(1 同济大学土木工程学院 上海 200092;2 江苏省第一建筑安装有限公司博士后工作站 泰州 225300)
［提要］ 针对受腐蚀多层混凝土框架改变其使用功能的特点，利用“反算法”反推出上部结构的可承受荷载，以满足地基基础的承载力；结构加固中，柱优先采用加大截面法，梁采用综合加固法，板采用体外预应力法。正常使用一年后进行试验测试，构件工作性能表现良好，证明所采用的加固设计方案有效。
［关键词］ 腐蚀 钢筋混凝土框架 改造 加固 设计
Analysis of Reconstruction and Strengthening Design for a Corroded Multistory RC Frame/
Jiang Fengchang1,Zhu Cimian1,Xue Jiansheng2,Jiang Ye2(1 School of Civ.Eng., Tongji University, Shanghai 200092,China; 2 Postdoctoral Research Station, Jiangsu No.1 Construction  and Installation Co., Ltd., Taizhou 225300,China)
Abstract:Based on the characteristics of a corroded multistory RC frame with changed function, the inverted analysis method is used to optimize loads applied on the upstructures so as to satisfy bearing capacities of the foundation. Section increasing method is given priority to apply to the corroded columns, and then the comprehensive method to the beams, external prestressing method to the slabs. Oneyear sound service and test prove that all members are in good performance and the design program is favorable.
Keywords:corroded; reinforced concrete frame; reconstruction; strengthening; design 
*国家自然科学基金资助项目(50508028)。