摘要
随着国内外强震动记录的积累,结构地震响应时程分析中如何选择合适的地震动输入成为亟待解决的关键问题。本文首先搜集整理了中国数字强震动台网(NSMONS)2007—2015年强震记录数据和美国PEER的NGA-West2项目强震记录数据,作为强震记录备选数据库。然后结合我国第五代地震动参数区划图的要求,提出了兼顾特征周期参数的分周期段最小二乘匹配方法。最后考虑到我国不同地区强震记录分布的显著差异,以优先使用国内记录为原则,按照能否在省内,国内,国内及NGA-West2记录中选出符合要求记录的优先次序,将全国主要省会城市分为三类,并各选取一个典型城市,给出了对应的短,中,长周期段的强震记录选取结果,可供工程科研人员用于不同自振周期结构的抗震时程分析使用。
With the accumulation of strong motion recordings,it is necessary to study on the selection of ground motion as input for structural dynamic time history analysis. Firstly,the recordings from Chinese National Strong Motion Observation Network System(2007 to 2015) and NGA-West2 dataset are collected and processed to establish the ground motion database. Then the seismic code design spectral used as target spectrum is given according to the requirement of the newest fifth seismic zoning map of China. The least square method for spectrum-matching is applied for the different range of periods considering the possible fundamental period range of target structure. Considering the significantly different seismic activity in China,the cities are divided into three categories and the priority of selecting recordings is from the local province,NSMONS and then the whole database. The corresponding selection result for short,medium and long periods are given for three typical cities as examples. The methods and final results could be used in structural dynamic analysis with different fundamental periods.
出处
《工程抗震与加固改造》
北大核心
2017年第S1期28-33,共6页
Earthquake Resistant Engineering and Retrofitting
基金
公益性地震行业科研专项(201508005)
黑龙江省科技基金项目(LC2015022)
关键词
强震记录选取
区划图
强震记录数据库
strong ground motion selection
seismic zoning map
ground motion database
