Collapse Analysis and Anti-Catastrophe Assessment Method for Isolated Bridges with Steel Piers

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K18136
• 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: Saitama University
• Principal Investigator: DANG Ji 埼玉大学, 理工学研究科, 助教 (60623535)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 危機耐性 / 倒壊確率 / 想定外地震動 / 漸増動的解析 / リスク評価

Outline of Final Research Achievements

In this study, the proposed Modified Park-Wen Model is verified by quasi-static loading test and Sub-Structure Pseudo-Dynamic Simulations with Kobe Earthquake and scaled High-Damping Rubber (HDR) bearings. Seismic response simulation for highway viaduct bridges were conducted. As its numerical model, a simplified Two-Degree-Of-Freedom model is used in Incremental Dynamic Analysis (IDA) to evaluated the Anti-Catastrophe Performance of this kind of structures under Design-Level-exceeded earthquakes, and to cumulate basic data about structural collapsing pattern and their probabilities. Using the fragility curves from result of IDA, though, the collapse probability is low for design level earthquake, most possible collapsing pattern under design exceeded earthquakes is the broken of rubber bearings.

Free Research Field

構造工学・地震工学・維持管理工学