【作者】 朱寻焱；

【导师】 丁阳；

【作者基本信息】 天津大学 ， 建筑与土木工程， 2012， 硕士

【摘要】 抚顺规划馆沙盘展示厅采用单层网壳结构。单层网壳结构设计计算分析中通常整体稳定起控制作用,因此有必要对单层网壳结构进行极限承载力分析;骨架杆件连接节点以及支座节点采用铸钢节点,需分析铸钢节点的受力性能。论文采用有限元软件ANSYS和ABAQUS,对单层网壳结构模态、屈曲特征值、结构弹性极限承载力和弹塑性极限承载力以及铸钢节点受力性能进行了设计计算分析。结果表明,单层网壳结构极限承载力满足《空间网格结构技术规程》( JGJ7-2010)设计要求,铸钢节点受力性能满足《铸钢节点应用技术规程》( CECS235:2008)设计要求。天津大剧院工程,结构形式复杂,包括屋盖钢结构桁架、吊挂楼层和钢筋混凝土剪力墙等。15.9m、20.9m标高处楼层通过高强钢棒吊挂于屋盖钢结构桁架下弦,钢棒为传力关键构件。在施工临时支撑架卸载以及屋面、吊挂楼层混凝土浇筑过程中,监测钢棒的应力变化,以保证施工阶段结构的安全性。论文采用有限元软件ANSYS建立天津大剧院工程结构计算模型,模拟临时支撑架卸载以及混凝土浇筑过程,根据模拟结果确定应力变化较大的钢棒作为监测钢棒,布置传感器,针对不同施工工况采集监测数据,为保证工程安全施工提供依据。更多还原

【Abstract】 The sand table showroom of Fushun planning exhibition hall uses single layer latticed shell. The overall stability takes the control of the dominant role in the analysis of single layer latticed shell calculation, it is necessary to carry out the ultimate bearing capacity analysis. The steel casting between the components is used in the project. The paper includes in the bearing capacity of steel casting. In this paper, it uses finite element program ANSYS and ABAQUS. The processes are drawn as follows: the modal analysis, the eigenvalue buckling analysis, the elastic ultimate bearing capacity analysis, the elastic-plastic ultimate bearing capacity analysis, the bearing capacity of steel casting analysis. Based on analyses, some main conclusions are drawn as follows. The results of ultimate bearing capacity analysis meet the design requirements of《Technical Specification for Space Frame Structure》( JGJ7-2010). The results of bearing capacity of steel casting in elastic analysis meet the design requirements of《Technical Specification for Application of Connections of Structural Steel Casting》( CECS235:2008).Tianjin Grand Theatre project, the complex structure, includes the steel roof truss, hanging layer and reinforced concrete shear walls etc. Steel bars of hanging layer are critical component for the force transmission. The floors of 15.9m and 20.9m hang in the steel roof truss bottom chords through the high-strength steel bars. In the process of concrete pouring roof and hanging layer and temporary support frame unloaded, to monitor the stress change of steel bars are very significant which could ensure the structural safety of the construction phase. In the paper, it uses finite element program ANSYS to establish the model of Tianjin Grand Theatre to simulate the concrete pouring process and temporary support frame unloaded. Identify significant changes in stress of steel bars as measuring point. The sensors arrangement for monitoring date collected in different conditions are in order to provide a basis to ensure construction safety.更多还原