十堰市电力局调度大楼门厅结构改造与加固研究

摘要:针对门厅改造拔柱的需要，提出了采用托换梁和外包混凝土围套加固支承柱的处理方案，介绍了托换结构的设计原则和方法及施工要点与构造措施，介绍了最后拆柱时的施工要点与技巧.实践证明，本文提出的托换结构方案经济适用，施工方便，安全可靠，可供类似工程改造加固时参考.
关键词:托换梁;外包混凝土;加队

Abstract:To m eetth er equiremento fre constructingt heh allst ructuresa ndr emovingc olumns,th et reatings chemes adoptingb racketgi rdersan ds trengtheningsu pportingco lumnsw ithe ncasedre inforcedc oncreteis b roughtfo rward,and the design principle, design method, construction keypoints and constructional measures of underpinning structures are introduced, as well as the construction keypoints and technique of removing columns are presented.Practices prove the scheme of underpinning structures has economical eficiency, broad applicability and good credibility, while the structures are easy to construct, which can be referenced by the similar projects.
Key words:bracket girder; encased concrete; reinforcin