The whole system is supported by the main jack arrangement when concreting, placed at the front supporting Bracket and the (rear) Suspension Gallows ? or on supporting brackets only at the start and expansion joint spans.

• 整个系统在混凝土浇注过程中由前牛腿及（后）吊架上主千斤顶系统支撑，在起始段和伸缩缝处则在前后牛腿处支撑。