고성능 섬유보강 시멘트복합재 활용 곡선 및 비정형 구조부재의 성능평가

Abstract

The aim of this study is to introduce a slim member with the same performance as the existing reinforced concrete member and the shape of the slim member have a curved surface that gives aesthetical values in an exposed open area along with the engineering values. The above values where attend by applying a High Performance Fiber Reinforced Cement Composite. In the study different formulas were established for material modeling, analysis and design of bending and shear strength based on the results of dynamic experiments on High Performance Fiber Reinforced Cement Composite for irregular structural members. In order to suggest a curve in the shape of the member, prior study should be made for the curved and irregular sections of the members. The study is done by analyzing the structural dynamic behavior and stress distribution for bending and shear that occurred to the members supporting loads that acts in a perpendicular direction to the axis of the horizontal structural member, the beam. Besides, the beam member is divided into two cases; one is bending and the other is shear, both highly affect the beam members. This paper tries to curve the problems by suggesting the shape and design directions in the longitudinal directions. The study conducted analytical and experimental evaluation to verify the performance of developed curve and irregular concrete structural members. At that moment, the study selects and uses the irregular and variable form which the study devised in order to make the curved and irregular concrete structural member perfect. For analytical verification and evaluation, the study compared newly developed design and strength calculation formulas with different country code of design and the study also conducted irregular section stratification bending analysis. In addition, the study was compared with the results from finite element analysis. Finally, the result of the experiment and the study verified the possibility of commercialization of the curved and irregular concrete structural members. These members even have more appealing appearance architecturally compared to the rectangular blocks. Furthermore the design of the curved shape of a member can be free in its own or can have a high functional role in line with the purpose and the application of High Performance Fiber Reinforced Cement Composite having the same or better structural performance from the existing reinforced concrete member. To conclude, the new member with High Performance Fiber Reinforced Cement Composite is expensive compared to the general type of concrete. However, the study shows that the new members can reduce costs since it decrease in total volume of concrete required and does not necessarily require finishing work it can be exposed reducing the finishing cost as well.