1987 Fiscal Year Final Research Report Summary
REINFORCEMENT OF REINFORCED CONCRETE SHEAR WALLS WITH OPENINGS
| Project/Area Number |
61550403
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Building structures/materials
|
|---|
| Research Institution | University of Tokyo |
|---|
Principal Investigator |
HOSOKAWA Youji University of Tokyo, 工学部, 助手 (60011235)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
AOYAMA Hiroyuki University of Tokyo, 工学部, 教授 (80010669)
|
|---|
| Project Period (FY) |
1986 – 1987
|
| Keywords | Shear wall with openings / diagonal reinforcement / Shear resistance / peripheral reinforcement / 限界変形 |
|---|
| Research Abstract |
Shear walls are frequently constructed with openings for windows or doors, which decrease the shear and deformation capacity. Many investigations of earthquake damage have revealed that reinforced concrete shear walls with openings failed in shear on both sides of the openings. Therefore, it is desired to develop a rational design procedure to reinforce the shear wall with an opening to improve the strength and deformation capacity.
The effect of diagonal reinforcement, placed on the both side of the opening, was experimentally studied on the behavior of shear wall with an opening. From the test results, the following conclusions may be drawn;
1) The diagonal reinforcement placed in the wall panel adjacent to the opening, was effective increasing the shear resistance of the wall.
2) The amount of increased shear resistance can be estimated as the shear carried by the diagonal reinforcement in tension.
3) The diagonal reinforcement was effective increasing the deformation capacity after the maximum shear resistance was attained.
4) The peripheral reinforcement at the corner of the opening, required by AIJ (Architectural Institute of Japan) Standard for Structural Calculation of Reinforced Concrete Structures, reduced the extension of corner cracking, but did not contributed to the improvement of shear resistance and deformation capacity.
|
