摘要
采用MIDAS/Gen有限元软件,全过程模拟结构施工(包括卸载阶段),并以此最终确定施加于千斤顶的初始压力。采用以压力控制为主,以电动液压千斤顶作为主要卸载工具的分区、同步、分级卸载技术。以卸载A区大悬挑结构为例,以数值模拟为基础,精心组织现场施工,成功进行卸载。实测数据与数值模拟数据对比分析结果表明卸载方案合理准确,且卸载后的检测结果表明大悬挑主要构件的变形均符合设计要求。
The MIDAS/Gen is used to simulate the whole construction sequence of this building（including unloading stage）. As a result, the initial unloading pressure which is applied to hydraulic jack is determined. Mainly controlled by pressure, together with electro-hydraulic jack as the main unloading tools, this unloading procedure is characterized with partition, synchronization and grading traits. Taking the large cantilever structure in zone A as an example, the temporary supports are unloaded successfully by accurate simulation and meticulous organization of site construction. Comparing the actual value and analog value, it indicates that the unloading scheme is effective and accurate. On the other side, structural monitoring indicates that the deformation of main components of large cantilever structure conforms to the design requirements.
作者
龚永庆
刘玉涛
王洪腾
朱钧
GONG Yongqing;LIU Yutao;WANG Hongteng;ZHU Jun(Zhongtian Construction Group Co.,Ltd.,Hangzhou,Zhejiang 310005,China)
出处
《施工技术》
CAS
2018年第20期69-71,84,共4页
Construction Technology
基金
混凝土大悬挑结构及异形结构关键施工技术研究(ZTYF-2015-01)
关键词
高层建筑
悬挑结构
液压千斤顶
有限元分析
卸载
施工技术
tall buildings
cantilever structure
hydraulic jack
finite element analysis
unloading
construction
