| 摘要 |
A cross beam for a bridge handrail having sound absorption structure is provided to prevent the noise from being ejected to the outside by absorbing. A cross beam(1) for a bridge handrail having sound absorption structure comprises: a removable sound absorbing plate(3) and a fixed cross beam(2) separately manufactured, having a sound absorbing hole(4); a coupling groove(5) in the combining part of the fixed cross beam; a coupling projection(6) placed in the removable sound absorbing plate to be connected each other. |
