Dynamic shear modulus and damping ratio characteristics of clayey 
and silt soils in Xuzhou urban area

CHEN Guo-xing; HAN Yong; LIANG Ke

doi:10.16285/j.rsm.2022.0124

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Dynamic shear modulus and damping ratio characteristics of clayey and silt soils in Xuzhou urban area

更新时间：2026-06-25

- Dynamic shear modulus and damping ratio characteristics of clayey and silt soils in Xuzhou urban area
- Vol. 44, Issue S1, Pages: 163-172(2023)
- 作者机构：
  
  1. 南京工业大学岩土工程研究所,江苏,南京,210009
  2. 江苏省土木工程防震技术研究中心,江苏,南京,210009
  3. 北京工业大学城市与工程安全减灾教育部重点实验室,北京,100124
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2022.0124
  CLC： TU442
- Online First：16 November 2023，
  
  Published：2023
- 稿件说明：
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CHEN Guo-xing, HAN Yong, LIANG Ke. Dynamic shear modulus and damping ratio characteristics of clayey and silt soils in Xuzhou urban area[J]. 2023, 44(S1): 163-172.
DOI：

CHEN Guo-xing, HAN Yong, LIANG Ke. Dynamic shear modulus and damping ratio characteristics of clayey and silt soils in Xuzhou urban area[J]. 2023, 44(S1): 163-172. DOI： 10.16285/j.rsm.2022.0124.

摘要

利用自振柱试验仪，研究了徐州城区41个钻孔、165个黏性土和粉土原状土样的动剪切模量比G/G0和阻尼比λ 随剪应变幅值γa的变化特征，探讨了有效围压、塑性指数和地质年代对徐州城区Q3和Q4黏土、Q4粉质黏土与Q4粉土G/G0-γa 和λ-γa 关系的影响。结果表明：有效围压越大，塑性指数越大，相近深度土样的地质年代越新，土体的非线性越弱；给出了3类土的G/G0-γa和λ-γa关系的上、下包络线，定量地分析了土类、有效围压、塑性指数和地质年代等因素对各类土G/G0-γa 和λ-γa 经验关系的影响规律，并建立了预测G/G0-γa 和λ-γa 的经验公式。该成果有利于对徐州城区土动力特性的认知，并对该地区工程场地地震效应的评价具有借鉴和参考价值。

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