袁迎曙  秦杰  袁广林 吴庆安  姜利民
    （中国矿业大学建筑工程学院  徐州 221008）

[提要]  结合建筑物改造工程实例，在现有钢筋混凝土柱上采用锚筋技术附加钢筋混凝土短牛腿，用以支承增设的钢筋混凝土现浇楼面。通过实验室的试验研究，探明了附加牛腿的破坏机理，明确了该工程的设计计算方法。
[关键词]  钢筋混凝土柱 锚筋技术 短牛腿 破坏机理

According to the example of rehabilitation, narrow brackets of reinforced concrete attached to existing column of reinforced concrete by anchor bar can suppopt the attached floor structure of cast-in-place concrete. The test results in laboratory show the failure mechanism and the analysis method of the attached bracket is given.
Keywords: reinforced concrete column; technique of anchor bar;narrow bracket; failure mechanism