摘要
通过实地调查和收集"5.12"汶川8.0级地震后四川岷江、绵阳、安县等高烈度区(7°以上)大、中、小典型土(石)坝坝体变形、坝基地质条件、大坝几何参数等资料,对建筑物的震损裂缝分别进行相关分析,认为坝体裂缝成因除了与地震波直接有关外,其震损程度还与坝轴线的方向和区域应力方向关系密切;而裂缝的分布部位则与坝基覆盖层的分布范围、厚度、性状,坝体的材料、几何尺寸、风浪和动物活动掏蚀等有关,为我国西南水利水电工程建设、深覆盖层的利用、防渗材料的选择和抗震设计研究积累了难得的经验。
Based on on-site investigated and collected data about dam deformation,dam foundation geological condition,dam geometric parameters etc.of earth(rock) dams in different sizes in high seismic intensity(above 7°) areas of Minjiang,Mianyang,Anxian etc.after 8.0 scale of "5·12" Wenchaun earthquake,the correlative analysis on earthquake-damaged crack of structures was conducted,and it is concluded that besides direct relation with earthquake wave,the crack cause and damaged degree of the dam have close relation ...
出处
《人民长江》
北大核心
2008年第22期63-65,95+105,共5页
Yangtze River
关键词
高烈度区土(石)坝
震损特征
成因
覆盖层利用
抗震设计
high-intensity earthquake area
earth（rock） dam
earthquake-damaged character
cause
covering layer utilization
earthquake-resistance design
