夹挤式双榀框架托换承重砖墙设计  

Design Method of Underpinning Load-Bearing Brick Walls by Double-Beam Frame

作　　者：钱晓军[1] 李杰[1] 王伟[2] 

机构地区：[1]同济大学土木学院建筑工程系,上海200092 [2]浙江建设职业技术学院,杭州310012

出　　处：《结构工程师》2011年第2期132-137,共6页Structural Engineers

摘　　要：就某办公楼采用双榀钢筋混凝土框架夹挤托换工程,采用SAP2000计算软件进行了施工过程有限元模拟,并与施工过程中框架梁挠度和应变实测数据进行了比较。分析表明,底层部分剩余小墙肢在墙体拆除后出现轴力减小的卸载现象。对于剩余小墙肢和抗剪不足墙体用玻璃纤维进行约束及抗剪加固。工程实践表明,所提出的方法在加固应用中结构安全、施工可行。Based on an office building＇s strengthening project,this paper conducts the construction finite element analysis using SAP2000 to its double-beam reinforced concrete frame underpinning construction process.The results are compared with data of the RC-beam＇s deflection and strain from monitoring test under construction.Analysis presents unloading phenomenon of axial force reduction in some remaining small wall-limbs after the removal of the load-bearing walls at bottom.The existing small wall-limbs and walls lacking of shear-bearing abilities are strengthened by GFRP（Glass Fiber Reinforced Polymer）.The conclusion of this paper shows that this method is safe,feasible and practical in strengthening of structures.

关 键 词：砖混结构 加固 托换 玻璃纤维 底层框架 

分 类 号：TU364[建筑科学—结构工程]