In this study, the bridge pier composed of multi-columns is proposed by using concrete-filled tubes. This structure is expected to be a new structural system to improve the energy absorption capacity under the earthquake. In order to obtain some useful information for reasonable design of the tubular joint in the proposed structure, the loading test of four joint specimens were carried out. The test result is summarized as follows; (1) Comparing to the design load, the maximum capacities of filled concrete specimen and hollow specimen are 3 times and 5 times higher, respectively. Therefore, it results in an enough safety side. (2) The ultimate deformation in concrete filled tubular specimen is very small because of the stiffened effect by filled concrete. (3) The failure pattern in hollow specimen is local buckling at the steel pipe. In the filling concrete specimen, local buckling did not occur, but cracking in the welded joint occurred. (4) It is confirmed that the composite tubular joint in the proposed structure can be designed enough safely by the present design specification. But it is necessary to consider the reinforcement effect of the filling concrete for a more reasonable design.
|Number of pages||9|
|Journal||Memoirs of the Faculty of Engineering, Kyushu University|
|Publication status||Published - Sep 1 2002|
All Science Journal Classification (ASJC) codes
- Atmospheric Science
- Earth and Planetary Sciences(all)
- Management of Technology and Innovation