摘要
根据中外地震史上的纪录,在强震条件下,基岩上建筑物所受到的破坏往往要比建於土层上的同类建筑物轻。本文引述了多个历史上大地震的例子,说明基岩上建筑物的抗震优越性,分析并比较了基岩及土层的烈度。所举例子包括1906年美国旧金山大地震,1925年加拿大圣劳伦斯大地震,1944年加拿大康沃尔大地震,1952年美国加州克恩郡大地震,1971年美国加州圣费尔南多大地震,1976年唐山大地震等。
Throughout the long history of seismic occurrence it has been apparent that structures built on or within rock have.for the most part.withstood the effects of seismic shaking better than comparable structures on soils.This paper examines the many case histories,showing the differ- ential between the seismic response of structures on soil and rock.which constitute solid evidence of the superiority of phenomena with low inherent energy.Because of these features,and as the case histories show.a strong and competent structure built on rock would most likely be capable of withstanding relatively large seismic events with little or no damage.
出处
《自然灾害学报》
CSCD
1996年第1期59-66,共8页
Journal of Natural Disasters
关键词
地震
灾害
地震烈度
场地地质
Earthquake damage
Intensity
Effect of site conditions
