软土初始动剪切模量及函数计算分析

doi:10.12068/j.issn.1005-3026.2015.08.028

东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (8): 1193-1198.DOI: 10.12068/j.issn.1005-3026.2015.08.028

软土初始动剪切模量及函数计算分析

骆俊晖，缪林昌，石文博

(东南大学交通学院，江苏南京210096)

收稿日期:2014-12-20 修回日期:2014-12-20 出版日期:2015-08-15 发布日期:2015-08-28
通讯作者: 骆俊晖
作者简介:骆俊晖(1985-)，男，福建三明人，东南大学博士研究生；缪林昌(1961-)，男，江苏靖江人，东南大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(51278099)；江苏省普通高校研究生科研创新计划项目(CXLX13_098).

Calculation and Analysis of Original Dynamic Shear Modulus and Function of Soft Clay

LUO Jun-hui， MIAO Lin-chang， SHI Wen-bo

School of Transportation， Southeast University， Nanjing 210096， China.

Received:2014-12-20 Revised:2014-12-20 Online:2015-08-15 Published:2015-08-28
Contact: LUO Jun-hui
About author:-
Supported by:
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摘要/Abstract

摘要： 为了深入研究软土在移动地铁荷载作用下产生的软化现象，对南京软土进行室内GDS动三轴试验.采用初始动剪切模量计算公式对南京软土进行计算和比较分析，建立考虑频率影响因素的经验计算公式.同时提出考虑振动次数的动剪切模量函数计算公式，对南京软土进行计算和分析，并用不同地区的土验证公式适用性.结果表明:考虑频率影响因素的初始动剪切模量计算公式能更准确地计算初始动剪切模量，提出的考虑振动次数的动剪切模量函数计算公式对不同地区土的适用性较好.

关键词: 软土, 动荷载, 动力参数, 动剪切模量, GDS

Abstract: To research soft clay softening induced by moving metros load， an indoor GDS dynamic triaxial test on Nanjing soft clay was carried out. The computational formula with the original dynamic shear modulus was used to calculate and analyze the Nanjing soft clay. And an empirical formula considering the frequency factor was established. Meanwhile， a function considering the vibration number for the dynamic shear modulus was presented to calculate and analyze the Nanjing soft clay and the applicability was verified by testing on clay from different regions. It is shown that the original dynamic shear modulus formula considering the frequency factor can be accurately determined and the dynamic shear modulus function considering the vibration number has a good applicability to the clay from different regions.

Key words: soft clay, dynamic load, dynamic parameter, dynamic shear modulus, GDS

中图分类号:

TU470

骆俊晖，缪林昌，石文博. 软土初始动剪切模量及函数计算分析[J]. 东北大学学报:自然科学版, 2015, 36(8): 1193-1198.

LUO Jun-hui， MIAO Lin-chang， SHI Wen-bo. Calculation and Analysis of Original Dynamic Shear Modulus and Function of Soft Clay[J]. Journal of Northeastern University Natural Science, 2015, 36(8): 1193-1198.

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软土初始动剪切模量及函数计算分析

Calculation and Analysis of Original Dynamic Shear Modulus and Function of Soft Clay

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