK Arshia SHISHEGARAN Mohammad Ali NAGHSH Mohammreza MOHAMMAD KHANI School of Civil Engineering Iran University of Science and TechnologyTehran 13114-16846Iran International Institute of Earthquake Engineering and Seismology Tehran 19537-14453Iran Division of Computational Mechanics Ton Duc Thang UniversityHo Chi Minh CityVietnam Faculty of Civil Engineering Ton Duc Thang UniversityHo Chi Minh CityVietnam School of Civil engineering Islamic Azad UniversityTehran ***Iran School of Civil Engineering Isfahan University of TechnologyIsfahan ***Iran

Increasing the bending capacity of reinforced concrete(RC)elements is one of important topics in structure *** goal of this study is to develop a transferred stress system(TSS)on longitudinal reinforcement bars for increasing the bending capacity of RC *** study is divided into two parts,i.e.,experimental tests and nonlinear FE *** experiments were carried out to determine the load-deflection curves and crack patterns of the ordinary and TSS fixed *** FE models were developed for simulating the fixed *** obtained load-deflection results and the observed cracks from the FE analysis and experimental tests are compared to evaluate the validation of the FE nonlinear *** on the validated FE models,the stress distribution on the ordinary and TSS bars were *** found the load carrying capacity and ductility of TSS fixed beam are 29.39%and 23.69%higher compared to those of the ordinary fixed *** crack expansion occurs on the ordinary fixed beam,although there are several crack openings at mid-span of the TSS fixed *** crack distribution was changed in the TSS fixed *** TSS fixed beam is proposed to employ in RC frame instead of ordinary RC beam for improving the performance of RC frame.

关键词： transferred stress system bending capacity crack opening crack propagation FE nonlinear model stress distribution

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