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目前一般公认地震是震源处断裂错动而发生的。震源处断裂错动产生地震波,传到地表引起地面运动,促使结构物振动。由于地基失效可引起结构物破坏,结构震动周期与地面运动周期相同而共振,更加强结构物的破坏;由于结构物的反应谱(所谓反应谱就是以单质点体系在实际地震过程中的反应为基础,结构物对地面运动的反应波谱)值较高,受力过强而破坏。由此看出,一些地震参数可以反映区域稳定程度的差异,故在区域稳定中研究它们是完全有必要的。
At present, the generally accepted earthquake is caused by a fault in the source. Seismic waves are generated at the fault displacement at the source and are transmitted to the surface to cause ground motion, which causes the structure to vibrate. Because the foundation failure can cause structural damage, the structural vibration cycle is the same as the ground motion cycle and resonates to strengthen the structural damage; due to the response spectrum of the structure (the so-called response spectrum is the response of the single-mass system during the actual earthquake. The response spectrum of the foundation and structure to the ground motion is higher and the stress is stronger and destroyed. From this we can see that some seismic parameters can reflect the difference in regional stability, so it is absolutely necessary to study them in regional stability.