| As a new kind of composite structure, concrete-filled Stainless Steel Tube (CFSST) columns were formed by filling concrete in the Stainless Steel tubes. This new type of composite structures have many advantages such as great durability, excellent corrosion resistance, and improved fire performance. At present, the research of stainless steel tube concrete, mostly concentrated on the axial compression behaviour, and the research on Concrete-filled Stainless Steel Tube under Biaxial Eccentric Compression is still limited up to date.This paper conducted a series of experimental work on concrete filled stainless steel tube under biaxial eccentric compression. The research work in this paper is summarized as follows:1. The research on CFSST columns home and abroad was reviewed. The limits on the current research are pointed out. The objectives of the present work and contents are described.2. A total of thirty concrete-filled square Stainless steel tubes and twenty-six concrete-filled rectangle stainless steel tubes were tested under eccentric compressive load. The primary parameters in the tests were tube slenderness ratio and eccentricity ratio. The influences of various parameters on the biaxial eccentric compression of the stainless steel tube concrete columns were investigated.3. Several design codes for concrete filled steel tubes, such as AISC(2010), EC4(2004), and DBJ(2010) were used to predict the ultimate strength of concrete filled stainless steel tubes under biaxial compression, and the comparison of predicted results and the experimental ones were discussed. The outcome of this paper is expected to contribute to the design of innovative concrete filled stainless steel tube in the practical engineering. |
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