某超高层建筑悬挑钢结构施工模拟分析及现场监测  

Construction Simulation and Monitoring of the Cantilever Steel Structure of a High-rise Building

作　　者：韩杰 黄浩[2] 赵超[2] 

机构地区：[1]广东大亚湾核电服务集团有限公司,广东深圳518031 [2]重庆大学土木工程学院,重庆400044

出　　处：《施工技术》2013年第8期40-42,53,共4页Construction Technology

基　　金：国家自然科学基金(50808185);国家自然科学基金(51078368);教育部高等学校博士学科点科研基金

摘　　要：某超高层建筑10～25层为悬挑钢结构,采用大悬臂转换钢桁架结构体系。该悬挑钢结构施工时采用钢桁架胎架进行支承,悬挑部分安装焊接完毕后拆除胎架(卸载)。为保证结构质量及施工安全,施工前对施工过程进行精细的有限元模拟分析,掌握了结构在卸载过程中的受力状态变化规律,并在施工中对关键区域进行了应变及变形监测。验证了采用施工仿真模拟-现场监测-施工后补充分析的方法可以合理地制定施工方案,可靠地保证施工安全及质量,是一种保证重要结构安全性的综合方法。The 10th storey to 25th storey of a super high-rise building is a cantilever steel structure,for which large suspension transfer truss was used.The cantilever structure was supported by temporary bracketing steel truss structure during construction and the temporary support was removed(unloading) after the welding for the cantilever structure was completed.In order to assure quality of the structure and construction safety,finite element analysis was carried out to simulate the unloading process.During the unloading construction,the strains and deformations of the steel structure were also monitored.This procedure demonstrated that a proper construction scheme can be made following the procedure of construction simulation,site monitoring,and supplementary after-construction analysis.It provides a comprehensive approach to guarantee the structural safety of important structures.

关 键 词：高层建筑 钢结构 悬挑 施工监测 卸载 有限元分析 

分 类 号：TU393.3[建筑科学—结构工程]