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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 period, the severe climate change and the frequent sea-level rise and fall of Hangzhou City combined with the influence of Neotectonic movement have made the sedimentary soil of Hangzhou have various types and thicknesses. At the same time, the ancient Gui River, the ancient Qiantang River several times diversion, erosion cutting, but also makes the formation phase change more complex. In order to study the dynamic characteristics of the Quaternary Sedimentary Soil in Hangzhou, the dynamic triaxial tests of the soil samples in this area are carried out to obtain the dynamic stress-strain curve and dynamic strength curve of the soil in the project site. The surrounding villages and towns earthquake mitigation planning has important conclusions, which will also have a significant impact on the construction of Hangzhou expressway and high-speed railway.