论文部分内容阅读
北京新机场航站区主要包括航站楼及综合换乘中心、综合服务中心三个建筑单元。综合服务中心由停车楼、酒店、办公楼组成,其中酒店采用钢筋混凝土框架结构体系及屈曲约束支撑。由于结构存在扭转不规则、楼板不连续、构件间断及局部不规则等超限项,为保证结构安全,对其进行小震承载力验算,并对关键构件进行性能化设计。为掌握屈曲约束支撑在大震作用下的耗能机制,运用ABAQUS软件进行动力弹塑性分析。结果表明:在8度三向大震作用下,所有屈曲约束支撑均屈服,且大部分滞回曲线的形状较饱满,发挥了良好的耗能作用。在大震作用下,酒店结构的弹塑性反应和破坏机制符合结构抗震概念设计要求,也满足规范“大震不倒”的抗震性能目标。
The terminal area of Beijing New Airport mainly includes three terminals: a terminal building, an integrated transfer center and an integrated service center. The comprehensive service center is composed of parking buildings, hotels, and office buildings. The hotel adopts a reinforced concrete frame structure system and buckling restraint supports. Due to structural irregularities such as torsional irregularity, floor discontinuities, intermittent components, and local irregularities, in order to ensure the safety of the structure, the small earthquake bearing capacity was checked and the key components were designed for performance. In order to understand the energy dissipation mechanism of the buckling restraint support under large earthquakes, ABAQUS software was used to analyze the dynamic elastoplasticity. The results show that all the buckling restraint braces are yielded under the action of the 8 degree triaxial earthquake, and most of the hysteresis curves are fuller in shape and play a good role in energy dissipation. Under the action of large earthquakes, the elasto-plastic response and destruction mechanism of the hotel structure meets the requirements of structural anti-seismic concept design, and it also meets the seismic performance target of “standard large earthquakes”.