风化砂、淤积砂的动力特性

Study on Dynamic Characteristics of Weathered Sands and Deposited Silt

阐述了三峡工程围堰填料风化砂及堰基淤积砂的动力特性研究成果，主要包括土料动强度、动模量、阻尼比、动孔压、剪切波速等特性。这些特性的诸多参数，是堰体动力稳定设计、液化评判的重要依据。

This paper introduces the research results of dynamic characteristics of weathered sands filled in the cofferdam and silt in its foundation, including their dynamic strengthes, dynamic modules of elasticity, damping ratioes, dynamic pore water pressures, shear wave velocities etc.. These parameters of materials characteristics are important data for the aseismic design and evaluating soil liquefaction of the cofferdam.