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双塔连体结构是两个高层建筑由设置在一定高度处的架空连廊相连而组成的复杂高层建筑结构。双塔连体结构塔楼刚度大,而连接体部分受力复杂。连接体部分要协调两侧塔楼结构的变形,在地震作用下的反应远比单塔结构和无连接体的多塔结构受力复杂,会出现较强的耦联震动、扭转加大等现象,其结构的抗震性能也不如单体结构,我国现行《高层建筑混凝土结构技术规程》中规定连体部位应采用更严格的抗震措施进行设计。屈曲约束支撑作为一种集结构构件和耗能构件为一体的新技术,承载力高,变形能力强,解决了普通钢支撑受压失稳的问题。探讨了连体结构中设置屈曲约束支撑后结构性能的变化,通过动力弹塑形分析方法研究了结构的抗震性能,为解决复杂连体结构提供一些技术参考。
Twin towers Siamese structure is the two high-rise buildings set by a certain height of the corridor connected to form a complex high-rise buildings. Twin towers Siamese structure stiffness, while the connector part of the force complex. The connector body should coordinate the deformation of the tower structure on both sides, and the response under the earthquake is much more complicated than that of the single-tower structure and multi-tower structure without the connector body. Strong coupling vibration and torsion will appear. Its structure is not as good as the seismic performance of single structure, China’s current “high-rise building concrete structure Technical Regulations” provides that the Siamese site should be more stringent seismic design. As a new technology integrating structural components and energy-dissipating components, buckling restrained brace has high bearing capacity and strong deformation ability, and solves the problem of buckling and instability of ordinary steel supports. The change of the structural performance after the buckling restrained brace is discussed is discussed. The seismic performance of the structure is studied by the dynamic elasto-plastic analysis method, and some technical references are provided for solving the complicated conjoined structure.