Study on replacement of RC slab of composite girder focusing on reduction of construction period

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420476
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Structural engineering/Earthquake engineering/Maintenance management engineering
• Research Institution: Utsunomiya University
• Principal Investigator: NAKAJIMA AKINORI 宇都宮大学, 工学(系)研究科(研究院), 教授 (70164176)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 合成桁 / 床版取替え / プレキャスト床版 / グループスタッド / 使用性の限界状態 / 耐荷性の限界状態 / 無収縮モルタル / モルタル層

Outline of Final Research Achievements

In this research, we carry out the static test of the composite beam specimen with the grouped stud arrangement. In this case, six specimens with the different arrangement of the stud are used. In one of the specimens, studs are arranged at equal intervals and the conventional cast-in-place reinforced concrete slab is used to compare the behavior with the one of the specimens having the precast concrete slab. We discuss the detailed behavior of the composite beam having the precast concrete slab with the grouped stud arrangement.
As a result, we investigate the adequate grouped stud arrangement which satisfies with the performance of the composite beam considering the relative slip of the stud at the serviceability limit state and the ultimate moment of resistance. The important findings in replacing RC slab of composite beam can be drawn through the research.

Free Research Field

土木工学，構造工学