既有工业厂房加固改造技术
作者简介:
赵来柱,工程师,E⁃mail:1341297153@ qq. com
作者单位:
北京建工四建工程建设有限公司,北京 100024
基金项目:
∗北京建工集团科技计划(RZCA140320220001)
摘要:
对已停产老工业厂房烧成窑尾高耸框架结构加固改造技术进行研究,包括基础土方开挖、基础加固、上部结构新增楼层及短肢剪力墙等,在保留原建筑设备及工业风貌的同时满足安全和使用功能要求。进行基础加固改造时,采用分区格开挖技术,在原独立基础内部和外围新增筏板,形成整体筏形基础,以增强整体结构稳定性。进行上部结构加固改造时,首先拆除原有砖混结构,以减小结构自重,降低对地基承载力的要求,然后进行梁、柱扩大截面和粘贴钢板施工。加固施工过程中采用红外监测设备对结构位移进行监测,以保证结构安全性和稳定性。

English:
The reinforcement and reconstruction technology of the high⁃rise frame structure of the existingindustrial plant fired kiln tail has been studied, including foundation earthwork excavation, foundationreinforcement, new floors and short⁃limb shear walls of the superstructure,while retaining the originalbuilding equipment and industrial features and meeting the safety and use function requirements. Duringthe foundation reinforcement and reconstruction, the partition grid excavation technology is adopted, andthe raft is added inside and outside the original independent foundation to form an integral raftfoundation,which can enhance the stability of the overall structure. When the upper structure isreinforced, the original brick⁃concrete structure is first removed to reduce the weight of the building andreduce the requirements for the foundation bearing capacity, and then the beams and columns areexpanded and the steel sheet is fastened. In the process of reinforcement construction, in order to ensurethe safety and stability of the structure, infrared monitoring equipment is used to monitor the structuraldisplacement.