| 摘要 |
<P>PROBLEM TO BE SOLVED: To support automobiles by compressed air since, while reinforcement is attached to the center of a bridge pier of a conventional bridge in order to support the weight of automobiles, too much reinforcement is heavy and many times more force is applied to the bridge pier supporting it. <P>SOLUTION: For the bridge of the invention, by pressurizing the inside (2) of a bridge girder (1) in order to support the weight of automobiles and attaching the reinforcement (5) for suppressing the expansion of a floor surface (4), pressurization reinforcement is performed with the force of air, and thus the bridge girder (1) is made light in weight. However, when the wind is strong, the bridge is closed, water is injected to make the bridge girder (1) heavy and the influence of the wind is avoided. <P>COPYRIGHT: (C)2012,JPO&INPIT |
