| Project/Area Number |
02452194
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
コンクリート工学・土木材料・施工
|
|---|
| Research Institution | TOHOKU GAKUIN UNIVERSITY |
|---|
Principal Investigator |
GOTO Yukimasa TOHOKU GAKUIN UNIVERSITY Faculty of Engineering, Department of Civil Engineering, Professor, 工学部, 教授 (50005154)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
OTSUKA Koji TOHOKU GAKUIN UNIVERSITY Faculty of Engineering, Department of Civil Engineerin, 工学部, 教授 (10048803)
|
|---|
| Project Period (FY) |
1990 – 1992
|
| Project Status |
Completed (Fiscal Year 1992)
|
| Budget Amount *help |
¥5,800,000 (Direct Cost: ¥5,800,000)
Fiscal Year 1992: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1991: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1990: ¥3,400,000 (Direct Cost: ¥3,400,000)
|
|---|
| Keywords | Lapped splice of deformed reinforcing bar / low cyclic fatigue strength / Longitudinal crack / Stress amplitude / Cyclic loading |
|---|
| Research Abstract |
Cyclic loading tests were carried out using axially loaded tensile specimens and beam specimens to investigate the fatigue strength of lapped splice of deformed reinforcing bar. As a result of the investigation it was seen that the loads when longitudinal cracks started in the surface of concrete at the end of lapped splices were in a certain range of the load. Then the average lateral strains on the surface of the concrete at the end of the lapped splice were also in a range of 50 x10^<-6> to 150 x10^<-6>. The strength of the lapped splices was strongly affected by the cyclic loading when the maximum load increased and entered the range of the longitudinal crack starting load. Below the range, cyclic loading did not affect to the strength of lapped splice.
|
