DESIGN METHOD OF TECHNICAL SPECIFICATION FOR CONCRETE-FILLED STEEL TUBULAR(DBJ 13-51-2003) AND RELIABILITY ANALYSIS

The design formulae listed Technical Specification for Concrete-Filled Steel Tubular Structures( DBJ 13- 51 - 2003) of Fujian local standard are introduced in this paper. A comparison between the predicted results and test results is carried out. Good agreement is achieved. The second moment of first order method recommended in the National Design Standard of Building Structures( GB 50068- 2001) is applied to analyse the ability of design formula of axial compressing, pure bending and compression- bending members, these formulae are recommended in Fujian local standard. The analytical results indicate that the reliability indexes of the design formula satisfy the demand of the National Design Standard of Building Structures( GB 50068- 2001) for plastic material on the whole.