Study of Influences of Reduced Elastic Modulus of Concrete in Taiwan on the Seismic and Collapse Evaluation of RC Structures
Other Title
台灣混凝土彈性模數折減對鋼筋混凝土結構耐震與崩塌性能評估影響研究
Journal
Journal of the Chinese Institute of Civil and Hydraulic Engineering
Journal Volume
31
Journal Issue
3
Pages
239-251
Date Issued
2019
Author(s)
Abstract
According to recent research, the actual elastic modulus Ec of concrete in Taiwan is 80% of Ec calculated by current design code. Current codes which relate to Ec would be modified in the future because of the reduction of Ec. The objective of this research is investigating the influences of reduced Ec on current RC structure designs. Furthermore, this research also evaluates the seismic and collapse capability of structure with reduced Ec under the seismic load. Based on FEMA P695 report, this research builds control frame models (Ec = 15000 (fc')0.5) and experimental frame models (Ec = 12000 (fc')0.5) to conduct nonlinear push-over analysis, time history analysis and incremental dynamic analysis. The results show that the nonlinear responses of structures with reduced Ec would indeed lower both seismic and collapse capability. Although the capability of Experimental Frames (0.8 Ec) slightly decrease according to nonlinear analysis, all of them still meet the requirements of current code in Taiwan.
SDGs
Type
journal article