固结比对砂土动剪切模量及地表反应谱的影响

›› 2007, Vol. 28 ›› Issue (3): 443-448.

固结比对砂土动剪切模量及地表反应谱的影响

孙静^{1, 2}，袁晓铭³

1.黑龙江大学建筑工程学院，哈尔滨 150000；2.哈尔滨工业大学土木工程学院，哈尔滨 150090；3.中国地震局工程力学研究所，哈尔滨 150080

收稿日期:2005-04-21 出版日期:2007-03-10 发布日期:2013-08-28
作者简介:孙静，女，1973年生，讲师，主要从事岩土工程和土动力学研究。
基金资助:
地震科学联合基金项目（No. 102033）和黑龙江省教育厅科学技术研究项目（No. 11511296）资助。

Effects of consolidation ratios of sands on dynamic shear modulus and response spectrum of soil surface

SUN Jing^{1, 2}, YUAN Xiao-ming³

1. Institute of Architectural Engineering, Heilongjiang University, Harbin 150000, China；2. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; 3. Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China

Received:2005-04-21 Online:2007-03-10 Published:2013-08-28

摘要/Abstract

摘要： 采用共振柱试验方法，研究了固结比对砂土最大动剪切模量以及对动剪切模量比与剪应变非线性关系的影响。通过土层地震反应计算，初步给出了这种影响对地表反应谱作用的估计。对福建标准砂和哈尔滨砂进行了系统试验，提出了计算不同固结比砂土最大动剪切模量的建议公式，公式显示固结比kc>1、最大动剪切模量较kc=1时的增长程度明显比Hardin公式要大。同时，给出了固结比对动剪切模量比与剪应变非线性关系及其对地表反应谱的影响。结果表明，固结比对砂土动剪切模量比与剪应变非线性关系有一定影响。随着固结比增加，模量比非线性关系曲线有一定提高，在强地震动作用下的土层反应分析中应考虑实际固结比的影响。

关键词: 固结比, 动剪切模量, 反应谱, 共振柱试验, 土层反应分析

Abstract: The effects of the consolidation ratios on the maximum dynamic shear modulus and the dynamic shear modulus versus the shear strain of sands are presented by using the resonant column method. The effects of the dynamic shear modulus versus the shear strain under different consolidation ratios on spectrum of surface ground motion are evaluated by the soil layer response calculation. The Fujian’s standard sand and Harbin’s sand of China are employed in the tests. The recommended formula considering the effects of the consolidation ratios on the maximum dynamic shear modulus of sands is given. The new formula indicates that the increasing degree of the maximum dynamic shear modulus due to kc>1 is significantly larger than that described by Hardin and Black’s formula. The effects of the consolidation ratios on dynamic shear modulus versus the shear strain and surface ground motion are demonstrated. The results indicate that the dynamic shear modulus versus the shear strain increases with increasing of the consolidation ratios; and the effects of the consolidation ratios on dynamic shear modulus versus the shear strain should be considered for the incidence of the strong shock.

Key words: consolidation ratio, dynamic shear modulus, response spectrum, resonant column tests, soil layer response

中图分类号:

TU 441

孙静，袁晓铭. 固结比对砂土动剪切模量及地表反应谱的影响[J]. , 2007, 28(3): 443-448.

SUN Jing, YUAN Xiao-ming. Effects of consolidation ratios of sands on dynamic shear modulus and response spectrum of soil surface[J]. , 2007, 28(3): 443-448.

参考文献

相关文章 15

[1]	张炜，李亚，周松望，蒋正波，吴非，梁文洲，. 南海北部区域黏土循环动力特性试验研究[J]. , 2018, 39(7): 2413-2423.
[2]	孔纲强，李辉，王忠涛，文磊,. 透明砂土与天然砂土动力特性对比[J]. , 2018, 39(6): 1935-1940.
[3]	陈树峰，孔令伟，黎澄生, . 低幅应变条件下粉质黏土泊松比的非线性特征[J]. , 2018, 39(2): 580-588.
[4]	杨光昌，白冰. 考虑超固结效应的不同温度路径下饱和粉质黏土的热固结[J]. , 2018, 39(1): 71-77.
[5]	纠永志，黄茂松, . 超固结软黏土的静止土压力系数与不排水抗剪强度[J]. , 2017, 38(4): 951-957.
[6]	杨爱武，孔令伟，郭飞,. 天津滨海软黏土动力累积塑性变形特性与增长模型[J]. , 2017, 38(4): 979-984.
[7]	丁祖德，黄娟，袁铁映，彭立敏，王志良,. 昆明泥炭质土动剪切模量与阻尼比的试验研究[J]. , 2017, 38(12): 3627-3634.
[8]	胡秀青，董全杨，吕程伟，王军，庄心善,. 水泥土搅拌桩软土地基土体动力特性的共振柱试验研究[J]. , 2016, 37(S2): 343-348.
[9]	李林，李镜培，岳著文，唐剑华, . 饱和黏土中钻孔灌注桩孔壁稳定性力学机制研究[J]. , 2016, 37(9): 2496-2504.
[10]	尹松，张先伟，孔令伟，Hossain Md Sayem　, 　. 海洋沉积土动剪切模量与阻尼比的试验研究[J]. , 2015, 36(S1): 459-464.
[11]	胡靖，顾晓强，黄茂松 , . 基于离散元法的静止土压力系数分析[J]. , 2015, 36(S1): 624-628.
[12]	张希栋，骆亚生. 双向动荷载下黄土的动剪切模量特性研究[J]. , 2015, 36(9): 2591-2598.
[13]	张建经，范刚，王志佳，张明，彭盛恩,. 小角度成层倾斜场地动力响应分析的大型振动台试验研究[J]. , 2015, 36(3): 617-624.
[14]	孙志亮，孔令伟，郭爱国，田海. 应力比与含水状态对松散堆积体动力参数及地表反应谱的影响[J]. , 2015, 36(10): 2765-2772.
[15]	张志国，杨阳，牟春来，肖明 , . 水电站地下厂房结构抗震计算方法探讨[J]. , 2014, 35(S1): 319-327.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed