邵剑文，  干  钢，  肖志斌
    （浙江大学建筑设计研究院，杭州310027）

[摘要] 结合一个实际工程，对砖混．框架混杂结构进行分块抗震鉴定，分析加固重点。通过增设混凝土抗震墙、对原有砖墙进行钢筋混凝土板墙加固等手段，加强两者之间的协同工作能力，从而提高整体抗震能力。对于单跨框架，通过计算及构造，避免其成为抗震薄弱环节。对托换梁在底层砖墙拆除过程进行全过程监测，结果表明，托换梁可按承重墙梁进行分析。
[关键词] 砖混框架混杂结构；抗震鉴定；抗震加固改造；托换梁
中图分类号：TU318    文献标识码：A  文章编号：1002-848X( 2011) S2-0281-06

    Seismic appraisal and strengtherung design of a brick-frame mixed structure
    Shao Jianwen, Gan Gang, Xiao Zhibin
    ( Arclutectural Design and Research Institute, Zhejiang University,  Hangzhou 310027,  China)

Abstract: Based on an actual project, the seismic appraisal was made separately for the brick and frame structure, and the key point was found in the strengthening. By adding concrete shear wall and masonry strengthening with concrete splint, the mixed structure was reinforced against the seismic action. With strengthening both in calculation and construction, the single-spanning frame was strengthened avoid to be the worse part in whole structure. The strain monitoring of the underpinning beam was performed during the removal of bear wall, and the results show that the beam can be treated as a wall beam in calculation.
Keywords: brick-frame nuxed structure, seisnuc appraisal; earthquake-resistance strengtherung and modification; underpinning beam