2001 Fiscal Year Final Research Report Summary
Establishment of Analytical Methodology for Mechanical,Characteristics of Steel-Concrete Hybrid Structures
| Project/Area Number |
11450169
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
土木材料・力学一般
|
|---|
| Research Institution | Saitama University |
|---|
Principal Investigator |
MACHIDA Atsuhiko Saitama Univ.,Civil Eng., Professor, 工学部, 教授 (50008869)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
OKUI Yoshiaki Saitama Univ., Civil Eng., Asso. Prof., 工学部, 助教授
YAMAGUCHI Hiroki Saitama Univ., Civil Eng., Professor, 工学部, 教授 (50134474)
MUTSUYOSHI Hiroshi Saitama Univ., Civil Eng., Professor, 工学部, 教授 (60134334)
TAKESI Maki Saitama Univ., Civil Eng., Asis. Prof., 工学部, 助手 (60292645)
|
|---|
| Project Period (FY) |
1999 – 2001
|
| Keywords | FEM Aanalysis / Strain Softening / Mohr-Coulomb Criterion / Bonding Element / Slip / Exfoliation / Strut and Tie Model |
|---|
| Research Abstract |
(1) A FEM program was developed to analyze the mechanical behavior of hybrid structures in which steel girders are rigidly connected to RC pier. In this program, concrete was assumed as homogeneous material, and Mohr-Coulomb's failure criterion was adopted considering strain softening. In order to treat bonding phenomena between concrete and reinforcing bar or steel plate rigorously, bonding elements were developed based on the previously proposed models and incorporated into the program. In particular, the bonding element between concrete and steel plate can express slip and exfoliation phenomena. The developed program can be applied to composite structures in general.
(2) Comparison of analysis with experimental results showed that the developed program can trace the behavior accurately up to large deformation region.
(3) Analysis on the hybrid structures of actual scale showed that, unless some special measures are taken, most of the load from super structure is transferred to the connection and its vicinity, hardly distributing to the lateral direction.
(4) A strut and tie model, which can analyze the behavior more simply and can be used as design tool, was developed based on the analysis.
|
