【摘要】 重庆西永综保区监管大楼办公主楼为大跨度连体结构,连体跨度58.6m,连接体底部与顶部均采用钢结构桁架与两侧的筒体形成巨型框架。根据办公主楼的结构特点并结合施工单位转换桁架整体提升的施工方案,采用SAP2000进行了办公主楼的温度应力分析与施工模拟分析,得到连接体桁架的温度应力,并得到各施工步的内力与变形,按温度应力及施工模拟分析的结果进行设计。分析表明桁架杆件会承担较大的温度应力,按阶段施工并考虑混凝土徐变效应后,结构各构件会发生内力重分布,内力重分布对桁架弦杆的影响大于桁架腹杆。更多还原

【Abstract】 The main office building of Chongqing Xiyong Integrated Free Trade Zone Regulatory building is a large-span connective structure,with the span of 58. 6m. The mega-frame is made up of steel trusses above,steel trusses below and concrete shear wall tube structures on both sides. According to structural feature of the main office building and the construction scheme of integral lifting for transfer truss,SAP2000 was used to analyze the temperature stress and simulate the construction procedure,and the temperature stress of trusses,internal force and deformation of each construction step were calculated.The results show that the trusses can bear larger temperature stress. Each structural member will happen internal force redistribution in the case of considering concrete creep effection and each construction step.The influence of internal force redistribution on chord member is greater than the influence on web member.更多还原