摘要
室内土动力试验是研究土动力特性的重要方法之一,其结果受到很多试验参数的影响,其中加载频率、应变速率(加载速率)、加载类型和循环次数是4个重要的试验参数,也是目前国内外的研究热点。总结了国内外关于这4个试验参数对土动力特性影响的研究成果,经过比较分析后认为对于应变速率(加载速率)、加载类型以及循环次数对土动力特性的影响,研究者的认识基本一致,但对有关加载频率对土动力特性的影响却尚持不同的观点。
Laboratory dynamic test is one of the most important methods to study the soil dynamic characteristics, and its results are influenced by many test parameters, especially, frequency, strain rate （loading rate）, type of loading and number of cycles are the four most important test parameters in laboratory dynamic test and these four test parameters are the hotspot in the study of soil dynamic characteristics presently. A review and comparative analysis about the research results of the effects of the four test parameters on the dynamic characteristics of soil domesticly and overseas are presented, up to now, people＇s viewpoint about the effects of strain rate（loading rate）, type of loding and number of cycles on soil dynamic characteristics are the same, but there is not a common sense about the effect of loading frequency. At last, the problems to which more attention should be paid in further study are pointed out.
出处
《防灾减灾工程学报》
CSCD
2005年第4期446-450,共5页
Journal of Disaster Prevention and Mitigation Engineering
基金
国家自然科学基金资助项目(50479020)
关键词
频率
应变速率
加载类型
循环次数
frequency
strain rate
type of loading
number of cycles
