发震断裂带5km内的框支剪力墙结构的隔震设计

Isolation design of frame-supported shear wall structure located at fault zone within 5km

为了研究8度区距离发震断裂带5km以内框支剪力墙结构隔震设计的特点,对某框支剪力墙结构进行了隔震设计,设计结果表明,转换梁中部由于剪力墙端部的倾覆力矩产生的轴力较大。为了减小这部分轴力,结构布置应符合框支剪力墙结构的相关要求;在下支墩设计时,在地下室增加剪力墙布置以及在柱墩中增加型钢,确保下支墩在罕遇地震作用下抗震和抗剪承载力满足要求。

In order to study the characters of isolation design for frame-supported shear wall structure located at fault zone within 5 km, the isolation design of frame-supported shear wall structure was done. The design result shows that the axial force in the middle of converse beam caused by overturning moment at end of shear wall is large. In order to reduce this axial force, structural arrangement should meet the design requirement of frame-supported shear wall structure. In designing the under buttress piers, shear walls need to be added in the basement and section steels need to be added in the piers to ensure that the seismic and shear capacity of the under buttress piers meet the requirements under rare earthquakes.