求翻译：当一座桥，一座建筑物或其他类似结构物正处于施工中，混凝土一般只用于承担所产生的正应力，而配置的结构内的加强钢筋用于抵抗拉应力是什么意思？

When a bridge, a building or other similar structures are in construction, General only to assume the normal stress of concrete, while within the structure of concrete reinforcing bars and rods used to resist tensile stress