2011 Fiscal Year Final Research Report

Investigation on mechanical characteristics of the abutment considered with the backfill soil and evaluation of the seismic performance of bridges considered with the movement limitation of the superstructure.

Research Project

Project/Area Number	21686041
Research Category	Grant-in-Aid for Young Scientists (A)
Allocation Type	Single-year Grants
Research Field	Structural engineering/Earthquake engineering/Maintenance management engineering
Research Institution	Kyushu University
Principal Investigator	KAJITA Yukihide 九州大学, 大学院・工学研究院, 准教授 (10403940)
Project Period (FY)	2009 – 2011
Keywords	桁間衝突 / 構造工学・地震工学 / 橋台 / 耐震 / 防災
Research Abstract	In this study, a horizontal static loading test is carried out to understand the resistance characteristic of an abutment. From the test results, it is understood that the maximum strength becomes larger in the case of the specimen with the backfill soil. However, the weakest part of the abutment is the basement of the vertical wall regardless of the backfill soil. Furthermore, as the results of the numerical simulation, we can estimate the load-displacement relation curve until the steel main bars in the vertical wall yielded.