连续梁桥合拢段施工的临时支撑研究

连续梁桥合拢段施工的临时支撑合理设计是顺利合拢的安全保证。根据合拢段临时支撑的受力特点，提出相应的计算方法，进而讨论工程实践中常用的几种临时支撑锁定装置的形式。基于工程实例，详细探讨了连续梁桥合拢段施工临时支撑形式的选择和设计。研究表明：结构体系转换对临时支撑受力影响很大，大跨径连续梁桥解除临时固定支座约束后，采用外刚性支撑是可行的。

Study on Temporary Supports of Closure Segment Construction of Continuous Girder Bridge

The Proper design of temporary supports is safety guarantee of closure segment construction of continuous girder bridge. Firstly, according to the loading characteristics of temporary supports of closure segment, corresponding calculation methods are put forward. And then several kinds of common temporary supports forms are discussed. At last, based on one practical engineer- ing, the form selection and design of the temporary support of closure segment construction of continuous girder bridge are dis- cussed in detail. Research results indicate that structural system transformation have a great influence on the temporary support stress, and outer rigid temporary supports are feasible for closure segment construction of long - span continuous girder bridge. Research conclusion also provides theoretical basis for similar engineering practice.