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某工程为特别不规则结构,针对大底盘弱连接多塔偏置情况进行整体模型、分塔模型、并层模型分析。通过多种软件进行弹性时程、静力弹塑性、楼板应力对比分析对结构的抗震性能进行了较全面的研究。通过设置多方向框架梁提高大底盘整体性,针对关键薄弱构件设置防倒塌抗震措施。结果表明,结构的各项计算指标均符合规范要求,有效的抗震措施提高了结构抗震性能,结构安全可靠。
A project is a special irregular structure. The whole model, the tower model and the stratum model are analyzed for the multi-tower bias situation with weak connection of large chassis. Through a variety of software for elastic time history, static elasto-plasticity, floor stress contrast analysis of the structure of a more comprehensive study of seismic performance. By setting the multi-directional frame beam to improve the integrity of large chassis, anti-seismic measures against collapse are set up for the key weak components. The results show that all the calculated indexes of the structure meet the requirements of the code. Effective seismic measures improve the seismic performance of the structure and the structure is safe and reliable.