This study includes an analytical investigation of a composite beam consist of concrete, structural tees, and the reinforcement steel. The plastic hinge length theories are applied to this composite beam to calculate maximum deflection exactly. This composite beam can reduce the floor height compared with the reinforced concrete structure with same internal force. To calculate maximum deflection, we used plastic hinge length suggested by Corley, Sawyer and Mattock. Later, the experimental investigation should be performed to find out the plastic hinge length exactly.

• 김지훈(학생회원, 경희대학교 건축공학과 석사과정) | Ji-Hun Kim
• 홍원기(정회원, 경희대학교 건축공학과 정교수) | Won-Kee Hong
• 박선치(정회원, 경희대학교 건축공학과 박사후 연구원) | Seon-Chee Park
• 임균택(학생회원, 경희대학교 건축공학과 석사과정) | Gyun-Taek Lim
• 고효진(학생회원, 경희대학교 건축공학과 석사과정) | Hyo-Jin Ko