高层建筑结构平移施工全过程实时监测分析  

Analysis of real-time whole process monitoring for high-rise structural relocation moving

作　　者：周广东[1] 李爱群[1] 李杏平[1] 丁幼亮[1] 卫龙武 

机构地区：[1]东南大学土木工程学院,南京210096 [2]江苏东大鸿基科技有限公司,南京210096

出　　处：《建筑结构》2012年第4期139-143,共5页Building Structure

基　　金：国家杰出青年基金资助项目(50725858);东南大学优秀博士学位论文基金(YBJJ0922);住房和城乡建设部科学技术项目(2010-K9-36)

摘　　要：为了保证常州红星大厦平移施工过程的安全和评价平移就位后结构的性能,对该建筑物平移施工全过程进行了实时监测。分别在结构顶层和层1布置了加速度传感器以监测结构的振动响应,在柱根部、上托架梁底部和下轨道梁顶部等关键部位布置了应变传感器以监测结构的应变。监测结果表明:首次启动和顶推机构失效会引起较大的结构振动,正常平移过程中结构的振动与普通结构在环境激励下的振动相当;平移施工过程在上部结构中引起的附加应变可以忽略不计,在轨道中引起的应变较大,设计时需要引起重视。实时监测数据为结构平移施工过程提供技术支撑,监测结果可为以后的平移工程设计和施工提供参考。In order to keep the safety of the construction process and evaluate the performance of the relocated structure,the monolithic moving structure of the highest aspect ratio in Changzhou Hongxing Building was real-time monitored in the whole construction process.The vibration was measured using acceleration sensors that are located in the top and bottom of the structure.The strain was measured using strain gauges that are pasted on the root of the columns,the bottom edge of the underpinning truss and the top edge of the rail beam.The monitoring results indicate that the first start and the failure of pushing system and dragging system induce dramatic vibration;the vibration induced by moving process is approximately equal to the vibration excited by ambient load;the additional strain induced by structural relocation moving can be ignored;the strain in the moving track need pay special attention in designing structural moving engineering.The data of real-time monitoring can offer a technological support for the process of structure relocation moving.The results can provide reference for similar moving engineering design and construction process.

关 键 词：建筑整体平移 加速度 应变 监测 

分 类 号：TU375[建筑科学—结构工程]