大跨径预应力混凝土连续刚构桥是一种常规桥梁,具有无伸缩缝、跨越能力大、无需大型支座、行车平顺、无伸缩缝等特点,其目前已被广泛应用到大量桥梁工程领域。大跨度预应力连续刚构桥多采用挂篮悬臂浇筑法,但因受到施工荷载与温度变化的影响,加上梁体横截面的减小、悬臂梁段跨度的增长及竖向荷载的增加,工程施工的难度越来越大。由此可见,必须对大跨径预应力刚构桥的施工过程进行控制,由此保障其施工质量。 The long-span prestressed concrete continuous rigid frame bridge is a kind of conventional bridge with no expansion joints, large span capability, no need for large bearings, smooth running and no expansion joints. It has been widely applied to a large number of bridge engineering fields . However, due to the influence of construction load and temperature changes, as well as the decrease of the cross-section of the beam body, the increase of the span of the cantilever beam segment and the increase of the vertical load, large-span prestressed continuous rigid- Construction is more and more difficult. Therefore, it is necessary to control the construction process of the long-span prestressed rigid frame bridge to ensure the construction quality.