The Affects of the Bar Ductility on the Failure Morphology and Safety of the Structures
Abstract:
The safety of structures does not completely depend on the force - bearing capacity. The omenless brittle failure has a great impact on the safety. The ductility of the bars is one of the key factors that determine the failure morphology. After the analysis on the failure morphology and failure condition of the concrete members, the recommendation to improve the design and to avoid the brittle failure is proposed. The main measures are: to grade the bars according to ductility and specify their applications; to use the hot -rolled bars with good ductility as the dominant reinforcement in the common concrete structures, to adopt the wires or tyre cord with high strength and low relaxation as the leading reinforcement in the prestressed concrete structures; to strictly control the quality of bars when being cold processed; not to use the cold - processed bars as prestressed ones and not to consider the plastic design; to strengthen the measures of reinforcement construction.
Author:
Xu Youlin, Cheng Zhijun, Wang Xiaofeng
Affiiation
Chinese Academy of Architecture
PDF:
Source:
Research and Application of High-Strength Reinforcing Bar - Vanitec Symposium, Hangzhou, China, Oct. 2003, pp. 74-83
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