摘要
目前,大型振动台模型试验是研究液化场地的地基动力特性及土-结动力相互作用的一种有效手段。以1976年唐山地震中倒塌的胜利桥的地基为原型,开展1∶10模型的自由场地基液化的大型振动台模型试验研究,再现了自然地震触发地基砂土液化的各种主要宏观震害现象,尤其是模型地基的试验破坏与其原型的实际震害情况比较吻合。主要介绍有关此次大型振动台模型试验的相似设计、操作技术及试验结果等方面的若干关键科学问题。
The ground of Victory Bridge collapsed in Tangshan earthquake 1976 was taken as a prototype to develop a large-scale shaking table 1∶10 model test for free-ground liquefaction arisen from earthquake ,in which the main macroscopic phenomena of natural ground liquefaction arisen from earthquake could recur, and it could be seen that the status of scale model ground in the test nearly agrees with the actual phenomena of it′s prototype arisen from earthquake.Some key scientific problems of operation technique, scale design and test achievement are introduced.
出处
《地震工程与工程振动》
CSCD
北大核心
2003年第6期138-143,共6页
Earthquake Engineering and Engineering Dynamics
基金
国家自然科学基金资助项目(50378031
50178027)
关键词
自由场地基液化
大型振动台模型试验
地震
自然地震
free-ground liquefaction
large-scale shaking table proportional model test
earthquake.
