本文结合消江大桥悬灌连续梁中跨合拢攄工实践，对中跨合拢临时约束锁定的基本原 理、计算方法及施工措施进行了介绍,以供施工参考。

Based on the construction practice of the Lijiang Great Bridge for grouting the con- necting gap of the middle span of the continuous girders,there were two restricted locking mea- sures, i. e. the temporary restricted locking of the bridge supports and the temporary restricted locking of the connecting gap. This paper introduces the basic principles, calculating methods and the construction procedure of these measures. They are valuable as reference for construction works.