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该文收集了汶川、芦山、鲁甸地震极震区的强震地面运动记录,并简要介绍了鲁甸地震的震害情况。以6组二维钢筋混凝土框架结构和1组三维钢筋混凝土框架为例,对比了这些地面运动对不同结构的破坏作用。分析结果表明,汶川地震极震区的地面运动破坏力最强,鲁甸地震次之,而芦山地震极震区的地面运动破坏力则明显较小。基于上述对比,对我国的地震应急响应依据、宏观烈度评定、地震动强度指标及工程抗震研究提出一些讨论和建议。
This paper collects the ground motion records of the strong earthquakes in the extreme earthquakes of Wenchuan, Lushan and Ludian earthquakes and briefly introduces the seismic damage of the Ludian Earthquake. Take six groups of two-dimensional reinforced concrete frame structure and one set of three-dimensional reinforced concrete frame as an example, the damage effect of these ground movements on different structures is compared. The analysis results show that the ground motion in Wenchuan earthquake is the strongest destructive ground, followed by Ludian earthquake, while the destructive force of ground motion in the extreme earthquake area of Lushan earthquake is obviously smaller. Based on the above comparisons, some discussions and suggestions are made on the basis of earthquake emergency response, the assessment of macroscopic intensity, the index of seismic dynamic strength and the research on earthquake resistance of buildings.