摘要
随着中国社会经济的不断发展,高程及超高层建筑在中国得到迅速发展。由于伸臂桁架+核心筒结构体系简单、抗震性能好、抗压强度高、建筑成本低,目前国内在建的多个超高层建筑也均采用该抗侧力体系。通过本课题的研究,依托湖北金控大厦建立一套成熟的应力监测系统,实现对施工过程的有效控制,确保施工的安全性。同时通过监测伸臂桁架在封闭后的应力变化情况,研究伸臂桁架应力变化与相关沉降监测数据随时间发展的特征规律,为后续同类超高层结构伸臂桁架封闭时序的确定提供指导。经过近两年的实时监控数据表明,湖北金控大厦施工期间,各构件应变监控参数正常,满足建筑安全需求。该伸臂桁架封闭方案安全可行,具有良好的推广性,对同类建筑施工具有良好的示范作用。
With the continuous development of China’s social economy,elevation and super high-rise buildings have developed rapidly in China.Due to the simple structural system of outrigger truss+core tube,good seismic performance,high compressive strength and low construction cost,many super high-rise buildings under construction in China also adopt this lateral force system.Through the research of this topic,a mature stress monitoring system is established based on Hubei Financial Holding Building to achieve effective control of the construction process and ensure the safety of construction.At the same time,by monitoring the stress change of the outrigger truss after closure,the stress change of the outrigger truss and the characteristic law of the related settlement monitoring data with time are studied,which provides guidance for the subsequent determination of the sealing timing of the outrigger truss of similar super high-rise structures.After nearly two years of real-time monitoring data,it shows that during the construction of Hubei Financial Holding Building,the strain monitoring parameters of each component are normal to meet the needs of building safety.The outrigger truss closure scheme is safe and feasible,has good generality,and has a good demonstration effect on similar building construction.
作者
赵鹏翀
Pengchong Zhao(CCCC No.2 Engineering Co.,Ltd.,Qingdao,Shandong,266073,China)
出处
《工程设计与施工》
2023年第12期48-53,共6页
Engineering Design and Construction
关键词
高层建筑
应变监测
伸臂桁架
封闭时序
high-rise buildings
strain monitoring
reach truss
closed timing
