Cumulative damage effects of mainshock-aftershock sequences on RC-frame structures
作者：Lingxin Zhang,Baijie Zhu,Yunqin Xue,Jialu Ma
摘要：Frequent aftershocks often follow a strong mainshock.They can significantly increase cumulative damage to a structure.A model of a five-story reinforced concrete frame structure was designed and a nonlinear mathematical model of the structure was developed to investigate the damage states resulting from different mainshock-aftershock sequences.Mainshock-aftershock sequences consisting of one of three recorded mainshocks combined with one of five recorded aftershocks were created for input to the mathematical model.Inelastic energy dissipation and the Park-Ang damage index were used as measures of cumulative damage to the structure.The results demonstrate that consideration of only the single mainshock ground motion in seismic building design can result in the design and construction of unsafe buildings.Total cumulative damage to a structure is caused by the combination of damage states resulting from the mainshock and the aftershock(s).
發文機構：Institute of Engineering Mechanics Key Laboratory of Earthquake Engineering and Engineering Vibration Country Garden Holdings Company Limited Xinxiang 453000
關鍵詞：mainshock-aftershockRCframecumulativedamagePark-Angdamageindexinelasticenergydissipation
分類號： P31[天文地球—固體地球物理學]
- Shallow velocity structure of the Luoyang basin derived from dense array observations of urban ambient noise
- Multiple seismological evidences of basin effects revealed by Array of Binchuan(ABC), northwest Yunnan, China
- Pattern recognition of seismogenic nodes using Kohonen self- organizing map： example in west and south west of Alborz region in Iran
- Seismic hazard assessment of Western Coastal Province of Saudi Arabia： deterministic approach
- Estimating the site effects in Luoyang basin using horizontal-to-vertical spectral ratio method from a short-period dense array
- Seismic detections of the 15 February 2013 Chelyabinsk meteor from the dense ChinArray
- Using large dynamite shots to image the structure of the Moho from deep seismic reflection experiment between the Sichuan basin and Qinling orogen
- A practical approach for seismic risk assessment of underground structures:A case study of Iranian subway tunnels
- Cumulative damage effects of mainshock-aftershock sequences on RC-frame structures
- Preface to the special issue on electromagnetic phenomena related to seismic and volcanic activities from EMSEV in 2016