비틀림을 받는 RC 및 PC부재의 균열폭 계산방법에 관한 연구 = A Study on the Crack Width Formula of the RC and PC Member under Torsion

다국어 초록 (Multilingual Abstract)

Since the highstrengthed steel and concrete is used in RC and PC structure, more and detailed design method is used and the section of member has also reduced. The crack in the design became an importanen.
When the highstrengthed steel inside the member is used under high stress, the width of crack in concrete is significantly generated. This crack is not only given a rough surface in the exterior but also deteriorated the durability of the structure due to eroding. By this time, the study of crack generated from bending and tensional force has been activited in many nations.
In the design method to maintain the serviceability and the durability, the width of crack in the standard code used in present has proposed according to the enviromental condition.
The crack problem of RC and PC member under the tensional force has not been enough studied. The objective of this study is to derive the formula for calculating the width of crack on PC member under the pure tensional force among the methods of restricting the width of crack. This study will be contributed to the design method for the evaluating of serviceability.