摘要
唐山地震是研究公路交通系统地震灾害的一个极好震例。调查收集了唐山地震时１９４座桥梁和河北省境内公路路面的破坏资料，调查资料区分了桥梁的结构类型和规模类型、结构破坏和功能破坏，通过统计分析给出了不同结构破坏和功能破坏的桥梁数按地震烈度的分布，并进一步计算了桥梁的结构破坏概率和功能破坏概率，给出了相应的拟合结果。把桥梁与路面的破坏概率相对比表明，桥梁的结构破坏概率明显高于路面的结构破坏概率，路面在Ⅷ度及Ⅷ度以下地区的结构破坏概率是极低的，本文比较系统地给出了唐山地震时桥梁和路面的结构及功能破坏结果，对研究公路交通系统的地震易损性具有积极意义。
In this paper, we investigated 194 bridges in Tangshan and Tianjin areas and highway grounds within Hebei Province beaten by the great Tangshan earthquake in 1976. All bridges are classified both according to their structure type and scale type. The amount of bridges of different damage states is investigated. The structure damage probabilities and function damage probabilities of different kinds of bridges are calculated. For the highway ground, we provided the total length and the damaged length of different damage states in the areas of MMI Ⅶ -Ⅵ and the structure damage probabilities. The results show that the structure damage probabilities of bridges are obviously higher than that of the highway grounds in the same MMI. When MMI is smaller than or equals to Ⅷ, the structure damage probabilites of highway grounds are very low (lowr than 2. 5 percent).
出处
《华南地震》
1995年第4期35-42,共8页
South China Journal of Seismology
基金
地震科学联合基金
关键词
唐山地震
震害统计
公路
交通系统
Tanshan Earthquake
Earthquake disaster assesment
Earthquake disaster statistic
Earthquake vulnerability
Highway System
