某砖混结构墙体托换过程监测及性能研究  

CONSTRUCTION MONITORING AND PERFORMANCE ANALYSIS OF AN UNDERPINNING BRICK-CONCRETE STRUCTURE

作　　者：邵剑文[1] 干钢[1] 何勇[2] 毛江鸿[2] 崔何亮[3] 

机构地区：[1]浙江大学建筑设计研究院,杭州310027 [2]浙江大学结构工程研究所,杭州310058 [3]国家电力监管委员会大坝安全监察中心,杭州310014

出　　处：《工业建筑》2011年第12期141-145,105,共6页Industrial Construction

摘　　要：由于建筑结构功能改变,将某砖混结构教学楼通过墙体托换技术改造成大空间办公楼。为保证托换体系施工过程的安全性,采用光纤光栅技术(FBG)和分布式光纤应变传感技术(BOTDA),对托换体系的托换梁及加固柱进行施工全过程的应力-应变监测,并分析了托换体系的工作性能。监测结果表明:墙体拆除后设计的托换体系各组成构件均能参与结构受力,并具有足够的强度储备。Due to the change of structural function,one teaching building had to be retrofitted to a large-space office building.The underpinning technology had been adopted to transform this brick-concrete structure to a frame structure.In order to ensure its safety operation,fiber bragg grating technology（FBG） and distributed optical fiber sensor（BOTDA） had been used to monitor structural stress and strain during the whole period of construction.The test results show that the designed underpinning system performances well and can provide sufficient bearing capacity for this new retrofitted structure.

关 键 词：加固 改造 托换技术 施工监测 光纤光栅技术 分布式光纤应变传感技术 

分 类 号：TU398.5[建筑科学—结构工程]