摘要
粉煤灰作为结构填方地基需要进行液化可能性的分析。为使适用于粉砂土液化分析的Seed简化应力法能有效地引用于粉煤灰填方地基的液化可能性判断,进行了粉煤灰和粉砂土的室内动力特性对比试验研究,并建议通过设定粉煤灰液化应力比调整系数Ca或者粉煤灰抗液化强度校正系数Cra来满足采用Seed方法所需要的参数。
Analysis of its liquefaction probability is necessary when fly ash is used for the filling of the structural foundation. To use the simplified stress method of Seed, which is adaptable to the analysis of silty soil liquefaction, for correct judgment of liquefaction probability of foundation filled with fly ash, lab tests are conducted for comparison of the dynamic properties of fly ash and silty soil, with the suggestion that the parameters required in the Seed method be satisfied by assuming Ca for the factor of liquefaction stress ratio adjustment or Cra for the factor of anti-liquefaction intensity correction of fly ash.
出处
《中国市政工程》
2006年第1期84-86,共3页
China Municipal Engineering
关键词
粉煤灰
粉砂土
液化分析
粉煤灰液化应力比调整系数Ca
粉煤灰抗液化强度校正系数Cra
fly ash
silty soil
liquefaction analysis
Ca ,factor for adjustment of fly ash liquefaction stress ratio
Cra ,factor for correction of fly ash anti-liquefaction intensity
