七层钢筋混凝土异型柱支撑框架结构模型振动台试验研究

SHAKING TABLE TEST STUDY OF RC FRAME MODEL WITH HETERO-COLUMNS AND DIAGONAL BRACES

七层钢筋混凝土异型柱支撑框架结构体系的模型,缩尺比为1:3,在振动台上进行了模拟地震动试验,结果表明:该体系的抗震性能较好,可使斜杆在预估地震强度的作用下先开裂并继续工作,从而减轻主体结构的地震破坏。并指出,该体系应进一步实现抗裂抗倒双重设防准则与其设计方法,研究发挥支撑的消能减震作用。这种抗震结构体系,已在天津市的轻质节能建筑中采用。

One seven story reinforced concrete frame model with hetero-columns and diagonal braces was tested on shaking table. The results show that this structural system has better seismic capacity so that the earthquake damage to main structure is reduced by making the diagonal braces to crack but to continue work under predicated earthquake intensity. It is also pointed that the structure should be investigated further for the realization of double earthquake resistant criteria and design method against crack and collapse. Meanwhile,to bring the energy-dissipation and vibration-reduction functions of the braces into full play is also an interested subject. This structural system has been used in Tianjin city.