Mechanical Behavior of Steel-Concrete Composite Beams Subjected to Combined Hogging Bending and Torsional Moments

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K18108
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Structural engineering/Earthquake engineering/Maintenance management engineering
• Research Institution: Waseda University
• Principal Investigator: LIN Weiwei 早稲田大学, 理工学術院, 准教授(任期付) (60623585)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: Composite Beam / Negative Bending Moment / Torsion / Loading Test / Numerical Analysis

Outline of Final Research Achievements

Composite steel and concrete structures have been used extensively in civil engineering structures due to the benefits of reduced noise, easy construction, and improved seismic behavior etc. However, for composite beams in the negative moment regions, concrete slab is usually in tension and easy to crack. For curved composite beams, the composite section needs also to resist the torsional moment. However, there is no design standard considering the effects of torsional moment. This research aims to investigate the mechanical behavior of composite beams under combined negative bending and torsional moments. Based on the results from this study, it has been confirmed that the presence of negative torsional moment will reduce the negative bending moment load carrying capacity of the composite beam. In addition, the interaction relationship between torsion and negative bending moments and the mechanical performance of composite beams with partial shear connections, were also investigated.

Free Research Field

構造工学・地震工学・維持管理工学