2003 Fiscal Year Final Research Report Summary
Development of Damage-Free columns with using Plastic-Deformable Materials in the Plastic-Hine Region
| Project/Area Number |
13450184
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
構造工学・地震工学
|
|---|
| Research Institution | Tokyo Institute of Technology |
|---|
Principal Investigator |
KAWASHIMA Kazuhiko Tokyo Institute of Technology, Department of Civil Engineering, Professor, 大学院・理工学研究科, 教授 (20272677)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
ICHIKAWA Atsushi Railway Technical Research Institute, Visiting Professor, 研究開発推進室, 主査(研究職)
WATANABE Gakuho Tokyo Institute of Technology, Department of Civil Engineering, chief examiner, 大学院・理工学研究科, 助手 (50334545)
MUTSUYOSHI Hiroshi Saitama University, Department of Civil Engineering, Professor, 工学部, 教授 (60134334)
|
|---|
| Project Period (FY) |
2001 – 2003
|
| Keywords | Earthquake Engineering / Seismic Design / Fault Displacement / Fault Model / Near-Field Ground Motions / Fault Dislocation / Bridge / Foundations |
|---|
| Research Abstract |
In an earthquake, a standard reinforced concrete column develops plastic deformation in the plastic hinge region under a strong near-field ground motion. Although the lateral confinement is effective to enhance the plastic deformation capacity, it is likely that the damage has to be repaired after an earthquake. This study aims at developing a column in Which a rubber layer is built-in at the plastic hinge so that the column has a 4% drift deformation capacity without damage in the concrete. Prestressing tendons are installed in the column in order to resist tension force in addition to reinforcing bars. A cyclic loading test is conducted for eleven reinforced concrete columns. Fiber element analysis was conducted to interpret the test results. It is found from the test and analysis that damage of concrete in the plastic hinge region is extremely limited in the rubber layer built-in columns. Thus, it was concluded that the development 'of damage-free column which enables to deform up to 4% drift without having significant damage Was completed although there are many problems which remain to be solved to realize the implementation.
|
Research Products
(35 results)
