Abstract
Performance-based seismic design (PBSD) method has been widely recognized in recent years, it can be used for the future structural design. And the direct displacement-based design method (DDBD) is one of the most effective ways to implement the performance-based seismic design (PBSD) theory in current. In this paper, aiming to the composite frame consisting of composite beams and continuous compound spiral hoop reinforced concrete columns (CCSHRCS), its DDBD flowchart is presented, and the structure identified performance objectives in the preliminary design process and specific seismic performance assessment methods are given. Finally, through the calculation results of CCSHRCS frame case that demonstrated the reasonableness of the method. It provides an effective tool for the seismic design of CCSHRCS frame structures
Highlights
Current codes (ASCE7-10 2010 [1]; GB50011-2010 [2]) specify the use of either the equivalent lateral-force method or the modal response spectrum method for the seismic design of frame structures
It has been shown (Sullivan 2013 [9]) that design base shears obtained for RC frame structures from direct displacement-based design method (DDBD) can range from one half to four times of those obtained from the equivalent lateral force method currently specified in international codes
Direct displacement-based seismic design (DDBSD) is established by "alternative structure" method for reinforced concrete frame proposed by Gulkan and Sozen 1974 [22]
Summary
Current codes (ASCE7-10 2010 [1]; GB50011-2010 [2]) specify the use of either the equivalent lateral-force method or the modal response spectrum method for the seismic design of frame structures It has been demonstrated (Priestley 1993 [3]; Priestley et al 2007 [4]) that force-based design methods possess a number of fundamental shortcomings such as the use of force-reduction (behavior) factors that are set without explicitly evaluation of ductility demands, and the use of elastic analysis to estimate inelastic force distributions in mixed structural systems (Priestley et al 2007 [4]). DBD procedure for composite CCSHRCS frames consisting of composite beams and continuous compound spiral hoop reinforced concrete columns and gauges its performance of the methodology through non-linear pushover analysis of a case study
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