AI总部基地弱连接连廊对多塔连体结构动力特性的影响

Influences of Flexible Connected Corridors on Dynamic Performance of Multi-tower Connected Structure of AI Headquarter

南京AI项目总部是多塔连体结构,分别在低位和高位通过钢连廊连接。低位连廊和高位连廊均采用铅芯橡胶支座与塔楼弱连接,高位连廊在支座处增设粘滞阻尼器,分别建立了多塔总装模型和单塔独立模型,对比了有无连廊对单塔结构动力特性的影响,并验算了大震时程下铅芯橡胶支座和阻尼器的最大位移。结果表明:大震下铅芯橡胶支座和阻尼器均可正常工作;铅芯橡胶支座和粘滞阻尼器有效耗散了地震能量。连廊对两侧单塔动力特性产生了影响,降低了连体结构高位连廊层以下的地震作用,放大了连体结构在高位连廊层以上(特别是顺连廊方向)的地震作用。

The headquarter of the Nanjing AI project is a multi-tower structure connected with steel corridors on both low and high location. The low and high-level corridors are all connected with the tower building with lead rubber bearing, and viscous dampers are set on the support of the high corridor. The multi-tower assembly model is established, as is the single-tower independent model. The influence of corridors on the dynamic performance of single tower structure is compared. The maximum displacement of the lead-rubber bearing and damper in response to seismic time-history excitations is checked. The results indicate that the lead-rubber bearing and damper can continue to function correctly during an earthquake. The seismic energy is dissipated by the lead rubber bearing and viscous damper. The corridors have an effect on the dynamic performance of single tower on both sides, reduce the seismic action below the high level corridor of the connected structure, and enlarge the seismic action above the high level corridor(especially along the corridor direction).