摘要
本文在美国HAZUS方法基础上,结合我国抗震设计规范,提出了一种类PUSHOVER方法预测超高层建筑群地震震害。该方法考虑单体建筑之间的差异性且易于编程,可用于大量、快速、安全的超高层建筑震害预测。选取典型超高层建筑进行类PUSHOVER方法计算,与参考文献中有限元法计算结果比较,验证了该方法的适用性与准确性;对上海市164幢150 m以上超高层建筑群进行了震害预测。计算结果表明,上海市150 m以上超高层建筑群在7度多遇地震、7度设防地震及7度罕遇地震作用下的抗震性能良好,满足规范中小震不坏、中震可修、大震不倒的要求。该类PUSHOVER方法具有快速、定量、普适的特点,可将其纳入不同精度城市建筑抗震韧性评价体系中。
Based on American HAZUS method,a kind of PUSHOVER-like method is put forward in combination with the Chinese code of seismic design to predict seismic damages of regional super high-rise buildings.This method is easy to be programmed considering the variability among single buildings,which can be used to predict large super high-rise building seismic damage quickly and safely.Typical buildings are selected for calculation with the PUSHOVER-like method and compared with results of finite element method in references,which verified the applicability and accuracy of the method.In addition,seismic damage prediction was made for the 164 super high-rise buildings.The calculation results indicate that the selected super high-rise buildings over 150 meters in Shanghai have good seismic performance under minor,moderate and major earthquakes of 7 degrees,which meets the requirements of the Chinese code for no damage under minor earthquakes,repairable under moderate earthquakes and no collapse under major earthquakes.The PUSHOVER-like method has the characteristics of speediness,quantization and wide application.It can be incorporated into the seismic resilience grading evaluation system of urban buildings with different accuracy.
作者
周颖
王忆初
周广新
周伯昌
ZHOU Ying;WANG Yichu;ZHOU Guangxin;ZHOU Bochang(State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China;Earthquake Administration of Shanghai Municipality,Shanghai 200062,China;Shanghai Sheshan National Geophysical Observatory and Research Station,Shanghai 200062,China)
出处
《结构工程师》
2021年第6期35-43,共9页
Structural Engineers
基金
上海市财政项目(20130302)。
