| Title |
Fire Resistance Performance of Precast Segmental Concrete Lining for Shield Tunnel |
| Authors |
한병찬(Han, Byung-Chan) ; 하라다카즈노리(Harada, kazunori) ; 권영진(Kwon, Young-Jin) ; 김윤용(Kim, Yun Yong) |
| DOI |
https://doi.org/10.12652/Ksce.2014.34.1.0095 |
| Keywords |
내화성능;프리캐스트 세그먼트;콘크리트 라이닝;열전달해석;RABT 시간가열곡선 Fire resistance;Precast segment;Concrete lining;Heat flow analysis;RABT criterion |
| Abstract |
It is well known that axial tension decreases the shear strength of RC & PSC beams without transverse reinforcement, and axial compression increases the shear resistance. What is perhaps not very well understood is how much the shear resistance capacity is influenced by axial load. RC beams without shear reinforcement subjected to large axial compression and shear may fail in a very brittle manner at the instance of first diagonal cracking. As a result, a conservative approach should be used for such members. According to the ACI Code, the shear strength in web is calculated by effect of axial force and the vertical force in the stirrups calculated by $45^{\circ}$ truss model. This study was performed to examine the effect of axial force in reinforced concrete beams by nonlinear FEM program (ATENA-2D). |