一、桥面连续的构造桥面上的伸缩缝在营运中很容易损坏。为要提高行车的舒适性,减轻桥梁的养护工作和提高桥梁的使用寿命,应当力求减少伸缩缝的数量。办法之一就是将简支的上部构造作成桥面连续的上部构造,即是将简支上部构造在其伸缩缝处施行铰接。铰应当具有承受临时荷载所需的柔性并 First, the continuous construction of the deck expansion joints on the bridge in the operation is very easy to damage. In order to improve the driving comfort, reduce the maintenance work of bridges and improve the service life of bridges, the number of expansion joints should be reduced. One of the ways is to make the upper structure of simple support as the continuous superstructure of the bridge deck, that is, the simple support upper structure is hinged at its expansion joint. Hinges shall have the flexibility required to withstand temporary loads