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太原博物馆主楼为弱连体结构,结构形式采用钢框架与钢筋混凝土剪力墙的混合结构,其特点为扭转不规则、凹凸不规则、楼板不连续等,属于超限工程。采用基于性能的设计方法,确定了重点部位的性能目标,抗震加强措施采取设置楼面水平支撑和加强墙体约束边缘构件等方法。针对弱连体结构,对整体结构进行非线性时程分析,结果表明弱连接连廊对主楼影响较小,可以采用单塔的反应谱分析结果作为主要构件的设计依据。针对薄弱部位,要求独立承担本区域的多遇地震作用。同时进行了静力弹塑性推覆分析、竖向地震分析、斜柱引起的钢梁轴力以及钢梁与剪力墙的连接节点分析。结果表明在各种地震水平下结构和构件能够满足预定的性能目标。
The main building of Taiyuan Museum is a weak one-piece structure. The structural form adopts a mixed structure of steel frame and reinforced concrete shear wall, which is characterized by irregular torsion, uneven irregularities and slab discontinuity, which belongs to the overrun project. Based on the performance-based design method, the performance targets of the key parts are determined, and the measures for strengthening the aseismic reinforcement measures such as setting the level of the floor and strengthening the edge restraining components of the wall are adopted. For the weakly connected structure, the non-linear time-history analysis of the whole structure shows that the weakly connected corridor has less influence on the main building, and the single tower response spectrum analysis can be used as the design basis of the main structure. For vulnerable areas, it is required to independently undertake the earthquake-prone activities in the region. At the same time, static elastic-plastic nappe analysis, vertical seismic analysis, the steel beam axial force caused by inclined columns, and the connection node between steel beam and shear wall are analyzed. The results show that the structures and components meet the predetermined performance goals at various seismic levels.