土工基础

›› 2016, Vol. 30 ›› Issue (4): 520-523.

• 工程实录 • 上一篇    下一篇

唐山曹妃甸滨海软土的动模量和阻尼比测试

郝 斌1，赵玉成1，刘珍岩2，李占岭2，谢 阳1，张晓星1   

  1. （1.石家庄铁道大学 土木工程学院，石家庄 050043；2.河北省电力勘测设计研究院，石家庄 050031）
  • 收稿日期:2015-12-22 出版日期:2016-08-20 发布日期:2016-08-26
  • 作者简介:郝 斌（1990-），男，硕士研究生，研究方向为土动力学。

Dynamic Shear Modulus and Damping Ratio of Soft Soils of Tangshan Caofeidian Coastal Area

HAO Bin1, ZHAO Yucheng1, LIU Zhenyan2, LI Zhanling2, XIE Yang1, ZHANG Xiaoxing1   

  1. (1.College of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043;
    2.Hebei Electric Power Design & Research Institute, Shijiazhuang, 050031)
  • Received:2015-12-22 Online:2016-08-20 Published:2016-08-26

摘要： 针对唐山曹妃甸地区滨海软土地区正在进行的海上风电工程，通过GDS动三轴试验模拟波浪循环荷载，对滨海软土的动模量和阻尼比进行了试验研究，探讨了动应力幅值和围压对它们的影响。研究表明：滨海软土的动模量和阻尼比随动应力幅值、围压的增大而增大；并得出了滨海软土的最大动剪切模量，可供分析唐山曹妃甸地区滨海软土一般动力特性，为其他进一步研究提供理论参考。

关键词: 滨海软土, 动三轴试验, 动模量, 阻尼比, 波浪循环荷载

Abstract: The soil cohesive soil samples were collected from a near shore wind mill farm project in the coastal area of Caofeidian, Tangshan City. The dynamic soil modulus and damping ratios were tested through GDS dynamic triaxial test by simulating the cyclic wave actions. The effect of dynamic stress magnitude and confining pressures on the dynamic modulus and damping ratios were studied. The results indicate that the dynamic shear modulus and damping ratios increase with the cyclic stress magnitude and confining pressures. The initial dynamic shear modulus of the costal soft soils in Caofeidian area are also obtained.

Key words: Costal Soft Soils, Dynamic Triaxial Shear Tests, Dynamic Shear Modulus, Damping Ratio, Cyclic Wave Loadings