摘要
第四纪以来,杭州市气候变化剧烈,海水面升降频繁,加上新构造运动的影响,使得杭州市沉积土成因类型繁多,厚度变化大。同时古苕溪、古钱塘江多次改道,冲刷切割,也使得地层相变多而复杂。为了研究杭州市第四系沉积土的动力特性,通过对该区域土样进行动三轴试验,从而得到工程场地土的动应力-应变骨干曲线以及动强度值变化曲线,并得到对杭州市及周边村镇的抗震减灾规划具有重要意义的结论,这也将会对杭州市高速公路与高速铁路的建设产生显著的影响。
Since the Quaternary, due to drastic climate change, the frequent movement of sea level and the impact of neotectonic movement, the sedimentary soils in Hangzhou are of different types and variation thickness. At the same time, the reaches of the ancient rivers Shaoxi and Qiantang repeatedly change and scour, which make the transitions of the complicated formation phases. In order to investigate the dynamic properties of Quaternary sediments in Hangzhou region, dynamic triaxial tests have been done for soil samples from this region, and the dynamic stress-strain curves and the dynamic strength curves are obtained. These achievements would have important significance to the layout for reducing earthquake damage in Hangzhou urban area and the suburbs. In addition, those results would also have useful effect on highways or high-speed railways constructions.
出处
《工程勘察》
CSCD
北大核心
2009年第12期31-35,48,共6页
Geotechnical Investigation & Surveying
基金
浙江省科技厅资助项目(2006C13062)
关键词
杭州沉积土
动三轴试验
动应力-应变关系
动强度
sedimentary soil in Hangzhou
dynamic triaxial test
dynamic stress-straln relations
dynamic strength
