| 摘要 |
<p>The present invention is to provide a steel composite beam, a hybrid beam having variable sections, and a hybrid steel composite beam, which are to increase the tension and compression cross section of the end and center portions of the beam by coupling upper and lower plates of the steel beam through two web plates, reinforce the web part of the beam, and reduce the height of the beam. To achieve the purpose, the steel composite beam (30) rigidly connected between steel columns (100) is formed by vertically arranging a lower plate (32) and an upper plat (31) having a circular opening (36) within the end negative moment of the beam at a certain interval. A left web plate (33) and a right web plate (34) are arranged between the upper and lower plates (31, 32) at a certain interval to face each other and are welded to the upper and lower plates (31, 32). A diaphragm (35) is installed between the upper and lower plates (31, 32) and is welded to the upper and lower plates (31, 32). The steel composite beam (30) is filled with concrete (37) through the circular opening (36).</p> |
