- 摘 要
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(1 哈尔滨工业大学交通科学与工程学院,哈尔滨 150090; 2 铁道第五勘察设计院东北分院工经所,哈尔滨 150006)
[摘要]针对一栋11层框剪结构底层框架柱混凝土工程的质量问题,分析了其对整体结构可靠性的影响。根据柱轴压比不同而分别采取两类加固措施:外套钢板箍及大缀板外包角钢柱,通过横向约束效应,提高混凝土强度,降低轴压比,增强结构延性;根据刚度等效原则计算了加固后结构的内力、动力反应、首层位移与层高比等控制值;最后验算了其耐久性。
[关键词] 结构加固; 约束效应; 刚度等效; 轴压比
Design of strengthening columns in the ground floor of a frame-shear wall structure
Liu Lipeng1,Wang Haichuan2,Ma Jun1,Yang Dawei1(1 School of Transportation Science and Technology, Harbin Institute of Technology, Harbin 150090,China; 2 Institute of Engineering Management, Northeast Branch of the Fifth Survey and Design Institute of China Railways, Harbin 150006,China)
Abstract:To the concrete defect of an 11 layers frame-shear wall structure’s ground floor, the influence of the imperfection to the structure is discussed. According to the different ratio of compressive force to ultimate capacity, two repaired methods are provided. Owing to the effect of transverse confining, the concrete strength of columns is increased. Ratio of compressive force to ultimate capacity is lowered and the ductility of structure is improved. According to the equivalent stiffness principal, the structure’s force, seismic capacity and deflection are analyzed. And durability is also checked. It can provided consults to the other strengthened engineering.
Keywords:structure repaired; confined behavior; equivalent stiffness; ratio of compressive force to ultimate capacity
哈尔滨工业大学交通科学与工程学院创新与发展基金资助。
作者简介:刘立鹏,博士,讲师,Email:liulipeng@hit.edu.cn。
参考文献
[1] GB50010—2002混凝土结构设计规范[S]. 北京: 中国建筑工业出版社, 2002
[2] 郭继武. 建筑抗震设计[M]. 北京: 高等教育出版社, 1993
[3] 李田, 刘西拉. 混凝土结构耐久性分析与设计[M]. 北京: 科学出版社, 1999
[4] 王雨光. 纤维环向缠绕加固混凝土轴心受压短柱试验研究[D]. 哈尔滨: 哈尔滨工
业大学, 2000
[5] 钟善桐. 钢管混凝土结构[M]. 北京: 清华大学出版社, 2003
[6] 唐岱新. 工程事故处理[M]. 哈尔滨: 哈尔滨工业大学出版社, 2001
[7] JGJ3—2002高层建筑混凝土结构技术规程[S]. 北京: 中国建筑工业出版社, 2002[8] 李田, 刘西拉. 混凝土结构耐久性设计[J]. 土木工程学报, 1994,27(2):2328
[9] 李宏毅, 陈朝晖. 结构耐久性的应用研究现状[C]∥第五届全国建筑物鉴定与加固改造学术讨论会论文集. 汕头: 汕头大学出版社, 2000