1989 Fiscal Year Final Research Report Summary
Proposal of steel Column Bases Solidified with RC Stub Covered with Steel Tubing and Tests the Characteristics.
| Project/Area Number |
63550418
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Building structures/materials
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| Research Institution | Science University of Tokyo |
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Principal Investigator |
HIRANO Michikatsu Science Univ. of Tokyo, Faculty of Eng., Professor, 工学部第一部, 教授 (80084359)
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| Co-Investigator(Kenkyū-buntansha) |
HODZUMI Hideo Science Univ. of Tokyo, Faculty of Eng., Research Associate, 工学部第一部, 助手 (10084336)
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| Project Period (FY) |
1988 – 1989
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| Keywords | Column Bases / Steel Square Pipe Column / Stiffness / Ultimate Strength / Mechanism of Stress Transfer / 応力伝達機構 |
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| Research Abstract |
A new structural method of steel column bases, which solidified with RC stub covered with steel tubing, was proposed. This method has good construction workability.
In order to clarify the mechanical characteristics of the proposed column bases, 24 specimens were tested under alternating horizontal load. The main parameters involved in the tests were height and covering depth of RC stub, compressive strength of concrete and arrangement of reinforcing main bar.
Some observations from the test results are as follows. 1. The column bases with high strength concrete were good mechanical characteristics in spite of small RC stub. 2. The yielding strength of many specimens were decided by yielding of reinforcing bar. But some specimens, which solidified with low stub consist of low strength concrete, were decided by failure of anchorage of reinforcing bar. 3. The steel tubing contributes to stress transfer from steel column to RC stub.
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