| 摘要 |
The present invention relates to a continuous hybrid girder consisting of a concrete block and a steel block, which is usually used as an upper structure of a bridge. The purpose of the present invention is to activate a hybrid beam girder by add efficiency to a connection method of the hybrid beam girder which has not been activated because of its complicated and uneconomic connection method although a long span structure is enabled through the weight lightening and continuation of the girder. To achieve the purpose of the present invention, the concrete block is placed on the section of a negative moment of a support, and a steel block is placed on a positive moment of a span. By introducing a tension to a tendon for connection until a top part of a contact surface is completely touched after a bottom part of the contact surface of blocks is touched in order to assemble the girder, a bending moment that forms an upward peaking on the girder automatically occurs in the girder assembly process. To automatically introduce prestress to the girder, a connection method is improved, and a steel piece for block connection is laid in the concrete block in order for the girder to be assembled only by connecting steels. The present invention can be applied as a structure that replaces an existing beam girder by achieving a practical use of the continuous hybrid beam girder whose support, that resists a shearing force and the negative moment, is made of concrete, and whose span, that usually resists the positive moment, is made of steel. The present invention also can be applied for a long span of the beam girder, or can be applied to a construction that replaces a worn-out beam girder without imposing a burden due to its weight light structure. |
