Investigation on ultimate behavior of continuous elevated-girder highway bridges by multi-directional shake table test and development of advanced seismic performance verification method

2014 Fiscal Year Final Research Report

• Project/Area Number: 23246084
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Structural engineering/Earthquake engineering/Maintenance management engineering
• Research Institution: Nagoya Institute of Technology
• Principal Investigator: GOTO Yoshiaki 名古屋工業大学, 工学(系)研究科(研究院), 教授 (90144188)
• Co-Investigator(Kenkyū-buntansha): OBATA Makoto 名古屋工業大学, 工学研究科, 教授 (30194624) ; CHO Ho 名古屋工業大学, 工学研究科, 教授 (70303691) ; EBISAWA Takemasa 名古屋工業大学, 工学研究科, 助教 (90332709) ; OKUMURA Toru 名古屋工業大学, 工学研究科, 助教 (40332027)
• Co-Investigator(Renkei-kenkyūsha): HORI Muneo 東京大学, 地震研究所, 教授 (00219205)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: 耐震構造 / 耐震設計法 / 動的応答解析 / 連続高架橋 / 振動台実験 / 終局挙動 / 積層ゴム支承

Outline of Final Research Achievements

A large scale bidirectional shake table test was carried out on a 1/6.7 scale 2-span continuous elevated-girder bridge model by using the shake table array at Tongji University. Based on the test results, it was investigated how the ultimate behavior of the bridge system are affected by the interaction between the components such as steel or CFT piers, rubber bearings and a superstructure. In addition, an advanced FE model that precisely expresses the behavior of the entire bridge system was developed by appropriately modeling the interaction and behavior of the components. Finally, a reliable safety verification method for elevated-girder bridges were presented under the simultaneous input of horizontal bidirectional seismic acceleration components. In this method, the ultimate state of the steel and CFT piers are expressed by the interaction equation expressed in terms of the equivalent horizontal force components acting at the top of the piers.

Free Research Field

構造工学，耐震工学