新型悬挑支撑架现场实测及有限元分析  

ON-SITE MEASUREMENT AND ANSYS ANALYSIS OF CANTILEVER SUPPORT SYSTEM

作　　者：胡长明[1] 刘凤云[1] 杨建华 赵云波[1] 任文军 才素平 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]陕西华洲置业发展有限公司,西安710065 [3]中国二冶集团有限公司,内蒙古包头014010

出　　处：《工业建筑》2015年第4期136-142,共7页Industrial Construction

基　　金：国家自然科学基金项目(50978219);陕西省教育厅专项科研计划项目(12JK0898);包头市科技计划项目(2013x1007)

摘　　要：为满足当今建筑行业新型结构施工的需求,提出了一种新型悬挑支撑形式。基于该新型悬挑支撑,建立考虑节点半刚性连接和广义初始缺陷的有限元模型,分析和验证其正确性、实用性和安全性;对该新型悬挑支撑形式在工程实际中的应用进行架体杆件应力-应变监测和试验,以便预知和应对施工过程中的突发情况、对该新型悬挑支撑架体进行必要的优化和设计;通过有限元分析与试验结果对比分析,验证有限元模型的准确性以及考虑节点半刚性连接和广义初始缺陷进行有限元分析的必要性,为后续该新型悬挑支撑体系的设计及工程应用提供重要的参考依据。To meet the needs of the new structure construction,a new kind of cantilever support system is brought forward.Based on the system, it was built a finite element model taking account of the joint semi-rigid connection and generalized initial imperfections, whose correctness, practicability, security were analyzed and verified.In order to predict and treat the emergency in the construction of the system, its stress and strain were monitored and a further optimization of the new cantilever support system was also conducted.By the contrastive analysis of the finite element and the test results,the correctness of the finite element model and necessity of thinking about the influence of the joint semi-rigid connection and generalized initial imperfections were verified, which provided important reference and basis for the design and application of the cantilever support system.

关 键 词：现场实测 有限元分析 半刚性节点 扭转刚度 悬挑支撑体系 

分 类 号：TU731.2[建筑科学—建筑技术科学]